• 专利附录
  • 专利说明
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    • 专利摘要:
    The invention relates to the on-site preparation and use of a bleaching agent and / or disinfectant. To this end, the invention provides a device comprising a chemical reactor, a feed device connected to the reactor for supplying reactants necessary for forming the bleaching agent and / or disinfectant, and a discharge device connected to the reactor, the discharge device being adapted to coupling to an object treatment device, in particular textile or food product, for supplying at least a part of the bleaching agent and / or disinfectant formed to the treatment device, and wherein the device comprises a detection element coupled to the discharge device for detecting of the amount of bleach and / or disinfectant to be fed to the treatment device and / or supplied. The invention further provides a method and a system for on-site preparation and use of a bleaching agent and / or disinfectant as well as the use of a detection element in a device according to the present invention.
    公开号:BE1024009B1
    申请号:E2013/0666
    申请日:2013-10-04
    公开日:2017-10-27
    发明作者:Alain Joseph Andre Bostoen；Cécile Monique Paule Viry；Meulemeester Francky Julo De
    申请人:Christeyns N.V.；
    IPC主号:
    专利说明:

    Device for preparing and applying a bleaching agent and / or disinfectant on site
    The invention relates to the on-site preparation and use of a bleaching agent and / or disinfectant. In particular, the invention relates to a device for on-site preparation and application of a bleaching agent and / or disinfectant. The invention further relates to a method for on-site preparation and use of a bleaching agent and / or disinfectant, in particular with the device according to the present invention, a system comprising a device according to the present invention and a treatment device for objects connected to the device, in the particular textile or food product, and the use of a detection element, in particular in a device according to the present invention.
    Bleaching agents and disinfectants, in particular bleaching agents and disinfectants based on peroxyacid (“peracid”), are used in various fields including dairy, food and beverage processing as well as the laundry industry (including household laundry). Peracid-based disinfectants are also used in the treatment of cooling water, process water and household waste water.
    Peracid-based disinfectants and / or cleaning agents are in practice produced in bulk, and usually supplied and stored in ventilated vessels until the peracid is used. Peracid is usually offered as a solution with a relatively low concentration of peracid ranging between 5% and 35%. Certain solutions include a concentration of peracid that varies around 1% or less. Such a peracid solution, such as the commonly used peracetic acid ("PAA"), is usually obtained from an equilibrium reaction by mixing hydrogen peroxide, acetic acid, water and, optionally, an acid catalyst in water. Such a solution has the disadvantage that the equilibrium of such a reaction is relatively unfavorable, which in practice means that the peracid-based disinfectants are supplied including an excess of hydrogen peroxide and acetic acid in water.
    Alternative methods to provide peracid-based disinfectants and / or cleaning agents are also available. Thus, conventional non-equilibrium solutions of peracid, such as PAA, are produced commercially in bulk by distillation of acidic equilibrium solutions from PAA and storing the resulting imbalance distillate at a temperature of around freezing, in order to minimize PAA degradation during storage. limit. However, this method for generating non-equilibrium solutions for PAA is not practical for smaller users due to the accuracy required during the preparation process, the use of concentrated hazardous substances and the explosion hazard that occurs during the distillation of concentrated peroxides, which such factors significantly increase the cost of such a distillation procedure.
    A further alternative method is to prepare peracid, such as PAA, by an irreversible reaction (non-equilibrium) in which an acyl donor, such as triacetin in the case of PAA production, is used in combination with a peroxide, for example hydrogen peroxide, and a base , for example, sodium hydroxide or potassium hydroxide.
    For the above-mentioned methods for the preparation of peracid, such as PAA, the major disadvantage is that the peracid concentration decreases over time as a result of decomposition to acetic acid. In addition, the cleaning and disinfection of installations used in, for example, the food industry and the treatment of objects such as dairy, food and drink and textiles, is a non-continuous process in which a peracid solution produced in bulk will only be partially applied. Therefore, the use of bleaching agents and / or disinfectants for treatment of objects in which peracid-based disinfectants are produced, supplied and stored in bulk until the peracid is used is particularly inefficient.
    The object of the present invention is therefore to provide an improved, more efficient method for the preparation and use of bleaching agents and / or disinfectants, which method further ensures the quality of the bleaching agent and / or disinfectant produced and used.
    To this end, the invention provides a device for the on-site preparation and use of a bleaching agent and / or disinfectant comprising: at least one chemical reactor for forming a bleaching agent and / or disinfectant; at least one feed device connected to the reactor for supplying reactants necessary to form the bleach and / or disinfectant to the reactor; and at least one discharge device connected to the reactor for discharging the bleaching agent and / or disinfectant formed in the reactor, the discharge device being adapted for coupling to an object treatment device, in particular textile or food product, for supplying at least a part of the bleaching agent and / or disinfectant formed on the treatment device, and wherein the device comprises at least one detection element coupled to the discharge device for detecting the amount of bleach and / or disinfectant supplied and / or supplied to the treatment device .
    The above device can be coupled to a treatment device for objects, such as textiles, dairy, food and drink, and thus offers the user of the treatment device the possibility of preparing bleach and / or disinfectant comprising disinfectants and / or cleaning agents at the moment that the use of bleaches and / or disinfectants is desired. This results in a more efficient coordination between the demand and the supply of bleach and / or disinfectant. As already described above, the concentration of peracid in peracid-based disinfectants decreases over time. By providing a device which can be coupled to a treatment device, the time between the preparation of the bleaching agent and / or disinfectant and the final application thereof can be reduced to a minimum, which reduces the quality and, consequently, the treatment process of the prepared product. disinfectant.
    The final concentration of the bleaching agent and / or disinfectant formed is further dependent on the reactants used, the duration of the reaction to prepare the bleaching agent and / or disinfectant formed and the reaction conditions in general, such as the metal ions present in the solvent used (e.g. water), the temperature during the reaction and the amounts of reactants used during the formation of bleach and / or disinfectant.
    To ensure the quality of the bleaching agent and / or disinfectant formed, the device of the present invention provides a detection element which detects the amount of bleach and / or disinfectant supplied to the treatment device. Namely, it has been observed that a solution comprising a bleaching agent and / or disinfectant also comprises a significant residual fraction which has no disinfecting effect. Therefore, detecting the amounts of reactants added to the reactor is not a normative method for determining the formation of bleach and / or disinfectant and therefore the quality of the disinfectant. It has been found that detecting the amount of bleach and / or disinfectant to be supplied to the treatment device provides an improved standard for determining and guaranteeing the quality of the disinfectant prepared. Such a method also provides the possibility of determining the consumption costs of the user of the treatment device on the basis of the actually produced amount of bleach and / or disinfectant supplied to the treatment device. Therefore, the consumption costs will correlate with the final quality of the disinfectant. It is also possible on the basis of the amounts of bleach and / or disinfectant detected by the detection element to optimize the process for preparing the disinfectant on site, taking into account the environmental conditions as they apply on site.
    In an embodiment according to the present invention, the at least one chemical reactor comprises a reaction vessel, such as a mixing vessel, in which two or more reactants are mixed to form a bleaching agent and / or disinfectant or an intermediate product thereof. Various reaction vessels can be coupled together to provide the ability to form various intermediates before producing the final product. In another embodiment according to the present invention, the at least one chemical reactor comprises an in-line reactor. Such a reactor is particularly advantageous for forming a bleaching agent and / or disinfectant by means of a continuous process. Such a reactor can be arranged for supplying reactants at different places.
    In particular the device according to the present invention is suitable for preparing a disinfectant based on peracid, in particular peroxycarboxylic acids with a carbon chain length ranging from 1 to 8. Preferably, the device according to the present invention is suitable for preparing peracid wherein the reactants preferably comprise an acyl donor, a peroxide and a base. The acyl donor is preferably formed by a compound of the formula (1):
    wherein: LG is a leaving group formed by an amide, amine, ester, anhydride or halide; and R is formed by a hydrogen atom (H) or alkyl. The reaction (2) of this compound with hydrogen peroxide and / or peroxide ions is shown as follows:
    It has been found that acyl donors with a chemical structure corresponding to the aforementioned formula are particularly suitable for the production of a peracid.
    The type of peracid that is formed depends on the chemical structure of the acyl donor and in particular on the nature of R (hydrogen or alkyl group).
    A peroxide is preferably selected from the group consisting of hydrogen peroxide or peroxide ions. A base is preferably selected from the group consisting of an alkali metal hydroxide, such as caustic soda or potassium hydroxide, or other bases, such as alkanolamines (e.g. monoethanolamine), N'N-diisopropylethylamine, 2,6-di-tert-butylpiridine, and 1,8 -Diazabicycloundec-7-een.
    The device according to the present invention is preferably suitable for the preparation of peracetic acid. In such a reaction, the acyl donor can preferably be selected from the group consisting of acetyldon compounds such as triacetin, diacetin, ethylene glycol diacetate, acetyl salicilate, ethylene glycol monoacetate and / or pentaerythritol tetraacetate. The device may further be adapted to prepare peracids wherein the acyl donor is preferably selected from the group consisting of oxybenzoic acid esters, such as DOBA, benzene sulphonate esters, such as NOBS and LOBS, sorbitan estquioctanoate, sorbitan octanoate, sorbitan hexanoate, sorbitan sesquiandecanoate, sorbitanate sorbitanate sorbitanate sorbitan squidecanoate, monosaccharide esters, such as glucose esters, and / or glycerol esters, such as trioctanoin, and polysaccharide esters, such as sucrose esters.
    The stability of the bleaching agent and / or disinfectant to be manufactured in the device can be further improved by the addition of complexing agents adapted to complex metal ions which will be present in the solution. Research has shown that the complexing agents work relatively selectively with heavy metal ions. A certain complexing agent can be extremely suitable for complexing a certain type of metal ion, such as an iron ion, and not or hardly suitable for complexing another type of metal ion, such as a copper ion. In order to insulate as much heavy metal ions as possible, in order to guarantee stability in the resulting aqueous solution as much as possible, it is often advantageous if several complexing agents are added to the at least one chemical reactor of the device according to the present invention. Preferably, at least two complexing agents are selected that are suitable for complexing different heavy metal ions. In this way as many heavy metal ions as possible, naturally present in traces (<5%, usually <1%) present in alkali metal hydroxide and / or the solvent used (for example water), can be complexed.
    The complexing agents are preferably formed by at least one complexing agent, usually in an acidic or saline state, selected from the group consisting of: HEDP (Hydroxyethylidene diphosphonic acid), PBTC (Phosphonobutane tricarboxylic acid), DTPMP (Diethylenetriaminopentanemethylene phosphonic acid), Na-Heptogluconate, Na-Heptogluconate, or Na-Heptogluconate, MGDA (methylglycine-diacetic acid), EDDS (Ethylenediamine disuccinic acid), ATMP (aminotrimethylene phosphonic acid), IDS (Tetrasodium Iminodisuccinate), GLDA (N, N-bis (carboxymethyl) glutamic acid), EDTA (Ethylenediaminotetraacetic acid Ethylene sulfonetropheno-etho-pheno-etho-pheno-etho-pheno-etho-pheno-etheno-etho-pheno-etho-pheno-etho-pheno-etho-etho-pheny-etho-etho-pheny-etho-pheny-etho-pheny-etho-pheny-etho-pheny-iso-pheny-etho-ethio-ethi-etho-ethio-: -phiedi-amphi-tio-etho-ethio-n-ethio-: -phi-n-x-o-n-α-α-α: α-β β , DPA (Dipiccolonic acid), citrates, STPP (sodium tripolyphosphate), silicates, polymerized phosphonates, Stannates, magnesium sulfate, CMI (carboxymethylinulin) and derivatives thereof, sodium polyaspartate, polysuccinimide, and / or polyacrylic acids or associated copolymers. is obtained by the c HEDP, DTPMP, polymerized phosphonate, ATMP, and IDS. Addition of these preferred complexing agents to the at least one chemical reactor according to the present invention hardly leads to degradation of the formed peracid after 15 minutes after the initial reaction. The 15 minute period is representative of the use of the formed peracid, such as peracetic acid, as a component in a treatment device, such as a cleaning plant, for, for example, foodstuffs, textiles, (medical) instruments, etc. When using one of the aforementioned preferred complexing agents, the stability of formed peracid will be nearly 96-98%, which means that 96-98% of the actually formed peracid concentration (100%) is maintained.
    In an embodiment of the present invention, the device further comprises a processing unit coupled to the detection element for processing information collected by the detection element. Such a processing unit provides the device, and also the user of the device, with the possibility of analyzing the information with regard to the amount of bleach and / or disinfectant supplied to the treatment device, on the basis of which the quality of the formed bleach and / or disinfectant can be determined. With regard to guaranteeing the quality of the disinfectant, it is possible to choose to provide the processing unit with predetermined values. The device may be provided with warning means which emit a warning signal when the detected bleaching agent and / or disinfectant formed falls outside the predetermined values. In addition, it is possible to provide the device with a closure which can close the coupling between the device and the treatment direction if a disinfectant has been prepared that does not meet the minimum quality conditions.
    In a further embodiment according to the present invention, the processing unit is adapted for calculating consumption costs on the basis of the information collected by the detection element. The information collected by the detection element preferably comprises information relating to the determination of the number of batches (batches) of bleaching agent and / or disinfectant produced by measuring the amount of disinfectant and / or cleaning agent formed (in mass or volume, for example), and / or information regarding the concentration of bleach and / or disinfectant, and therefore the quality, of the manufactured batch by determining the percentage of bleach and / or disinfectant present.As already mentioned, it has been found that the calculation of the consumption costs on the basis of the reactants supplied, there is no normative method given that the quality of the disinfectant can vary per use and per location By detecting the information described above using a detection element, which detection element is linked to the at least one discharge device can have a constant quality t of the disinfectant and / or cleaning agent to be manufactured are guaranteed. The device of the present invention therefore also provides a method in which the user of the treatment device is only invoiced on the basis of the quantities of bleach and / or disinfectant produced instead of on the basis of the raw materials supplied.
    In an additional embodiment, the processing unit is adapted for transferring information with an external network. The transfer, i.e. sending and / or receiving, of information is particularly advantageous in order to monitor the performance of the device remotely and adjust it where necessary. An external network preferably comprises an external server which is connected to the processing unit of the device by means of a wireless connection. Such a transfer of information with an external network also provides the possibility to determine the remaining quantities of reactants on the basis of the quantities of bleach and / or disinfectant produced. In an embodiment of the present invention, the device is provided with a control panel where the user of the device has the option of entering the quantities of reactants supplied. The remaining quantities can be calculated based on this data. However, it is also possible to provide the device with measuring means that monitor the amount of remaining reactant.
    The detection element preferably detects the amount, such as the number of batches and / or fraction of bleach and / or disinfectant, to be fed to the treatment device and / or supplied bleach and / or disinfectant using a counter and / or on basis of supply time and / or supply volume. In addition, the detection element can be coupled to the at least one feed device for supplying reactants to the reactor for detecting the amount of reactant to be fed and / or supplied. The detection element can also be adapted to send electronic signals for the remaining amount of reactant. In addition, the detection element can be further coupled to the reactor for detecting, for example, the amount of bleach and / or disinfectant formed.
    In an embodiment variant of the present invention, the detection element is adapted to transfer information with an external network. As already mentioned above, the transmission, i.e. sending and / or receiving, of information is particularly advantageous for monitoring the performance of the device remotely and adjusting it where necessary.
    The detection element can also be adapted to dose the amount of bleach and / or disinfectant supplied to the treatment device.
    In an embodiment of the present invention, the device further comprises a feed device connected to the reactor for supplying a solvent to the reactor. The solvent preferably comprises water, but depending on the bleaching agent to be produced and / or disinfectant, another solvent can also be chosen.
    In a further embodiment variant, the processing unit is also adapted to control the detection element. This makes it possible, on the basis of the analysis of the information collected by the detection element, carried out by the processing unit to provide the detection element with instructions in such a way that the detection element has the possibility of discharging what is formed in the reactor bleach and / or disinfectant whether or not to feed the treatment device. In addition, the processing unit can control the amount of bleach and / or disinfectant supplied to the treatment device in such a way.
    The processing unit and / or the detection element can also be adapted to receive an activation signal issued by the treatment device. Such an activation signal can be given in case the supply of bleach and / or disinfectant to the treatment device is desired. This activation signal can also comprise a specific amount of bleach and / or disinfectant to be supplied. The processing unit or the detection element can then check the production of bleach and / or disinfectant on the basis of this signal and only produce the required amount of disinfectant.
    In an embodiment variant, the device according to the present invention further comprises a dosing device placed between the discharge device and treatment device. Such a dosing device controls the release of bleach and / or disinfectant to a treatment device coupled to the device. It is also possible to provide the device according to the present invention with a storage vessel and / or flow-through vessel placed between the discharge device and treatment device in order to temporarily store an excessively rapid production or overproduction of bleach and / or disinfectant. Both the dosing device and / or the storage vessel can be provided with supply means for supplying stabilizers, such as the complexing agents described above, for increasing the stability of the disinfectant and / or cleaning agent contained in the dosing device and / or the storage vessel.
    The discharge device of the present invention can also be provided with a first discharge element coupled to the treatment device for supplying at least a part of the bleaching agent and / or disinfectant formed to the treatment device and a second discharge element for discharging at least a part of the bleaching agent and / or disinfectant formed. Such a construction of the discharge device provides for the possibility of directly discharging disinfectant of too low a quality formed in the reactor, without such a low quality disinfectant being added to the treatment device. The second discharge element is preferably coupled to a waste vessel.
    In an embodiment variant of the device according to the present invention, the detection element is placed at a position located between the reactor on the one hand and the first and second supply element on the other hand. Such a construction provides the possibility of measuring the quality of the bleaching agent and / or disinfectant formed in the reactor with the aid of the detection element before determining to supply the bleaching agent and / or disinfectant formed to the treatment device.
    The device according to the present invention is preferably connectable to a treatment device, wherein the treatment device is suitable for cleaning and disinfecting installations used in, for example, the food industry and / or the treatment of textile, food product, medical equipment and / or crockery. The device according to the present invention is therefore suitable for use in the textile industry, such as the laundry industry, as well as medical treatment centers and professional kitchens.
    The invention further provides a method for on-site preparation and use of a bleaching agent and / or disinfectant, in particular with the device according to the present invention, comprising the processing steps of: a) administering to a reactor the reactants necessary for forming a bleaching agent and / or disinfectant; b) reacting the reactants to form the bleach and / or disinfectant; c) discharging the bleach and / or disinfectant formed from the reactor, wherein at least a part of the bleach and / or disinfectant formed is led to an object treatment device, in particular textile or food product; and d) detecting the amount of bleach and / or disinfectant to be fed to the treatment device and / or supplied.
    In an embodiment variant, the method also comprises step e), comprising on the basis of the amount detected during step d) being supplied to the treatment device and / or supplied calculating consumption costs to be charged.
    In a further embodiment of the present invention, the method further comprises keeping in stock the formed bleach and / or disinfectant discharged in step c) before leading at least a part of the bleach and / or disinfectant formed to the treatment device.
    The process of the present invention may also include administering a solvent to the reactor. The method can also be activated after receipt of an activation signal issued by the treatment device.
    The invention further provides a system comprising at least one device according to the present invention and at least one treatment device for objects, in particular textile or food product, connected to the at least one device, wherein the discharge device of the device is coupled to the treatment device, such that bleaching agent and / or disinfectant formed via the discharge device can be supplied to the treatment device.
    The system of the present invention may further comprise a processing unit coupled to the detection element for receiving, analyzing and / or transmitting information collected by the detection element. As already indicated above, such a processing unit can provide for monitoring and guaranteeing the quality of the bleaching agent and / or disinfectant formed. In addition, the processing unit can be adapted to calculate consumption costs on the basis of the information collected by the detection element.
    In an embodiment according to the present invention, the system comprises a server coupled to the device for receiving, analyzing and / or transmitting data generated by the device, in particular the detection element and / or the processing unit. As already indicated above, such a system provides for the possibility of remotely monitoring and controlling the device which forms part of the system. The device can also be adapted to receive signals generated by the server, such as warning signals in the event of a shortage of reactants or signals with regard to improving the quality of the bleaching agent and / or disinfectant to be produced.
    The system of the present invention preferably comprises a treatment device which is located in a laundry, kitchen, food processing industry or medical treatment center.
    The invention further provides the use of a detection element, in particular in a device according to the present invention, for detecting the amount of bleach and / or disinfectant supplied to a treatment device and / or supplied. In particular, the invention provides for the use of a detection element in which the amount of bleach and / or supply of bleach and / or disinfectant detected by the detection element is used for calculating consumption costs.
    The invention will be elucidated on the basis of non-limitative exemplary embodiments shown in the following figures. Herein: figure 1 shows a schematic view of a device according to the invention, and figure 2 shows a schematic view of a system according to the invention comprising the device according to figure 1.
    Figure 1 shows a schematic view of a device 1 according to the invention. In this exemplary embodiment, the device 1 is adapted to prepare a bleaching agent and / or disinfectant that can be applied to a washing process of a treatment device 2, for example an industrial tunnel washer 100 or industrial drum washing machine 101 for textile. The device 1 comprises a plurality of storage containers 3a, 3b, 3c, 3d, 3e, 3f. The first storage container 3a is at least partially filled with an acyl donor, preferably triacetin. The second storage container 3b is preferably filled with water, such as, for example, demineralized water or drinking water with a preferred temperature of at most 30 ° C. The third storage container 3c is at least partially filled with hydrogen peroxide, and the fourth storage container 3d is at least partially filled with a strong base, preferably sodium hydroxide. Supply containers 3e and 3f provide the option of pre-mixing various reactants to form an intermediate product. A typical volume of the storage containers 3a, 3c, 3d is between 0.1 and 2 kg. The storage containers 3a-3f are interconnected via a plurality of valves (not shown) (releasable) by means of feed devices 4a-4f with a chemical reactor 5. By opening the valves, the various raw materials can be fed into the reactor 5 for preparation of the disinfectant and / or cleaning agent. The valves are thereby preferably controlled by a processing unit 6, usually formed by a PLC (Programmable Logic Controller). The feed of the raw materials to the reactor 5 is preferably done in a dosed manner and also in a predefined order, wherein the base is usually supplied to the reactor 5 as the last raw material. The valves can also function as predosing elements for predosing a desired amount of raw material to be supplied to the reactor. Separate predosing elements can optionally be used. The predosing elements can be provided with a float for measuring the desired amount of raw material. The pre-dosing elements can be emptied in a time-controlled manner (for example 10-15 seconds) and / or for example by weighing the raw material present in the pre-dosing elements. The reactor 5 in this exemplary embodiment has a typical size of between 5 and 20 liters. The reactor 5 is provided with a mixing device (not shown), as well as with one or more probes (not shown) coupled to the processing unit 6 for monitoring, inter alia, the temperature, pH, redox potential, etc. of the exothermic reaction mixture in the reactor 5.
    The processing unit 6 is preferably adapted to receive signals 200a, 200b, 200c, 200d, preferably electrical signals, which signals 200a, 200b, 200c come from the different components 3a-3f, 5, 8 of the device 1 or signals 200d from the processing device 2. Processing unit 6 can also be adapted to send signals 200a, 200b, 200c to the various components 3a-3f, 5, 8 of the device 1. Such signals 200a, 200b, 200c are output can be used by processing unit 6 to control the device 1.
    Preferably, water is added first to the reactor 5. If there is no water in the reaction vessel, the software of the PLC 6 may be programmed to stop the preparation process. The water is added at the end of the previous cycle / preparation, without cleaning the reaction vessel 5. The remaining raw materials are only added when a new preparation starts.
    The water is preferably dosed by using a flow meter (not shown) or by volume by using a dosing unit (not shown) with a switching level or time valve based with an accuracy of more than 99%. This can also be considered as a predosing element (not shown).
    The overall accuracy of all dosed products is more than 99% to guarantee the quality of the disinfectant and / or cleaning agent produced on site. It is possible to monitor the consumption of disinfectant and / or cleaning agent on location for each laundry that is connected to the device 1.
    The device 1 can be programmed such that when the water level is correct and verified by a measurement, reactants are added to the reactor 5, and the mixture will be stirred. The base is preferably added as the last reactant, whereby the pH value of the mixture will be increased, but care must be taken that a pH value of a maximum of 11.5 is not exceeded. During the mixing of the various reactants to form a peracid-based bleaching agent and / or cleaning agent, an exothermic reaction occurs, whereby the pH value of the mixture also falls below 11. Because the energy released by the reaction itself is a reaction product, it is enough to measure the temperature increase of each batch size to verify the quality of the reaction. If the temperature difference during preparation does not match the specifications provided, the system will stop the preparation and discharge the mixture to the waste container. If the temperature increase is too much and exceeds 40 ° C, the preparation is also stopped and the mixture is discharged to the waste container.
    The temperature difference is defined as the difference between the temperature of the solution after the reaction minus the temperature before reaction. When the temperature difference is validated, mixing is performed for two minutes and the peracid generated on site in the reactor 5 goes directly to a reactor coupled to the reactor via line 10, flow vessel 8, where the generated peracid can be stored for up to 2 hours for use in the treatment device 2. The through-flow vessel 8 enables a more accurate dosing to the treatment device 2, and makes it possible to connect a plurality of washing units to the treatment device 2. The through-flow vessel 8 is thus connected to the treatment device 2 via a line 9, prepared peracid can be used directly for use in the washing process that takes place in the adjacent or nearby treatment device 2.
    The final temperature of the product is ideally below 28 ° C. Below this temperature, both the yield of the reaction and the stability of the final product are optimal. This is why, in some cases, if the temperature of the incoming water is too high (more than 18 ° C), for example during the summer, it might be considered to cool the water to, for example, 15 ° C. This cooling does not necessarily have to be checked by the system and can take place at a different location.
    Depending on when the product will be used (immediately after preparation or 1-2 hours after preparation), the ratio between peracetic acid and H2O2 varies between 6.0-3.0.
    The device 1 also comprises one or more detection elements 11, one of which is now coupled to line 10. The detection elements 11 can also be positioned elsewhere downstream of the reactor 5. The detection element 11 is adapted to detect the amount of bleach and / or disinfectant generated, in particular the amount of bleach and / or disinfectant supplied to the treatment device 2. In this way, the actual consumption of the bleaching agent and / or disinfectant can be monitored and registered with the help of the PLC 6. This can be done with relatively high accuracy (more than 99%). One or more detection elements can also be used for rejected preparations of bleach and / or disinfectant which are led via a discharge (not shown) from the reactor 5 towards a waste vessel (not shown). The rejected batches can thus also be registered.
    Figure 2 shows a schematic view of a system for billing a manager 14 of a treatment device 2 by a manager 15 of the device 1. Figure 2 shows a system in which a part or all of the information detected by the PLC 6 via a wireless network 16 can be sent to a server 13 of the manager 15 of the device 1, usually formed by the supplier of the bulk materials. The manager 15 of the device 1 will then be able to calculate the current consumption costs as well as the costs with regard to rejected batches by means of the server 13 and on the basis of this information the costs 17 can be charged to a manager 14 of the treatment device 2 who will invoice for this. 18 will receive. Typically, the manager 14 will only pay for the validated batches. This therefore concerns an output-based charging of costs, whereby only the realized consumption will be paid. The system as shown in Figure 2 further comprises the possibility for the manager 15 of the device 1 to provide the PLC 6 of device 1 by means of a wireless connection 16 with various information, such as software updates, method improvements, et cetera.
    The system as shown in Figure 2 comprising the device 1 therefore provides the possibility for the manager 15 of the device 1 to monitor the consumption of raw materials of each individual customer, such as the manager 14 of the treatment device 2. As a result, the manager 15 of the device 1 has the option of proactively supplying the end user with raw materials if the remaining quantity of raw materials falls below a predetermined level.
    The invention further relates to a method for manufacturing a bleaching agent and / or disinfectant-containing disinfectant and / or cleaning agent, preferably with the aid of the device described above. To this end, the invention provides a method for preparing a bleaching agent and / or disinfectant, comprising preparing an aqueous mixture of at least one peroxyacid and hydrogen peroxide and / or peroxide ions, the aqueous mixture being prepared by reacting in water of (i) at least one acyl donor with (ii) hydrogen peroxide and / or peroxide ions, with added to the water: (iii) at least one base, and optionally (iv) at least one complexing agent.
    The reaction that occurs after the intermixing of the acyl donor and the hydrogen peroxide and / or the peroxide ions involves a nucleophilic acyl substitution reaction that can be carried out particularly quickly and efficiently in a basic environment, preferably with an initial pH between 10 and 11 5. This basic medium is created by adding the at least one strong base, preferably an alkali metal hydroxide, such as caustic soda (NaOH) or potassium hydroxide (KOH), which acts as a strong base. Instead of alkali metal hydroxide, other types of bases can also be used, such as alkanolamines, N'N-diisopropylethylamine, 2,6-di-tert-butylpiridine, and 1,8-Diazabicycloundec-7-ene.
    The aqueous mixture can be formed by mixing the raw materials water, acyl donor and hydrogen peroxide and / or peroxide ions, these raw materials being added in any order. However, the base is preferably added last.
    However, our own research has shown that the impurities (impurities) present in commercially available alkali metal hydroxides often contain heavy metal ions, such as iron ions, nickel ions, manganese ions, and copper ions, and / or transition metal ions, such as zinc ions or cadmium ions, which have an adverse effect on stability of the formed peracid (peroxyacid). Therefore, one or more complexing agents are added to the aqueous solution or dispersion to complex the metal ions of heavy metals and / or transition metals by chelation, whereby the relatively high, non-equilibrium concentration of peracid can be relatively well maintained. However, such metal ions can also have a different origin and, for example, are already present (in traces) in the water used, whereby use of the one or more complexing agents for such metal ions is advantageous. In the following, heavy metal ions is understood to mean ions originating from heavy metals and / or transition metals.
    The various suitable acyl donors and complexing agents have already been described in detail above. In particular, the method of the present invention provides for the production of a peracid, in particular peroxycarboxylic acids, with a carbon chain length ranging from 1 to 8. More particularly, the method of the present invention provides for the production of peracetic acid (PAA) .
    In a preferred embodiment, the at least one acyl donor is selected from a group of acyl donors consisting of: acetyl precursors or alkyl precursors. Both precursors adapted to form peracids are preferably acetyl esters, for example diacetin, triacetin, diacetin, ethylene glycol diacetate, ethylene glycol monoacetate, pentaerythritol tetraacetate, and acetyl salicilate. Triacetin will generally be the most preferred. Triacetin is relatively inexpensive, easily available, and designed to generate three molecules of PAA with one molecule, which, as already noted, works particularly effectively as a bleaching agent and disinfectant.
    Other suitable acyl precursors are preferably selected from the group consisting of: oxybenzoic acid esters, such as DOBA, benzene sulfonate esters, such as NOBS and LOBS, sorbitan esters, such as sorbitan sesquioctanoate, sorbitan octanoate, sorbitan hexanoate, sorbitan sesquihexanoate, sorbitan sesquanoate esters, sorbitan estanoate esters, esters of sorbitan estanoate, esters of sorbitan estanoate, and sorbitan estanoate esters. and / or glycerol esters such as trioctanoin and polysaccharide esters such as sucrose esters.
    The acidity of the resulting aqueous mixture plays an important role in the stability of the formed peracid, in particular PAA. On the one hand, a high pH is particularly advantageous to effect a rapid perhydrolysis of the acyl donor, in particular triacetin. An (initial) pH greater than 10.5 is preferably used, and more preferably a pH greater than 11, and more preferably less than 11.5. This concerns the acidity at the time of commencement of the chemical reaction in which the peracid is formed. During and after the chemical reaction, the pH will generally decrease somewhat (a pH below 11) due to the formation of peracetic acid. The use of the alkali hydroxide helps to keep the pH at the desired level. However, a relatively high pH usually has a negative influence on the stability of the PAA formed, in particular the PA acetate-derived peracetate ion, and even accelerates the decomposition of the PAA formed (alkaline hydrolysis), whereby the peracetate with water are converted to acetic acid or at least acetate, and hydrogen peroxide. At lower pH values, close to the pKz of PAA, the PAA will decompose spontaneously. The optimum acidity range is between both limits, with PAA (or a different peracid) reacting as a result of alkaline hydrolysis or spontaneous decomposition. It has been found that if during the formation of peracid, in particular PAA, the aqueous mixture does not exceed a pH of 11.5, a particularly advantageous concentration of peracid, in particular PAA, can be obtained.
    As already indicated above, under the influence of the formation of peracid, such as PAA, the pH will drop over time to a pH value which is lower than 11. This relatively low pH value has the advantage that certain active components, such as enzymes and / or hydrophobic (lipophilic) peracids, such as phthalimidoperoxyhexanoic acid (PAP), can be used particularly effectively. PAP usually functions optimally, just like enzymes, at a pH of between 7.0 and 9.5. When applying the resulting composition according to the invention, in which lipophilic bleach and / or enzymes are / are added, it is advantageous if the pH is lowered until it is within the aforementioned pH range of 7.0 to 9.5, preferably of 8 5 to 9.5, in order to allow the additives to function as well as possible.
    The concentration of hydrogen peroxide and / or peroxide ions is preferably between 1% w / w and 10% w / w. The concentration of hydrogen peroxide and / or peroxide ions is preferably between 1% w / w and 5% w / w. Different types of hydrogen peroxide can be used, which types vary from 19% w / w to 49.4% w / w hydrogen peroxide. Dosages can then be adjusted to achieve a desired concentration by weight.
    The acyl donor concentration is preferably between 1% w / w and 10% w / w. The acyl donor concentration is preferably from 1% w / w to 5% w / w.
    The molar ratio of the hydrogen peroxide (or peroxide ions derived therefrom) and the (reactive groups of the) acyl donor is preferably between 1: 2 and 4: 1 (peroxide: acyl donor). The molar ratio of the peroxide and the acyl donor is preferably> 0.5: 1. More preferably, the molar ratio of the peroxide and the acyl donor is> 1: 1. Most preferably, a molar ratio of the peroxide and the acyl donor which is substantially equal to 1.3: 1. A molar ratio of> 1.3: 1 will generally not lead to a further increase in the reaction efficiency. The acyl donor can have more than one reactive group that can react with the peroxide (according to a nucleophilic acyl substitution reaction). If the acyl donor has several reactive groups, then the above molar ratios must be adjusted accordingly. For example, triacetin has three reactive groups that can react with peroxide ions, which means that the ideal molar ratio will be around or around 3.9: 1 (peroxide: triacetin).
    The concentration of base is preferably 0.3% w / w to 5% w / w. In a particularly advantageous embodiment of the method according to the present invention, the base is added to the aqueous mixture as the last component. It has been found that such an order of addition results in a particularly advantageous yield of the formed peracid, in particular PAA. It has also been found that by applying a sequence in which the base is added last to the aqueous mixture, the formed peracid, such as PAA, can be stored and stored in a stable state. In particular, the above-mentioned method provides a method for manufacturing a bleaching agent and / or disinfectant which formed bleaching agents and / or disinfectant can be stored for 1 to 2 hours before being used without the concentration of the bleaching agents formed and / or stored during storage or disinfectant reduced.
    Example
    The dosing vessels 3a-3f are connected to packages comprising chemicals, including water, triacetin, hydrogen peroxide and caustic soda, which dosing vessels 3a-3f are connected to these chemical packages via a feed pump. The manager of the treatment facility has the option of adjusting the quantity of the product to be prepared according to the consumption and capacity of the cleaning installation. This amount can be a fixed amount, but it is also possible to adjust this amount, for example when one or more cleaning installations must be used at the same time. Unlike the other ingredients, the water can be added directly to the reaction vessel. The quantities of chemicals to be supplied can be measured using a calibrated electronic flow meter or a switching level indicator. The device 1 is preferably connected to a flow-through vessel 8. If the level of the product in the flow-through vessel is lower than a defined threshold value, a new batch is prepared.
    A peracetic acid-based disinfectant and / or cleaning agent is prepared by supplying water to the reaction vessel 5. For optimum mixing of the water and the other components to be added, the water and the mixture to be formed are stirred by means of a mixer. Triacetin is then added to one of the dosing vessels 3a-3f. The weight and / or volume of triacetin is determined in the dosing vessel. Hydrogen peroxide is added in the same or a separate dosing vessel. Soda liquor is then added to a separate dosing vessel. The different quantities of components are registered by the PLC 6. If all predosages are correct, triacetin and hydrogen peroxide are added to the reactor. After stirring (for example for 30 seconds), caustic soda is added to the aqueous reaction mixture, the pH value of the aqueous mixture being a maximum of 11. During the perhydrolysis of triacetin and the formation of peracetic acid (PAA), a temperature increase and at the same time a pH reduction is observed. The mixture is stirred for 2 minutes and, if the temperature difference is validated with a predefined maximum temperature difference, the batch is considered as specified and transferred to the flow-through vessel 8. If the temperature difference is not within the preferred range of 8-10 ° C , an alarm message is issued and the product is rejected and disposed of. Device 1 is adapted to receive an electronic signal from the treatment device 2 if PAA is to be supplied to the treatment device 2. Upon receipt of such a signal, device 1 will supply the requested amount of PAA from flow-through vessel 8 to the relevant treatment device 2. Furthermore, device 1 is adapted to receive an electronic signal which is supplied from flow-through vessel 8 if the amount of PAA is below a certain value. Upon receipt of such a signal, device 1 will commence the production of PAA according to the method described above. The amount of PAA administered to the washing process is measured by means of the detection element 11 and is charged on to the manager 14 of the treatment device 2 at a later time.
    It will be clear that the invention is not limited to the exemplary embodiments shown and described here, but that within the scope of the appended claims, countless variants are possible which will be obvious to those skilled in the art.
    权利要求:
    Claims (32)
    [1]
    Conclusions
    An on-site preparation and application of a bleaching agent and / or disinfectant comprising: at least one chemical reactor for forming a bleaching agent and / or disinfectant; at least one feed device connected to the reactor for supplying reactants necessary to form the bleach and / or disinfectant to the reactor; and at least one discharge device connected to the reactor for discharging the bleaching agent and / or disinfectant formed in the reactor, the discharge device being adapted for coupling to an object treatment device, in particular textile or food product, for supplying at least a part of the bleaching agent and / or disinfectant formed on the treatment device, and wherein the device comprises at least one detection element coupled to the discharge device for detecting the amount of bleach and / or disinfectant supplied and / or supplied to the treatment device .
    [2]
    Device as claimed in claim 1, wherein the device further comprises a processing unit coupled to the detection element for processing information collected by the detection element.
    [3]
    Device as claimed in claim 2, wherein the processing unit is adapted for calculating consumption costs on the basis of the information collected by the detection element.
    [4]
    Device as claimed in claim 2 or 3, wherein the processing unit is adapted for transferring information with an external network.
    [5]
    5. Device as claimed in any of the foregoing claims, wherein the detection element detects the amount of bleach and / or disinfectant to be supplied to the treatment device and / or disinfectant supplied using a counter and / or on the basis of supply time and / or supply volume.
    [6]
    Device as claimed in any of the foregoing claims, wherein the detection element is adapted for transfer of information with an external network.
    [7]
    7. Device as claimed in any of the foregoing claims, wherein the detection element is adapted to receive an activation signal issued by the treatment device.
    [8]
    Device as claimed in any of the foregoing claims, wherein the detection element is adapted to dose the amount of bleach and / or disinfectant to be supplied to the treatment device and / or supplied.
    [9]
    Device according to any one of the preceding claims, wherein the device further comprises a feed device connected to the reactor for supplying a solvent to the reactor.
    [10]
    Device as claimed in any of the claims 2-10, wherein the processing unit is adapted to control the detection element.
    [11]
    Device as claimed in any of the claims 2-10, wherein the processing unit is adapted to receive an activation signal issued by the treatment device.
    [12]
    Device as claimed in any of the foregoing claims, wherein the device further comprises a dosing device placed between the discharge device and treatment device.
    [13]
    Device as claimed in any of the foregoing claims, wherein the device further comprises a storage vessel and / or flow-through vessel placed between the discharge device and treatment device.
    [14]
    Device as claimed in any of the foregoing claims, wherein the discharge device is provided with a first discharge element coupled to the treatment device for supplying at least a part of the bleaching agent and / or disinfectant formed to the treatment device and a second discharge element for discharging at least at least a portion of the bleaching agent and / or disinfectant formed.
    [15]
    Device as claimed in claim 14, wherein the detection element is placed at a position between the reactor on the one hand and the first and second discharge element on the other hand.
    [16]
    Device as claimed in any of the foregoing claims, wherein the object treatment device is suitable for cleaning and disinfecting installations used in, for example, the food industry and / or the treatment of textile, food product, medical equipment and / or crockery.
    [17]
    A method for preparing and applying a bleaching agent and / or disinfectant on site, in particular with the device according to any one of the preceding claims, comprising the processing steps of: a) administering to a reactor the reactants required to form a bleach and / or disinfectant; b) reacting the reactants to form the bleach and / or disinfectant; c) discharging the bleach and / or disinfectant formed from the reactor, wherein at least a part of the bleach and / or disinfectant formed is led to an object treatment device, in particular textile or food product; and d) detecting the amount of bleach and / or disinfectant to be fed to the treatment device and / or supplied.
    [18]
    A method according to claim 17, wherein the method also comprises step e), comprising on the basis of the amount detected during step d) being supplied to the treatment device and / or supplied calculating consumption costs to be charged.
    [19]
    A method according to claim 17 or 18, wherein the method further comprises keeping in stock the formed bleach and / or disinfectant discharged in step c) before passing at least a portion of the bleach and / or disinfectant formed to the treatment device.
    [20]
    The method of any one of claims 17-19, wherein step a) also comprises administering a solvent to the reactor.
    [21]
    A method according to any of claims 17-20, wherein the method is activated after receipt of an activation signal issued by the treatment direction.
    [22]
    A system comprising: at least one device according to any one of claims 1 to 15; and at least one treatment device for objects, in particular textile or food product, connected to the at least one device, the discharge device of the device being coupled to the treatment device such that bleaching agent and / or disinfectant formed via the discharge device can be supplied to the treatment device.
    [23]
    The system of claim 22, wherein the system further comprises a processing unit coupled to the detection element for receiving, analyzing and / or transmitting information collected by the detection element.
    [24]
    The system of claim 23, wherein the processing unit is adapted to calculate consumption costs based on the information collected by the detection element.
    [25]
    25. System as claimed in any of the claims 22-24, wherein the system comprises a server coupled to the device for receiving, analyzing and / or transmitting data generated by the device, in particular the detection element and / or the processing unit dates.
    [26]
    The system of claim 25, wherein the device is adapted to receive signals generated by the server.
    [27]
    The system of any one of claims 22-26, wherein the treatment device is located in a laundry, kitchen, food processing industry or medical treatment center.
    [28]
    Use of a detection element, in particular in a device according to any one of claims 1-15, for detecting the amount of bleach and / or disinfectant supplied to a treatment device and / or supplied.
    [29]
    Use according to claim 28, wherein the amount of bleach and / or disinfectant supplied to the treatment device detected by the detection element is used for calculation of consumption costs.
    [30]
    A method for preparing a bleaching agent and / or disinfectant, in particular in an apparatus according to any one of claims 1-15, comprising preparing an aqueous mixture of at least one peroxyacid and hydrogen peroxide and / or peroxide ions, wherein the aqueous mixture is prepared by reacting in water (i) at least one acyl donor with (ii) hydrogen peroxide and / or peroxide ions, with added to the water: (iii) at least one base, and optionally (iv) ) at least one complexing agent.
    [31]
    The method of claim 30, wherein the at least one base is added last to the aqueous mixture.
    [32]
    The method of claim 30 or 31, wherein the pH during the reaction is between 10 and 11.5.
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    同族专利:
    公开号 | 公开日
    ES2581750T3|2016-09-07|
    BE1024009B9|2017-11-30|
    EP2857491A1|2015-04-08|
    EP2857491B1|2016-06-08|
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    法律状态:
    2018-02-05| FG| Patent granted|Effective date: 20171027 |
    优先权:
    申请号 | 申请日 | 专利标题
    BE20130666A|BE1024009B9|2013-10-04|2013-10-04|DEVICE FOR PREPARING AND USING BLEACH AND / OR DISINFECTION AGENT ON THE SPOT|BE20130666A| BE1024009B9|2013-10-04|2013-10-04|DEVICE FOR PREPARING AND USING BLEACH AND / OR DISINFECTION AGENT ON THE SPOT|
    ES14187618.5T| ES2581750T3|2013-10-04|2014-10-03|Device for on-site preparation and application of bleach and / or disinfectant, corresponding procedure and use of a flowmeter|
    EP14187618.5A| EP2857491B1|2013-10-04|2014-10-03|Device for on-site preparation and application of a bleach and/or disinfectant, corresponding method and use of a flowmeter|
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