• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method and a system for drying goods by means of one of two switchable moist water adsorbent bodies. The invention is characterized in that ambient air (U1) is periodically first successively in each case by a first, previously regenerated, Wasserwasseradsorbenskörper (1), by a first heater (E1), by a drying chamber (10) with the material to be dried ( 11), the same is then passed through a second heating direction (E2) and the process air (PI) strongly heated there through a second moisture water adsorbent body (2), which is thus regenerated and the air laden with moisture is discharged there to the outside, until, between the absolute humidity data of the air converted from the relative humidity measurement data supplied by the measuring sensors of the first adsorbent body (1) and / or the second adsorbent body (2), essentially no difference can be detected before and after at least one of the adsorbent bodies, after which a switchover of the Airway direction is made.
    公开号:AT510486A1
    申请号:T15382010
    申请日:2010-09-15
    公开日:2012-04-15
    发明作者:
    申请人:Reiterbauer Alois；Freh Alfred；
    IPC主号:
    专利说明:

    The invention relates generally to a new process and plant for a gentle and substantially energy-efficient drying of moist and therefore to be dried goods, e.g. of wood.
    The invention relates to a new process for drying of goods, in particular piece and Rieselgut of inorganic or mineral or biological materials, fuels, wood and food with the environment deprived of air, which moisture water by means of one of two, each switchable from the same flowed through moisture adsorbent adsorbent body or layers is removed, and then the moisture to be dried material withdrawn moisture is removed and wherein in each case after saturation of at least one of the two adsorbent body or layers with moisture, the same by
    Supply of heat from the moisture water adsorbed by him freed, so it is regenerated.
    The method is characterized in that the drying process is performed so that the ambient air while sucking the same cyclically or periodically - first in each case continuously successively - by a - arranged on the input side and the first measuring sensors for air temperature and By a first heater, in which the air dehumidified in the first adsorbent body is heated, by a first heating means - "first", previously regenerated moisture-water adsorbent body, in which the ambient air is at least largely removed from its inherent moisture Drying chamber in which the dehumidified and heated air is loaded with the - arranged there, to be dried material to be dehumidified and withdrawn-moisture water, the same thereafter - by a second on-heater, in which laden with moisture water from the material to be dried process air to higher temperature au is heated, and - this moist laden heated process air by a - also input and output side with the " second " Measuring sensors for air temperature and relative humidity - equipped second humid water Abdsorbenskörper is performed - in which with simultaneous regeneration of the same heated humid air with the in this second adsorbent body in the previous cycle, optionally to saturation, absorbed fountain solution further charged and is finally discharged to the outside, and - this direction of the air guide is respected each time until between the two of the from the input and output side first and second .. .. .. ·· ·· ····. * .......... ·; : ¾ · .. · * ,. · * .. * ·: - * · *
    Measuring sensors of the first adsorbent body and / or the second adsorbent delivered, from the temperature and the respective associated relative humidity measurement data, preferably by means of a central computing and control unit, converted absolute humidity data of the air before and after at least one, preferably each, the Both adsorbent bodies only a small or substantially no difference is detected, - then made a switchover of the airway direction and the air is then guided or sucked in each opposite direction through the drying process.
    From AT 412999 B1 a working with two absorbent bodies drying process and a system for performing this method is known, within which or the regeneration of the two absorbent bodies, ie the respective alternate exemption of the same from the amount of moisture absorbed by them takes place in that the absorber bodies are alternately heated with the introduction of heat or heat by means of high frequency.
    The present invention deviates from this, as was shown, relatively expensive and therefore economically unfavorable way of preparing drying air, and is based in completely different ways on the surprising finding that loaded with moisture water from a drying absorbent body quite directly with the out with moisture the laden air to be dried material can be regenerated when it is heated only to a sufficiently high temperature.
    Furthermore, it has been found that the process is economically even further favored despite the use of not cheap electric power, since in particular the system costs are much lower than in all previously known drying systems and beyond, the operation is much easier.
    The combination of several factors, in particular heat, variable vacuum in the drying room, extremely dry air, air circulation, ie regenerated hot air circulation and cross ventilation, and PLC controlled drying process, ensures that drying time and energy consumption can be kept to a minimum ,
    The heating means provided in the invention are preferably easily controllable electric heaters, such as in particular electric pipe heater and optionally plate heat exchanger, and generate the necessary for the drying of the material to be dried in the drying room heat of the heated drying air, preferably at a temperature in the range of to 100 ° C.
    The heat exchanger at the beginning of the process causes, on the one hand, the moisture of the coming from the process exhaust air or process is eliminated by condensation, and on the other hand hiebei the heat still in the exhaust air from their heating is recovered by with the same from the freshly drawn in air at the beginning of the process is preheated.
    By at least one exhaust duct of the drying chamber with the material to be dried and the enriched with moisture from the mentioned Good air can be sucked, then dehumidified in the absorbent body and again passed as extremely dry air in the drying room, which is not the rule and exceptionally.
    A program preferably controlled by means of a central computing and control unit and in each case the direction of the air flow changing transverse ventilation allows a uniform drying process in the material to be dried.
    The advantages of the new drying process are in particular the following:
    Since no really high temperatures are necessary during the entire drying process or process, high vapor pressure is avoided and in this way unwanted deformations of the material to be dried, e.g. prevents the wood and the natural color of the material to be dried, for example, the natural wood color is retained.
    By drying with the heated dry air and by the variable depression in the drying chamber, as a result of sucking the drying air through the process, e.g. in wood, the water contained there drawn from the capillaries and transported away with the air flow, while, for example, natural wood preservatives, such as resins and minerals, remain in the capillaries of the wood, whereby after drying in the inventive manner a renewed moisture absorption by the or is made much more difficult in the same, and the wood in this way gains in strength, density and durability, which is particularly essential in the furniture and wood construction industry.
    After adjusting the type of wood to be dried, the wood thickness and the desired final moisture content, e.g. on the touch screen of an operating panel of the computing and control unit, the fully automated sequence of the inventively run drying process allows the achievement of the highest quality of the material to be dried and thus an increase in the gain to be achieved.
    A finely tuned air circulation system in the drying chamber causes a uniform circulation of the warm dry air, whereby a uniform drying of the material, in particular wood throughout the drying chamber is guaranteed.
    In summary, the following should be noted:
    The energy consumption of the process according to the invention is low, the heat energy consumption, expressed in kWh / kg of water is only between 0.3 and 1.
    The environmental impact is minimal.
    The process is extremely quiet.
    The process is characterized by simple operation.
    It has also been shown that the construction and maintenance costs are surprisingly low.
    The installation time can be kept extremely short because the system can be designed to carry out the drying process in container construction and delivered as a compact container.
    The process according to the invention is a new technique by means of which good to be dried, such as e.g. Sawn timber, firewood or other capillary porous material can be convectively dried in chambers.
    A major innovation in this case is that the ambient air used for drying is first passed through an absorbent body as a desiccant, in particular by a silicon dioxide body ("silica gel"), ie sucked in, before it is heated as then dried air, finely controllable electrically and warm and dry passes to the moist material to be dried and sweeps over or through the same.
    The water vapor initially contained in the environment air which enters the process and forms its water moisture is adsorptively bound in the absorbent body to its desiccant, the relative humidity being e.g. is lowered to about 3 - 10%, which corresponds to a wood moisture balance Ugl of about 1-2.5%.
    An absorbent body formed with silica gel is capable of binding about 120% of its own mass of water.
    The pre-dried air is then heated via one of the electric heating coil and then fed to the drying material. The air temperatures to be set depend on the material to be dried and are typically between 30 and 60 ° C. These temperatures are rather low in comparison to a hitherto customary fresh air / exhaust air (F / A) drying. The drying air in the chamber is adjusted via a PLC in accordance with a drying program that is adapted to the moist material. It then runs smoothly without any further action.
    Between the material to be dried and the ambient air, a vapor partial pressure gradient arises, the amount of which is determined by the relative humidity or by the good, that is, e.g. Wood moisture balance, from the good, especially wood moisture and from the
    Temperature in the drying chamber depends. The vapor partial pressure gradient is ultimately the driving force for the escape of the water molecules from the structure of the respective good, in particular wood. The larger this slope, and the higher the drying temperature is set, the faster the drying process, but the higher the risk of quality degradation due to too rapid drying.
    After flowing through the arranged in the drying chamber batch of the material to be dried, which is now enriched by the moisture from the Good drying air is passed as exhaust air from the drying room. After appropriate heating in the heating register, it passes the absorbent body loaded or saturated with moisture from the drying process and regenerates the same.
    Finally, the meanwhile largely steam- or, moist water-saturated air stream of the process or exhaust air passes through a cross-flow heat exchanger, with the help of which at least a large part of the residual heat energy still contained in the exhaust air flow is transferred directly to the intake air stream containing the sucked ambient air.
    The entire drying process preferably takes place with slight depression. Compared to the normal pressure, the pressure in the drying chamber or, in the entire process, lowered by about 50 to 500 Pa.
    This is achieved by virtue of the fact that the air flow is advantageously circulated through the material to be dried by means of a suction process which is activated by a suction fan in the exhaust air line through the entire process or through the entire system and is not circulated by means of "throughput". Press "the air, as is the case with the common procedures.
    The resulting pressure gradient between the moisture in the material to be dried, e.g. Wood, and the oppressiveness in its environment supports the moisture movement from the estate and has a positive effect on the drying process. It also reduces the unavoidable moisture gradients present in all drying processes over the cross section of the material to be dried, which, for example, reduces the formation of stresses in a material, in particular in wood.
    A very important aspect of the new technology is further the dehumidification of the intake air sucked in from the environment by means of the first part of the absorbent body,
    In the conventional fresh air or exhaust air drying, a reduction in the relative humidity is accomplished solely by heating the air, while known condensation and vacuum methods achieve this by condensing the water vapor over cold surfaces.
    In the method according to the invention, heating the air intended for drying is also necessary and useful, but to a much lesser extent than fresh air / exhaust air drying.
    Thus, in the method according to the invention with relatively low temperatures, a practical drying potential can be created. The relatively low temperatures cause in a favorable manner that comparatively small amounts of heat are needed and therefore a heating of the intended air for drying and the drying material by means of electrical energy economically quite favorable and therefore makes sense.
    The following table allows the comparison of the new drying process with conventional drying methods and clearly shows the invention significantly reduced heat energy consumption.
    Process Heat energy consumption in kWh / kgWater Fresh air-exhaust air drying Hardwood Skewed 1.3 - 2.2 Softwood Saw-fresh 0.9 - 1.3 Hardwood from fiber saturation 1.7 - 2.8 Softwood from fiber saturation 1.3 - 2.2 Vacuum Drying time according to system 0.7 - 3.0 Condensation drying according to the invention 0.35 - 1.2
    The conventionally achievable heat energy consumption figures reflect the average heat demand figures without the cost of electric power for conventional drying processes, as assessed by Trübswetter, 2006 and Brunner-Hildebrand, 1987: The requirement for electrical energy is not included herein because it is highly dependent on the method chosen and therefore fluctuates. It must therefore be calculated or calculated in individual cases. Real literature information does not exist.
    From the data determined by means of the process according to the invention, its energy demand can be derived as indicated above in the table, this value, in contrast to the values of the conventional drying processes, being the total energy requirement, ie the need for thermal plus electrical energy ,
    The essential advantage of the process according to the invention is that all the heat required is provided only by means of an electric heater, which makes the entire construction of the plant and the process management considerably simpler and thus considerably less expensive, thereby reducing the influence of the relatively expensive ones involved electric current is kept low.
    The embodiments of the invention described in more detail below offer various advantages.
    Thus, a method may be favorable, according to which at a humidity of the sucked ambient air of less than 10 g per kg of air of moisture water same via a - the respective provided for their dehumidification first or second moisture water adsorbent bypassing - directly through the same each downstream heating direction and then passed through the drying chamber with the material to be dried.
    Furthermore, it is advantageous to provide that before entering the drying process, the ambient air is passed through a heat exchanger through which the process air leaving the same, moisture-laden process air is withdrawn and preheated there at the beginning of the process becomes.
    With regard to the negative pressure applied when suctioning the drying air through the process or through the system for its implementation, it has proven to be economical if the air duct in the drying process by means of the negative pressure applied at the output end thereof, preferably by means of a negative pressure of 50 to 500 Pa, is carried out, so if the ambient air and the same from the same during the drying process formed from the moisture to be dried ago her moist process air is sucked through the drying process.
    According to claim 5, it is advantageous if, with too little difference, between the air-temperature and relative humidity sensors of the respectively second one arranged on the input and output side-that is to say after passing through the drying chamber with the material to be dried - in the there laden with water humidity and heated in the heater air flowed through - moisture adsorbent body determined absolute humidity data loaded with the moist water from the material to be dried in the drying chamber via a respective, both the on-heater and the adsorbent body bypassing line is discharged, and preferably so long until the respective serving for dehumidifying the ambient air, first moisture adsorbent body is at least substantially saturated with moisture, after which the switching of the direction of the vacuum air flow through the drying process in the respective counter-direction is made.
    According to a further variant of the new method can be provided that only a part, preferably 35 to 65%, of the guided through the drying chamber and there from the material to be dried with moisture laden air for heating the same by the respective on-heater and by the respective the same downstream moist water adsorbent body is performed, and that the remaining part of this laden with moisture water air bypassing both the heating device and the moist water adsorbent body is discharged through a - equipped with blocking element - bypass line. For a high speed of drying, it is preferable if, by means of the respective heating means, the temperature of the air flowing through it in the drying space is maintained in the range of 20 to 60 ° C, preferably 25 to 55 ° C, depending on the suction suppression .
    Furthermore, a variant is advantageous, which provides that the humidity to be dried from the moisture-containing air in the respective, preferably electric, heating device for the regeneration of the respective downstream arranged adsorbent body to a temperature of 50 to 100 ° C, in particular from 60 to 90 ° C, is heated,
    Finally, it is particularly effective if the ambient air for drying and the process air formed within the same with a given, preferably kept constant, volume flow, is sucked through the drying process.
    Another essential object of the present application is a new system for carrying out the previously described drying method, which is characterized in that - it has two connected via the drying chamber with the material to be dried, plant lines, - wherein in each case cyclically, periodically or alternately - Once on a - by a from the drying chamber through the discharge line discharged moisture-containing process air flow-through pre-heat exchanger guided - supply the ambient air taken from the environment via a first open air guide changeover in sequence by the first Plant line, ie by an air dehumidifier with input and output side arranged, equipped with a computing unit temperature and relative humidity measuring sensors equipped first humidity water adsorbent, - by a same downstream air heater, - by the with the drying material to be dried loaded drying chamber, and thereafter - by the second line of equipment, ie by an air-heating device and one of them downstream, acting as absorbent regenerating device, each input and output side - also connected to the computing unit - temperature and • «Λ ································································.
    Finally, as a process air via a second open changeover valve through the above-mentioned discharge to the environment can be deducted, - wherein at or after detection of substantially low Differences between the temperature and relative humidity measurement data of the respective measuring sensors of the first and / or the second absorbent body, in particular that of the "" first " Absorbent body, determined by the arithmetic and control unit absolute humidity data, - by closing the respective one of said air guide changeover, in particular -folding and opening the other of the air guide changeover the air flow from the direction: line A1,
    Drying chamber A10, line A2 in the opposite direction: line A2, drying chamber, line A1 can be switched. For optimal guidance of the system according to the invention, a variant is preferable, which provides that they each have two, only the respective - first and / or second - Absorbent body bypass lines and two both the respective - first and second - Absorbenskörper and the each associated - first or second- (Auf-) heating device has bypass lines bypassing. For the suction of the air intended for drying is advantageously provided that in the process air-discharge line, preferably a constant volume flow, regulated air-intake fan for the vacuum suction of the ambient and process air is arranged by said drying system.
    The system can be accommodated in a compact form in a device container of e.g. to any kind of drying chamber, which is optionally also created in container construction, can be connected. A novel efficient
    Adsorption drying antiaging system in the equipment container generates the necessary drying air, which is conducted by means of a, preferably operated with a negative pressure air circulation system in the convenient diffusion and airtight drying space. In particular, for everywhere replaceable and transportable systems can thus be provided that the drying chamber as such, and the two lines of equipment with the ambient air supply and process air discharge lines are each arranged in a portable container or both but just mentioned plant parts in only one Container.
    With regard to the heating or heating of the air to be used for the drying of the goods, it has proved to be favorable to provide an electric tube heating coil as the air heating device or as the air heating device.
    Finally, it should be additionally stated that the heat exchanger to be flowed through by the discharged warmer process air and by the cooler ambient air at the air inflow and outflow side of the installation is a plate heat exchanger.
    Reference to the drawing, the invention is explained in more detail:
    Ambient or outside air Ul is sucked in via a filter, after which the measurement of air temperature and relative humidity is carried out by means of the sensors TC5, MC5. About one of the extracted from the drying process 100, the drying still warm and humid exhaust air or process air P! flowed through the double cross-flow heat exchanger KSWT is then fed the sucked ambient air Ul and preheated there. The process air PL can condense in the heat exchanger KSWT, whereby there may be the risk of ice formation, for example. exists in colder winters.
    By means of the control unit 110, the control of the two air flaps LK6 / LK7 provided for the air direction switching takes place, wherein the air flap LK6 is opened and the air flap LK7 is kept closed. In this way, the sucked ambient air Ul takes the airway with the direction LW1 through the line A1 of the drying system 100th
    After switching, when the regeneration phase of the adsorbent body 1 takes place in the aforementioned airway LW1, then the two other air flaps LK4 / LK5 would be controlled accordingly.
    The air flows to the air flap LK6 through a sensor section in which a measurement of the air temperature and the relative humidity by means of the sensors TC1, MC1 takes place. The data obtained by the above-mentioned sensors TC5, MC5 and by the aforementioned sensors TC1, MC1 are supplied to the central control unit 120. The moist ambient air Ul then flows through the absorbent body 1, which is preferably formed by silica gel. There the air is deprived of, or at least much of the water contained in it.
    The consequence of this is that the absolute humidity of the air decreases and the temperature of the air rises slightly. Via a bypass B1, which can be opened by means of the air flap LK9, the absorbent body 1 can be bypassed if the intake ambient air is already dry enough, as e.g. in the winter is often the case.
    After passage of the absorbent body 1, a new measurement of air temperature and air relative humidity by means of the sensors TC2, MC2, which is also connected to the central computing and control unit 120, which consists of the two pairs of values of temperature and relative air humidity before and after the Absorbent body 1 determines the absolute humidity in the air.
    If the difference between the values before and after the absorbent body 1 is recognized to be small or too small, e.g. the absorbent body 1 has taken too little moisture water from the air, the same must be regenerated, so the cycle would then be reversed and would begin with the air direction LW2 through the investment line A2.
    The dried air in the absorbent body 1 is heated in the electric heater E1 to a respectively desired or drying-effective temperature.
    Due to the relatively large inertia, this can be done by the electric register heater E1 via a contactor, e.g. be controlled with 24 V control voltage. The control variable for the control of the heaters E1 and E2 is ultimately the air temperature in the drying room, which is measured there by means of thermo-sensor TC6. In addition, this sensor ensures the safety temperature limitation in the area of the heating element of the heaters E1 and E2.
    In the drying room 10 with the moist dry material 11, the air flowing in there is e.g. distributed over perforated plates or the like, flows over and / or through the material 11 to be dried, e.g. Wood absorbs its moisture and cools off adiabatically. In the drying room 10, preferably temperatures between about 30 and 55 ° C prevail.
    The exhaust air or process air PI flowing from the drying chamber 10, or which continues to be sucked in there and then laden with moisture, then passes into the contact line 2 where it is heated relatively high by means of the electric heating device E2, which now functions as an on-heating device, and is guided through the absorbent body 2 in order to free it from the damp water absorbed by it during the previous passage, ie to regenerate it. By means of the flap LK2 in the bypass B20, part of the exhaust air volume flow can be led around the heating device E2 and around the absorbent body 2. Then only a partial flow (e.g., about 50% at, for example, 600 m 3 / h) is passed through the absorbent body 2, e.g. sufficient to regenerate the same.
    By measuring air temperature and relative air humidity with the sensors TC4, MC4 before and the sensors TC3, MC3 after the absorbent body 2, the actual amount of moisture-water desorbed from the absorbent body 2 can also be determined by the computing and control unit 120. When this value becomes too small, the regeneration of the absorbent body 2 is completed, and the same is bypassed via the by-pass B20 with damper LK8. Hiebei then the heating of the air is stopped in the on-heater E2.
    It should be noted here that analogy to the bypasses B2, B20 in the plant line 1 bypasses B1 and B10 are provided with louvers LKt and LK9.
    The further path of the process exhaust air is specified via the corresponding positions of the louvers LK4 and LK7.
    By means of the exhaust fan A V1, the waste or process air PI is controlled by means of frequency converter for the suction fan to constant flow, with the control variable preferably the differential pressure (system to environment) is used.
    After passing through the temperature sensor TC7, the process exhaust air PI finally flows into the atmosphere via the KSWT dual cross-flow heat exchanger already mentioned above. In most operating conditions humidity condenses here, whereby in winter the danger of ice formation has to be considered. About a heat exchanger KSWT immediate line with the air damper LK3, the entire system 100 or the entire process can also be operated in recirculation mode for the duration of each heating phase.
    The direction change is conditioned by the states of the absorbent bodies 1 and / or 2. At full loading of the respective, responsible for the drying of the air absorbent body 1 and / or 2, a change in the direction of ventilation in the respective opposite direction. It is preferable to move all louvers LK1 to LK9 with Belimo 24V motors.
    In addition, it should be noted that all louvers LK1 to LK 9 are connected to the computing and control unit 120 supplied with the measurement data of all the temperature sensors TC1 to TC7 and all humidity sensors MC1 to MC7 and can be controlled, in particular opened and closed, by the same.
    权利要求:
    Claims (15)
    [1]
    1. A process for drying goods, in particular of piece and Rieselgut of inorganic or mineral or biological materials, fuels, wood and food extracted with the surrounding air, which moisture water by means of one of two, each switchable, flowed through by the same Moisture water · adsorbent body or layers is withdrawn, and then the moisture to be dried removed moisture is removed and wherein in each case after saturation of at least one of the two adsorbent body or layers with moist water, the same freed by the supply of heat from the moisture water adsorbed by him , that is, regenerated, characterized in that - the drying process is performed so that the ambient air (Ul) while sucking the same cyclically or periodically - first in a constant order continuously successively - by a - on the input and output side arranged Messsenso ren for air temperature and - Relative humidity (TC1, MC1, TC2, MC2) - first, previously regenerated moisture-water adsorbent body (1), in which the ambient air (Ul) the inherent moisture is at least largely removed, - by a first heating device (E1), in which the air dehumidified in the first adsorbent body (1) is heated, - by a drying chamber (10), in which the dehumidified and heated air with the material to be dried (11) arranged there to be withdrawn and withdrawn - moist water is loaded, the same thereafter - by a second on-heater (E2), in which the loaded with moisture water from the material to be dried process air (PI) is heated to higher temperature, - and this moisture-laden heated process air ( PI) by a second humidity-water-absorbent sorbent, also equipped with measuring sensors for air-temperature and relative-air-humidity (TC4, MC4, TC3, MC3) on the input and output side ör body (2) is guided, - in which with simultaneous regeneration of the same heated humid air with the in this adsorbent body (2) in the previous cycle, optionally to saturation, absorbed fountain and further discharged to the outside, and - this direction the air guide is respected until, between each of the two supplied from the input and output side first and second measuring sensors of the first adsorbent body and / or the second adsorbent, from the temperature and the respective associated relative humidity measurement data, preferably by means of a central computing and control unit, converted absolute humidity data of the air before and after at least one, preferably each, the two Adsorbenskörpem only a small or substantially no difference is detectable, - then made a switch of the airway direction and the Luf t is then guided or sucked through in each case in the opposite direction by the drying process,
    [2]
    2. The method according to claim 1, characterized in that at a humidity of the sucked ambient air (Ul) of less than 10 g per kg of air the same via a - provided for their dehumidification first or second moisture-water adsorbent body (1 or 2 ) bypassing - Bybassleitung (B1 or B2) directly by the same respective downstream heating direction (E1 or E2) and then each through the drying chamber (10) with the material to be dried (11) is guided.
    [3]
    3. The method according to claim 1 or 2, characterized in that the ambient air (Ul) prior to their entry into the drying process through a - from the same leaving, laden with moisture process air (PI) and the same process heat withdrawing heat exchanger ( KSWT) and preheated there.
    [4]
    4. The method according to any one of claims 1 to, characterized in that the air guide in the drying process by means of the output side end (s) of the same applied negative pressure, preferably by means of a negative pressure of 50 to 500 Pa, made, so the ambient air (Ul) and the From the same moisture-laden process air (PI) formed in the course of the drying process is sucked through the drying process.
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that - with too little difference between the respective input and output side arranged air-temperature and -Relativfeuchte sensors (TC4, MC4, TC3, TC3 and MC2 , After passing through the drying chamber (10) with the material to be dried (11) from the - in the loaded there with water moisture and in the heating device (E2 or E1) heated air - flowed through, - TC2, TC1, MC1) of the second Humidity water adsorbent body (2 or 1) determined Absoiut-Feuchtedaten - with the moist water from the material to be dried (11) in the drying chamber (10) loaded air via one each, both the on-heating device (E2 or E1) as well as the adsorbent body (2 or 1) bypassing bypass line (B20 or B10) is discharged, - and preferably so long until the respective, for dehumidifying the ambient air (Ul) serving, first moisture water adsorbent body (1 or , 2) with Feu chtewasser is at least substantially saturated, - after which the switching of the direction of the negative pressure air flow is made by the drying process in the respective counter-direction.
    [6]
    6. The method according to any one of claims 1 to 5, characterized in that - only one part, preferably 35 to 65%, of the air through the drying chamber (10) and there from the material to be dried (11) with moisture laden air for heating the same by the respective on-heating device (E2 or E1) and by the respective same downstream moist water adsorbent body (2 or 1) is guided, and - that the remaining part of this laden with moisture water air, bypassing both the on-heating device (E2 or E1) and the moisture adsorbent body (2 or 1) through a bypass line (B20 or B10) is discharged.
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that by means of the respective heating device (E1 or E2) in the drying chamber (10), the temperature of the same air flowing through in the range of 20 to 60, preferably from 25 to 55 ° C, is held.
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that the moisture to be dried from the goods to be dried (11) having air in the respective, preferably electrical, heating device (E2 or E1) - for the regeneration of the respective same downstream adsorbent body (2 or 1) to a temperature of 50 to 100 ° C, in particular from 60 to 90 ° C, heated.
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that the ambient air (Ul) for the drying and the process air formed there (PI) with a, preferably kept constant, volume flow, is sucked through the drying process.
    [10]
    10. Plant for drying of goods, in particular of piece and Rieselgut of inorganic or mineral or biological materials, fuels, wood and food, extracted with the environment air, with leadership of the intended drying agent, ambient air through two regenerable by heat Moisture-water adsorbent body (1, 2) and a drying chamber (10) arranged between them with the material to be dried (11) according to one of claims 1 to 10, characterized in that - they are connected to each other via the drying chamber (10), plant lines (A1) and (A2), - in each case cyclically, periodically or alternately once via a pre-heat exchanger through which a moisture-containing process air (PI) through which the drying chamber (10) passes through the discharge line (92) can flow (KSWT) guided supply line (91) the environmental air extracted from the environment (Ul) via a first open Luftführu ngs switching device, in particular flap (LK5) in turn by the first system line (A1), ie by an air dehumidifier with input and output side arranged, with a computing unit (100) connected temperature and relative humidity measuring sensors (TC1, MC1; TC2 , MC2) equipped first moisture-water adsorbent body (1), - by one of the same downstream air heater (E1), - by the drying chamber (10) fed with the material to be dried (11), and then - by the second system line (A2 ), ie by an air heating device (E2) and one of them downstream, acting as absorbent regenerating device each input and output side - also connected to the computing and control unit (110) temperature and relative humidity measuring sensors (TC4, MC4; TC3 , MC3), laden with moisture or substantially saturated second moisture adsorbent body (2) feasible and - finally as a process - or exhaust air (PI) via a second open switching element, in particular flap (LK7) by the aforementioned discharge line (92) can be discharged to the environment, - wherein at or, after finding substantially small differences of the computing unit (100 ) from the temperature and relative humidity measurement data from the respectively associated measuring sensor pairs (TC1, MC1; TC2, MC2) and (TC4, MC4, TC3, MC3) of the first and / or the second absorbent body (1 + 2 or 2 + 1), in particular that of the respective first absorbent body (1 or 2), by the calculation unit. Control unit (101) determined absolute humidity data, - by closing said air guide switching means, in particular - flaps (LK5, LK7) and opening the air guide switching means, in particular - flaps {LK4, LK6) the air flow from the direction; Plant line (A1) Drying chamber (10) plant line (A2) in the then opposite direction: plant line (A2) drying chamber (10) - system line (A1) is switchable.
    [11]
    11. T rocknungsanlage according to claim 10, characterized in that they each two, only the respective absorbent body (1, 2) bypass lines immediately bypassing (B1, B2) and two both the respective absorbent body (1, 2) and the him respectively associated (on) heating device (E1, E2) bypass bypass lines (B10, B20) has.
    [12]
    12. Drying system according to claim 10 or 11, characterized in that in the process air-discharge line (92) one, preferably regulated to constant volume flow, air intake fan (Av) for the vacuum suction of the ambient and process air (Ul, PI) is arranged by said drying plant (100).
    [13]
    13. Drying installation according to one of claims 10 to 12, characterized in that the drying chamber (10) as such, and the two plant lines (A1 and A2) with the ambient air supply and process air discharge lines (91, 92) together, respectively are arranged in a, preferably portable, container.
    [14]
    14. Drying plant according to one of claims 10 to 13, characterized in that the respective air heater (E1, E2) and the respective air-on-heater (E2, E1) are formed with an electric tube heating,
    [15]
    15. Drying plant according to one of claims 10 to 14, characterized in that the heat exchanger (KSWT) to be flowed through by the removed warmer process air (PI) and by the cooler ambient air (U1) is a plate heat exchanger. Vienna, September 15, 2010
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    同族专利:
    公开号 | 公开日
    WO2012034147A1|2012-03-22|
    EP2507569A1|2012-10-10|
    AT510486B1|2012-07-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH0363485B2|1984-02-25|1991-10-01|Kubota Karaa Toronitsuku Kk|
    JPH06500736A|1991-06-21|1994-01-27|
    US5768897A|1992-06-16|1998-06-23|Universal Dynamics Corporation|Air drying apparatus and method with high ratio gas flow to absorber weight|
    US5485686A|1994-05-25|1996-01-23|Dri-Air Industries, Inc.|Hi-performance desiccant tower|
    DE10233015A1|2002-07-20|2004-02-05|Mann + Hummel Gmbh|Device and method for drying a gas stream|
    AT412999B|2002-11-12|2005-09-26|Wiedl Alfred|APPENDIX FOR DRYING GOODS|IT201800005341A1|2018-05-14|2019-11-14|Dehumidification Method and Apparatus|
    IT201800005342A1|2018-05-14|2019-11-14|Dehumidification Method and Apparatus|
    法律状态:
    2016-05-15| MM01| Lapse because of not paying annual fees|Effective date: 20150915 |
    优先权:
    申请号 | 申请日 | 专利标题
    AT15382010A|AT510486B1|2010-09-15|2010-09-15|DRYING METHOD AND APPARATUS FOR CARRYING OUT THE METHOD|AT15382010A| AT510486B1|2010-09-15|2010-09-15|DRYING METHOD AND APPARATUS FOR CARRYING OUT THE METHOD|
    EP20110760681| EP2507569A1|2010-09-15|2011-09-06|Drying method and system for carrying out the method|
    PCT/AT2011/000364| WO2012034147A1|2010-09-15|2011-09-06|Drying method and system for carrying out the method|
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