• 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 thin - film evaporator (1) comprising a closed, essentially cylindrical reactor vessel (10) with a heatable reactor wall (12), an inlet (30) for the feedstock to be separated, an outlet (40) for the residues and a vent (50) for the vapors, and at least one drive shaft arrangement (80) connected to a drive means (60), comprising at least one wiper device (110) with a rotor (120) with wiper elements (125) for the inner surface (13) of FIG Has reactor wall (12). The reactor vessel (10) has two adjoining zones (100, 200), namely a first evaporator zone (100) with at least one first wiper device (110) and a second evaporator zone (200) with at least one second wiper device (210) comprising a rotor ( 220) with wiper elements (225), wherein the drive shaft arrangement (80) has a first drive shaft (81) and a second drive shaft (82) and the at least one first wiper device (110) on the first drive shaft (81) and the at least one second wiper device (210) are fixed to the second drive shaft (82), and the drive means (60) is adapted to drive the first drive shaft (81) in the first evaporator zone (100) at a speed (130) different from that speed (230 ) of the second drive shaft (82) in the second evaporator zone (200) is different.
    公开号:AT516504A4
    申请号:T50480/2015
    申请日:2015-06-12
    公开日:2016-06-15
    发明作者:
    申请人:Gig Karasek Gmbh；
    IPC主号:
    专利说明:

    THIN FILM EVAPORATOR
    The invention relates to a thin-film evaporator for separating easily volatile fractions of high-boiling residues by evaporation, with a closed, substantially cylindrical reactor vessel, the reactor wall is heated by a heater, with an inlet for the feed material to be separated, an outlet for the residues and a vent for the vapors, and at least one, connected to a drive means drive shaft assembly having at least one wiper device with a rotor with wiper elements for the inner surface of the reactor wall.
    The material separation by evaporation with subsequent condensation of the vapors is one of the thermal separation processes. It is used to separate liquid mixtures into lighter and heavier fractions. For example, water can be separated from organic substances. On an industrial scale so-called thin-film evaporators of the type mentioned above are often used. A thin-film evaporator is an evaporator that vaporizes solutions in a thin film. It is usually operated in a vacuum and is therefore suitable for gentle separation of mixtures at relatively low temperatures.
    The substantially cylindrical reactor may be arranged vertically, wherein the substance mixture is placed on top, evenly distributed by means of a suitable device and flows down on the inner surface of the reactor wall as a thin film. The jacket side usually heats with heating steam or heat transfer medium (such as hot water or thermal oil). By supplying heat evaporate the lower boiling components (in the example water), leaving a concentrate. The generated vapors are called vapors and flow e.g. in countercurrent to the liquid and are sucked off at the top of the reactor. In a separator possibly entrained liquid droplets are separated. Subsequently, the vapors can be deposited for example in a condenser against cooling water. Turbulence in the film and thus a good heat transfer is ensured by a sufficient wetting of the inner surface of the reactor wall.
    Due to the gravity of vertical evaporators and / or by means of suitable mechanical elements, the feedstock is conveyed through the evaporator.
    The application possibilities can be very different: By way of example, thin-film evaporators can be used to gently separate feedstocks that are as thin as water or thick as honey, into their components or fractions. Furthermore, feedstocks which are present in multiphase can also be evaporated in the thin-film evaporator. During the evaporation process, the properties of the feedstocks change: The intermediate products or products become, for example, tough and sticky like chewing gum, granular and abrasive like sand and / or form deposits on the heat exchange surfaces of the evaporator. Depending on the thermal separation task and depending on the feed materials to be evaporated, various mechanically acting wiper systems with different wiper elements are available for this purpose in order to ensure the most uniform possible film - a thin film - on the evaporator surface inside the reactor.
    In general, existing empirical values and / or pilot tests decide on the choice of the wiper system most suitable for the respective separation task. Basically, the selection of the wiper system according to the properties (viscosity, thermal conductivity, dry matter content, adhesion tendency, etc.) of the feedstock and the residue products or the dried material. Applicants have different wiper systems with different wiper elements available under the names "block film", "dry film", "ecofilm", "power film", "purefilm", "roller film" or "spring film" Thin-film apparatuses can also be used in series or in parallel if the product properties of the starting materials to be separated change very greatly during evaporation.For example, a vertical evaporator with so-called trailing wiper blades, for example hinged sheets of plastic or metal, can be used by the Applicant the term "Ecofilm" are sold and which are pressed by centrifugal force on the film surface and thereby pass the material to be evaporated, and a horizontal evaporator with a fixed impeller rotor are connected in series. In a fixed-blade rotor, a rotor with screwed-on or welded-on wiper elements with a defined gap between the wiper element and the reactor wall is usually used. The disadvantage here, however, the higher investment and operating costs of the two units.
    For economic reasons, therefore, usually only a thin-film evaporator is used for a particular separation task. When choosing the appropriate wiper system, therefore, often a compromise must be made. Nevertheless, optimal profitability is not achieved. Often, the thin-film evaporator must be oversized, since the selected wiper system can not optimally circulate the feedstock or the intermediates during the evaporation process in the entire inner region of the reactor or can not evenly distribute it over the entire evaporator surface.
    Attempts in advance to equip a wiper rotor with different wiper elements, have not yet shown the desired success, since different wiper systems each achieve optimal efficiency at different peripheral speeds or rotor speeds. Thus, for example, wiper systems of the Applicant, which are designed as all-metal wiper with thick, heavy, hinged sheets of metal, which are pressed by centrifugal force from the film and are used in higher viscous products and under the name "Power Film" on the market 2.5 m / s are usually used for final drying, for example pendulum-suspended wiper elements, which are pendulum-suspended metal blades which almost touch the reactor wall and, due to the high speed, knock off crusts and the like from the heating surface, or However, the ideal peripheral speed is about 8 m / s, which is why a combination of different wiper elements on one and the same wiper rotor is currently not appropriate.
    An object of the invention is therefore to provide a thin-film evaporator, in which the disadvantages described above are eliminated or largely avoided and with the most flexible Ver vapor it is guaranteed operation.
    This object is achieved with a thin-film evaporator of the type described, in which according to the invention the reactor vessel has two adjacent zones, namely a first evaporator zone with at least a first wiper device comprising a rotor with wiper elements, and a second Ver steamer zone with at least a second wiper device comprising a rotor with wiper elements for the inner surface of the reactor wall, wherein the drive shaft assembly has a first drive shaft and a second drive shaft and the at least one first wiper device on the first drive shaft and the at least one second wiper device are attached to the second drive shaft, and the drive means is adapted to first drive shaft in the first Ver vapor it to drive zone at a speed which is different from that speed of the second drive shaft in the second Ver vapor.
    Further advantages and features of the invention will become apparent from the dependent claims and the following description.
    Advantageously, in a thin-film evaporator according to the invention in the interior of the reactor vessel in two different zones, which are referred to here as the first and second Ver vapor, different speeds of the respective wipers are set. As a wiper device is in the context of the application in each case a rotor with the corresponding wiper elements, which are adapted to the contour of the inner surface of the reactor wall and during operation, when the wiper device is thus moved or rotated at a peripheral speed about a drive shaft, for a thin Liquid or solid film of the materials to be separated at the evaporation Ver surface on the inner surface of the reactor wall provides. In the context of the invention, depending on the feedstocks to be evaporated, a wide variety of wiper devices known from the prior art can be used which have, for example, fixed blades, wiper blades, pendulum blades and / or radial wipers, wherein the wiper elements are made of steel, plastic, Rubber or can be made of a brush-like material. Furthermore, in the context of the invention along the first drive shaft in the region of the first evaporator zone, one or more first wiping devices of the same type or of different types may be used. Likewise, along the second drive shaft in the region of the second evaporator zone, one or more second wiping devices of the same type or different types may be used. The at least one first wiper device of the first evaporator zone and the at least one second wiper device of the second evaporator can thus be embodied in the same design and execution or else in different designs.
    Since the drive means is adapted to drive the first drive shaft in the first evaporator zone at a first speed, which is different from that second speed of the second drive shaft in the second evaporator zone, advantageously the evaporator surface of the first evaporator zone, for example, closer to the inlet for the is arranged to be separated feed and therefore represents an entry zone for the still liquid feed, be wiped with a comparatively slower speed than in the adjacent second evaporator zone. In the second evaporator zone, in which, for example, a drying of the previously depleted in the first evaporator zone as far as possible depleted of a more volatile fraction residue is swept here erzone example, with a relatively higher speed than in the first Ver, to sticking the thickened residue to prevent the reactor wall. The dried residue, which is also referred to as a concentrate, after passing through the second Ver vaporizer, which is also referred to as the exit zone and can be carried out on the heating side separated from the first evaporation zone, discharged via the outlet for the residue from the thin-film evaporator. The more volatile components or components of the feedstock leave as vapor via the vapor draw the thin film evaporator. Likewise, within the scope of the invention, the first rotational speed with which the first evaporator zone is wiped can also be higher or equal than the second rotational speed with which the second drive shaft is driven or with which the second wiping devices are rotated in the second evaporator zone ,
    Thus, in the thin film evaporator according to the invention for the materials to be evaporated in each case individually optimally optimized modes can be set, advantageously the number, type or design of the wiping means and the speed or the peripheral speed at which moves the wiping in the individual evaporator zones can be adjusted or varied.
    In particular, if the separation rate of lower boiling fractions is no longer determined by the heat transfer during evaporation, but is already diffusion-limited, correspondingly high wiping frequencies and increased residence times are very advantageous in order to achieve a high yield in the evaporation.
    In an expedient embodiment of the invention, in a thin-film evaporator, the first rotational speed of the first drive shaft for the at least one first wiper device in the first evaporator zone may be lower than that rotational speed of the second drive shaft for the at least one second wiper device in the second evaporator zone. As already mentioned above, a comparatively higher rotational speed of the second drive shaft or the wiper devices attached to this second drive shaft in the second evaporator zone has the advantage that in this region the evaporator surface in which the final drying takes place and the residues to be dried are often particularly tough and sticky, an unwanted caking or sticking of the residue is prevented by a higher speed or a higher peripheral speed of the wiping devices.
    In a thin film evaporator according to the invention, the first drive shaft and the second drive shaft can be arranged concentrically with each other particularly advantageously. In this particularly compact embodiment of the invention, the first drive shaft and the second drive shaft are arranged concentrically or coaxially with each other, whereby the storage of the two drive shafts is simplified.
    In a further advantageous embodiment of the invention, in a thin film evaporator, the second drive shaft passes through the first, hollow drive shaft. This embodiment offers due to the particularly compact design - the second drive shaft is guided within the first drive shaft - advantages especially in existing thin-film evaporators to be converted from an existing single drive shaft to a shaft assembly according to the invention with two drive shafts.
    Suitably, in one embodiment of a thin film evaporator according to the invention, the longitudinal axis of the cylindrical reactor vessel is substantially horizontal. In this embodiment, the reactor vessel is arranged horizontally. The wiping devices serve to distribute the material to be evaporated, which flows downwards in the direction of gravity on the inner surface of the heated reactor wall, as uniformly as possible over the entire circumference or inner jacket of the inner surface of the reactor.
    In an alternative embodiment of the invention, in a thin film evaporator, the axis of the cylindrical reactor vessel is substantially vertical. In this embodiment, the reactor vessel is arranged upright and the wiping devices serve to distribute the material to be vaporized, which flows downwards in the direction of gravity on the inner surface of the heated reactor wall, as uniformly as possible over the entire circumference or inner jacket of the inner surface of the reactor.
    In an advantageous embodiment of the invention, the two drive shafts are connected via a planetary gear with a motor in a thin-film evaporator. The gears rotating on the rotating shaft axes or planetary gears orbiting a central gear, which is referred to as a sun gear, similar to planets, the sun. Planetary gear or epicyclic gears are compact gearboxes with the special feature that the two drive shafts, which are also referred to as drive and driven shaft, aligned with each other.
    Preferably, the gear ratio of the planetary gear is in the range of 1: 2 to 1: 6. Thus, the two drive shafts for the first and the second wiper devices can be operated at different relative speeds or at different relative rotational speeds by a drive means or by a motor by means of the planetary gearing.
    In a thin film evaporator according to the invention, it may be expedient if the drive has at least one speed-controlled electric motor. Advantageously, with a speed-controlled electric motor, the speed of the shaft assembly and thus the rotational speeds of the first drive shaft and the second drive shaft can be adjusted.
    In a further preferred embodiment of the invention, a separate drive is associated with each of the two drive shafts in a thin-film evaporator. In this embodiment eliminates the planetary gear. In this particularly robust embodiment of the invention, each drive shaft has its own drive, for example, in each case a speed-controlled electric motor on. Advantageously, the two drives can be maintained independently or replaced if necessary.
    In the context of the invention, in the case of a thin-film evaporator, the heating device may comprise zone-by-zone heating sections on the shell-side reactor wall, the heating sections being heatable with different heating media and / or the heating sections being adjustable to different temperature levels. Particularly useful in this embodiment, different heating zones or heating sections along the heated shell-side reactor wall can be realized. Optionally, the heated jacket zones of the reactor wall can be subdivided, so that different heating media with different temperature levels can also be used to heat the thin-film evaporator.
    In a further expedient embodiment of the invention, in a thin-film evaporator having a first heating section, the shell-side reactor wall of the first evaporator zone and, with a second heating section, the shell-side reactor wall of the second evaporator zone can be heated separately from one another.
    The invention together with further features is explained in more detail below with reference to illustrative embodiments, which are illustrated in the schematic drawings. In this show
    Fig. 1 in a partial sectional view from the side of a first embodiment of a thin-film evaporator according to the invention;
    Fig. 2 is a sectional side elevational view of a detail of the thin-film evaporator shown in Fig. 1;
    Fig. 3 is a plan view of a planetary gear, wherein the section line A-A corresponds to the sectional view shown in Figure 2.
    Fig. 4 in an isometric view obliquely from above the planetary gear shown in Fig. 2.
    FIG. 1 illustrates a thin-film evaporator 1 according to the invention with a substantially cylindrical reactor vessel 10, which is shown standing here, ie with a vertical axis direction 11 of the reactor vessel 10. A reactor wall 12 has a smooth, cylindrical inner surface 13 which is provided with an outer heating jacket 20 or a heating device 20 and serves as a heatable evaporator surface 13. The heating device 20 is flowed through by a heating medium, for example superheated steam or thermal oil.
    In FIG. 1, the heating device 20 is subdivided zone-wise or section-wise into a first heating section 21 and a second heating section 22, through which different heating media flows, for example. Thus, the first heating section 21 is heated by a first heating medium, which passes at an arrow-shaped inlet 23 into the heater 20 and flows through the heat exchanger principle in cocurrent or countercurrent with respect to the reactor interior to be evaporated feedstock the first heating section 21 of the heater 20 and this leaves again at an exit 24. In the first heating section 21, a first heating temperature level TI is adjustable. The second heating section 22 is heated by a second heating medium, which passes at an arrow-shaped inlet 25 into the heater 20 and also flows through the heat exchanger principle in cocurrent or countercurrent with respect to the reactor interior to evaporate feed the second heating section 22 of the heater 20 and this leaves again at an exit 26. In the second heating section 22, a second heating temperature level T2 can be set which, depending on the separating task, is hotter or colder than the temperature level TI of the first heating section 21. Corresponding circulation lines of the heating medium or optionally separate circulation lines for different heating media are also not shown for the sake of clarity in Fig. 1.
    The reactor vessel 10 also has an inlet 30 for the feedstock to be separated and an outlet 40 for a residue / concentrate, ie the low volatility fraction of the feedstock to be evaporated, and a vapor draw 50 for the more volatile fraction of the feedstock to be vaporized, referred to as vapors. The entering or exiting streams 30, 40, 50 are each symbolized by arrows, with corresponding known from the prior art piping or collection containers are not shown. Furthermore, a vacuum generation apparatus usually required for gentle evaporation, together with the connection lines required for this purpose, and the corresponding control devices are not shown in FIG.
    At the top of the thin film evaporator 1, a drive means 60 or a motor 60 is flanged to a planetary gear 70. The planetary gear 70 acts on a drive shaft assembly 80 having a first drive shaft 81 and a second drive shaft 82 which are arranged concentrically to each other and wherein the second drive shaft 82 passes through the first, hollow drive shaft 81 formed. The shaft passage of the drive shaft assembly 80 is sealed with a mechanical seal 85 to the interior of the reactor vessel 10. Furthermore, a seal 86 between the two drive shafts 81 and 82 is provided. A mist eliminator 87 prevents here easily volatile feed directly from the feed inlet 30 - passes without entering the evaporation zone - in the vapor vent 50 and thus passes without sufficient contact or sufficient residence time in the evaporator zone, the thin-film evaporator 10 without evaporation.
    The first drive shaft 81 has a first drive shaft axis 91, which is here arranged concentrically or coaxially with the second drive shaft axis 92 of the second drive shaft 82. The two drive shafts 81, 82 are advantageously mounted in a common Fußlager 95. The feedstock to be separated passes through the inlet 30 into a first evaporator zone 100 in the reactor vessel 10, also referred to as the entry zone 100. Along the first drive shaft 81, a plurality of first wiper devices 110 are fastened here, which in each case have a first rotor 120 with first wiper elements 125 fastened in each case to the rotor blades in the radial direction of the rotor 120. The rotor 120 is shown schematically here, for example with two diametrically opposite wiper elements. It is also conceivable within the scope of the invention to use rotors with only one wiper blade and / or rotors with more than two wiper elements. The first drive shaft 81 is driven by the motor 60 at a first speed 130, which is illustrated as arrow 130.
    In the longitudinal axis direction 11 directly adjacent to the first Ver vapor 100 adjacent there is a second Ver vaporized zone 200, which may for example be referred to as exit zone 200, since this second Ver vapor 200 in Fig. 1 further below the inlet 30 for the feed to be separated is located near the outlet 40 for the concentrate. In the second evaporator zone 200, a plurality of second wiper devices 210 are fastened to the second drive shaft 82, which each have a second rotor 220 and second wiper elements 225 fastened to the rotor blades thereof. The second wiping devices 210 are here rotated at a second speed 230, wherein the second speed 230 is again illustrated by an arrow 230. The second drive shaft 82 is also driven by the motor 60 here.
    A per se known planetary gear 70, which is shown in Fig. 2 in a sectional view from the side in detail, serves to adjust the different speeds 130, 230, with which the first drive shaft 81 and the second drive shaft 82 of the common motor 60 are driven. In Fig. 2 are known per se, the relevant transmission components of a planetary gear 70 in more detail: The here inner second drive shaft 82 forms the driven shaft, which with a key, not shown, inserted into a shaft groove 84 of the driven drive shaft 82, with the Motor 60 is coupled. This driven drive shaft 82 is provided with a sun gear 71. To this sun gear 71, the outer planetary gears rotate. A ring gear 73 is bolted to the housing of the planetary gear 70. A planet carrier 74 is coupled to the outer first drive shaft 81.
    For example, in the case of a vertically arranged thin film evaporator 1, as shown in FIG. 1, which has an inner diameter of the inner surface 13 of the reactor wall 12, for example 1000 mm, a first rotational speed 130 of the first drive shaft 81 can be, for example, 48 revolutions / min [1 / min] can be realized with a peripheral speed of 2.5 m / s for a first wiper device 110 in the first evaporator zone 100. The wiper device 110 is embodied in the first evaporator zone 100, for example in accordance with the statements "Ecofilm" or "Powerfilm" by the applicant as an all-metal wiper. The inner, driven second drive shaft 82 rotates at a second speed 230, for example, of 153 revolutions / min [1 / min], in the lower, second evaporator zone 200 are, for example, wipers 210 with pendulum-suspended steel blades in use, by the Applicant This results in a transmission ratio of 1: 3.2 for this embodiment.
    FIG. 3 shows a plan view of the planetary gear 60, wherein the section line A-A corresponds to the sectional view shown in FIG. 4 shows in an isometric view obliquely from above the planetary gear 60 shown in FIG.
    List of Reference Numerals I Thin-Film Evaporator 10 Reactor Container II Axis Direction of Reactor Container 12 Reactor Wall 13 Inner Surface of Reactor Wall 20 Heater or Heating Jacket 21 (First) Heater Section 22 (Second) Heater Section 23 Inlet (First) Heater (Arrow) 24 Exit (First) Heater (Arrow) 25 Inlet (second) heating medium (arrow) 26 Outlet (second) heating medium (arrow) 30 Inlet for the feed to be separated (arrow) 40 Outlet for residue / concentrate (arrow) 50 Vapor extraction (arrow) 60 Drive, motor 70 Planetary gear 71 Sun gear 72 Planetary gear 73 Ring gear 74 Planetary gear carrier 80 Drive shaft assembly 81 First drive shaft 82 Second drive shaft 84 Shaft groove 85 Mechanical seal 86 Sealing between the two drive shafts 87 Drip separator 91 First drive shaft axis 92 Second drive shaft axis 95 Feet bearing 100 First evaporator zone (entry zone) 110 First wiper device 120 First rotor 125 First wiper sheet 130 first speed (arrow)
    List of reference numerals (continued) 200 second evaporator zone (exit zone) 210 second wiper device 220 second rotor 225 second wiper blade 230 second speed (arrow) TI heating temperature in the first heating section T2 heating temperature in the second heating section
    权利要求:
    Claims (12)
    [1]
    claims
    1. thin-film evaporator (1) for separating easily volatile fractions of high-boiling residues by evaporation, with a closed, substantially cylindrical reactor vessel (10) whose reactor wall (12) is heated by a heater (20), with an inlet (30) for the feed to be separated, an outlet (40) for the residues and a vent (50) for the vapors, as well as with at least one, connected to a drive means (60) drive shaft assembly (80), the at least one wiper device (110) with a rotor (120) with wiper elements (125) for the inner surface (13) of the reactor wall (12), characterized in that the reactor vessel (10) has two adjoining zones (100, 200), namely a first evaporator zone (100) with at least one first wiper device (110) comprising a rotor (120) with wiper elements (125) and a second evaporation ore (200) with at least one second Wi shearing device (210) comprising a rotor (220) with wiper elements (225) for the inner surface (13) of the reactor wall (12), the drive shaft arrangement (80) having a first drive shaft (81) and a second drive shaft (82) and at least a first wiper device (110) on the first drive shaft (81) and the at least one second wiper device (210) on the second drive shaft (82) are fixed, and the drive means (60) is adapted to the first drive shaft (81) in the first evaporating ore (100) at a speed (130) different from that speed (230) of the second drive shaft (82) in the second evaporating ore (200).
    [2]
    2. Thin-film evaporator (1) according to claim 1, characterized in that the rotational speed (130) of the first drive shaft (81) for the at least one first wiper device (210) in the first Ver vaporizer (100) is chosen lower than that speed (230) of the second drive shaft (82) for the at least one second wiper device (210) in the second evaporator (200).
    [3]
    3. thin film evaporator (1) according to claim 1 or 2, characterized in that the first drive shaft (81) and the second drive shaft (82) are arranged concentrically to each other (91, 92).
    [4]
    4. thin film evaporator (1) according to claim 3, characterized in that the second drive shaft (82) passes through the first, hollow drive shaft (81).
    [5]
    5. thin film evaporator (1) according to one of claims 1 to 4, characterized in that a longitudinal axis (11) of the cylindrical reactor vessel (10) extends substantially horizontally.
    [6]
    6. thin film evaporator (1) according to one of claims 1 to 4, characterized in that the longitudinal axis (11) of the cylindrical reactor vessel (10) extends substantially vertically.
    [7]
    7. thin film evaporator (1) according to one of claims 1 to 6, characterized in that the two drive shafts (81, 82) via a planetary gear (70) with a motor (60) are connected.
    [8]
    8. thin film evaporator (1) according to claim 7, characterized in that a transmission ratio of the planetary gear (70) in the range of 1: 2 to 1: 6.
    [9]
    9. Thin film evaporator (1) according to one of claims 1 to 8, characterized in that the drive (60) has at least one speed-controlled electric motor.
    [10]
    10. thin film evaporator (1) according to one of claims 1 to 9, characterized in that each of the two drive shafts (81, 82) is associated with its own drive (60).
    [11]
    11. thin film evaporator (1) according to one of claims 1 to 10, characterized in that the heating device (20) zone-wise heating sections (21,22) on the shell-side reactor wall (12), wherein the heating sections (21, 22) with different heating media (23, 25) are heatable and / or the heating sections (21, 22) to different temperature levels (TI, T2) are adjustable.
    [12]
    12. thin film evaporator (1) according to claim 11, characterized in that with a first heating section (21) the shell-side reactor wall (12) of the first evaporator zone (100) and with a second heating section (22) the shell-side reactor wall (12) of the second evaporator zone (200) are heated separately from each other.
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    同族专利:
    公开号 | 公开日
    AT516504B1|2016-06-15|
    EP3103538B1|2019-01-30|
    EP3103538A1|2016-12-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB923889A|1958-05-07|1963-04-18|Bayer Ag|Construction and arrangement of wipers in thin-film evaporators|
    US4160692A|1976-12-10|1979-07-10|Henry Balfour & Company Limited|Wiped film evaporators|
    DD160524A3|1981-02-20|1983-08-31|Klaus Faber|THERMAL SEPARATION METHOD AND ROTATION DENSITY LUBRICANTS FOR THE ENTMONOMERIZATION OF POLYMER SOLUTIONS|
    DE3531841A1|1984-09-07|1986-03-27|Chemimas Vegyigép Tervezö és Fövállalkozó Vállalat, Budapest|Universal rotor for rotary thin-film appliances|
    WO2012012397A2|2010-07-21|2012-01-26|Aquaback Technologies, Inc.|Distiller|CN110270119A|2019-08-01|2019-09-24|苏州科舵工程技术有限公司|A kind of flat board evaporation equipment|DE1161852B|1956-11-03|1964-01-30|Goeppner Kaiserslautern Eisen|Thin film evaporator|
    DE1745541B2|1967-06-22|1971-02-25|Vickers Zimmer AG. Planung u Bau v Industrieanlagen, 6000 Frankfurt|POLYCONDENSATION PROCESS AND DEVICE|
    US3797550A|1971-08-16|1974-03-19|Monsanto Co|Wiped film devolatilizer construction|CN111924916B|2020-09-16|2020-12-22|山东龙安泰环保科技有限公司|Device for treating high-salinity wastewater by using rotary-film evaporator|
    法律状态:
    2021-02-15| MM01| Lapse because of not paying annual fees|Effective date: 20200612 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50480/2015A|AT516504B1|2015-06-12|2015-06-12|thin film evaporator|ATA50480/2015A| AT516504B1|2015-06-12|2015-06-12|thin film evaporator|
    EP16455001.4A| EP3103538B1|2015-06-12|2016-05-18|Thin-film evaporator|
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