CN211025203U - Falling film crystallizer capable of realizing reversible flow heat transfer - Google Patents
Falling film crystallizer capable of realizing reversible flow heat transfer Download PDFInfo
- Publication number
- CN211025203U CN211025203U CN201921834532.XU CN201921834532U CN211025203U CN 211025203 U CN211025203 U CN 211025203U CN 201921834532 U CN201921834532 U CN 201921834532U CN 211025203 U CN211025203 U CN 211025203U
- Authority
- CN
- China
- Prior art keywords
- crystallization
- pipe
- cold
- crystallizer
- falling film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model belongs to the technical field of chemical industry equipment, specifically disclose falling liquid film crystallizer of reversible flow heat, including barrel, cold and hot medium distributor, crystallization pipe fixed plate, material distributor, crystallization pipe backup pad, crystallization pipe, cold and hot medium import, cold and hot medium export, material import and material export, the crystallization pipe box is established on cold and hot medium pipe, and the crystallization pipe upper end is equipped with the opening, and the lower extreme is for sealing the form, and the upper end and the lower extreme of cold and hot medium pipe all are equipped with the opening, and cold and hot medium import and cold and hot medium pipe are linked together, and cold and hot medium export is linked together with the crystallization pipe. In the crystallizer, the material flows from top to bottom along the outer side of the crystallization tube, the cold and hot medium flows from bottom to top on the inner side of the crystallization tube, and the material and the cold and hot medium form countercurrent heat transfer, so that the heat exchange efficiency and the crystallization efficiency are effectively improved.
Description
Technical Field
The utility model relates to a chemical industry equipment field especially relates to a falling film crystallizer of reversible flow heat.
Background
With the continuous development of chemical industry, pharmaceutical industry and materials science, the purity of chemical raw materials is higher and higher. The raw materials usually exist in the form of isomers, enantiomers or homologue mixtures, and because the physical and chemical properties are very close, new requirements are provided for the separation of the isomers and the enantiomers. In addition, a part of chemical raw materials are heat-sensitive substances with high boiling points and easy reaction, and a series of side reactions are easy to occur at high temperature, so that the conventional rectification or vacuum rectification separation operation is limited.
The melt crystallization is a purification technology for realizing separation by solid-liquid two-phase balance based on the difference of melting points of different substances, has the advantages of low operation temperature, less side reaction, low energy consumption and the like, and is a new separation technology developed recently. The melt crystallization is classified into three types, suspension crystallization, falling film crystallization and layer crystallization, depending on the operation method. The falling film crystallization has been widely used due to the advantages of large treatment capacity, convenient operation, simple structure of separation equipment, convenient maintenance and the like, and is particularly successfully applied in the fields of ice crystal acrylic acid, naphthalene, lactide, electronic grade phosphoric acid and the like.
At present, the falling film crystallization is most widely applied in a double falling film crystallization system of Sulsho company of Switzerland, and is mainly characterized in that a material to be purified flows from top to bottom in an inner pipe of a falling film device under the action of a film distributor. And the temperature-controlled cooling and heating medium flows from top to bottom in a film form outside the crystallization tubes of the falling film device. Patent CN201611052225.7 also uses a system of double falling films, with the difference that the cooling and heating medium flows inside the crystallization tubes, and the material to be purified is cooled and crystallized outside the crystallization tubes. The conventional double-falling-film crystallization system has the main problems that the inner falling film and the outer falling film can only flow from top to bottom, the heat exchange mode of materials and a heating and cooling medium can only be parallel flow heat transfer, and the heat transfer efficiency is low. The temperature of the refrigerant at the upper end of the crystallization pipe is low, the purity of the material is slightly higher, the crystallization speed is high, and the purity of the material at the lower end of the crystallization pipe is low, the temperature of the refrigerant is high, so that the crystallization of the material is not facilitated, and the crystallization process is not facilitated. Secondly, the cooling and heating medium can only flow in a falling film mode, and the flow rate of the cooling and heating medium is limited to a certain extent. On the other hand, the inner tube serves as a crystallization wall of the material, and the capacity is limited due to the limited crystallization space.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention provides a falling film crystallizer capable of conducting heat in a counter-current manner, which is used for solving the problems of low heat transfer efficiency, low crystallization efficiency, etc. of the conventional falling film crystallizer, in which the cooling and heating medium and the material both flow in a form of falling film in a parallel flow manner.
In order to achieve the above and other related objects, the present invention provides a falling film crystallizer with reversible flow heat, comprising a cylinder, wherein a cooling and heating medium distributor, a crystallization tube fixing plate, a material distributor and a crystallization tube supporting plate are sequentially arranged in the cylinder from top to bottom, a plurality of vertically arranged crystallization tubes and cooling and heating medium tubes are arranged in the cylinder, the crystallization tubes are sleeved on the cooling and heating medium tubes, the upper ends of the crystallization tubes are provided with openings, the lower ends of the crystallization tubes are closed, and the upper ends and the lower ends of the cooling and heating medium tubes are provided with openings; the upper ends of the crystallization tube and the cold and hot medium tube are fixedly arranged on a crystallization tube fixing plate, the lower end of the crystallization tube sequentially penetrates through a material distributor and a crystallization tube supporting plate, the material distributor is positioned at the upper end of the crystallization tube, and the crystallization tube supporting plate is positioned at the lower end of the crystallization tube; the top of the cylinder is provided with a cold and hot medium inlet which is communicated with a cold and hot medium pipe; a cold and hot medium outlet and a material inlet are formed in the upper end of the cylinder wall of the cylinder body, the position of the cold and hot medium outlet is higher than the top end of the crystallization pipe, the cold and hot medium outlet is communicated with the crystallization pipe, and the position of the material inlet is between the crystallization pipe fixing plate and the material distributor; and a material outlet communicated with the material inlet is formed in the bottom of the cylinder body.
The working principle of the basic scheme is as follows: the material enters the material distributor from the material inlet, and the material distributor uniformly distributes the material on the outer wall of the crystallization tube, so that the material uniformly flows from top to bottom under the action of gravity on the outer wall of the crystallization tube in a falling film mode; and the cooling and heating medium enters the cooling and heating medium distributor from the cooling and heating medium inlet, enters the cooling and heating medium pipe, flows into the crystallization pipe from the lower end of the cooling and heating medium pipe, then flows upwards from the bottom of the inner side of the crystallization pipe, and finally flows out from the cooling and heating medium outlet at the upper end of the cylinder, so that the material and the cooling and heating medium form countercurrent heat transfer, and the heat transfer efficiency and the crystallization efficiency can be effectively improved.
Furthermore, a plurality of through holes which are in one-to-one correspondence with the crystallization tubes are arranged on the crystallization tube supporting plate, and the lower ends of the crystallization tubes penetrate through the through holes. The crystallization tube supporting plate mainly plays a supporting and limiting role for the crystallization tube, the crystallization tube is prevented from moving radially due to shaking of the crystallization tube in the processes of transportation, hoisting, use and the like, and meanwhile, the lower end of the crystallization tube is a free end and is not fixed on the crystallization tube supporting plate, so that the crystallization tube can stretch freely, and the influence of stress caused by expansion with heat and contraction with cold in the crystallization process is eliminated.
Further, the through hole on the crystallization tube supporting plate is larger than the outer diameter of the crystallization tube. The crystallization tube is allowed to move radially by a small amount, and simultaneously, the materials can smoothly pass through the crystallization tube supporting plate without influencing the flow of the materials.
Further, the material distributor is an outer falling film distributor, and the outer falling film distributor is provided with a plurality of overflow weirs and exhaust ports. The arrangement of the overflow weir and the exhaust port is convenient for the material with over-high flow velocity to flow out of the outer falling film distributor, and simultaneously, the pressure in the falling film crystallizer is balanced, so that the falling film crystallizer is ensured to be in a stable operation state.
Further, the crystallizer still includes the circulating pump, the circulating pump is equipped with material inlet and material discharge port, the material inlet of circulating pump is connected with the material outlet of crystallizer, the circulating pump is equipped with the material discharge port and is connected with the material import of crystallizer. The arrangement of the circulating pump can lead the material to continuously flow on the outer wall of the crystallization pipe until the crystallization process is finished.
Further, the crystallizer also comprises a temperature control mechanism, the temperature control mechanism is provided with a cooling medium inlet and a cooling medium outlet, the cooling medium outlet of the temperature control mechanism is connected with the cooling medium inlet of the crystallizer, and the cooling medium inlet of the temperature control mechanism is connected with the cooling medium outlet of the crystallizer. The accurate temperature control and the circular flow of the cooling and heating medium in the crystallizer are realized through the arrangement of the temperature control mechanism.
Furthermore, a plurality of fixing elements are arranged between the cooling and heating medium pipe and the crystallization pipe so as to avoid the vibration and the shock of the cooling and heating medium pipe.
Further, the fixed component includes that a plurality of level sets up and along the backup pad of heating medium pipe circumference equipartition, and the one end fixed connection of backup pad is on the outer wall of heating medium pipe, and the other end of backup pad contacts with the inner wall of crystallization pipe. The supporting plate adopts single-side welding, so that the crystallization tube can have a certain moving space while vibration and vibration of the cooling and heating medium tube are avoided.
Furthermore, the quantity of fixed component is three, and three fixed component interval evenly distributed sets up along vertical direction in proper order.
Further, crystallization pipe fixed plate and barrel inner wall sealing connection, crystallization pipe fixed plate are bilayer structure, and the upper end fixed connection of cold and hot medium pipe is on the upper strata of crystallization pipe fixed plate, and the upper end fixed connection of crystallization pipe is on the lower floor of crystallization pipe fixed plate. The space in the middle of two fixed plates is the passageway of cold and hot medium circulation, and the enclosed construction of bilayer fixed plate can avoid cold and hot medium and material mixture and pollute the material, the flow of the cold and hot medium of being convenient for simultaneously.
As mentioned above, the falling film crystallizer of the present invention has the following advantages:
1. in the falling film crystallizer, the material to be separated flows in a film shape from top to bottom on the outer side of the crystallization tube in a falling film mode, and the cold and hot medium flows from bottom to top on the inner side of the crystallization tube so as to form countercurrent heat transfer, so that the concentration of the material is gradually reduced and the temperature is increased along with the upward and downward flow processes of the material along with the crystallization, and the temperature of the crystallization tube is gradually increased along with the upward and downward flow processes of the material, so that a certain temperature gradient can be always kept between the material and the crystallization tube, and the material can still be further crystallized from the lower part of the crystallization tube. Meanwhile, the invention can realize the controllable crystallization of the material on the outer wall of the crystallization tube by accurately controlling the temperature and the flow rate of the cold and heat medium, thereby effectively improving the heat transfer efficiency and the crystallization efficiency.
2. When the crystallizer is used for countercurrent heat transfer crystallization, crystallization is carried out on the outer wall of the crystallization tube, the surface of the crystallization tube can be utilized to the maximum extent, and the crystallizer has higher equipment use efficiency and productivity compared with crystallization in the crystallization tube with the same heat exchange area.
3. Besides realizing the countercurrent heat transfer crystallization, the device can also realize the cocurrent heat transfer crystallization, and when in use, the optimal heat transfer mode and the optimal operation parameters can be selected according to the properties of the materials to be separated.
Drawings
Fig. 1 is a longitudinal sectional view of a falling film crystallizer in an embodiment of the present invention;
FIG. 2 is a top view of the crystallizer support plate of FIG. 1;
fig. 3 is a transverse cross-sectional view of the crystallization tube of fig. 1.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated. The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Description of reference numerals:
the device comprises a cylinder 1, a cold and hot medium inlet 2, a cold and hot medium outlet 4, a cold and hot medium distributor 3, a crystallization tube fixing plate 5, a material distributor 6, a crystallization tube supporting plate 7, a through hole 71, a crystallization tube 8, a cold and hot medium tube 9, a material outlet 10, a material inlet 11 and a supporting plate 12.
As shown in fig. 1, a falling-film crystallizer of reversible flow heat comprises a cylinder 1, wherein a cooling and heating medium distributor 3, a crystallization tube fixing plate 5, a material distributor 6 and a crystallization tube supporting plate 7 are sequentially arranged in the cylinder 1 from top to bottom; a plurality of vertically arranged crystallization tubes 8 and a cooling and heating medium tube 9 are arranged in the cylinder 1, the crystallization tubes 8 are sleeved on the cooling and heating medium tube 9, the upper ends of the crystallization tubes 8 are provided with openings, the lower ends of the crystallization tubes are closed, and the upper ends and the lower ends of the cooling and heating medium tubes 9 are provided with openings; the upper ends of a crystallization tube 8 and a cold and heat medium tube 9 are fixedly arranged on a crystallization tube fixing plate 5, the lower end of the crystallization tube 8 sequentially passes through a material distributor 6 and a crystallization tube supporting plate 7, the material distributor 6 is positioned at the upper end of the crystallization tube 8, and the crystallization tube supporting plate 7 is positioned at the lower end of the crystallization tube 8; the top of the cylinder 1 is provided with a cooling and heating medium inlet 2, and the cooling and heating medium inlet 2 is communicated with a cooling and heating medium pipe 9; a cooling and heating medium outlet 4 and a material inlet 11 are arranged at the upper end of the cylinder wall of the cylinder body 1, the position of the cooling and heating medium outlet 4 is higher than the top end of the crystallization pipe 8, the cooling and heating medium outlet 4 is communicated with the crystallization pipe 8, and the position of the material inlet 11 is between the crystallization pipe fixing plate 5 and the material distributor 6; the bottom of the cylinder body 1 is provided with a material outlet 10 communicated with a material inlet 11.
The barrel 1 provides a suitable environment for crystallization of the material, including inert gas flow, suitable crystallization pressure, and the like, and also plays a role in supporting the whole equipment.
The cold and hot medium inlet 2 is a channel for the cold and hot medium to enter the crystallizer cylinder 1, and is used for introducing a refrigerant in a crystallization cooling stage, and the refrigerant and the heat medium are the same medium in a sweating and melting stage and are used for providing a proper crystallization and sweating temperature for the crystallizer. And the cooling and heating medium outlet 4 is an outlet of the cooling medium and the heating medium after crystallization heat exchange and returns to the cooling and heating medium system for circulation of the next period.
The material inlet 11 is an inlet for the material to enter the crystallizer; and the material outlet 10 is a passage for the material to flow out of the barrel body 1 and comprises the outflow of mother liquor, perspiration and finished products.
The cold and hot medium distributor 3 is positioned below the cold and hot medium inlet 2, after the cold and hot medium enters the cylinder 1, the cold and hot medium distributor 3 ensures that the cold and hot medium is uniformly distributed between each crystallization pipe 8 and the cold and hot medium pipe 9, the structure form is a horizontal round stainless steel plate with holes, and the edge of the horizontal round stainless steel plate is welded with a circle of vertical stainless steel plate with holes.
The material distributor 6 is an outer falling film distributor which is provided with a plurality of overflow weirs and exhaust ports. The arrangement of the overflow weir and the exhaust port is convenient for the material with over-high flow velocity to flow out of the outer falling film distributor, and simultaneously, the pressure in the falling film crystallizer is balanced, so that the falling film crystallizer is ensured to be in a stable operation state. The structure of the material distributor 6 is similar to that of the cold and heat medium distributor 3.
The crystallization tube support plate 7 is of a porous structure, and as shown in fig. 2, a plurality of through holes 71 are arranged on the crystallization tube support plate 7, the positions of the through holes 71 correspond to the crystallization tubes 8 one by one, the lower ends of the crystallization tubes 8 penetrate through the through holes 71, and the through holes 71 are larger than the outer diameters of the crystallization tubes 8; the crystallization tube support plate 7 is also provided with a plurality of small holes for materials to pass through, and the small holes are uniformly distributed around the through holes 71. The crystallization tube supporting plate 7 mainly plays a horizontal limiting role for the crystallization tube 8, so that the crystallization tube 8 is prevented from vibrating or shaking due to shaking of the crystallization tube in the processes of transportation, hoisting, use and the like, meanwhile, the lower end of the crystallization tube 8 is a free end and is not fixed on the crystallization tube supporting plate 7, the crystallization tube 8 is convenient to freely stretch and retract, and therefore the influence of stress caused by expansion with heat and contraction with cold in the crystallization process is eliminated. The through holes 71 on the crystallization tube support plate 7 are larger than the outer diameter of the crystallization tube 8, so that the crystallization tube 8 can move radially by a small amount, and simultaneously, the materials can smoothly pass through the crystallization tube support plate 7 without influencing the flow of the materials.
In detail, three fixing elements are arranged between the cold and hot medium pipe 9 and the crystallization pipe 8, and the three fixing elements are sequentially and uniformly distributed at intervals along the vertical direction. Referring to fig. 3, the fixing member is composed of three horizontally disposed supporting plates 12, the supporting plates 12 are stainless steel plates and are arranged at intervals of 120 ° along the circumferential direction of the cooling medium pipe, the supporting plates 12 are welded on one side, that is, one end of the supporting plate 12 is fixedly connected to the outer wall of the cooling medium pipe 9, and the other end of the supporting plate 13 is in contact with the inner wall of the crystallization pipe 8. The fixing member can further prevent the refrigerant and heating medium pipe 9 from being shaken and shaken.
In detail, the crystallization tube fixing plate 5 is a double-layer structure, the upper end of the cold and hot medium tube 9 is welded on the upper layer of the crystallization tube fixing plate 5, the upper end of the crystallization tube 8 is welded on the lower layer of the crystallization tube fixing plate 5, the crystallization tube fixing plate 5 is connected with the inner wall of the cylinder 1 in a sealing manner, and the space between the two fixing plates is a channel for the circulation of the cold and hot medium.
In addition, the crystallizer also comprises a circulating pump and a temperature control mechanism (not shown in the figure). The circulating pump is provided with a material inlet and a material outlet, the material inlet of the circulating pump is connected with the material outlet 10 of the crystallizer, and the circulating pump is provided with a material outlet connected with the material inlet 11 of the crystallizer. The arrangement of the circulating pump can lead the material to continuously flow on the outer wall of the crystallization pipe 8 until the crystallization process is finished.
The temperature control mechanism is provided with a cooling medium inlet and a cooling medium outlet, the cooling medium outlet of the temperature control mechanism is connected with the cooling medium inlet 2 of the crystallizer, and the cooling medium inlet of the temperature control mechanism is connected with the cooling medium outlet 4 of the crystallizer. The accurate temperature control and the circular flow of the cooling and heating medium in the crystallizer are realized through the arrangement of the temperature control mechanism.
The falling film crystallizer is used in the following specific process:
during crystallization, materials to be purified enter the material distributor 6 through the material inlet 11, and the materials are uniformly distributed on the outer wall of the crystallization pipe 8 by the material distributor 6; and the cooling and heating medium enters the cooling and heating medium distributor 3 from the cooling and heating medium inlet 2, enters the cooling and heating medium pipe 9, flows into the crystallization pipe 8 from the lower end of the cooling and heating medium pipe 9, then flows upwards from the bottom inside the crystallization pipe 8, and finally flows out from the cooling and heating medium outlet 4 at the upper end of the cylinder 1, so that the material and the cooling and heating medium form countercurrent heat transfer, and the heat exchange efficiency and the crystallization efficiency are effectively improved.
Specifically, in the cooling crystallization stage of the conventional double falling film crystallization, the inside of the crystallization tube 8 is a refrigerant, and the temperature gradually rises and the concentration of the material gradually decreases in the process that the material flows along the outer wall of the crystallization tube 8 from top to bottom, so that the lower part of the crystallization tube 8 is not easy to crystallize.
The crystallizer can also realize parallel-flow heat transfer crystallization, when in specific use, the cold and heat medium inlet 1 is used as an outlet of a cold and heat medium, and the cold and heat medium outlet 4 is used as an inlet of the cold and heat medium, so that the parallel-flow heat transfer crystallization can be realized, the cold and heat medium flows from top to bottom along the inner wall of the crystallization tube 8, and the material flows from top to bottom outside the crystallization tube 8, thereby forming parallel-flow heat transfer.
The parallel flow heat transfer can be realized by simultaneously connecting a cold and heat medium inlet 1 with a cold and heat medium inlet and a heat and heat medium outlet, connecting a cold and heat medium outlet 4 with a cold and heat medium inlet and a heat and heat medium outlet, controlling by using a self-control valve, and switching the parallel flow and counter flow operation modes at any time in the crystallization process, wherein the counter flow heat transfer in the crystallization process is favorable, and the sweating process and the melting process are favorable, and the parallel flow heat transfer is more favorable for the process.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The falling film crystallizer capable of realizing reversible flow heat transfer is characterized by comprising a cylinder body, wherein a cooling and heating medium distributor, a crystallization pipe fixing plate, a material distributor and a crystallization pipe supporting plate are sequentially arranged in the cylinder body from top to bottom; the upper ends of the crystallization tube and the cold and hot medium tube are fixedly arranged on a crystallization tube fixing plate, the lower end of the crystallization tube sequentially penetrates through a material distributor and a crystallization tube supporting plate, the material distributor is positioned at the upper end of the crystallization tube, and the crystallization tube supporting plate is positioned at the lower end of the crystallization tube; the top of the cylinder is provided with a cold and hot medium inlet which is communicated with a cold and hot medium pipe; a cold and hot medium outlet and a material inlet are formed in the upper end of the cylinder wall of the cylinder body, the position of the cold and hot medium outlet is higher than the top end of the crystallization pipe, the cold and hot medium outlet is communicated with the crystallization pipe, and the position of the material inlet is between the crystallization pipe fixing plate and the material distributor; and a material outlet communicated with the material inlet is formed in the bottom of the cylinder body.
2. The falling film crystallizer of claim 1, characterized in that: the crystallization tube supporting plate is provided with a plurality of through holes which are in one-to-one correspondence with the crystallization tubes, and the lower ends of the crystallization tubes penetrate through the through holes.
3. The falling film crystallizer of claim 2, characterized in that: the through hole on the crystallization tube supporting plate is larger than the outer diameter of the crystallization tube.
4. The falling film crystallizer of claim 1, characterized in that: the material distributor is an outer falling film distributor which is provided with a plurality of overflow weirs and exhaust ports.
5. The falling film crystallizer of claim 1, characterized in that: the crystallizer also comprises a circulating pump, the circulating pump is provided with a material inlet and a material outlet, the material inlet of the circulating pump is connected with the material outlet of the crystallizer, and the circulating pump is provided with a material outlet connected with the material inlet of the crystallizer.
6. The falling film crystallizer of claim 1, characterized in that: the crystallizer also comprises a temperature control mechanism, the temperature control mechanism is provided with a cooling medium inlet and a cooling medium outlet, the cooling medium outlet of the temperature control mechanism is connected with the cooling medium inlet of the crystallizer, and the cooling medium inlet of the temperature control mechanism is connected with the cooling medium outlet of the crystallizer.
7. The falling film crystallizer of claim 1, characterized in that: and a plurality of fixing elements are arranged between the cooling and heating medium pipe and the crystallization pipe.
8. The falling film crystallizer of claim 7, characterized in that: the fixed component comprises a plurality of supporting plates which are horizontally arranged and are uniformly distributed along the circumferential direction of the cooling and heating medium pipe, one end of each supporting plate is fixedly connected to the outer wall of the cooling and heating medium pipe, and the other end of each supporting plate is in contact with the inner wall of the crystallization pipe.
9. The falling film crystallizer of claim 7, characterized in that: the quantity of fixed component is three, and three fixed component interval evenly distributed sets up along vertical direction in proper order.
10. The counter-current heat-transferring falling film crystallizer of claim 1, wherein: crystallization pipe fixed plate and barrel inner wall sealing connection, crystallization pipe fixed plate are bilayer structure, and the upper end fixed connection of cold and hot medium pipe is on the upper strata of crystallization pipe fixed plate, and the upper end fixed connection of crystallization pipe is on the lower floor of crystallization pipe fixed plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921834532.XU CN211025203U (en) | 2019-10-29 | 2019-10-29 | Falling film crystallizer capable of realizing reversible flow heat transfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921834532.XU CN211025203U (en) | 2019-10-29 | 2019-10-29 | Falling film crystallizer capable of realizing reversible flow heat transfer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211025203U true CN211025203U (en) | 2020-07-17 |
Family
ID=71560807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921834532.XU Active CN211025203U (en) | 2019-10-29 | 2019-10-29 | Falling film crystallizer capable of realizing reversible flow heat transfer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211025203U (en) |
-
2019
- 2019-10-29 CN CN201921834532.XU patent/CN211025203U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202237354U (en) | Melting crystallizer | |
| CN102155854B (en) | Vertical falling-film heat exchanger outside pipe | |
| CN112691402A (en) | Vertical melt crystallizer | |
| CN103772137A (en) | Purification method of p-dichlorobenzene | |
| CN211025203U (en) | Falling film crystallizer capable of realizing reversible flow heat transfer | |
| CN101077140B (en) | Crystal diabetin manufacturing technique on vertical type continuous crystallizer | |
| CN1027963C (en) | Parametric pump fractional crystallization method and PFC crystallizer | |
| WO2021115363A1 (en) | Gas phase distribution control apparatus and dividing wall column | |
| CN112473168A (en) | Gradient cooling falling film dynamic crystallizer and falling film crystallization separation method of mixture | |
| CN202715268U (en) | Crystallizer | |
| CN102512844A (en) | Device for controlling zinc sulfate heptahydrate cooling crystallization shape, and cooling method thereof | |
| CN108905265A (en) | Sodium vanadate Continuous Cooling Crystallization equipment and its production method | |
| CN203196371U (en) | Continuous potassium dihydrogen phosphate crystallization device | |
| CN104740891B (en) | Air cooling crystallizer for inner fin tubes | |
| CN209270883U (en) | A kind of sodium vanadate Continuous Cooling Crystallization equipment | |
| CN214286770U (en) | Gradient cooling falling film dynamic crystallizer | |
| CN207445652U (en) | The crystallizer of crystallizer structure and the application structure | |
| CN113877235B (en) | Static crystallizer and static crystallization method | |
| CN203021552U (en) | Cooling fermentation tank with inner coils | |
| CN106621444B (en) | A kind of novel double down film melting crystallizer and the technique for carrying out substance separation | |
| CN102580345B (en) | Crystallization tower for purifying phosphoric acid | |
| CN212881133U (en) | Novel diphenylsulfone production is with fractional crystallization ware | |
| CN210583740U (en) | Crystallizer for carbazole purification | |
| CN107617230A (en) | Crystallize tubular construction and the crystallizer using the crystallization tubular construction | |
| CN218106790U (en) | Plate-type falling film purification system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |