CN210356069U - Chemical rectification heat pump system - Google Patents
Chemical rectification heat pump system Download PDFInfo
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- CN210356069U CN210356069U CN201920481582.8U CN201920481582U CN210356069U CN 210356069 U CN210356069 U CN 210356069U CN 201920481582 U CN201920481582 U CN 201920481582U CN 210356069 U CN210356069 U CN 210356069U
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- heat exchange
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- reboiler
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- 239000000126 substance Substances 0.000 title claims abstract description 27
- 230000006835 compression Effects 0.000 claims abstract description 26
- 238000007906 compression Methods 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 16
- 238000004821 distillation Methods 0.000 claims description 13
- 238000010992 reflux Methods 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 9
- 238000009835 boiling Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to a rectification equipment technical field especially relates to a chemical industry rectification heat pump system. The utility model discloses, including rectifying column and the feed inlet that is linked together with the rectifying column, rectifying column upper segment intercommunication has the evaporimeter, and the hypomere intercommunication has the reboiler, the evaporimeter is linked together through vapor compression device and reboiler, the evaporimeter is linked together with the top of the tower product outlet, the reboiler is linked together with the bottom of the tower product outlet. The utility model discloses an evaporimeter obtains the heat transfer medium vapour of low grade in exchanging the heat in the product to the heat transfer medium in with the top of the tower, and the compression of rethread vapor compression device obtains the highly compressed high-grade heat transfer medium vapour of high temperature, finally gets into in the reboiler by reuse, has realized the recovery of a large amount of heat energy and has recycled, need not to cool off the product on the top of the tower simultaneously, has practiced thrift cooling water and electric energy, and, the utility model discloses an evaporimeter has great heat transfer area, and heat exchange efficiency is high, and the heat transfer is effectual, and the heat transfer difference in temperature is little.
Description
Technical Field
The utility model relates to a rectification equipment technical field especially relates to a chemical industry rectification heat pump system.
Background
The distillation and rectification of domestic chemical and petroleum products mostly adopt vapor of various pressures to heat mixture materials in a rectifying tower, the characteristics of different boiling point temperatures of various material components are utilized to gasify and separate low boiling point materials, the separated gas materials are cooled into liquid state by a cooling system and then are conveyed away, the cooling system consumes a large amount of cooling water and electric energy, and a large amount of heat energy is discharged into the atmosphere, thereby causing great waste of energy. In the prior art, an application technology of directly compressing material vapor at the top of the tower and then sending the compressed material vapor to a reboiler at the bottom of the tower to heat the material at the bottom of the tower is adopted, but the recompression technology of the material has unstable performance and has the risks of material leakage, pollution and deterioration.
For example, chinese utility model patent discloses a mixed phenol rectification system [ application number: 201521067693.2], the utility model comprises a raw material storage tank, an impurity removal reaction kettle, a distillation still, a distillation tower, a condenser and a fraction receiving tank which are connected in sequence and in front and back, the condenser is connected with a vacuum pump, the distillation still is connected with a heat conduction oil furnace, the outlet of the condenser is connected with a three-way pipeline, one end of the three-way pipeline is a product pipe, the other end is a return pipe, the return pipe is communicated with the distillation tower, the outlet of the return pipe is provided with a spray head, the product pipe is connected with a first receiving pipe, a second receiving pipe and a third receiving pipe of the fraction receiving tank, the first receiving pipe, the second receiving pipe and the third receiving pipe are respectively provided with a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve, the three-way joint of the three-way pipeline is provided with a fourth electromagnetic valve, the top of the distillation tower is provided with a temperature sensor and a controller, the, The second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are respectively electrically connected with the controller, and the raw material storage tank and the vacuum pump are connected with an activated carbon adsorber.
The utility model has the advantage of ensuring that the rectification product has higher purity, but still does not solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, provide a chemical industry rectification heat pump system.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the utility model provides a chemical industry rectification heat pump system, includes rectifying column and the feed inlet that is linked together with the rectifying column, rectifying column upper segment intercommunication has the evaporimeter, and the hypomere intercommunication has the reboiler, the evaporimeter is linked together through vapor compression device and reboiler, the evaporimeter is linked together with the top of the tower product export, the reboiler is linked together with the bottom of the tower product export.
In foretell chemical industry rectification heat pump system, still including setting up the first raw materials pre-heater between feed inlet and rectifying column, the reboiler is linked together through first raw materials pre-heater and evaporimeter.
In the chemical rectification heat pump system, one end of the first raw material preheater is communicated with the product outlet at the bottom of the tower, and the other end of the first raw material preheater is communicated with the reboiler.
In the chemical rectification heat pump system, a liquid storage tank and a second raw material preheater are sequentially communicated between the evaporator and the product outlet at the top of the tower, and the liquid storage tank is communicated with the rectification tower through a reflux liquid pump.
In the chemical rectification heat pump system, the reboiler is also communicated with a steam pipe network, and the steam compression device is communicated with the steam pipe network.
In the chemical rectification heat pump system, a feed plate is arranged in the rectification tower, the feed inlet is communicated with the feed plate, a rectification section communicated with the evaporator is arranged right above the feed plate, and a stripping section communicated with the reboiler is arranged right below the feed plate.
In the chemical rectification heat pump system, the vapor compression device comprises a plurality of vapor compressors connected in parallel.
In foretell chemical industry rectification heat pump system, the evaporimeter includes that inside has the shell body of heat transfer cavity, and the heat transfer cavity is linked together with vapor compression device, be equipped with two heat exchange tube sheets of being connected with shell body internal surface fixed in the heat transfer cavity, be equipped with the heat exchange tube between two heat exchange tube sheets, the heat exchange tube sheet is link up at the heat exchange tube both ends to be linked together with rectifying column and tower bottom product outlet respectively, a higher heat exchange tube sheet side has the heat transfer medium pipeline in vertical direction, the heat transfer medium pipeline extends to the heat exchange tube surface to be linked together with the heat transfer cavity.
In the chemical rectification heat pump system, the side wall of the heat exchange tube is fixedly connected with a fin, one end of the fin is fixedly connected with the inner wall of the heat exchange tube, and the other end of the fin extends towards the direction close to the axial lead of the heat exchange tube.
In the chemical rectification heat pump system, the fin is internally provided with a cavity, one end of the cavity penetrates through the side wall of the heat exchange tube, and the other end of the cavity is communicated with the heat exchange cavity through a pipeline.
Compared with the prior art, the utility model has the advantages of:
1. the utility model discloses an in the heat exchange to heat transfer medium of evaporimeter in with the top of the tower product, obtain low-grade heat transfer medium vapour, the high-pressure high-grade heat transfer medium vapour of high temperature is obtained in the compression of rethread vapor compression device, finally gets into in the reboiler by reuse, has realized the recovery of a large amount of heat energy and has recycled, need not to cool off the top of the tower product simultaneously, has practiced thrift cooling water and electric energy.
2. The utility model discloses an evaporimeter has great heat transfer area, and heat exchange efficiency is high, and the heat transfer is effectual, and the heat transfer difference in temperature is little.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the evaporator;
FIG. 3 is a schematic view of a partial structure of an evaporator;
FIG. 4 is a schematic structural view of a heat exchange tube;
in the figure: the device comprises a rectifying tower 1, an evaporator 2, a reboiler 3, a vapor compression device 4, a feed inlet 5, a tower top product outlet 6, a tower bottom product outlet 7, a first raw material preheater 8, a liquid storage tank 9, a second raw material preheater 10, a reflux liquid pump 11, a vapor pipe network 12, a feed plate 13, a rectifying section 14, a stripping section 15, an outer shell 21, a heat exchange cavity 22, a heat exchange pipe plate 23, a heat exchange pipe 24, a heat exchange medium pipeline 25, fins 26, a cavity 27, a pipeline 28 and a vapor compressor 41.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a chemical rectification heat pump system comprises a rectification tower 1 and a feed inlet 5 communicated with the rectification tower 1, wherein the upper section of the rectification tower 1 is communicated with an evaporator 2, the lower section of the rectification tower 1 is communicated with a reboiler 3, the evaporator 2 is communicated with the reboiler 3 through a vapor compression device 4, the evaporator 2 is communicated with a tower top product outlet 6, and the reboiler 3 is communicated with a tower bottom product outlet 7.
The utility model discloses, during the use, the raw materials gets into rectifying column 1 through feed inlet 5 and rectifies, the lower component gasification of boiling point gets into in evaporimeter 2 from the upper segment of rectifying column 1, heat exchange takes place with the heat transfer medium among evaporimeter 2, the heat transfer medium is preferred liquid medium, for example can be water, after the heat transfer, the heat transfer medium absorbs heat and gasifies, become the heat transfer medium steam of low grade, tower top product steam liquefies, export 6 from the tower top product, heat transfer medium steam of low grade is compressed by vapor compression device 4 and is obtained high-temperature high-pressure high-grade heat transfer medium steam, the higher component of boiling point gets into reboiler 3 from the hypomere of rectifying column 1 in the liquid state in the raw materials, high-grade heat transfer medium steam lets in reboiler 3 and takes place the heat exchange, make the liquid part gasification in reboiler 3, in order to guarantee the separation degree between the raw materials component, surplus liquid is discharged from product outlet 7 at the bottom of the tower, so it is practical novel to obtain low-grade heat transfer medium steam in exchanging the heat in the top of the tower product to heat transfer medium through evaporimeter 2, and high-temperature and high-pressure high-grade heat transfer medium steam is obtained in the compression of rethread vapor compression device 4, finally gets into and is recycled in reboiler 3, has realized the recovery of a large amount of heat energy and has recycled, need not to cool off the top of the tower product simultaneously, has practiced thrift cooling water and electric energy.
Specifically, a feed plate 13 is arranged in the rectifying tower 1, the feed inlet 5 is communicated with the feed plate 13, a rectifying section 14 communicated with the evaporator 2 is arranged right above the feed plate 13, a stripping section 15 communicated with the reboiler 3 is arranged right below the feed plate 13, raw materials enter the rectifying tower 1 from the feed plate 13, the content of low-boiling components in the rectifying section 14 is high, and the content of high-boiling components in the stripping section 15 is high.
As shown in fig. 1, the system further comprises a first raw material preheater 8 arranged between the feeding port 5 and the rectifying tower 1, the reboiler 3 is communicated with the evaporator 2 through the first raw material preheater 8, the raw material to be preheated is located in the first raw material preheater 8, and a steam pipeline communicating the reboiler 3 with the evaporator 2 exchanges heat with the raw material through the inside of the first raw material preheater 8, so that the raw material is preheated, the heat energy in the heat exchange medium steam is utilized in two stages, and the recovery utilization rate of the heat energy is improved.
Preferably, one end of the first raw material preheater 8 is communicated with the tower bottom product outlet 7, the other end of the first raw material preheater is communicated with the reboiler 3, and a product discharge pipe communicating the reboiler 3 with the tower bottom product outlet 7 exchanges heat with the raw materials through the inside of the first raw material preheater 8, so that the waste heat in the tower bottom product is fully utilized.
As shown in fig. 1, a liquid storage tank 9 and a second raw material preheater 10 are sequentially communicated between the evaporator 2 and the tower top product outlet 6, a product discharge pipe communicating the liquid storage tank 9 and the tower bottom product outlet 7 performs heat exchange with raw materials through the inside of the second raw material preheater 10, waste heat in the tower top product after liquefaction is fully utilized, the liquid storage tank 9 is communicated with the rectifying tower 1 through a reflux pump 11, so that part of the tower top product after liquefaction flows back to the rectifying tower 1 through the reflux pump 11, and the reflux ratio is ensured to be within a proper range.
As shown in fig. 1, the reboiler 3 is further communicated with a steam pipe network 12, the steam compression device 4 is communicated with the steam pipe network 12, the steam pipe network 12 can provide additional heat exchange medium steam to ensure heat supply when the heat provided by the heat exchange medium steam in the steam compression device 4 is insufficient, and the exhaust pressure of the steam compression device 4 is slightly higher than the pressure required in the reboiler 3, so that the exhaust gas of the steam compression device 4 can be smoothly merged into the steam pipe network 12.
As shown in fig. 1, the vapor compression device 4 includes a plurality of vapor compressors 41 connected in parallel, and the present invention is not limited to the specific type of the vapor compressor 41, and may be a screw-type vapor compressor, a roots-type vapor compressor, a turbine-type vapor compressor, a centrifugal vapor compressor, or the like.
Preferably, a heat exchange medium spray hole is formed in the vapor compressor 41, the heat exchange medium can be sprayed out from the heat exchange medium spray hole to cool, and the sprayed heat exchange medium is gasified into heat exchange medium vapor, so that the exhaust temperature of the vapor compressor 41 can be controlled.
As shown in fig. 1 to 3, the evaporator 2 includes an outer shell 21 having a heat exchange cavity 22 therein, the heat exchange cavity 22 is communicated with the vapor compression device 4, two heat exchange tube plates 23 fixedly connected to the inner surface of the outer shell 21 are provided in the heat exchange cavity 22, a heat exchange tube 24 is provided between the two heat exchange tube plates 23, two ends of the heat exchange tube 24 penetrate through the heat exchange tube plates 23 and are respectively communicated with the rectifying tower 1 and the tower bottom product outlet 7, a heat exchange medium pipeline 25 is provided on the side of one heat exchange tube plate 23 having a higher height in the vertical direction, and the heat exchange medium pipeline 25 extends to the outer surface of the heat exchange tube 24 and is communicated with the heat exchange cavity.
When the device is used, a gaseous tower top product enters the heat exchange tube 24 through the heat exchange tube plate 23, a heat exchange medium flows to the outer surface of the heat exchange tube 24 through the heat exchange medium pipeline 25 to exchange heat with the gaseous tower top product in the heat exchange tube 24, the gaseous tower top product is liquefied and discharged from the tower bottom product outlet 7, the heat exchange medium absorbs heat and is gasified, and the heat exchange medium is discharged to the vapor compression device 4 from the heat exchange cavity 22.
Preferably, the heat exchange tubes 24 are provided with a plurality of heat exchange tubes, the axial leads of the heat exchange tubes 24 are parallel to each other, and the heat exchange tubes 24 are uniformly distributed along the circumferential direction of the axial lead of the heat exchange tube plate 23, so that the heat exchange area can be increased, and the heat exchange is more uniform.
As shown in fig. 2 and fig. 4, the side wall of the heat exchange tube 24 is further fixedly connected with a fin 26, one end of the fin 26 is fixedly connected with the inner wall of the heat exchange tube 24, the other end of the fin extends towards the direction close to the axial lead of the heat exchange tube 24, the fin 26 extends towards the inside of the tube to greatly reduce the setting space required by the heat exchange tube 24, so as to improve the installation density of the heat exchange tube 24, a cavity 27 is arranged in the fin 26, one end of the cavity 27 penetrates through the side wall of the heat exchange tube 24, the other end of the cavity is communicated with the heat exchange cavity 22 through a pipeline 28, when a heat exchange medium flows through the outer surface of the heat exchange tube 24, the heat exchange medium can also flow through the cavity 27 in the fin 26, and the fin 26 is a structure sinking towards the side wall of the heat exchange tube 24, so as to, the heat exchange effect is good, and the heat exchange temperature difference is small.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms rectifying column 1, evaporator 2, reboiler 3, vapor compression device 4, feed inlet 5, overhead product outlet 6, bottom product outlet 7, first feedstock preheater 8, liquid storage tank 9, second feedstock preheater 10, reflux pump 11, vapor pipe network 12, feed plates 13, rectifying section 14, stripping section 15, outer shell 21, heat exchange cavity 22, heat exchange pipe plate 23, heat exchange pipe 24, heat exchange medium pipe 25, fins 26, cavity 27, pipe 28, vapor compressor 41, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
1. The utility model provides a chemical industry rectification heat pump system, includes rectifying column (1) and feed inlet (5) that are linked together with rectifying column (1), its characterized in that: the distillation tower is characterized in that the upper section of the distillation tower (1) is communicated with an evaporator (2), the lower section of the distillation tower is communicated with a reboiler (3), the evaporator (2) is communicated with the reboiler (3) through a vapor compression device (4), the evaporator (2) is communicated with a tower top product outlet (6), and the reboiler (3) is communicated with a tower bottom product outlet (7).
2. The chemical rectification heat pump system of claim 1, wherein: still including setting up first raw materials pre-heater (8) between feed inlet (5) and rectifying column (1), reboiler (3) are linked together through first raw materials pre-heater (8) and evaporimeter (2).
3. The chemical rectification heat pump system of claim 2, wherein: one end of the first raw material preheater (8) is communicated with the tower bottom product outlet (7), and the other end is communicated with the reboiler (3).
4. The chemical rectification heat pump system of claim 1, wherein: a liquid storage tank (9) and a second raw material preheater (10) are sequentially communicated between the evaporator (2) and the tower top product outlet (6), and the liquid storage tank (9) is communicated with the rectifying tower (1) through a reflux pump (11).
5. The chemical rectification heat pump system of claim 1, wherein: the reboiler (3) is also communicated with a steam pipe network (12), and the steam compression device (4) is communicated with the steam pipe network (12).
6. The chemical rectification heat pump system of claim 1, wherein: the distillation tower is characterized in that a feeding plate (13) is arranged in the distillation tower (1), the feeding port (5) is communicated with the feeding plate (13), a distillation section (14) communicated with the evaporator (2) is arranged right above the feeding plate (13), and a stripping section (15) communicated with the reboiler (3) is arranged right below the distillation tower.
7. The chemical rectification heat pump system of claim 1, wherein: the vapor compression device (4) comprises a plurality of vapor compressors (41) which are connected in parallel.
8. The chemical rectification heat pump system of claim 1, wherein: evaporator (2) is including inside shell body (21) that has heat transfer cavity (22), and heat transfer cavity (22) is linked together with vapor compression device (4), be equipped with two heat exchange tube board (23) with shell body (21) internal surface fixed connection in heat transfer cavity (22), be equipped with heat exchange tube (24) between two heat exchange tube board (23), heat exchange tube (24) both ends link up heat exchange tube board (23) to be linked together with rectifying column (1) and tower bottom product outlet (7) respectively, a higher heat exchange tube board (23) side has heat transfer medium pipeline (25) in vertical direction, heat transfer medium pipeline (25) extend to heat exchange tube (24) surface to be linked together with heat transfer cavity (22).
9. The chemical rectification heat pump system of claim 8, wherein: the side wall of the heat exchange tube (24) is also fixedly connected with a fin (26), one end of the fin (26) is fixedly connected with the inner wall of the heat exchange tube (24), and the other end of the fin extends towards the direction close to the axial lead of the heat exchange tube (24).
10. The chemical rectification heat pump system of claim 9, wherein: cavities (27) are formed in the fins (26), one ends of the cavities (27) penetrate through the side wall of the heat exchange tube (24), and the other ends of the cavities (27) are communicated with the heat exchange cavity (22) through pipelines (28).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019204655388 | 2019-04-08 | ||
| CN201920465538 | 2019-04-08 |
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| Publication Number | Publication Date |
|---|---|
| CN210356069U true CN210356069U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920481582.8U Active CN210356069U (en) | 2019-04-08 | 2019-04-10 | Chemical rectification heat pump system |
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| CN (1) | CN210356069U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370629A (en) * | 2021-12-24 | 2022-04-19 | 江苏三吉利化工股份有限公司 | Device and method for recovering waste heat of benzenediol product rectifying tower |
-
2019
- 2019-04-10 CN CN201920481582.8U patent/CN210356069U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370629A (en) * | 2021-12-24 | 2022-04-19 | 江苏三吉利化工股份有限公司 | Device and method for recovering waste heat of benzenediol product rectifying tower |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 502, Building 1, No. 51 Jiusheng Road, Shangcheng District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Zhejiang Jiepu Zhihui Energy Technology Co.,Ltd. Patentee after: Ye Jiuqiang Address before: 310016 room 285, floor 2, building 4, No. 9, Jiuhuan Road, Jianggan District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG JIEPU ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Patentee before: Ye Jiuqiang |
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| CP03 | Change of name, title or address |