CN218916049U - Divinylbenzene cooling system - Google Patents
Divinylbenzene cooling system Download PDFInfo
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- CN218916049U CN218916049U CN202222183294.9U CN202222183294U CN218916049U CN 218916049 U CN218916049 U CN 218916049U CN 202222183294 U CN202222183294 U CN 202222183294U CN 218916049 U CN218916049 U CN 218916049U
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- pipeline
- heat exchanger
- divinylbenzene
- water
- outlet
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- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 title claims abstract description 111
- 238000001816 cooling Methods 0.000 title claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 41
- 238000006356 dehydrogenation reaction Methods 0.000 claims abstract description 37
- 238000010791 quenching Methods 0.000 claims abstract description 31
- 230000000171 quenching effect Effects 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000000926 separation method Methods 0.000 claims abstract description 21
- 239000002351 wastewater Substances 0.000 claims abstract description 20
- 239000002912 waste gas Substances 0.000 claims abstract description 13
- 238000010992 reflux Methods 0.000 claims abstract description 10
- 238000011084 recovery Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 7
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 239000006200 vaporizer Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The divinylbenzene cooling system comprises a divinylbenzene pipeline, a primary heat exchanger, a quenching heat exchanger, a condenser, an oil-water separation tank, a process waste water pipeline, a dehydrogenation tail gas buffer tank, a dehydrogenation tail gas pipeline, a reflux pipeline, a vacuum pump, a process waste gas pipeline, a condensed water tank, a condensed water pipeline and a hot steam pipeline, wherein the divinylbenzene pipeline is connected with a shell side inlet of the primary heat exchanger, a shell side outlet of the primary heat exchanger is connected with a shell side inlet of the quenching heat exchanger, a shell side outlet of the quenching heat exchanger is connected with a material inlet of the condenser, a material outlet of the condenser is connected with a material inlet of the oil-water separation tank, the oil-water separation tank is provided with a gas outlet and a water outlet, the gas outlet is connected with the dehydrogenation tail gas buffer tank through the dehydrogenation tail gas pipeline, the water outlet is connected with the process waste water pipeline, the reflux pipeline is connected with the dehydrogenation tail gas buffer tank and the oil-water separation tank, the dehydrogenation tail gas buffer tank is connected with the vacuum pump, and the vacuum pump is connected with the vertical cylinder furnace through the process waste gas pipeline.
Description
Technical Field
The utility model relates to the technical field of organic chemical industry, in particular to a divinylbenzene cooling system.
Background
Divinylbenzene is an important cross-linking agent and is widely applied to the fields of ion exchange resins, ion exchange membranes, ABS resins, polystyrene resins, unsaturated polyester resins, synthetic rubber and the like, but in the chemical reaction process, when the environmental temperature is too high, the chemical thermal state is unstable, and the divinylbenzene can undergo polymerization reaction, in other words: the target product divinylbenzene stays in the high temperature area for too long, the polymerization reaction is more intense, and the content of the target product divinylbenzene is reduced.
For example, chinese application of publication No. CN202121904383.7 discloses a device for preparing dehydrogenated divinylbenzene, which comprises a preprocessor, a refining tank, a vaporizer, a dehydrogenation reaction tower, a superheater, a heat exchanger, a condenser, and an oil-water separator, wherein a circulating cooler is disposed at the top of the preprocessor, a reboiler is disposed at the bottom of the preprocessor, an outlet of the circulating cooler is connected with the refining tank, an outlet of the refining tank is connected with a shell side inlet of the vaporizer, a shell side outlet of the vaporizer is connected with a shell side inlet of the superheater, a shell side outlet of the superheater is connected with a gas phase inlet of the dehydrogenation reactor, a superheated steam inlet is further disposed at the bottom of the dehydrogenation reactor, a top gas phase outlet of the dehydrogenation reactor is connected with a tube side inlet of the superheater, a tube side outlet of the superheater is connected with a tube side inlet of the heat exchanger, and a tube side outlet of the main condenser is connected with the oil-water separator.
However, in the above-mentioned dehydrogenation divinylbenzene preparation device, a cooling medium is additionally added for cooling the raw materials, which causes waste of resources.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a divinylbenzene cooling system.
The divinylbenzene cooling system comprises a divinylbenzene pipeline, a primary heat exchanger, a quenching heat exchanger, a condenser, an oil-water separation tank, a process waste water pipeline, a dehydrogenation tail gas buffer tank, a dehydrogenation tail gas pipeline, a reflux pipeline, a vacuum pump, a process waste gas pipeline, a condensate water tank, a condensate water pipeline and a vertical cylinder furnace, wherein the divinylbenzene pipeline is connected with a shell side inlet of the primary heat exchanger, a shell side outlet of the primary heat exchanger is connected with a shell side inlet of the quenching heat exchanger, a shell side outlet of the quenching heat exchanger is connected with a material inlet of the condenser, a material outlet of the condenser is connected with a material inlet of the oil-water separation tank, the oil-water separation tank is provided with a gas outlet, the gas outlet is connected with an inlet of the dehydrogenation tail gas pipeline, an outlet of the dehydrogenation tail gas pipeline is connected with an inlet of the dehydrogenation tail gas buffer tank, the reflux pipeline is connected between the dehydrogenation tail gas buffer tank and the oil-water separation tank, so that substances at the bottom of the dehydrogenation tail gas tank reflux the oil-water buffer tank, the dehydrogenation tail gas buffer tank is connected with the vacuum pump, one end of the process waste gas pipeline is connected with the vacuum pump, and the other end of the process waste gas pipeline is connected with the vertical cylinder furnace.
Preferably, the divinylbenzene cooling system further comprises a process waste water pipeline, and the process waste water pipeline is connected with a condensate water inlet of the condensate water tank.
Preferably, the divinylbenzene cooling system further comprises a hot steam pipeline, and the hot steam pipeline is connected with a tube side outlet of the quenching heat exchanger.
Preferably, the divinylbenzene cooling system further comprises a process waste gas pipeline, and the process waste gas pipeline is connected with an outlet of the vacuum pump.
Preferably, the divinylbenzene cooling system further comprises an exhaust gas recovery device, the exhaust gas recovery device comprises a vertical cylindrical furnace and a process exhaust gas pipeline, and the vertical cylindrical furnace in the exhaust gas recovery device is connected with the process exhaust gas pipeline.
Preferably, the primary heat exchanger is a heat pipe type heat exchanger.
Preferably, the quenching heat exchanger is a kettle type heat exchanger.
Preferably, the quenching heat exchanger is an immersed coil heat exchanger.
Preferably, the condenser is a horizontal shell-and-tube heat exchanger.
The beneficial effects are that: compared with the prior art, the utility model reasonably utilizes substances in the production system to cool the target product divinylbenzene, avoids overlong residence time of the target product divinylbenzene in a high temperature area, prevents polymerization reaction, improves the content of the target product divinylbenzene, and the cooled dehydrogenation product is layered in an oil-water separation tank, wherein the layered process wastewater provides heat exchange medium for the quenching heat exchanger, thereby effectively utilizing the process wastewater.
Drawings
FIG. 1 is a process flow diagram of a divinylbenzene cooling system of the present utility model.
In the figure: divinylbenzene pipeline 101, primary heat exchanger 1, quench heat exchanger 2, condenser 3, oil water separating tank 4, process waste water pipeline 401, dehydrogenation tail gas buffer tank 5, dehydrogenation tail gas pipeline 501, reflux pipeline 502, vacuum pump 6, process waste gas pipeline 601, vertical cylinder furnace 7, condensate water tank 8, condensate water pipeline 801, hot steam pipeline 802.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Referring to fig. 1, a divinylbenzene pipeline 101, a primary heat exchanger 1, a quenching heat exchanger 2, a condenser 3, an oil-water separation tank 4, a process waste water pipeline 401, a dehydrogenation tail gas buffer tank 5, a dehydrogenation tail gas pipeline 501, a reflux pipeline 502, a vacuum pump 6, a process waste gas pipeline 601, a condensation water tank 8, a condensation water pipeline 801 and a vertical cylinder furnace 7, wherein the divinylbenzene pipeline 101 is connected with a shell side inlet of the primary heat exchanger 1, a shell side outlet of the primary heat exchanger 1 is connected with a shell side inlet of the quenching heat exchanger 2, a shell side outlet of the quenching heat exchanger 2 is connected with a material inlet of the condenser 3, a material outlet of the condenser 3 is connected with a material inlet of the oil-water separation tank 4, the oil-water separation tank 4 is provided with a gas outlet, the gas outlet is connected with an inlet of the dehydrogenation tail gas pipeline 501, the outlet of the dehydrogenation tail gas pipeline 501 is connected with an inlet of the dehydrogenation tail gas buffer tank 5, the oil-water outlet is connected with an inlet of the process waste water pipeline 401, the reflux pipeline 502 is connected between the dehydrogenation tail gas buffer tank 5 and the vacuum pump 6 and the other end of the vacuum pump 6, and the reflux pipeline 601 is connected with the other end of the vacuum buffer tank 4.
In the divinylbenzene cooling system, the temperature of the target product divinylbenzene is 445 ℃ when the target product divinylbenzene comes out of the shell side of the primary heat exchanger 1, the chemical and thermal state of the target product divinylbenzene is unstable under the condition of high temperature, the residence time in a high temperature area is too long, the polymerization reaction can occur, and the final content of the target product divinylbenzene is reduced.
The quenching heat exchanger 2 is arranged, the target product divinylbenzene enters the quenching heat exchanger 2 from the shell side outlet of the primary heat exchanger 1, the temperature is reduced from 445 ℃ to 185 ℃, the temperature of the target product divinylbenzene is reduced, the target product divinylbenzene is prevented from staying for too long time under the condition of high temperature, the probability of polymerization reaction is reduced, and the final content of the target product divinylbenzene is improved.
The divinylbenzene cooling system also comprises a condenser, and a material outlet of the condenser 2 is connected with a material inlet of the oil-water separation 5. The temperature of the material of the target product divinylbenzene after coming out of the shell side of the quenching heat exchanger 2 is 185 ℃, the material is cooled again after entering the condenser 3, the material can be changed into a liquid state from a gas state under the action of temperature, and then the material which is changed into the liquid state enters the 5 oil-water separation tank, and the layering is carried out in the 5 oil-water separation tank.
Further, the divinylbenzene cooling system further comprises a process waste water pipeline 401, the process waste water pipeline 401 is connected with a condensed water inlet of the condensed water tank 8, process waste water flows out from a water outlet of the oil-water separator 4, the processed process waste water is shared by the process waste water pipeline 401 and condensed water generated by a reboiler of the rectifying tower, the process waste water pipeline 401 is connected with the inlet of the condensed water tank 8, cooled condensed water is connected with a tube side of the quenching heat exchanger 2 through the condensed water pipeline 801, a heat exchange medium is provided for the quenching heat exchanger 2, and the water utilization rate is improved.
Further, the divinylbenzene cooling system further comprises a hot steam pipeline 802, the hot steam pipeline 802 is connected with a tube side outlet of the quenching heat exchanger 2, when materials exchange heat in the quenching heat exchanger 2, the temperature of the materials in the tube side of the quenching heat exchanger 2 can be increased, steam is generated, and the generated steam provides heat for dehydrogenation reaction through the hot steam pipeline, so that heat loss is reduced.
Further, the divinylbenzene cooling system further includes the process exhaust gas pipe 601, and the process exhaust gas pipe 601 is connected to the outlet of the vacuum pump 6. After the dehydrogenation tail gas is subjected to pressure balance in the dehydrogenation tail gas buffer 5, the pressure change of the dehydrogenation tail gas is balanced, the pressure fluctuation of the whole system is stabilized, process waste gas is formed under the action of the vacuum pump 6, and is connected with the vertical cylinder furnace 7 through the process waste gas pipeline 601 to supply fuel for the vertical cylinder furnace 7, so that the energy loss is reduced.
Further, the divinylbenzene cooling system further comprises an exhaust gas recovery device, the exhaust gas recovery device is composed of the vertical cylindrical furnace 7 and the process exhaust gas pipeline 601, the vertical cylindrical furnace 7 in the exhaust gas recovery device is connected with the process exhaust gas pipeline 601, fuel is provided for the vertical cylindrical furnace 7, environmental pollution is reduced, and the recycling rate of substances is improved.
In a preferred embodiment, the 1-stage heat exchanger is a heat pipe type heat exchanger, divinylbenzene is cooled in the 1-stage heat exchanger, the heat exchange efficiency of the heat pipe type heat exchanger is very high, divinylbenzene is better cooled, the heat pipe type heat exchanger is compact in structure, the resistance of heat exchange fluid in flowing is smaller, and energy loss is better reduced.
In another preferred embodiment, the quenching heat exchanger 2 is a kettle type heat exchanger, the materials of the kettle type heat exchanger adopt a countercurrent mode to improve the heat exchange coefficient, and meanwhile, a proper evaporation space is provided to provide a storage space for heat, so that the quenching heat exchanger is suitable for liquid-vapor heat exchange and can bear high temperature and high pressure.
In a further preferred embodiment, the quenching heat exchanger 2 is implemented as an immersed coil heat exchanger, the heat exchanger is formed by bending a metal tube into various shapes which are suitable for a container, and immersing the metal tube in liquid in the container for better heat exchange, so that the heat exchange coefficient is improved, the structure of the coil heat exchanger is simple, the coil heat exchanger can bear high pressure, the whole pressure fluctuation is better balanced, and meanwhile, corrosion-resistant materials can be selected for manufacturing materials.
In a further preferred embodiment, the condenser 3 is a horizontal shell-and-tube heat exchanger, and adopts a horizontal installation mode, so that the machine room area is saved relatively, and the cooling water system is simplified, on one hand, because the heat exchange tube is a straight tube, the scale is convenient to clean, and the water can also be cleaned in operation, and on the other hand, because the horizontal shell-and-tube heat exchanger is easier to clean, the cooling water can adopt water with poor water quality, and the waste water generated in the system is effectively utilized.
The foregoing disclosure is illustrative of the preferred embodiments of the present utility model, and is not to be construed as limiting the scope of the utility model, as it is understood by those skilled in the art that all or part of the above-described embodiments may be practiced with equivalents thereof, which fall within the scope of the utility model as defined by the appended claims.
Claims (9)
1. Divinylbenzene cooling system, its characterized in that: the device comprises a divinylbenzene pipeline, a primary heat exchanger, a quenching heat exchanger, a condenser, an oil-water separation tank, a process waste water pipeline, a dehydrogenation tail gas buffer tank, a dehydrogenation tail gas pipeline, a reflux pipeline, a vacuum pump, a process waste gas pipeline, a condensation water tank, a condensation water pipeline and a hot steam pipeline, wherein the divinylbenzene pipeline is connected with a shell side inlet of the primary heat exchanger, a shell side outlet of the primary heat exchanger is connected with a shell side inlet of the quenching heat exchanger, a shell side outlet of the quenching heat exchanger is connected with a material inlet of the condenser, a material outlet of the condenser is connected with a material inlet of the oil-water separation tank, the oil-water separation tank is provided with a gas outlet, the gas outlet is connected with an inlet of the dehydrogenation tail gas buffer tank, the water outlet is provided with a water outlet, the inlet of the process waste water pipeline is connected between the dehydrogenation tail gas buffer tank and the oil-water separation tank, so that substances at the bottom of the dehydrogenation tail gas buffer tank flow back to the oil-water separation tank, the oil-water separation tank is connected with the vacuum pump, and the other end of the vacuum pump is connected with one end of the waste gas buffer tank.
2. The divinylbenzene cooling system as set forth in claim 1 wherein: the device also comprises the process waste water pipeline which is connected with the condensate water inlet of the condensate water tank.
3. The divinylbenzene cooling system as set forth in claim 1 wherein: the divinylbenzene cooling system comprises a hot steam pipeline, and the hot steam pipeline is connected with a tube side outlet of the quenching heat exchanger.
4. The divinylbenzene cooling system as set forth in claim 1 wherein: the vacuum pump further comprises a process exhaust pipeline which is connected with an outlet of the vacuum pump.
5. The divinylbenzene cooling system as set forth in claim 1 wherein: the device is characterized by further comprising an exhaust gas recovery device, wherein the exhaust gas recovery device consists of a vertical cylindrical furnace and a process exhaust gas pipeline, and the vertical cylindrical furnace in the exhaust gas recovery device is connected with the process exhaust gas pipeline.
6. The divinylbenzene cooling system as set forth in claim 1 wherein: the primary heat exchanger is a heat pipe type heat exchanger.
7. The divinylbenzene cooling system as set forth in claim 1 wherein: the quenching heat exchanger is a kettle type heat exchanger.
8. The divinylbenzene cooling system as set forth in claim 1 wherein: the quenching heat exchanger is an immersed coil heat exchanger.
9. The divinylbenzene cooling system as set forth in claim 1 wherein: the condenser is a horizontal shell-and-tube heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222183294.9U CN218916049U (en) | 2022-08-17 | 2022-08-17 | Divinylbenzene cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222183294.9U CN218916049U (en) | 2022-08-17 | 2022-08-17 | Divinylbenzene cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218916049U true CN218916049U (en) | 2023-04-25 |
Family
ID=86013507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222183294.9U Active CN218916049U (en) | 2022-08-17 | 2022-08-17 | Divinylbenzene cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218916049U (en) |
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2022
- 2022-08-17 CN CN202222183294.9U patent/CN218916049U/en active Active
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