CN212833548U - Closed boiling device for stopping styrene rectifying tower - Google Patents
Closed boiling device for stopping styrene rectifying tower Download PDFInfo
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- CN212833548U CN212833548U CN202021559061.9U CN202021559061U CN212833548U CN 212833548 U CN212833548 U CN 212833548U CN 202021559061 U CN202021559061 U CN 202021559061U CN 212833548 U CN212833548 U CN 212833548U
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- styrene
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- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 title claims abstract description 270
- 238000009835 boiling Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000011084 recovery Methods 0.000 claims abstract description 31
- 238000000926 separation method Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000010992 reflux Methods 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000010025 steaming Methods 0.000 claims description 2
- 238000010411 cooking Methods 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 7
- 239000002351 wastewater Substances 0.000 abstract description 7
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The utility model belongs to the technical field of chemical industry equipment, concretely relates to airtight boiling device of styrene rectifying column parking among styrene coproduction epoxypropane technology, the device include styrene rectifying system and oil-water separation system, styrene rectifying system includes thick styrene tower, fine styrene tower and styrene recovery tower, and oil-water separation system includes coalescer, oil-water separation jar and strip tower. The utility model discloses an ingenious design realizes the airtight boiling of styrene rectification system on process flow, and realizes the organic recovery to the steam that the in-process of cooking produced, makes waste water by cyclic utilization at the in-process of cooking to avoid cooking the in-process and produce the waste material and discharge to atmosphere polluted environment, and through the categorised recovery to the oil water mixing phase, realize the energy saving and consumption reduction of resource.
Description
Technical Field
The utility model belongs to the technical field of chemical industry equipment, concretely relates to styrene rectifying tower parking airtight boiling device in styrene coproduction epoxypropane technology.
Background
When a chemical device is stopped, a chemical enterprise needs to perform a series of operations such as material returning, blowing, cooking, replacement and the like on equipment such as a tower, a storage tank, a pipeline and the like used in the production process, and because flammable or harmful media possibly exist in the pipeline or the equipment, gas in the equipment needs to be detected after the operation is completed, and after the content detection is qualified, an operator can be fired or perform other operations in the equipment or the device.
The chemical device or equipment can realize the closed recovery of materials in the material returning and cooking processes, but the materials are mostly directly discharged to the atmosphere in the cooking process, especially the tower of the rectification system is used for cooking, and harmful substances remained on the inner walls of the system pipeline and the equipment are directly discharged to the atmosphere after being heated by steam, thereby causing serious pollution to the environment; in addition, the operator works in an environment where harmful substances are discharged, causing a certain damage to the human body of the operator.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not enough of above-mentioned problem, the utility model aims at providing a airtight boiling device of styrene rectifying column parking.
The utility model discloses a realize through following technical scheme: a closed boiling device for a styrene rectifying tower during shutdown comprises a styrene rectifying system and an oil-water separation system, the styrene rectifying system comprises a crude styrene tower, a refined styrene tower and a styrene recovery tower, the oil-water separation system comprises a coalescer, an oil-water separation tank and a stripping tower, the system is characterized in that the top of a crude styrene tower is connected with a crude styrene reflux tank through a crude tower top cooler, the outlet of the crude styrene reflux tank is respectively connected with the crude styrene tower through a crude styrene reflux pump and connected with an oil-water separation tank through a crude styrene drainage pump, the bottom of the crude styrene tower is connected with a fine styrene tower through a crude styrene tower kettle pump, the top outlet of the fine styrene tower is connected with a fine styrene tower reflux tank through a fine tower top condenser, the outlet of the fine styrene tower reflux tank is connected with a fine styrene tower through a fine styrene tower reflux pump, and the fine tower top condenser is also connected with the fine styrene tower through a fine tower top tail cooler; the tower kettle of the refined styrene tower is connected with a styrene recovery tower through a refined styrene tower kettle pump, the styrene recovery tower is connected with a coalescer through a styrene recovery tower kettle pump, one side of an outlet of the coalescer is connected with an oil-water separation tank, the other side of the coalescer is connected with a stripping tower, the tower top of the stripping tower is connected with a stripping tower top tank through a stripping tower top cooler, one side of the outlet of the stripping tower top tank is connected with the stripping tower through a stripping tower top pump, the other side of the outlet of the stripping tower top tank is connected with a sewage tank, the tower kettle of the stripping tower is sequentially connected with a process water pump and a circulating water cooling heat exchanger through pipelines;
the crude styrene tower kettle pump, the crude styrene tower top draining pump, the fine styrene tower kettle pump, the fine styrene tower reflux pump and the styrene recovery tower kettle pump are respectively connected with the oil-water separation tank through pipelines.
Preferably, the crude styrene tower is connected with a crude tower reboiler through pipeline circulation; the refined styrene tower is circularly connected with the refined tower reboiler through a pipeline, and the styrene recovery tower is circularly connected with the recovery tower reboiler through a pipeline.
Preferably, an oil outlet of the oil-water separation tank is connected with the intermediate tank area through a dehydration liquid pump, and a water outlet of the oil-water separation tank is connected with the coalescer through a process sewage pump.
The utility model has the advantages that: the utility model discloses an ingenious design realizes the airtight boiling of styrene rectification system on process flow, and realizes the organic recovery to the steam that the in-process of cooking produced, makes waste water by cyclic utilization at the in-process of cooking to avoid cooking the in-process and produce the waste material and discharge to atmosphere polluted environment, and through the categorised recovery to the oil water mixing phase, realize the energy saving and consumption reduction of resource.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the drawing, 1 a crude styrene tower, 101 a crude tower reboiler, 102 a crude tower overhead cooler, 103 a crude styrene reflux tank, 104 a crude styrene reflux pump, 105 a crude styrene tower overhead drain pump, 106 a crude styrene tower kettle pump, 2 a fine styrene tower, 201 a fine tower reboiler, 202 a fine tower condenser, 203 a fine tower tail cold air, 204 a fine styrene reflux tank, 206 a fine styrene tower reflux pump, 207 a fine styrene tower kettle pump, 3 a styrene recovery tower, 301 a recovery tower reboiler, 302 a styrene recovery tower kettle pump, 4 a coalescer, 5 an oil-water separation tank, 501 a process sewage pump, 502 a dehydration liquid pump, 6 a stripping tower 601, a stripping tower overhead cooler, 602 a stripping tower overhead tank, 603 a process water pump, 604 a circulating water cooling heat exchanger and 605 a stripping tower overhead pump.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the closed stopping and steaming device for the styrene rectifying tower comprises a styrene rectifying system and an oil-water separation system, wherein the styrene rectifying system comprises a crude styrene tower 1, a refined styrene tower 2 and a styrene recovery tower 3, and the oil-water separation system comprises a coalescer 4, an oil-water separation tank 5 and a stripping tower.
The top of the crude styrene tower 1 is connected to a crude styrene reflux tank 103 through a pipeline via a crude tower top cooler 102, a gas phase outlet of the crude styrene reflux tank 103 is recovered to the crude styrene tower 1 through a pipeline via a crude styrene reflux pump 104 for rectification again, a liquid phase outlet is discharged to an oil-water separation tank 5 through a crude styrene drainage pump, a tower kettle of the crude styrene tower 1 is connected with a refined styrene tower 2 through a crude styrene tower kettle pump 106, namely, a material treated by the crude styrene tower 1 is sent to the refined styrene tower 2 for treatment.
The outlet of the top of the refined styrene tower 2 is connected with a reflux tank of the refined styrene tower 2 through a refined tower top condenser, the outlet of the reflux tank of the refined styrene tower 2 is connected with the refined styrene tower 2 through a refined styrene tower reflux pump 206, and the gas phase outlet of the refined tower top condenser is connected with the refined styrene tower 2 through a refined tower top tail cooler; the bottom of the refined styrene tower 2 is connected with a styrene recovery tower 3 through a refined styrene tower bottom pump 207, the styrene recovery tower 3 is connected with a coalescer 4 through a styrene recovery tower bottom pump 302, one side of the outlet of the coalescer 4, namely the liquid phase outlet side, is connected with an oil-water separation tank 5, the other side, namely a gas phase outlet, is connected with a stripping tower 6, the top of the stripping tower 6 is connected with a stripping tower top tank 602 through a stripping tower top cooler 601, one side of the outlet of the stripping tower top tank 602 is connected with the stripping tower 6 through a stripping tower top pump 605, the other side is connected with a sewage tank, the bottom of the stripping tower is sequentially connected with a process water pump 603 and a circulating water cooling heat exchanger 604 through pipelines, and the outlet of the circulating water cooling heat exchanger 604 is connected with the feed;
the crude styrene tower kettle pump 106, the crude styrene tower top drainage pump 105, the refined styrene tower kettle pump 207, the refined styrene tower reflux pump 206 and the styrene recovery tower kettle pump 302 are further respectively connected with the oil-water separation tank 5 through pipelines, an oil outlet of the oil-water separation tank 5 is recovered to an intermediate tank area through a dehydration pump 502 for treatment, a water outlet of the oil-water separation tank 5 is fed to the coalescer 4 through a process water pump 603, and enters the stripping tower through the coalescer 4 for stripping.
The crude styrene tower 1 is circularly connected with a crude tower reboiler 101 through a pipeline; the refined styrene tower 2 is circularly connected with a refined tower reboiler 201 through a pipeline, and the styrene recovery tower 3 is circularly connected with a recovery tower reboiler 301 through a pipeline.
The utility model discloses with the profit processing system intercommunication of styrene rectification system and dehydration reaction unit, make the oily waste water that each tower ware distillation produced in the styrene rectification system realize water oil separating in the profit processing system of dehydration reaction unit, retrieve the organic matter, return rectification system again behind the sewage treatment and boil the use.
The specific operation is as follows: firstly, the material returning of each tower and an oil-water separation system in a styrene rectification system is finished, the cooling capacity reduction of a condensation system at the top of the tower is used, a reboiler 301 of a coarse tower, a fine tower and a recovery tower is in a preheating state, and the tower is operated under micro positive pressure.
Injecting demineralized water into each tower kettle in the rectification system through a temporary pipeline and establishing a liquid level, putting in each tower reboiler, heating the demineralized water in the tower kettle to enable the steam to be water vapor, paying attention to the control of the tower pressure and the liquid level of the tower kettle in the process, carrying organic materials on the tower wall and the filler in the tower by the steam to be brought into the tower top, cooling the materials by a condenser at the tower top to form a liquid phase and entering a reflux tank at the tower top, starting a corresponding pump to discharge oily wastewater into an oil-water separation tank 5 of the oil-water separation system after the liquid level is established, stopping the pump after the liquid level is pumped out, and repeatedly and intermittently operating. And finally, treating the oily wastewater in an oil-water separator through oil-water separation, a coalescer 4 and a stripping tower, recovering the organic matters in a material storage tank, controlling the hydrocarbon content in the treated oily wastewater to be below 0.0001%, and conveying the oily wastewater to a rectification system for recycling.
After the operation is continuously carried out, organic matters in the drainage water of each tower are analyzed, and the cooking effect is judged according to the content.
Other technical features than those described in the specification are known to those skilled in the art.
Claims (3)
1. A closed boiling device for stopping a styrene rectifying tower comprises a styrene rectifying system and an oil-water separation system, wherein the styrene rectifying system comprises a crude styrene tower (1), a refined styrene tower (2) and a styrene recovery tower (3), the oil-water separation system comprises a coalescer (4), an oil-water separation tank (5) and a stripping tower, and is characterized in that,
the top of the crude styrene tower (1) is connected with a crude styrene reflux tank (103) through a crude tower top cooler (102), the outlet of the crude styrene reflux tank (103) is respectively connected with the crude styrene tower (1) through a crude styrene reflux pump (104) and connected with an oil-water separation tank (5) through a crude styrene drainage pump, the bottom of the crude styrene tower (1) is connected with a refined styrene tower (2) through a crude styrene tower kettle pump (106),
the outlet of the top of the refined styrene tower (2) is connected with a reflux tank of the refined styrene tower (2) through a refined tower top condenser, the outlet of the reflux tank of the refined styrene tower (2) is connected with the refined styrene tower (2) through a refined styrene tower reflux pump (206), and the refined tower top condenser is also connected with the refined styrene tower (2) through a refined tower top tail gas cooler;
the bottom of the refined styrene tower (2) is connected with a styrene recovery tower (3) through a refined styrene tower bottom pump (207), the styrene recovery tower (3) is connected with a coalescer (4) through a styrene recovery tower bottom pump (302), one side of the outlet of the coalescer (4) is connected with an oil-water separation tank (5), the other side is connected with a stripping tower (6),
the top of the stripping tower (6) is connected with a stripping tower top tank (602) through a stripping tower top cooler (601), one side of an outlet of the stripping tower top tank (602) is connected with the stripping tower (6) through a stripping tower top pump (605), the other side of the outlet of the stripping tower top tank is connected with a sewage tank, a tower kettle of the stripping tower (6) is sequentially connected with a process water pump (603) and a circulating water cooling heat exchanger (604) through pipelines, and an outlet of the circulating water cooling heat exchanger (604) is connected with a feed inlet of a crude styrene tower (1);
the crude styrene tower kettle pump (106), the crude styrene tower top draining pump (105), the refined styrene tower kettle pump (207), the refined styrene tower reflux pump (206) and the styrene recovery tower kettle pump (302) are also respectively connected with the oil-water separation tank (5) through pipelines.
2. The shutdown closed digester for styrene rectification column according to claim 1, characterized in that the crude styrene column (1) is connected with a crude column reboiler (101) through pipeline circulation; the refined styrene tower (2) is connected with a refined tower reboiler (201) through pipeline circulation, and the styrene recovery tower (3) is connected with a recovery tower reboiler (301) through pipeline circulation.
3. The closed stopping and steaming device for the styrene rectifying tower according to claim 1, wherein the oil outlet of the oil-water separation tank (5) is connected with the intermediate tank region through a dehydration liquid pump (502), and the water outlet is connected with the coalescer (4) through a process sewage pump (501).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559061.9U CN212833548U (en) | 2020-07-31 | 2020-07-31 | Closed boiling device for stopping styrene rectifying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559061.9U CN212833548U (en) | 2020-07-31 | 2020-07-31 | Closed boiling device for stopping styrene rectifying tower |
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| Publication Number | Publication Date |
|---|---|
| CN212833548U true CN212833548U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021559061.9U Active CN212833548U (en) | 2020-07-31 | 2020-07-31 | Closed boiling device for stopping styrene rectifying tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304446A (en) * | 2022-08-31 | 2022-11-08 | 连云港石化有限公司 | Process setting and operating technology of water combined transportation and cooking tower of styrene device |
-
2020
- 2020-07-31 CN CN202021559061.9U patent/CN212833548U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304446A (en) * | 2022-08-31 | 2022-11-08 | 连云港石化有限公司 | Process setting and operating technology of water combined transportation and cooking tower of styrene device |
| CN115304446B (en) * | 2022-08-31 | 2023-11-03 | 连云港石化有限公司 | Flow setting of styrene device water intermodal transportation and digestion tower |
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