CN202485331U - Device for cryogenic recovery of hydrocarbon mixture from polyethylene film separation tail gas - Google Patents
Device for cryogenic recovery of hydrocarbon mixture from polyethylene film separation tail gas Download PDFInfo
- Publication number
- CN202485331U CN202485331U CN2012201145894U CN201220114589U CN202485331U CN 202485331 U CN202485331 U CN 202485331U CN 2012201145894 U CN2012201145894 U CN 2012201145894U CN 201220114589 U CN201220114589 U CN 201220114589U CN 202485331 U CN202485331 U CN 202485331U
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- Prior art keywords
- heat exchanger
- gas
- pipeline
- joint
- outlet
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- 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.)
- Expired - Lifetime
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- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 25
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 25
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 25
- 239000000203 mixture Substances 0.000 title claims abstract description 24
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 12
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 11
- -1 polyethylene Polymers 0.000 title claims abstract description 11
- 238000000926 separation method Methods 0.000 title claims abstract description 9
- 238000011084 recovery Methods 0.000 title abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 230000008676 import Effects 0.000 claims description 25
- 239000006096 absorbing agent Substances 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 15
- 239000002912 waste gas Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000001035 drying Methods 0.000 abstract 2
- 239000012528 membrane Substances 0.000 abstract 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003595 mist Substances 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The utility model relates to a device for cryogenic recovery of hydrocarbon mixture from the polyethylene film separation tail gas. A membrane separation tail gas joint, an exhaust gas joint, a hydrocarbon mixture recovery joint, a drying adsorber drainage joint and a turbo-expander drainage joint are fixed on the wall of an insulation can; a drying adsorber, a small heat exchanger, a big heat exchanger, a throttling valve, a gas-liquid separator and an expander are fixed in the insulation can; the membrane separation tail gas is connected with an inlet a1 of the small heat exchanger, and an outlet a2 of the small heat exchanger is connected with an inlet c1 of the big heat exchanger; an outlet c2 of the big heat exchanger is connected with an inlet of the gas-liquid separator; a bottom outlet of the gas-liquid separator is connected with an inlet f1 of the gas-liquid separator, and an outlet f2 of the gas-liquid separator is connected with the hydrocarbon mixture recovery joint; a top outlet of the gas-liquid separator is connected with an inlet e1 of the big heat exchanger, and an outlet e2 of the big heat exchanger is connected with an inlet of the turbo-expander; an outlet of the turbo-expander is connected with an inlet d1 of the big heat exchanger, and an outlet d2 of the big heat exchanger is connected with an inlet b1 of the small heat exchanger; and an outlet b2 of the small heat exchanger is connected with the exhaust gas joint. The device provided by the utility model has a simple structure, high recovery rate and simple interface.
Description
Technical field
This practical retracting device that relates to a kind of hydrocarbon mixture is particularly suitable for reclaiming polyethylene film and separates the hydrocarbon mixture in the tail gas.
Technical background:
In polythene production process; From reactor discharging inert gas, contain many unreacted monomer ethylene, butene-1 and condensing agent (isopentane); Though through compression condensation recovery section butene-1 and condensing agent; But the restriction with condensation temperature owing to be stressed still has portion gas can't reclaim use.The application of organic steam film recovery technology makes more ethene obtain recovery, but still contains the hydrocarbon mixture active ingredient about 10% in the film separation tail gas.This part discharging gas directly is discharged into flare system after the pressure-reducing valve decompression, caused a large amount of wastes of resource like this, has increased the unit consumption of device raw material simultaneously.
Summary of the invention
In order to overcome the deficiency of prior art, the utility model provides a kind of polyethylene film to separate the device that the tail gas deep cooling reclaims hydrocarbon mixture, and it is simple in structure, and the rate of recovery is high, and interface is simple.
The technical scheme that its technical problem of the utility model solution is taked is: fixedly film separation waste gas joint, waste gas joint, hydrocarbon mixture reclaim joint, Dry Absorber drainage joint and turbo-expander drainage joint on the insulation tank wall; The interior fixedly Dry Absorber of incubator, little heat exchanger, big heat exchanger, choke valve, gas-liquid separator and decompressor; Described film separates the waste gas joint and connects described Dry Absorber through pipeline; The lower end of Dry Absorber connects described Dry Absorber drainage joint through pipeline; The upper end of Dry Absorber connects the a1 import of little heat exchanger through pipeline; The a2 that communicates with a1 exports the c1 import that connects big heat exchanger through pipeline, and the c2 that communicates with c1 exports the import that connects gas-liquid separator through pipeline, and the outlet at bottom of gas-liquid separator connects the f1 import of gas-liquid separator through pipeline, choke valve; The f2 outlet that communicates with f1 connects described hydrocarbon mixture through pipeline and reclaims joint; The gas-liquid separator top exit connects the e1 import of big heat exchanger through pipeline, and the e2 that communicates with e1 outlet connects the import of said turbo-expander through pipeline, and the outlet of turbo-expander connects the d1 import of big heat exchanger through pipeline; The d2 that communicates with d1 exports the b1 import that connects little heat exchanger through pipeline, and the b2 that communicates with b1 outlet connects described waste gas joint through pipeline.
The utlity model has advantage: 1. effectively utilized the pressure that original mist had ability; Adopt turbine expansion technology deep refrigerating, need not additional power and can realize liquefying and separate the mixed olefins that the hydrocarbon mixture product reclaims and directly to return the production system cycling and reutilization; 2. reduced the polyethylene production cost; 3. adopt the low-temperature liquefaction isolation technics, the rate of recovery of hydrocarbon mixture can reach 80% equipment and adopt container-type integral insulation construction, high insulating effect; 4. be connected easyly with original system, only need to transform film tail gas import and hydrocarbon mixture product, exhaust combustion outlet line get final product.
Description of drawings:
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Accompanying drawing is the utility model sketch map.
The specific embodiment:
Shown in accompanying drawing; Fixedly film separation waste gas joint 4, waste gas joint 3, hydrocarbon mixture reclaim joint 2, Dry Absorber drainage joint 6 and turbo-expander drainage joint 11 on incubator 1 wall; Incubator 1 interior fixedly Dry Absorber 5, little heat exchanger 7, big heat exchanger 8, choke valve 9, gas-liquid separator 10 and decompressor 12; Described film separates waste gas joint 4 and connects described Dry Absorber 5 through pipeline; The lower end of Dry Absorber 5 connects described Dry Absorber drainage joint 6 through pipeline, and the upper end of Dry Absorber 5 connects the a1 import of little heat exchanger 7 through pipeline, and the a2 that communicates with a1 outlet connects the c1 import of big heat exchanger 8 through pipeline; The c2 outlet that communicates with c1 connects the import of gas-liquid separator 10 through pipeline; The outlet at bottom of gas-liquid separator 10 connects the f1 import of gas-liquid separator 10 through pipeline, choke valve 9, and the f2 that communicates with f1 outlet connects described hydrocarbon mixture through pipeline and reclaims joint 2, and gas-liquid separator 10 top exits connect the e1 import of big heat exchanger 8 through pipeline; The e2 outlet that communicates with e1 connects the import of said turbo-expander 12 through pipeline; The outlet of turbo-expander 12 connects the d1 import of big heat exchanger 8 through pipeline, and the d2 that communicates with d1 outlet connects the b1 import of little heat exchanger 7 through pipeline, and the b2 that communicates with b1 outlet connects described waste gas joint 3 through pipeline.
The pressure differential at described choke valve 9 two ends is 0.55-0.6MPa.
The pressure differential at described turbo-expander 12 two ends is 0.65-0.7MPa.
Through key component in the tail gas after the film separation is hydrocarbon mixture; The characteristic that differs greatly according to film tail gas mixing gas component liquefaction point; Utilize film tail gas self pressure ability, be generally 0.7MPa, adopt the turbo-expander adiabatic expansion; The temperature of mist progressively is reduced to about-130 ℃, the olefin component overwhelming majority in the mist will liquefy at this moment.
Make the active principle hydrocarbon mixture obtain separating through gas-liquid separator, the liquid hydrocarbon mixture in gas-liquid separator bottom returns the polyethylene production system through the heat exchanger countercurrent flow after the rewarming gasification.Tail gas behind the gas-liquid separator top portion hydrocarbon gets into the decompressor swell refrigeration earlier through heat exchanger countercurrent flow rewarming, and then behind heat exchanger countercurrent flow rewarming, send polyethylene burning pipe network system through the waste gas joint.
Claims (3)
1. a polyethylene film separates the device that the tail gas deep cooling reclaims hydrocarbon mixture; It is characterized in that: fixedly film separation waste gas joint (4), waste gas joint (3), hydrocarbon mixture reclaim joint (2), Dry Absorber drainage joint (6) and turbo-expander drainage joint (11) on incubator (1) wall; The interior fixedly Dry Absorber (5) of incubator (1), little heat exchanger (7), big heat exchanger (8), choke valve (9), gas-liquid separator (10) and decompressor (12); Described film separates waste gas joint (4) and connects described Dry Absorber (5) through pipeline; The lower end of Dry Absorber (5) connects described Dry Absorber drainage joint (6) through pipeline; The upper end of Dry Absorber (5) connects the a1 import of little heat exchanger (7) through pipeline; The a2 that communicates with a1 exports the c1 import that connects big heat exchanger (8) through pipeline, and the c2 that communicates with c1 exports the import that connects gas-liquid separator (10) through pipeline, and the outlet at bottom of gas-liquid separator (10) connects the f1 import of gas-liquid separator (10) through pipeline, choke valve (9); The f2 outlet that communicates with f1 connects described hydrocarbon mixture through pipeline and reclaims joint (2); Gas-liquid separator (10) top exit connects the e1 import of big heat exchanger (8) through pipeline, and the e2 that communicates with e1 outlet connects the import of said turbo-expander (12) through pipeline, and the outlet of turbo-expander (12) connects the d1 import of big heat exchanger (8) through pipeline; The d2 that communicates with d1 exports the b1 import that connects little heat exchanger (7) through pipeline, and the b2 that communicates with b1 outlet connects described waste gas joint (3) through pipeline.
2. polyethylene film according to claim 1 separates the device that the tail gas deep cooling reclaims hydrocarbon mixture, and it is characterized in that: the pressure differential at described choke valve (9) two ends is 0.55-0.6MPa.
3. polyethylene film according to claim 1 separates the device that the tail gas deep cooling reclaims hydrocarbon mixture, and it is characterized in that: the pressure differential at described turbo-expander (12) two ends is 0.65-0.7MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201145894U CN202485331U (en) | 2012-03-16 | 2012-03-16 | Device for cryogenic recovery of hydrocarbon mixture from polyethylene film separation tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201145894U CN202485331U (en) | 2012-03-16 | 2012-03-16 | Device for cryogenic recovery of hydrocarbon mixture from polyethylene film separation tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485331U true CN202485331U (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201145894U Expired - Lifetime CN202485331U (en) | 2012-03-16 | 2012-03-16 | Device for cryogenic recovery of hydrocarbon mixture from polyethylene film separation tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202485331U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9034995B2 (en) | 2013-09-25 | 2015-05-19 | Hangzhou Shuang'an Science and Technology Company Limited | System and process for recovering gas emissions generated in producing olefin polymers |
| CN104792117A (en) * | 2015-03-15 | 2015-07-22 | 浙江大学 | Olefin polymer effluent gas recycling device and method in production |
| CN104826445A (en) * | 2015-05-15 | 2015-08-12 | 大连理工大学 | Separating process for recycling start-up tail gas of ethylene compression refrigerating system |
| CN105157347A (en) * | 2015-09-14 | 2015-12-16 | 杭州双安科技有限公司 | Exhaust gas recovery system for slurry process olefin polymer production technology |
| CN106731441A (en) * | 2016-12-07 | 2017-05-31 | 杭州欧缘科技有限公司 | A kind of system and method for being used for effluent gas recovery in olefin polymer production |
| CN111778060A (en) * | 2020-07-30 | 2020-10-16 | 连云港市拓普科技发展有限公司 | Oil gas recovery device and recovery method for cooling and saving energy by using excess pressure |
-
2012
- 2012-03-16 CN CN2012201145894U patent/CN202485331U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9034995B2 (en) | 2013-09-25 | 2015-05-19 | Hangzhou Shuang'an Science and Technology Company Limited | System and process for recovering gas emissions generated in producing olefin polymers |
| CN104792117A (en) * | 2015-03-15 | 2015-07-22 | 浙江大学 | Olefin polymer effluent gas recycling device and method in production |
| CN104792117B (en) * | 2015-03-15 | 2017-02-01 | 浙江大学 | Olefin polymer effluent gas recycling device and method in production |
| CN104826445A (en) * | 2015-05-15 | 2015-08-12 | 大连理工大学 | Separating process for recycling start-up tail gas of ethylene compression refrigerating system |
| CN104826445B (en) * | 2015-05-15 | 2017-05-03 | 大连理工大学 | Separating process for recycling start-up tail gas of ethylene compression refrigerating system |
| CN105157347A (en) * | 2015-09-14 | 2015-12-16 | 杭州双安科技有限公司 | Exhaust gas recovery system for slurry process olefin polymer production technology |
| CN106731441A (en) * | 2016-12-07 | 2017-05-31 | 杭州欧缘科技有限公司 | A kind of system and method for being used for effluent gas recovery in olefin polymer production |
| US11007474B2 (en) | 2016-12-07 | 2021-05-18 | Hangzhou Ouyuan Technology Co., Ltd | System and method used to recycle exhaust gas during olefin polymer production |
| CN106731441B (en) * | 2016-12-07 | 2023-01-24 | 杭州欧缘科技有限公司 | System and method for vent gas recovery in olefin polymer production |
| CN111778060A (en) * | 2020-07-30 | 2020-10-16 | 连云港市拓普科技发展有限公司 | Oil gas recovery device and recovery method for cooling and saving energy by using excess pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160918 Address after: Room 21, 2301, century street, 056000 high street, Handan, Hebei Patentee after: Handan cryogenic gas separation equipment Co., Ltd. Address before: Handan City, Hebei province 056002 Hanshan Handan Luo two living area 8-5-1 Patentee before: Yang Zhongwei |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |