CN200992525Y - Forced circulating system for reducing reboiler polymerization for C5 separation - Google Patents
Forced circulating system for reducing reboiler polymerization for C5 separation Download PDFInfo
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- CN200992525Y CN200992525Y CNU2006201702996U CN200620170299U CN200992525Y CN 200992525 Y CN200992525 Y CN 200992525Y CN U2006201702996 U CNU2006201702996 U CN U2006201702996U CN 200620170299 U CN200620170299 U CN 200620170299U CN 200992525 Y CN200992525 Y CN 200992525Y
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- reboiler
- tower
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- pipeline
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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
Abstract
A polymeric forced circulation system during separating C5 to reduce reboiler, which belongs to the equipment of DMF method of extraction separation isoprene and diolefin, consists of feed inlet of the reboiler(1), the reboiler(3), a feed outlet (4) and a tower of extraction separation(5) to from a close system through the connection of the pipeline. The utility model has the characterized in that: from the column reactor of the tower of extraction separation (5) to the pipeline of the reboiler(3), a circulation pump (2) is added herein. Compared with the reboiler of the original thermosyphon, the utility model improves the flow speed of the materials in the reboiler, and reduces the residence time of the materials. The high speed of materials has a washing action for reboiler monitor so as to improve the heating exchange efficiency and reduce the temperature about 3 to 5 DEG C of reboiler outlet at the same time, with the cycle of one reboiler extending about one time. In addition, the utility model resolves the problems that the jam of the reboiler, short cycle of the reboiler and high cost for maintenance etc, due to a plurality of polymers produced by high temperature in the reboiler outlet.
Description
Technical field
Reduce reboiler polymeric forced circulation system during C5 separates, belong at DMF method extracting and separating isoprene and diolefin equipment.
Background technology
The a considerable amount of C 5 fractions of by-product in the process of petroleum cracking system ethene, contain 40～60% the diolefins such as isoprene, cyclopentadiene and m-pentadiene of having an appointment in the C 5 fraction, these diolefin chemical property are active, it is the important source material of a lot of fine chemical products, therefore, the separation utilization of C 5 fraction is for the economic benefit that improves ethylene unit, and the comprehensive utilization petroleum resources are extremely meaningful.But C 5 fraction is close by more than 30 kinds of boiling points, the component that easily forms azeotrope is each other again formed, in order to isolate each diolefin of higher degree, industrial general employing rectifying separation is purified with the separation that the means that technologies such as extracting rectifying separates combine are carried out C 5 fraction at present, and its complex process and flow process are longer.In the extracting and separating purification process,, under overheat condition, be easy to cause autohemagglutination or copolymerization because these diolefin character are very active.Autohemagglutination or copolymerization are in case take place, and the polymkeric substance of generation will make column plate stop up and heat exchanger tube inwall gum deposit, cause the operation of tower system unstable, reduce the heat exchange effect, and the loss monomer increases energy consumption, will have in the time of seriously to the cleaning of stopping of rectifying tower and interchanger.In the tripping device of C 5 fraction, the autohemagglutination of diolefin and copolymerization are the important factors that causes the reduction of the device cycle of operation, and the autohemagglutination or the copolymerization that therefore suppress diolefin are important link in Petrocarbon five separating technologies.In the prior art, industrial effective means is to add stopper and make stopper keep autohemagglutination or copolymerization that certain concentration suppresses diolefin in technological processs such as the heating of C 5 fraction material experience, rectifying separation, extracting and separating.But polymerization inhibition effect will be not ideal when temperature is higher, and temperature is low relatively more, and polymerization inhibition effect is good more.
The utility model content
Technical problem to be solved in the utility model is effectively to reduce tower still reboiler temperature, improves reboiler material stream passed speed, reduces residence time of material, slows down C5 that polymer gathers and reduces reboiler polymeric forced circulation system in separating.
The technical scheme that is adopted that the utility model solves the problems of the technologies described above is: reduce reboiler polymeric forced circulation system during this C5 separates, comprise reboiler opening for feed, reboiler, reboiler discharge port, extraction tower, by the continuous closed system that forms of pipeline, it is characterized in that: to the pipeline of reboiler, set up recycle pump at extraction Tata still.Recycle pump plays pump circulation.
Recycle pump is one or two.It is standby having one in the time of two.
Compared with prior art, the beneficial effect that the utility model had is: extracting the Tata still to the pipeline of tower still reboiler, set up positively-acting recycle pump, rely on the circulation speed of the interior material of flow velocity raising reboiler of recycle pump, reduce residence time of material, in fact also reduced material superheated possibility, the material of big flow velocity plays souring to the reboiler tube side, improve heat exchange efficiency simultaneously, reduce by 3～5 ℃ of reboiler temperature outs.Compare with former thermosiphon reboiler, separate unit reboiler life cycle prolongs nearly 1 times.The reboiler that has solved prior art causes reboiler to stop up because of the too high overheated generation number of polymers of temperature out, and the reboiler life cycle is short, problems such as recondition expense height.
Description of drawings
Fig. 1 is the structural representation of the utility model reboiler.
Be most preferred embodiment of the present utility model, wherein: 1 reboiler opening for feed, 2 recycle pumps, 3 reboilers, 4 reboiler discharge ports, 5 extraction towers.Be described further reducing reboiler polymeric forced circulation system in the C5 separation of the present utility model below in conjunction with accompanying drawing:
Embodiment
During separating, reduces this C5 reboiler polymeric forced circulation system, comprise reboiler opening for feed 1, reboiler 3, reboiler discharge port 4, extraction tower 5, to the pipeline of reboiler 3, set up recycle pump 2 at extraction tower 5 tower stills, linking to each other by pipeline forms a closed system.Recycle pump 2 is one or two.
Embodiment 1:
Entrance pipe to a collection tower reboiler E601 is transformed, and increases by two flow 80m
3/ h, lift 25m recycle pump 2 (one opens one is equipped with), make the material of T601B tower still enter recycle pump 2 by reboiler opening for feed 1, recycle pump 2 is sent into E601 reboiler 3, and the processing condition of keeping the T601 tower are constant, detects E601 reboiler 3 temperature outs and can reduce by 3～5 ℃ more originally, the life cycle of reboiler 3 is by original average 56 days of using, extend to 89 days, prolonged nearly 1 times, see Table 1.
Table 1
| Time | Before one collection tower is transformed | Time | After one collection tower is transformed | ||
| The reboiler temperature out, ℃ | The reboiler life cycle, day | The reboiler temperature out, ℃ | The reboiler life cycle, day | ||
| 2006.7.6 | 121.6 | E601B used 56 days | 2006.9.22 | 114.5 | E601A used 89 days |
| 2007.7.16 | 120.3 | 2006.10.12 | 112.3 | ||
| 2006.8.5 | 122.5 | 2006.10.20 | 115.3 | ||
| 2006.8.15 | 118.6 | 2006.11.1 | 114.6 | ||
| 2006.9.5 | 120.6 | 2006.11.12 | 116.5 | ||
Embodiment 2-3:
Entrance pipe to two collection tower reboiler E701 is transformed, and increases by two flow 51m
3/ h, lift 25m recycle pump 2 (one opens one is equipped with), the material that makes T701B tower still is by entering recycle pump 2 by reboiler opening for feed 1, recycle pump 2 is sent into E701 reboiler 3, the processing condition of keeping the T701 tower are constant, detect E701 reboiler 3 temperature outs and can reduce by 3～5 ℃ more originally, the life cycle of reboiler 3 extended to 66 days in 45 days by original average the use by original average the use.Prolong about 1 times, seen Table 2.
Table 2
| Time | Before two collection towers are transformed | Time | After two collection towers are transformed | ||
| The reboiler temperature out, ℃ | The reboiler life cycle, day | The reboiler temperature out, ℃ | The reboiler life cycle, day | ||
| 2006.7.6 | 127.6 | E701A used 45 days | 2006.9.22 | 121.6 | E701A used 66 days |
| 2006.7.16 | 130.5 | 2006.10.12 | 120.3 | ||
| 2006.8.5 | 126.3 | E701B used 51 days | 2006.10.20 | 122.5 | E701A used 62 days |
| 2006.8.15 | 128.5 | 2006.11.1 | 118.6 | ||
| 2006.9.5 | 132.6 | 2006.11.12 | 120.6 | ||
Claims (2)
1, reduces reboiler polymeric forced circulation system during C5 separates, comprise reboiler opening for feed (1), reboiler (3), reboiler discharge port (4), extraction tower (5), by the continuous closed system that forms of pipeline, it is characterized in that: to the pipeline of reboiler (3), set up recycle pump (2) at extraction tower (5) tower still.
2, reduce reboiler polymeric forced circulation system during C5 according to claim 1 separates, it is characterized in that: recycle pump (2) is one or two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201702996U CN200992525Y (en) | 2006-12-31 | 2006-12-31 | Forced circulating system for reducing reboiler polymerization for C5 separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201702996U CN200992525Y (en) | 2006-12-31 | 2006-12-31 | Forced circulating system for reducing reboiler polymerization for C5 separation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200992525Y true CN200992525Y (en) | 2007-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201702996U Expired - Lifetime CN200992525Y (en) | 2006-12-31 | 2006-12-31 | Forced circulating system for reducing reboiler polymerization for C5 separation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730720A (en) * | 2011-04-14 | 2012-10-17 | 重庆紫光化工股份有限公司 | Method and system for recovering ammonia from gas containing hydrocyanic acid |
| CN104225956A (en) * | 2014-09-27 | 2014-12-24 | 安徽金禾实业股份有限公司 | Forced circulating extraction method in production of acesulfame |
| CN105776224A (en) * | 2016-03-17 | 2016-07-20 | 亚洲硅业（青海）有限公司 | Method for washing rectifying column reboiler |
| CN110563541A (en) * | 2019-09-05 | 2019-12-13 | 北方华锦化学工业股份有限公司 | Method for reducing solvent autopolymer of butadiene device |
-
2006
- 2006-12-31 CN CNU2006201702996U patent/CN200992525Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730720A (en) * | 2011-04-14 | 2012-10-17 | 重庆紫光化工股份有限公司 | Method and system for recovering ammonia from gas containing hydrocyanic acid |
| CN102730720B (en) * | 2011-04-14 | 2014-04-23 | 重庆紫光天化蛋氨酸有限责任公司 | Method and system for recovering ammonia from gas containing hydrocyanic acid |
| CN104225956A (en) * | 2014-09-27 | 2014-12-24 | 安徽金禾实业股份有限公司 | Forced circulating extraction method in production of acesulfame |
| CN104225956B (en) * | 2014-09-27 | 2016-09-14 | 安徽金禾实业股份有限公司 | Forced circulation extracting process in acesulfame potassium production |
| CN105776224A (en) * | 2016-03-17 | 2016-07-20 | 亚洲硅业（青海）有限公司 | Method for washing rectifying column reboiler |
| CN110563541A (en) * | 2019-09-05 | 2019-12-13 | 北方华锦化学工业股份有限公司 | Method for reducing solvent autopolymer of butadiene device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZIBO LUHUA HONGJIN CHEMICAL CO., LTD Free format text: FORMER OWNER: ZIBO QILU ETHYLENE LUHUA CHEMICAL INDUSTRY CO., LTD. Effective date: 20100726 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100726 Address after: 255411 No. 3, Feng Bei Road, Zhangdian District, Shandong, Zibo Patentee after: Zibo Luhua Hongjin Chemical Co.,Ltd. Address before: 255411 No. 3, Feng Bei Road, Zhangdian District, Shandong, Zibo Patentee before: Zibo Qilu Ethylene Luhua Chemical Industry Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: ZIBO LUHUA HONGJIN NEW MATERIAL CO., LTD. Free format text: FORMER NAME: ZIBO LUHUA HONGJIN CHEMICAL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 255411 No. 3, Feng Bei Road, Zhangdian District, Shandong, Zibo Patentee after: ZIBO LUHUA HONGJIN NEW MATERIAL CO., LTD. Address before: 255411 No. 3, Feng Bei Road, Zhangdian District, Shandong, Zibo Patentee before: Zibo Luhua Hongjin Chemical Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071219 |
|
| EXPY | Termination of patent right or utility model |