CN203269812U - Production device for increasing conversion rate of propylene - Google Patents
Production device for increasing conversion rate of propylene Download PDFInfo
- Publication number
- CN203269812U CN203269812U CN2013202512433U CN201320251243U CN203269812U CN 203269812 U CN203269812 U CN 203269812U CN 2013202512433 U CN2013202512433 U CN 2013202512433U CN 201320251243 U CN201320251243 U CN 201320251243U CN 203269812 U CN203269812 U CN 203269812U
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- propylene
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- liquid separation
- separation unit
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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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- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model provides a production device for increasing the conversion rate of propylene. The production device for increasing the conversion rate of propylene is characterized in that a mixed C4 raw material tank is connected with a feed port of a hydrogenation reactor sequentially through a heat exchanger and a heating furnace, a charge port of the hydrogenation reactor is connected with a condenser through the heat exchanger, the condenser is connected with a gas-liquid separation unit, a gas phase outlet of the gas-liquid separation unit is connected with a gas inlet of the hydrogenation reactor through a compressor, a liquid phase outlet of the gas-liquid separation unit is connected with a feed port of a catalytic rectifying tower, a tower top outlet of the catalytic rectifying tower is connected with a light C4 collection tank, a tower kettle outlet of the catalytic rectifying tower is connected with a feed port of a disproportionation reaction unit, and a discharge port of the disproportionation reaction unit is connected with a propylene collecting tank through a separation tower. The production device for increasing the conversion rate of the propylene, provided by the utility model, can be used for solving the technical problem of low chemical engineering utilization rate of mixed C4 existing in the prior art, meanwhile, is simple in structure and uncomplicated in a production process and can be used for greatly increasing the conversion rate of the propylene.
Description
Technical field
The utility model is specifically related to a kind of production equipment of propylene, is specifically related to a kind of production equipment that improves propylene conversion.
Background technology
Propylene is as one of important basic organic chemical industry raw material, and in recent years, its demand rises steadily, and propylene is mainly for the production of all multi-products such as polypropylene, isopropyl benzene, propylene oxide, vinylformic acid.The technique of producing propylene generally can be summarized as byproduct technique and proprietary technique, and wherein byproduct technique mainly refers to prepare propylene by steam cracking and catalytic cracking ethene processed; Proprietary technique refers to the technique of special Development and Production propylene, is mainly at present the Technologies such as dehydrogenating propane.mixed c 4 prepares the by-product of propylene and the by-product that catalytic cracking prepares propylene as steam cracking, wherein contain a large amount of butene-1s and butene-2, therefore, the mixed c 4 that uses as liquefied gas does not take full advantage of the attached output value of its chemical industry, its comprehensive utilization ratio is extremely low, and the existing mixed c 4 that utilizes is produced in the propylene technology, it is lower that it produces transformation efficiency, the high composition of the attached output value of chemical industry in mixed c 4 is not fully transformed, and the implement device structure is simplified not, Technical Economy is relatively poor, the chemical utilization of mixed c 4 is worth and does not also find full expression.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of production equipment that improves propylene conversion, solved the not high technical problem of mixed c 4 chemical utilization rate in the prior art, apparatus structure is simple simultaneously, and production process is uncomplicated, can greatly improve the transformation efficiency of propylene.
the utility model provides a kind of production equipment that improves propylene conversion, comprise the mixed c 4 head tank, this mixed c 4 head tank passes through interchanger in turn, process furnace is connected with the opening for feed of hydrogenator, the discharge port of this hydrogenator connects condenser by described interchanger, this condenser connects gas-liquid separation unit, wherein connect the gas inlet of hydrogenator in the gaseous phase outlet of gas-liquid separation unit by compressor, the liquid-phase outlet of gas-liquid separation unit connects the opening for feed of catalytic rectifying tower, the tower top outlet of catalytic rectifying tower connects light carbon four holding tanks, the tower reactor outlet of catalytic rectifying tower connects the opening for feed of disproportionation reaction unit, the discharge port of disproportionation reaction unit connects the propylene holding tank by knockout tower.
The liquid-phase outlet of described gas-liquid separation unit also is connected with the opening for feed of hydrogenator by interchanger, process furnace in turn.
The advantage that the utlity model has is:
The utility model provides a kind of production equipment that improves propylene conversion, has solved the not high technical problem of mixed c 4 chemical utilization rate in the prior art, and apparatus structure is simple simultaneously, and production process is uncomplicated, can greatly improve the transformation efficiency of propylene.
Description of drawings
Fig. 1 is a kind of structural representation that improves the production equipment of propylene conversion that the utility model provides.
In figure: 1-mixed c 4 head tank; The 2-interchanger; The 3-process furnace; The 4-hydrogenator; The 5-condenser; The 6-gas-liquid separation unit; The 7-catalytic rectifying tower; Light carbon four holding tanks of 8-; 9-disproportionation reaction unit; The 10-knockout tower; 11-propylene holding tank.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the utility model and being implemented, but illustrated embodiment is not as to restriction of the present utility model.
The utility model provides a kind of production equipment that improves propylene conversion, and as shown in Figure 1, this production equipment comprises hydrogenator 4, catalytic rectifying tower 7, disproportionation reaction unit 9 etc.
After liquid phase feed in mixed c 4 head tank 1 is boosted by fresh feed pump, carry out heat exchange by interchanger 2, mutually carry out heat exchange with the hydrogenation reaction product after hydrogenation reaction, then by process furnace 3 heating reach temperature required after, opening for feed by hydrogenator enters in hydrogenator 4, carries out hydrogenation reaction in the presence of catalyzer.Material composition in mixed c 4 carries out selective hydrogenation, is become monoolefine such as wherein divinyl, alkynes etc. by the hydrogenation of selectivity.The reactant that obtains after hydrogenation reaction flows out by the discharge port of hydrogenator, and carry out heat exchange through interchanger 2, and then carry out cooling through condenser 5, finally enter gas-liquid separation unit 6 and carry out gas-liquid separation, wherein in the gaseous phase outlet of gas-liquid separation unit, out gas phase enters in hydrogenator by gas feed after by compressor compresses again.the liquid-phase outlet of gas-liquid separation unit is by the control of control valve, carries out heat exchange together with the charging of a part of and former mixed c 4, and the entrance by hydrogenator reenters in hydrogenator 4 and reacts, another part enters next catalytic rectifying tower 7, in catalytic rectifying tower 7, butene-1 tautomerizes to butene-2, tower top separation simultaneously obtains light carbon four, collect by light carbon four holding tanks 8, the tower reactor separation obtains heavy carbon four, heavy carbon four enters in disproportionation reaction unit 9, carry out disproportionation reaction in the presence of catalyzer, butene-2 wherein, the compositions such as ethene carry out disproportionation reaction and produce propylene, product is carried out separating by knockout tower 10, wherein separating the propylene that obtains enters in propylene holding tank 11, unreacted ethene, mixed c 4 and other one-tenth grade and return in hydrogenator 4, carry out hydrogenation reaction together with the raw material mixed c 4.
The production equipment of the raising propylene conversion that the utility model provides, its Raw mixed c 4 obtain the product propylene after by selective hydrogenation, catalytic distillation, disproportionation reaction, product purification, have greatly improved the transformation efficiency of propylene.It is cooling that mutual heat exchange is carried out in raw material in hydrogenation process and discharging simultaneously, saved the energy.Adopt the catalytic bed regeneration techniques in hydrogenator, can improve the working efficiency of reactor.Utilizing the sigmatropic reaction of olefinic double bonds is costly alkene being worth lower conversion of olefines.The utility model directly always be converted into the petroleum chemicals of high additive value as the oil liquefied gas of fuel, not only improves quality and the output of propylene, does one's utmost to fill up the demand gap of domestic market, has good economic benefit.Compare with traditional production of propylene technology, the plant investment of conversion of olefines is far below other technology, and energy consumption (every kg propylene 1900kcal) is only traditional petroleum cracking energy consumption half, has significant advantage.Improved simultaneously the security of production of propylene, for local environmental protection and public safety are removed a hidden danger, more can contribute again for local economic development, profits tax increase.
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and protection domain of the present utility model is not limited to this.Being equal to that those skilled in the art do on the utility model basis substitutes or conversion, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (2)
1. production equipment that improves propylene conversion, it is characterized in that: comprise the mixed c 4 head tank, this mixed c 4 head tank passes through interchanger in turn, process furnace is connected with the opening for feed of hydrogenator, the discharge port of this hydrogenator connects condenser by described interchanger, this condenser connects gas-liquid separation unit, wherein connect the gas inlet of hydrogenator in the gaseous phase outlet of gas-liquid separation unit by compressor, the liquid-phase outlet of gas-liquid separation unit connects the opening for feed of catalytic rectifying tower, the tower top outlet of catalytic rectifying tower connects light carbon four holding tanks, the tower reactor outlet of catalytic rectifying tower connects the opening for feed of disproportionation reaction unit, the discharge port of disproportionation reaction unit connects the propylene holding tank by knockout tower.
2. the production equipment of raising propylene conversion according to claim 1, it is characterized in that: the liquid-phase outlet of described gas-liquid separation unit also is connected with the opening for feed of hydrogenator by interchanger, process furnace in turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202512433U CN203269812U (en) | 2013-05-10 | 2013-05-10 | Production device for increasing conversion rate of propylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202512433U CN203269812U (en) | 2013-05-10 | 2013-05-10 | Production device for increasing conversion rate of propylene |
Publications (1)
| Publication Number | Publication Date |
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| CN203269812U true CN203269812U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013202512433U Expired - Fee Related CN203269812U (en) | 2013-05-10 | 2013-05-10 | Production device for increasing conversion rate of propylene |
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| Country | Link |
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| CN (1) | CN203269812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112759500A (en) * | 2019-10-21 | 2021-05-07 | 中国石油化工股份有限公司 | Method for producing propylene by using carbon tetrahydrocarbon |
-
2013
- 2013-05-10 CN CN2013202512433U patent/CN203269812U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112759500A (en) * | 2019-10-21 | 2021-05-07 | 中国石油化工股份有限公司 | Method for producing propylene by using carbon tetrahydrocarbon |
| CN112759500B (en) * | 2019-10-21 | 2023-04-07 | 中国石油化工股份有限公司 | Method for producing propylene by using carbon tetrahydrocarbon |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20190510 |
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| CF01 | Termination of patent right due to non-payment of annual fee |