CN2204197Y - External circulation gas-liquid reactor for ethoxylation reaction - Google Patents
External circulation gas-liquid reactor for ethoxylation reaction Download PDFInfo
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- CN2204197Y CN2204197Y CN 94239522 CN94239522U CN2204197Y CN 2204197 Y CN2204197 Y CN 2204197Y CN 94239522 CN94239522 CN 94239522 CN 94239522 U CN94239522 U CN 94239522U CN 2204197 Y CN2204197 Y CN 2204197Y
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- reactor
- atomizers
- external circulation
- reaction vessel
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Abstract
The utility model relates to an external circulation gas-liquid reactor for ethoxylation reaction, which is composed of a reaction vessel (1), a liquid external circulation loop, atomizers (4), etc., wherein, the atomizers are positioned on the top of the reaction vessel; the external circulation loop is formed by that a circulation pump (2), a heat exchanger (3) and a pipeline are connected; the loop passes from the bottom of the reaction vessel to the atomizers on the top of the reaction vessel; the utility model is characterized in that the atomizers adopt Venturi ejectors. Compared with the prior art, the utility model has the advantages that the production intensity is improved, the space-time yield can reach 0.10 gk (EO) /m 3. s, and in addition, the quantity of the atomizers in the reaction vessel is also correspondingly reduced.
Description
The utility model belongs to a kind of gas-liquid reactor of vapor phase method.
The polyoxyethylene-type non-ionic surface active agent has obtained using widely in all many-sides such as weaving, washing, printing and dyeing, chemical fibre, cosmetics, petrochemical industries with performances such as its good washing, infiltration, dispersion, emulsification, breakdowns of emulsion.Industrial polyoxyethylene-type non-ionic surface active agent mainly by the compound that contains active hydrogen atom in the presence of base catalyst, make by ethoxylation with epoxides.In the prior art, the reactor that is used for ethoxylation mainly contains the stirring reactor that is called as liquid phase method and is called as the outer circulation spray type reactor of vapor phase method.The liquid phase method stirring reactor is epoxides to be fed the liquid phase body react, and this technology is owing to be subjected to the restriction of gas-liquid mass transfer and heat transfer efficiency, and production intensity is lower, and space time yield is no more than 0.01kg(EO)/m
3S and operational danger are bigger, and product quality is also unstable, and color and luster is darker.For this reason, Italian Press Industria company has released vapor phase method outer circulation spray type reactor, and initiator or adduct circulation spraying enter in the gas-phase epoxidation thing, fast Absorption epoxides and reaction with it.This reactor has been strengthened gas-liquid mass transfer, has improved production intensity, and space time yield can reach 0.09kg(EO)/m
3S.Owing to do not need to stir sealing, avoided the leakage of epoxides, reaction heat is removed by external heat exchanger, and stable operation is reliable, and the quality of product and reappearance are also better.
But existing this outer circulation spray type reactor is because atomizer adopts general nozzle, and the efficient of gas-liquid mass transfer is still not very very good, and the reactor domestic demand settles the nozzle of a greater number to meet the demands.
The purpose of this utility model provides a kind of improved outer circulation spray type reactor that is used for ethoxylation, and its structure has been strengthened mass-transfer efficiency more, and production intensity can further improve.
The reactor that the utility model provides is made of reactor, liquid outer circulation loop, atomizer etc., reactor can have heating jacket or in establish coil pipe heat exchanger, atomizer is positioned at the reactor top.The outer circulation loop is formed by circulating pump, heat exchanger and pipeline connection, and the loop passes to the atomizer at top bottom reactor, and its improvement is that atomizer adopts Venturi jet.
During the reactor operation, liquid reaction mixture circulates by the outer circulation loop, nozzle ejection atomizing from Venturi jet, the epoxides of gaseous state enters injector by the side direction suction hole of injector in the still, at the mixer of injector with diffuser fully mixes with reactant mixture and reaction with it, the reaction mixture of atomizing then further reacts with the gaseous state epoxides in reactor.
Because injection stream will be transformed into bubble stream and form and mix vibration in the mixer of Venturi jet, in mixing vibration, gas-liquid two-phase reaches high degree of dispersion, form the very big gas-liquid interface that contacts, thereby mass-transfer efficiency improves greatly.So compared with prior art, advantage of the present utility model is that production intensity strengthens more, and space time yield can reach 0.10kg(EO)/m
3S.In addition, the quantity of atomizer also can correspondingly reduce in the reactor.
Accompanying drawing has been showed an embodiment of the present utility model.
Accompanying drawing is the cross-sectional view of reactor.
Among the embodiment shown in the drawings, reactor 1 has heating jacket, and circulating pump 2, heat exchanger 3 connect formation outer circulation loop by pipeline.The end in outer circulation loop connects with a Venturi jet 4 that is placed in the reactor top, reaction mixture can enter injector 4 ejection atomizing by the outer circulation loop, and the gaseous state epoxides will enter injector from the side direction suction hole 5 of injector and fully mix with reaction mixture and obtain high degree of dispersion in the reactor.
Contain compound bearing active hydrogen (initiator), catalyst and epoxides and all drop in the still by charging aperture 6, vacuum orifice 7 is used for vacuumizing dehydration in the still, and product is discharged by discharging opening 8.
Claims (1)
- A kind of outer circulation gas-liquid reactor that is used for ethoxylation, constitute by reactor, liquid outer circulation loop, atomizer etc., reactor can have heating jacket or in establish coil pipe heat exchanger, atomizer is positioned at the reactor top, the outer circulation loop is formed by circulating pump, heat exchanger and pipeline connection, the loop passes to the atomizer at top bottom reactor, it is characterized in that atomizer is a Venturi jet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94239522 CN2204197Y (en) | 1994-10-25 | 1994-10-25 | External circulation gas-liquid reactor for ethoxylation reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94239522 CN2204197Y (en) | 1994-10-25 | 1994-10-25 | External circulation gas-liquid reactor for ethoxylation reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2204197Y true CN2204197Y (en) | 1995-08-02 |
Family
ID=33846721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94239522 Expired - Fee Related CN2204197Y (en) | 1994-10-25 | 1994-10-25 | External circulation gas-liquid reactor for ethoxylation reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2204197Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225159B (en) * | 2008-01-04 | 2011-08-31 | 张国忠 | Method for producing polyether-type defoaming agent |
| CN102847492A (en) * | 2012-10-16 | 2013-01-02 | 四川国光农化股份有限公司 | Preparation device suitable for gas-liquid reaction |
| CN103055794A (en) * | 2012-12-27 | 2013-04-24 | 山东瑞博龙化工科技股份有限公司 | Double-cone atomization gas-liquid reactor |
| CN103055793A (en) * | 2012-12-27 | 2013-04-24 | 山东瑞博龙化工科技股份有限公司 | Spray pyrolysis device |
| CN101555198B (en) * | 2008-07-10 | 2014-01-15 | 杭州电化集团有限公司 | Synthesis method of isobutyl vinyl ether and device thereof |
| CN103521145A (en) * | 2013-10-25 | 2014-01-22 | 锦州利诺化工科技开发有限公司 | Gas-liquid reaction device under pressure |
| CN105949059A (en) * | 2016-05-28 | 2016-09-21 | 安徽广信农化股份有限公司 | Simple and efficient production method for phenyl chloroformate |
| CN111013498A (en) * | 2019-12-27 | 2020-04-17 | 江苏奥克化学有限公司 | Ethoxylation reaction device and method |
| CN111298754A (en) * | 2020-02-18 | 2020-06-19 | 清华大学 | Reactor and process for continuously producing polycarbonate oligomer |
-
1994
- 1994-10-25 CN CN 94239522 patent/CN2204197Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225159B (en) * | 2008-01-04 | 2011-08-31 | 张国忠 | Method for producing polyether-type defoaming agent |
| CN101555198B (en) * | 2008-07-10 | 2014-01-15 | 杭州电化集团有限公司 | Synthesis method of isobutyl vinyl ether and device thereof |
| CN102847492A (en) * | 2012-10-16 | 2013-01-02 | 四川国光农化股份有限公司 | Preparation device suitable for gas-liquid reaction |
| CN103055794A (en) * | 2012-12-27 | 2013-04-24 | 山东瑞博龙化工科技股份有限公司 | Double-cone atomization gas-liquid reactor |
| CN103055793A (en) * | 2012-12-27 | 2013-04-24 | 山东瑞博龙化工科技股份有限公司 | Spray pyrolysis device |
| CN103521145A (en) * | 2013-10-25 | 2014-01-22 | 锦州利诺化工科技开发有限公司 | Gas-liquid reaction device under pressure |
| CN105949059A (en) * | 2016-05-28 | 2016-09-21 | 安徽广信农化股份有限公司 | Simple and efficient production method for phenyl chloroformate |
| CN111013498A (en) * | 2019-12-27 | 2020-04-17 | 江苏奥克化学有限公司 | Ethoxylation reaction device and method |
| CN111298754A (en) * | 2020-02-18 | 2020-06-19 | 清华大学 | Reactor and process for continuously producing polycarbonate oligomer |
| CN111298754B (en) * | 2020-02-18 | 2024-04-05 | 清华大学 | Reactor and process for continuously producing polycarbonate oligomer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |