CN201454511U - Pervaporation-reaction coupling device for preparing dimethyl adipate - Google Patents
Pervaporation-reaction coupling device for preparing dimethyl adipate Download PDFInfo
- Publication number
- CN201454511U CN201454511U CN2009201100069U CN200920110006U CN201454511U CN 201454511 U CN201454511 U CN 201454511U CN 2009201100069 U CN2009201100069 U CN 2009201100069U CN 200920110006 U CN200920110006 U CN 200920110006U CN 201454511 U CN201454511 U CN 201454511U
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- membrane device
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- infiltrating
- pervaporation
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Abstract
The utility model relates to a pervaporation-reaction coupling device for preparing dimethyl adipate, comprising a reactor, a pervaporation membrane device, a transfer pump, a vacuum pump and a cold trap, wherein the top part of the reactor is provided with a raw material inlet two sides of which are respectively provided with a methanol inlet and a reaction liquid outlet connected with the input end of the transfer pump, the output end of the transfer pump is connected with a lateral inlet of feed liquid of the pervaporation membrane device, and the lateral outlet of the feed liquid of the pervaporation membrane device is arranged at the tail end of the feed liquid side and is communicated with the methanol inlet of the reactor, the transmission lateral outlet of the pervaporation is arranged at the bottom part of the pervaporation membrane device and is connected with the input end of the U-shaped tube of the cold trap, the U-shaped tube tail end of the cold trap is connected with the vacuum pump, the raw material inlet at the top part of the reactor is provided with a thermometer, and a differential gage is arranged on a connecting tube for connecting the transmission lateral outlet of the pervaporation membrane device and the input end of the U-shaped tube in the cold trap. The invention improves the conversion rate to be over 95%, increases the utilization rate of raw materials, and lowers the energy consumption.
Description
Technical field
The utility model relates to a kind of infiltration evaporation-reaction coupling device that is prepared dimethyl adipate by adipic acid/methyl alcohol.
Background technology
Dimethyl adipate is the intermediate products of synthetic important organic matter hexylene glycol.With adipic acid and methyl alcohol is raw material, under the catalytic action of acid, and Dimethyl Adipate Catalyzed, its reaction equation is:
HOOC(CH
2)
4COOH+2CH
3OH→CH
3OOC(CH
2)
4COOCH
3+2H
2O
When reaction reached balance, as if the water of not removing in the product, reaction conversion ratio was restricted, and raw material also is not fully utilized.Therefore need take some effective ways to remove moisture content in the reactant liquor.
The utility model content
The purpose of this utility model is that a kind of to utilize the infiltration evaporation membrane technology to remove in the organic liquid institute moisture in design, with this technology and esterification coupling, the water that course of reaction is generated can in time remove, thereby destroyed molecular balance, improved the infiltration evaporation-reaction coupling device of the preparation dimethyl adipate of reaction conversion ratio.
The infiltration evaporation of preparation dimethyl adipate described in the utility model-reaction coupling device is made of reactor, infiltrating and vaporizing membrane device, delivery pump, vavuum pump and cold-trap; Reactor head is provided with the feed(raw material)inlet, the both sides, feed(raw material)inlet are respectively equipped with methanol inlet and reactant liquor outlet, the reactant liquor outlet connects the delivery pump input, the delivery pump output is connected with the feed liquid side-entrance of infiltrating and vaporizing membrane device, the feed liquid side outlet of infiltrating and vaporizing membrane device is located at feed liquid side end, be communicated with the methanol inlet of reactor by pipeline, the infiltrating and vaporizing membrane device see through the bottom that side outlet is located at the infiltrating and vaporizing membrane device, be connected with the U-shaped pipe input in the cold-trap, U-shaped pipe in the cold-trap is terminal to be connected with vavuum pump, thermometer is equipped with in feed(raw material)inlet in reactor head, seeing through on the U-shaped pipe input tube connector in side outlet and the cold-trap of infiltrating and vaporizing membrane device differential manometer is housed.
Add the adipic acid and the methyl alcohol of preparation according to a certain percentage in reactor, and add acid as catalyst, heating up begins reaction.Utilize pump that reaction solution constantly is delivered to the feed liquid side of infiltrating and vaporizing membrane device simultaneously, utilize the preferential water permeability of film, the water in the feed liquid is separated continuously, stride the see through side of membrane mass transfer to film.Film is seen through side joint go into the vacuum collecting system, see through only moisture, the methyl alcohol of thing, and water content is higher than reactant liquor far away, promptly separable through the conventional distillation process, reclaim the methyl alcohol that sees through film with water and refill in the feed liquid, supply the methyl alcohol that loses in the feed liquid.
Can constantly produce water in adipic acid/methanol esterification reaction; And as product, the existence of water in reactant liquor can influence last conversion ratio, and its equilibrium conversion is less than 70%.Traditional esterification technique is restricted by this, and utilization ratio of raw materials can not reach very high degree; In order to improve conversion ratio, need to introduce the water that a large amount of gasified methanols produce with removal, thereby greatly increased energy consumption.In order to improve conversion ratio, increase raw material availability, to cut down the consumption of energy, the present invention utilizes the infiltration evaporation technology, under the prerequisite that cuts down the consumption of energy greatly, constantly remove the water that produces in adipic acid/methanol esterification reaction, promote reaction forward to carry out, thereby improve final conversion ratio (can reach more than 95%).
Description of drawings
Fig. 1 infiltration evaporation-reaction coupling device schematic diagram.
Wherein: 1, methyl alcohol import 2, thermometer 3, delivery pump 4, infiltrating and vaporizing membrane device 5, differential manometer 6, cold-trap 7, U-shaped pipe 8, vavuum pump 9, reactor
The specific embodiment
Detailed in addition to the infiltration evaporation-reaction coupling device structure of preparation dimethyl adipate described in the utility model with reference to the accompanying drawings below explanation.
The infiltration evaporation of preparation dimethyl adipate described in the utility model-reaction coupling device is made of reactor 9, infiltrating and vaporizing membrane device 4, delivery pump 3, vavuum pump 8 and cold-trap 6; Reactor 9 tops are provided with the feed(raw material)inlet, the both sides, feed(raw material)inlet are respectively equipped with methanol inlet 1 and reactant liquor outlet, the reactant liquor outlet connects delivery pump 3 inputs, delivery pump 3 outputs are connected with the feed liquid side-entrance of infiltrating and vaporizing membrane device 4, the feed liquid side outlet of infiltrating and vaporizing membrane device is located at feed liquid side end, be communicated with the methanol inlet 1 of reactor 9 by pipeline, the infiltrating and vaporizing membrane device see through the bottom that side outlet is located at the infiltrating and vaporizing membrane device, be connected with U-shaped pipe 7 inputs in the cold-trap 6, U-shaped pipe 7 ends in the cold-trap are connected with vavuum pump 8, in the feed(raw material)inlet of reactor head thermometer 2 is housed, differential manometer 5 is housed seeing through on the U-shaped pipe input tube connector in side outlet and the cold-trap of infiltrating and vaporizing membrane device.
Claims (1)
1. infiltration evaporation-reaction the coupling device for preparing dimethyl adipate is made of reactor, infiltrating and vaporizing membrane device, delivery pump, vavuum pump and cold-trap; It is characterized in that: reactor head is provided with the feed(raw material)inlet, the both sides, feed(raw material)inlet are respectively equipped with methanol inlet and reactant liquor outlet, the reactant liquor outlet connects the delivery pump input, the delivery pump output is connected with the feed liquid side-entrance of infiltrating and vaporizing membrane device, the feed liquid side outlet of infiltrating and vaporizing membrane device is located at feed liquid side end, be communicated with the methanol inlet of reactor by pipeline, the infiltrating and vaporizing membrane device see through the bottom that side outlet is located at the infiltrating and vaporizing membrane device, be connected with the U-shaped pipe input in the cold-trap, U-shaped pipe in the cold-trap is terminal to be connected with vavuum pump, thermometer is equipped with in feed(raw material)inlet in reactor head, seeing through on the U-shaped pipe input tube connector in side outlet and the cold-trap of infiltrating and vaporizing membrane device differential manometer is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201100069U CN201454511U (en) | 2009-07-03 | 2009-07-03 | Pervaporation-reaction coupling device for preparing dimethyl adipate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201100069U CN201454511U (en) | 2009-07-03 | 2009-07-03 | Pervaporation-reaction coupling device for preparing dimethyl adipate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201454511U true CN201454511U (en) | 2010-05-12 |
Family
ID=42381856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201100069U Expired - Lifetime CN201454511U (en) | 2009-07-03 | 2009-07-03 | Pervaporation-reaction coupling device for preparing dimethyl adipate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201454511U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898302A (en) * | 2011-07-26 | 2013-01-30 | 株式会社日立工业设备技术 | Water separating system |
| CN107441938A (en) * | 2017-08-18 | 2017-12-08 | 合肥丰洁生物科技有限公司 | A kind of infiltration evaporation film separation system |
| CN109776314A (en) * | 2019-01-31 | 2019-05-21 | 新昌县泰如科技有限公司 | A kind of preparation method of cinnamate |
| CN111072473A (en) * | 2019-12-18 | 2020-04-28 | 潍坊科麦化工有限公司 | Preparation method of dimethyl adipate |
| WO2023174455A1 (en) * | 2022-03-15 | 2023-09-21 | Universidad Pedagogica Y Tecnologica De Colombia | Pervaporation equipment with a circular membrane |
-
2009
- 2009-07-03 CN CN2009201100069U patent/CN201454511U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898302A (en) * | 2011-07-26 | 2013-01-30 | 株式会社日立工业设备技术 | Water separating system |
| CN107441938A (en) * | 2017-08-18 | 2017-12-08 | 合肥丰洁生物科技有限公司 | A kind of infiltration evaporation film separation system |
| CN109776314A (en) * | 2019-01-31 | 2019-05-21 | 新昌县泰如科技有限公司 | A kind of preparation method of cinnamate |
| CN109776314B (en) * | 2019-01-31 | 2021-11-12 | 新昌县泰如科技有限公司 | Preparation method of cinnamate |
| CN111072473A (en) * | 2019-12-18 | 2020-04-28 | 潍坊科麦化工有限公司 | Preparation method of dimethyl adipate |
| WO2023174455A1 (en) * | 2022-03-15 | 2023-09-21 | Universidad Pedagogica Y Tecnologica De Colombia | Pervaporation equipment with a circular membrane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |