CN212282917U - System for separating and recovering methanol as by-product of dimethylaminoethyl acrylate - Google Patents
System for separating and recovering methanol as by-product of dimethylaminoethyl acrylate Download PDFInfo
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- CN212282917U CN212282917U CN202020564689.1U CN202020564689U CN212282917U CN 212282917 U CN212282917 U CN 212282917U CN 202020564689 U CN202020564689 U CN 202020564689U CN 212282917 U CN212282917 U CN 212282917U
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Abstract
The utility model relates to a dimethyl amino ethyl acrylate accessory substance methyl alcohol separation recovery system, including the condenser, the storage tank is collected to methyl alcohol, the reation kettle top of dimethyl amino ethyl acrylate connects the rectifying column, the rectifying column top connects the condenser, the condenser bottom connects to the condensate holding vessel, divide two the tunnel behind the biography material pipe of condensate holding vessel bottom tape conveying pump, connect all the way back to the rectifying column top, another way connects the settler, connect the salt water pipe on the settler, the settler bottom connects the methyl alcohol holding vessel through the buffer tank, the settler middle part connects the n-hexane holding vessel, the n-hexane holding vessel connects back reation kettle through the return pump. The device has a simple structure, can effectively separate the byproduct methanol in the production of dimethylaminoethyl acrylate, gives consideration to the recovery of normal hexane, has low energy consumption, and is beneficial to reducing the industrial production cost.
Description
Technical Field
The utility model belongs to the technical field of organic matter separation recovery recycles, concretely relates to accessory substance methyl alcohol separation recovery system in dimethyl amino ethyl acrylate production process.
Background
The dimethylaminoethyl acrylate is an important raw material in chemical production and has wide application, the existing production process can cause a large amount of byproduct methanol to be generated in the production process of the dimethylaminoethyl acrylate, and the methanol is colorless, flammable and toxic liquid with easily volatile alcohol smell, so that the direct discharge can cause environmental pollution and great waste. At present, a direct rectification method is mainly adopted for separating the byproduct methanol, but the methanol has high boiling point, and can be separated from the system only by consuming a large amount of steam and high rectification temperature, so the method has the defects of poor separation effect, high energy consumption, high cost, high operation risk coefficient and the like.
Disclosure of Invention
The utility model aims at the above problem, provide a simple structure, can effectively separate dimethyl amino ethyl acrylate production byproduct methyl alcohol, compromise the n-hexane and retrieve, the energy consumption is low, is favorable to reducing industrial production cost's dimethyl amino ethyl acrylate byproduct methyl alcohol separation recovery system.
The utility model adopts the technical proposal that: the utility model provides a dimethyl amino ethyl acrylate by-product methanol separation recovery system, includes condenser, methyl alcohol collection storage tank, its characterized in that: the top of a reaction kettle of the dimethylaminoethyl acrylate is connected with a rectifying tower, the top of the rectifying tower is connected with a condenser, the bottom of the condenser is connected with a condensate collecting tank, the bottom of the condensate collecting tank is connected with a material conveying pipe with a material conveying pump and then divided into two paths, one path is connected to the top of the rectifying tower, the other path is connected with a settler, the settler is connected with a brine pipe, the bottom of the settler is connected with a methanol collecting storage tank through a buffer tank, the middle part of the settler is connected with a normal hexane collecting tank, and the normal hexane collecting tank is connected back to the reaction kettle.
Furthermore, a polymerization inhibitor adding groove is connected to the top of the rectifying tower.
Further, the rectifying tower is a four-stage packing rectifying tower.
Further, the condenser is a two-stage series condenser.
The rectifying tower of the separation and recovery device of the utility model is a four-stage packing rectifying tower, a polymerization inhibitor adding groove is arranged on the tower top and is used for adding polymerization inhibitor, methanol-n-hexane azeotrope is prevented from polymerizing in the reaction process, the rectifying tower is connected with a first-stage condenser, a second-stage condenser, a condensate collecting tank and a material conveying pump sequentially through pipelines, the condensate is divided into two paths through the material conveying pump, one path is returned to be connected to the top of the rectifying tower, the temperature at the tower top is controlled by full reflux, the other path is connected with a settler, and the settler is connected with a brine pipe to feed process brine simultaneously, further realizing the settling extraction separation of the normal hexane and the methanol, pumping the upper-layer liquid of the settler into a normal hexane collecting tank, and pumping the liquid into the reaction kettle through a return pump, injecting the liquid at the lower layer of the settler into a methanol buffer tank through a pipeline, and finally collecting the liquid in a methanol collecting storage tank, thereby finally realizing the separation, recovery and reutilization of the azeotrope of the normal hexane and the methanol. The addition of brine to the settler instead of process water first facilitates the settling separation of the upper and lower layer liquids and then the washing with brine reduces the water content in the recovered n-hexane to below 500ppm because the probability of catalyst deactivation in the reaction system is greatly reduced. The device has reasonable design, can recycle the byproduct methanol with high efficiency and low consumption, reduces the environmental pollution and reduces the consumption of energy and raw materials.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the system comprises a reaction kettle 1, a rectifying tower 2, a polymerization inhibitor adding groove 3, a first condenser 4, a second condenser 5, a condensate recovery tank 6, a material conveying pipe 7, a material conveying pump 8, a return pipe 9, a settling pipe 10, a settler 11, a brine pipe 12, a methanol buffer tank 13, a methanol collection storage tank 14, a normal hexane collection tank 15 and a return pump 16.
Detailed Description
The following further description is made in conjunction with the accompanying drawings and examples.
FIG. 1 shows: a system for separating and recovering dimethyl aminoethyl acrylate byproduct methanol comprises a reaction kettle 1, a rectifying tower 2, a polymerization inhibitor adding groove 3, a first condenser 4, a second condenser 5, a condensate recovering tank 6, a material conveying pipe 7, a material conveying pump 8, a return pipe 9, a settling pipe 10, a settling vessel 11, a brine pipe 12, a methanol buffer tank 13, a methanol collecting storage tank 14, a normal hexane collecting tank 15 and a return pump 16. The part of a reaction kettle 1 of the dimethylaminoethyl acrylate is connected with a rectifying tower 2, the top of the rectifying tower 2 is connected with a polymerization inhibitor adding groove 3, the rectifying tower is a four-stage filler rectifying tower, the top of the rectifying tower is connected with a first condenser 4, a second condenser 5 and a second cross-over condenser connected with a condensate collecting tank 6, the bottom of the condensate collecting tank 6 is connected with a material conveying pipe 7 with a material conveying pump 8 and then divided into two paths, one path is connected with the top of the rectifying tower through a return pipe 9, the other path is connected with a settling pipe 10, the settling pipe 10 is connected with a settler 11, the settling pipe 10 or the settler 11 is connected with a brine pipe 12, the bottom of the settler 11 is connected with a methanol collecting storage tank 14 through a buffer tank 13, the middle part of the settler 11 is connected with a normal hexane collecting tank 15, and the normal hexane collecting tank.
Claims (4)
1. The utility model provides a dimethyl amino ethyl acrylate by-product methanol separation recovery system, includes condenser, methyl alcohol collection storage tank, its characterized in that: the top of a reaction kettle of the dimethylaminoethyl acrylate is connected with a rectifying tower, the top of the rectifying tower is connected with a condenser, the bottom of the condenser is connected with a condensate collecting tank, the bottom of the condensate collecting tank is connected with a material conveying pipe with a material conveying pump and then divided into two paths, one path is connected to the top of the rectifying tower, the other path is connected with a settler, the settler is connected with a brine pipe, the bottom of the settler is connected with a methanol collecting tank through a buffer tank, the middle of the settler is connected with a normal hexane collecting tank, and the normal hexane collecting tank is connected back to the reaction kettle through a.
2. The system for separating and recovering the methanol as a by-product of dimethylaminoethyl acrylate according to claim 1, which is characterized in that: and the top of the rectifying tower is connected with a polymerization inhibitor adding groove.
3. The system for separating and recovering the methanol as a by-product of dimethylaminoethyl acrylate according to claim 1 or 2, which is characterized in that: the rectifying tower is a four-stage packing rectifying tower.
4. The system for separating and recovering the methanol as a by-product of dimethylaminoethyl acrylate according to claim 1, which is characterized in that: the condenser is a two-stage series condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020564689.1U CN212282917U (en) | 2020-04-16 | 2020-04-16 | System for separating and recovering methanol as by-product of dimethylaminoethyl acrylate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020564689.1U CN212282917U (en) | 2020-04-16 | 2020-04-16 | System for separating and recovering methanol as by-product of dimethylaminoethyl acrylate |
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| CN212282917U true CN212282917U (en) | 2021-01-05 |
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| CN202020564689.1U Active CN212282917U (en) | 2020-04-16 | 2020-04-16 | System for separating and recovering methanol as by-product of dimethylaminoethyl acrylate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113413858A (en) * | 2021-08-23 | 2021-09-21 | 山东蓝湾新材料有限公司 | High molecular polymer intermediate production device and process flow |
| CN114956960A (en) * | 2022-07-01 | 2022-08-30 | 山东蓝湾新材料有限公司 | Method and system for recovering methanol in preparation of dimethylaminoethyl acrylate |
-
2020
- 2020-04-16 CN CN202020564689.1U patent/CN212282917U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113413858A (en) * | 2021-08-23 | 2021-09-21 | 山东蓝湾新材料有限公司 | High molecular polymer intermediate production device and process flow |
| CN114956960A (en) * | 2022-07-01 | 2022-08-30 | 山东蓝湾新材料有限公司 | Method and system for recovering methanol in preparation of dimethylaminoethyl acrylate |
| CN114956960B (en) * | 2022-07-01 | 2023-08-22 | 山东蓝湾新材料有限公司 | Method and system for recycling methanol in preparation of dimethylaminoethyl acrylate |
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