CN206204194U - A kind of device that high-purity N methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration - Google Patents
A kind of device that high-purity N methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration Download PDFInfo
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- CN206204194U CN206204194U CN201621015242.9U CN201621015242U CN206204194U CN 206204194 U CN206204194 U CN 206204194U CN 201621015242 U CN201621015242 U CN 201621015242U CN 206204194 U CN206204194 U CN 206204194U
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- methyl pyrrolidone
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Abstract
A kind of device that high-purity N methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration, including lightness-removing column, vapour dike tower, product tower, Venturi tube, it is characterised in that：Lightness-removing column tower reactor extraction as product tower charging, lightness-removing column side take-off as vapour dike tower charging；The Venturi tube is connected with lightness-removing column tower top, vapour dike column overhead, absorption groove and absorbing liquid cooler respectively；The absorbing liquid cooler is connected with groove is absorbed；The product tower is connected with vapor-liquid separation post；The vapor-liquid separation post is connected with N methyl pyrrolidone pans；The product tower tower reactor is provided with the residual pans of kettle.The device has the advantages that low energy consumption, easily-controlled operation, recycles methylamine, non-secondary pollution and can manufacture.
Description
Technical field
The utility model is related to a kind of purification devices of 1-METHYLPYRROLIDONE, more particularly to by the de- amine of rectifying, dehydration
The device of high-purity N-methyl pyrrolidone is obtained, belongs to solvent purifications field.
Background technology
1-METHYLPYRROLIDONE is important industrial chemicals, is a kind of strong and good stability the polar solvent of selectivity, tool
Toxic low, boiling point is high, dissolving power is strong, nonflammable, biodegradable, recoverable, match somebody with somebody using safety and suitable for various
The advantages of square purposes, be widely used in the purifying of aromatic hydrocarbons extraction, acetylene, alkene, alkadienes, the solvent of polyvinylidene fluoride, lithium from
The electrode auxiliary material of sub- battery, synthetic gas desulfurization, lube oil finishing, lubricating oil antifreeze, olefinic extracting agent, indissoluble engineering plastic
Solvent during material polymer, agricultural herbicide, insulating materials, production of integrated circuits, semicon industry precision instrument, wiring board
Clean, PVC tail gas recycles, cleaning agent, color additive, dispersant etc..The solvent of polymer and the medium of polymerisation are also used for,
Such as engineering plastics and aramid fiber.The aspects such as agricultural chemicals, medicine and cleaning agent are also used in addition.
At present, purity requirement of the 1-METHYLPYRROLIDONE industrialized producing technology to 1-METHYLPYRROLIDONE is very high, and produces
When product are purified, the rectifying device for generally using invests larger, high energy consumption, the difficult control of operation.
Utility model content
The utility model is in view of the shortcomings of the prior art, there is provided one kind by the de- amine of rectifying, dehydration obtain high-purity N-
The device of methyl pyrrolidone.
A kind of device that high-purity N-methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration, including lightness-removing column, vapour dike tower,
Product tower, Venturi tube, it is characterised in that：The Venturi tube respectively with lightness-removing column tower top, vapour dike column overhead, absorb groove and suction
Liquid cooler is received to be connected；The absorbing liquid cooler is connected with groove is absorbed；The product tower is connected with vapor-liquid separation post；The vapour
Liquid splitter is connected with 1-METHYLPYRROLIDONE pans；The product tower tower reactor is provided with the residual pans of kettle.
Lightness-removing column tower reactor extraction as product tower charging, lightness-removing column side take-off as vapour dike tower charging.
The lightness-removing column tower reactor is provided with the first reboiler, and lightness-removing column tower top is provided with segregator.
The product tower tower reactor is provided with the 3rd reboiler, and tower top is provided with the 3rd condenser.
Reactor product cooler is connected between the vapor-liquid separation post and 1-METHYLPYRROLIDONE pans.
The lightness-removing column is provided with charging aperture, side line discharge.
The product tower is provided with charging aperture, side line discharge.
The vapour dike tower tower reactor connects sewage treatment plant.
The product column overhead connects sewage treatment plant.
The absorption trench bottom coupled reaction workshop section.
A kind of method for obtaining high-purity N-methyl pyrrolidone by the de- amine of rectifying, dehydration, will contain 1-METHYLPYRROLIDONE
Crude product is fed from lightness-removing column middle and upper part, and lightness-removing column tower reactor is produced as the charging of product tower, and is adopted in product tower side line gas phase
Go out qualified 1-METHYLPYRROLIDONE；Lightness-removing column side take-off as vapour dike tower charging, the method comprises the following steps：
(1) crude product containing 1-METHYLPYRROLIDONE enters lightness-removing column, and the material for falling lightness-removing column tower reactor adds through the first reboiler
After heat, the highly concentrated methylamine gas phase for rising to lightness-removing column tower top is acted on through segregator, and the gas phase of extraction enters Venturi tube；
(2) lightness-removing column side take-off enters vapour dike tower, and text is entered into the aqueous amine mixture gas phase in the material of vapour dike tower
Venturi；
(3) the material flow through venturi in entering Venturi tube in step (1) and (2) enters absorption groove after absorbing, reach
To required methylamine concentration when, be then back to reaction workshop section recycle；
(4) the remaining highly concentrated 1-METHYLPYRROLIDONE of lightness-removing column tower reactor enters product tower, and the material into product tower is through the 3rd
After reboiler heating, the gas phase for rising to product column overhead is condensed into liquid through the 3rd condenser, and the extraction of tower reactor gas phase is qualified
1-METHYLPYRROLIDONE, the drop of entrainment is taken off through vapor-liquid separation post, obtains high-purity gas phase 1-METHYLPYRROLIDONE product.
Further, in the step (2), the liquid phase material in vapour dike tower enters sewage treatment plant.
Further, in the step (4), high-purity gas phase 1-METHYLPYRROLIDONE product is condensed into through product condenser
Enter 1-METHYLPYRROLIDONE pans after liquid.
Further, in the step (4), the liquid condensed through the 3rd condenser enters sewage treatment plant.
Further, in the step (4), product tower tower reactor liquid phase enters the residual pans of kettle.
The beneficial effects of the utility model are：Purification devices of the present utility model produce mass concentration using lightness-removing column>
90% 1-METHYLPYRROLIDONE material, using the 1-METHYLPYRROLIDONE material as the charging of product tower, in product tower tower reactor
Obtain high purity N-methyl pyrrolidone product, wherein mass concentration >=99.99% of 1-METHYLPYRROLIDONE, water≤
100PPm；In purge process, reclaim methylamine and return to reaction workshop section, reduce pollution and reduces cost；In addition, the purification devices
It is adapted to batch production operation.
Brief description of the drawings
The process chart that Fig. 1 is used for recovery methylamine in the utility model and purification 1-METHYLPYRROLIDONE crude product；
Fig. 2 is to purify the thick process chart for using of highly concentrated 1-METHYLPYRROLIDONE in the utility model.
Wherein, 1, lightness-removing column；2nd, vapour dike tower；3rd, product tower；4th, Venturi tube；5th, groove is absorbed；6th, absorbing liquid cooler；7、
Vapor-liquid separation post；8th, 1-METHYLPYRROLIDONE pans；9th, the residual pans of kettle；10th, the first reboiler；11st, segregator；12nd,
Three reboilers；13rd, the 3rd condenser；14th, reactor product cooler；15th, sewage treatment plant；17th, workshop section is reacted；18th, product storage tank.
Specific embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit scope of the present utility model.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：One kind obtains height by the de- amine of rectifying, dehydration
The device of pure 1-METHYLPYRROLIDONE, including lightness-removing column 1, vapour dike tower 2, product tower 3, Venturi tube 4；The tower reactor of the lightness-removing column 1
Produce as product tower 3 charging, the side take-off of lightness-removing column 1 as vapour dike tower 2 charging；The Venturi tube 4 respectively with it is de-
The light tower top of tower 1, the tower top of vapour dike tower 2, absorption groove 5 are connected with absorbing liquid cooler 6；The absorbing liquid cooler 6 and the absorption phase of groove 5
Even；Reactor product cooler 14 is connected between the vapor-liquid separation post 7 and 1-METHYLPYRROLIDONE pans 8；The product tower 3 and vapour
Liquid splitter 7 is connected；The vapor-liquid separation post 7 is connected with 1-METHYLPYRROLIDONE pans 8；The tower reactor of product tower 3 is provided with
The residual pans 9 of kettle；The lightness-removing column 1 is provided with charging aperture, side line discharge；The product tower 3 is provided with charging aperture, lateral line discharging
Mouthful；The tower reactor of the lightness-removing column 1 is provided with the first reboiler 10, and the tower top of lightness-removing column 1 is provided with segregator 11；The tower reactor of product tower 3 sets
There is the 3rd reboiler 12, tower top is provided with the 3rd condenser 13；The tower reactor of vapour dike tower 2 connects sewage treatment plant 15；The product
The tower top of product tower 3 connects sewage treatment plant 15；The absorption trench bottom coupled reaction workshop section 17；The 1-METHYLPYRROLIDONE connects
By connection product storage tank 18 on tank.
The application method of the device is that will contain 1-METHYLPYRROLIDONE crude product to be fed from lightness-removing column 1, the tower reactor of lightness-removing column 1
Produce as the charging of product tower 3, and qualified 1-METHYLPYRROLIDONE is produced in the gas phase of product tower 3；The side take-off of lightness-removing column 1
Used as the charging of vapour dike tower 2, the method comprises the following steps：
(1) crude product containing 1-METHYLPYRROLIDONE enters lightness-removing column 1, falls the material of the tower reactor of lightness-removing column 1 through the first reboiler
After 10 heating, the highly concentrated methylamine gas phase for rising to the tower top of lightness-removing column 1 is condensed into liquid into Venturi tube 4 through segregator 11；
(2) side take-off of lightness-removing column 1 enters vapour dike tower 2, enters into the aqueous amine mixture gas phase in the material of vapour dike tower 2
Venturi tube 4；
(3) the material flow through venturi 4 in entering Venturi tube 4 in step (1) and (2) enters absorption groove 5 after absorbing,
When reaching the concentration of required methylamine, reaction workshop section 17 is returned；
(4) the remaining highly concentrated 1-METHYLPYRROLIDONE of the tower reactor of lightness-removing column 1 enters product tower 3, and the material into product tower 3 is through the
After three reboiler 12 is heated, the gas phase for rising to the tower top of product tower 3 is condensed into liquid, the extraction of tower reactor gas phase through the 3rd condenser 13
Qualified 1-METHYLPYRROLIDONE, the drop of entrainment is taken off through vapor-liquid separation post 7, is obtained high-purity gas phase 1-METHYLPYRROLIDONE and is produced
Product.
In the utility model, in the step (2), the liquid phase material in vapour dike tower 2 enters sewage treatment plant 15.
In the utility model, in the step (4), high-purity gas phase 1-METHYLPYRROLIDONE product is through reactor product cooler
14 are condensed into and enter 1-METHYLPYRROLIDONE pans 8 after liquid.
In the utility model, in the step (4), the liquid condensed through the 3rd condenser 13 enters sewage disposal work
Section 15.
In the utility model, in the step (4), the tower reactor liquid phase of product tower 3 enters the residual pans 9 of kettle.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all in this practicality
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (6)
1. it is a kind of that amine is taken off by rectifying, the device for obtaining high-purity N-methyl pyrrolidone is dehydrated, including lightness-removing column, vapour dike tower, product
Product tower, Venturi tube, it is characterised in that：The lightness-removing column tower reactor is produced as the charging of product tower, and lightness-removing column side take-off is made
It is the charging of vapour dike tower；The Venturi tube respectively with lightness-removing column tower top, vapour dike column overhead, absorb groove and absorbing liquid cooler phase
Even；The absorbing liquid cooler is connected with groove is absorbed；The product tower is connected with vapor-liquid separation post；The vapor-liquid separation post and N-
Methyl pyrrolidone pans are connected；The product tower tower reactor is provided with the residual pans of kettle.
2. a kind of device that high-purity N-methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration according to claim 1, its
It is characterised by：The lightness-removing column tower reactor is provided with the first reboiler, and tower top is provided with segregator；The product tower tower reactor is provided with the 3rd again
Boiling device, tower top is provided with the 3rd condenser.
3. a kind of device that high-purity N-methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration according to claim 1, its
It is characterised by：Reactor product cooler is connected between the vapor-liquid separation post and 1-METHYLPYRROLIDONE pans.
4. a kind of device that high-purity N-methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration according to claim 1, its
It is characterised by：The lightness-removing column is provided with charging aperture, side line discharge；The product tower is provided with charging aperture, side line discharge.
5. a kind of device that high-purity N-methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration according to claim 1, its
It is characterised by：The vapour dike tower tower reactor connects sewage treatment plant；The product column overhead connects sewage treatment plant.
6. a kind of device that high-purity N-methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration according to claim 1, its
It is characterised by：The absorption trench bottom coupled reaction workshop section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621015242.9U CN206204194U (en) | 2016-08-31 | 2016-08-31 | A kind of device that high-purity N methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621015242.9U CN206204194U (en) | 2016-08-31 | 2016-08-31 | A kind of device that high-purity N methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration |
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| Publication Number | Publication Date |
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| CN206204194U true CN206204194U (en) | 2017-05-31 |
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| CN201621015242.9U Active CN206204194U (en) | 2016-08-31 | 2016-08-31 | A kind of device that high-purity N methyl pyrrolidone is obtained by the de- amine of rectifying, dehydration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110885305A (en) * | 2019-09-25 | 2020-03-17 | 镇江新纳环保材料有限公司 | NMP side draw method |
-
2016
- 2016-08-31 CN CN201621015242.9U patent/CN206204194U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110885305A (en) * | 2019-09-25 | 2020-03-17 | 镇江新纳环保材料有限公司 | NMP side draw method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Chunling Inventor after: Yang Guoju Inventor after: Li Xiaoning Inventor after: Mao Xuefeng Inventor after: Li Xiaogang Inventor after: Yu Xiugang Inventor after: Sun Lixin Inventor before: Zhang Chunling Inventor before: Yang Guoju Inventor before: Li Xiaoning Inventor before: Mao Xuefeng Inventor before: Li Xiaogang Inventor before: Yu Xiugang Inventor before: Zhang Lixin |
|
| CB03 | Change of inventor or designer information |