CN202116468U - Device for producing methyl acetoacetate continuously - Google Patents
Device for producing methyl acetoacetate continuously Download PDFInfo
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- CN202116468U CN202116468U CN2011201975674U CN201120197567U CN202116468U CN 202116468 U CN202116468 U CN 202116468U CN 2011201975674 U CN2011201975674 U CN 2011201975674U CN 201120197567 U CN201120197567 U CN 201120197567U CN 202116468 U CN202116468 U CN 202116468U
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- tower
- heat insulation
- rectifying
- methyl acetoacetate
- kettle
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Abstract
The utility model discloses a device for producing methyl acetoacetate continuously, which relates to the technology fields of chemical production, kettle-type reaction and product rectification. The device comprises a reaction kettle (1), a heat insulation kettle (2), a heat insulation transit groove (3) and a rectifying tower (4), wherein the reaction kettle (1) is connected with the heat insulation kettle (2), the heat insulation kettle (2) is connected with the heat insulation transit groove (3), and the lower end of the heat insulation groove (3) is connected with the middle part of the rectifying tower (4) by a pump and a valve. In the utility model, the esterification section is converted to the continuous esterification, so that the working efficiency is improved, and the capacity is greatly improved; after the esterification, the methyl acetoacetate directly goes into the rectifying tower to be heated without temperature reduction, therefore, part of the steam energy consumption can be reduced; the rectifying section is converted into a set of tower, and high-boiling-point substance, low-boiling-point substance and the end product can be formed at the same time, thereby saving the equipment investment; the rectifying is carried out in one tower, so that the energy consumption of steam can be reduced, the operation is easy to control, and the product with high content can be obtained more easily.
Description
Technical field:
The utility model relates to Chemical Manufacture, still reaction and product rectification process field, is specifically related to a kind of device that methyl acetoacetate is produced that carries out continuously.
Background technology:
Along with scientific-technical progress, the purposes of methyl acetoacetate is constantly opened up, and many derived product all are present domestic fine-chemical intermediate or the chemical that has very much development prospect, accelerates the methyl acetoacetate exploitation and produces very necessity.Methyl acetoacetate belongs to domestic has certain throughput, but the fine chemical material that quality and quantity all can not satisfy the demands.Especially many enterprise product quality can not satisfy the derived product demand, and it is one of ketene dimer downstream series main products, and is of many uses, the huge market demand.Because in recent years; The required acetic acid cost of material of domestic production ketene dimer declines to a great extent; The methyl acetoacetate cost also decreases, and the high-quality import methyl acetoacetate of originally domestic part progressively withdraws from the home market, and adding domestic production methyl acetoacetate production capacity progressively increases; Client's the demand and the competition in market all require to improve the content and the quality of methyl acetoacetate, reach international standards.
In the existing methyl acetoacetate production process because device structure, esterification workshop section be between segmentation throw in the material reaction, reaction also need be lowered the temperature after finishing, inefficiency, production capacity is low, the steam energy consumption high; Its rectifying workshop section adopts the high and low two cover towers that boil to accomplish, and facility investment is high, operation is wayward, product content is not high.
The utility model content:
The purpose of the utility model provides a kind of device that methyl acetoacetate is produced that carries out continuously, and it changes esterification workshop section into continuous esterification, increases work efficiency; Production capacity improves greatly; Do not need cooling after reaction finishes, directly get in the rectifying tower and heat up, reduce part steam energy consumption; Rectifying workshop section changes a cover tower into and goes out high and low thing and the finished product of boiling simultaneously, saves facility investment, rectifying in a tower, and the energy consumption of minimizing steam is easy to control in the operation, and high-load product more is easy to get.
In order to solve the existing problem of background technology; The utility model is to adopt following technical scheme: it comprises turn trough and rectifying tower in reaction kettle, insulation still, the insulation; Reaction kettle is connected with the insulation still; Turn trough is connected in being incubated still and being incubated, and the turn trough lower end is connected with the rectifying tower middle part with valve through pump in the insulation.
Described reaction kettle is connected through upflow tube with the insulation still, and is connected with valve on this upflow tube.
Described rectifying tower middle part is an opening for feed, and cat head is for lifting one's head the rim of the mouth, and the tower middle and upper part is a product outlet, is row's residue mouth at the bottom of the tower.
The principle of work of the utility model is: in reaction kettle, put into ethyl ester methyl acetate finished product as the still bed material, in reaction kettle, drip DK and methyl alcohol (containing catalyzer one) simultaneously, the reacting kettle jacketing cooling; When reaction kettle be added drop-wise to a certain amount of after, begin to the insulation still in overflow (adding catalyzer two) from upflow tube, when the insulation still reach a certain amount of after; Methyl acetoacetate in the insulation still is overflow turn trough in insulation while being incubated; Squeeze into rectifying tower to thick ethyl ester methyl acetate by turn trough in the insulation with pump, rectifying tower is charging from tower, and cat head goes out the chieftain; The tower middle and upper part goes out Cheng Kou, row's residue at the bottom of the tower.
The utility model changes esterification workshop section into continuous esterification, increases work efficiency, and production capacity improves greatly, does not need cooling after reaction finishes, and directly gets in the rectifying tower and heats up, and reduces part steam energy consumption; Rectifying workshop section changes a cover tower into and goes out high and low thing and the finished product of boiling simultaneously, saves facility investment, rectifying in a tower, and the energy consumption of minimizing steam is easy to control in the operation, and high-load product more is easy to get.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Embodiment:
With reference to Fig. 1; This embodiment adopts following technical scheme: it comprises turn trough 3 and rectifying tower 4 in reaction kettle 1, insulation still 2, the insulation; Reaction kettle 1 is connected with insulation still 2, and turn trough 3 is connected in being incubated still 2 and being incubated, and turn trough 3 lower ends are connected with rectifying tower 4 middle parts with valve through pump in the insulation.
Described reaction kettle 1 is connected through upflow tube with insulation still 2, and is connected with valve on this upflow tube.
Described rectifying tower 4 middle parts are opening for feed, and cat head is for lifting one's head the rim of the mouth, and the tower middle and upper part is a product outlet, are row's residue mouth at the bottom of the tower.
The principle of work of this embodiment is: in reaction kettle 1, put into ethyl ester methyl acetate finished product as the still bed material, in reaction kettle 1, drip DK and methyl alcohol (containing catalyzer one) simultaneously, the cooling of reaction kettle 1 chuck; When reaction kettle 1 be added drop-wise to a certain amount of after, begin overflow (adding catalyzer two) in insulation still 2 from upflow tube, when be incubated still 2 reach a certain amount of after; Methyl acetoacetate in the insulation still 2 is overflow turn trough 3 in insulation while being incubated; Squeeze into rectifying tower 4 to thick ethyl ester methyl acetate by turn trough 3 usefulness pumps in the insulation, rectifying tower 4 charging from tower, cat head goes out the chieftain; The tower middle and upper part goes out Cheng Kou, row's residue at the bottom of the tower.
This embodiment changes esterification workshop section into continuous esterification, increases work efficiency, and production capacity improves greatly, does not need cooling after reaction finishes, and directly gets in the rectifying tower and heats up, and reduces part steam energy consumption; Rectifying workshop section changes a cover tower into and goes out high and low thing and the finished product of boiling simultaneously, saves facility investment, rectifying in a tower, and the energy consumption of minimizing steam is easy to control in the operation, and high-load product more is easy to get.
Claims (3)
1. one kind is carried out the device that methyl acetoacetate is produced continuously; It is characterized in that it comprises turn trough (3) and rectifying tower (4) in reaction kettle (1), insulation still (2), the insulation; Reaction kettle (1) is connected with insulation still (2); Turn trough (3) is connected in being incubated still (2) and being incubated, and turn trough in the insulation (3) lower end is connected with rectifying tower (4) middle part with valve through pump.
2. a kind of device that methyl acetoacetate is produced that carries out continuously according to claim 1 is characterized in that described reaction kettle (1) is connected through upflow tube with insulation still (2), and is connected with valve on this upflow tube.
3. a kind of device that methyl acetoacetate is produced that carries out continuously according to claim 1 is characterized in that described rectifying tower (4) middle part is opening for feed, and cat head is for lifting one's head the rim of the mouth, and the tower middle and upper part is a product outlet, is row's residue mouth at the bottom of the tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201975674U CN202116468U (en) | 2011-06-09 | 2011-06-09 | Device for producing methyl acetoacetate continuously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201975674U CN202116468U (en) | 2011-06-09 | 2011-06-09 | Device for producing methyl acetoacetate continuously |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202116468U true CN202116468U (en) | 2012-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201975674U Expired - Fee Related CN202116468U (en) | 2011-06-09 | 2011-06-09 | Device for producing methyl acetoacetate continuously |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202116468U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864616A (en) * | 2014-03-11 | 2014-06-18 | 南京师范大学 | Method for preparing methyl acetoacetate |
| CN104262153A (en) * | 2014-08-27 | 2015-01-07 | 江苏天成生化制品有限公司 | Technology method capable of continuously carrying out methyl acetoacetate production |
| CN104292105A (en) * | 2014-09-27 | 2015-01-21 | 安徽金禾实业股份有限公司 | Method for producing methyl acetoacetate by employing continuous process |
| CN105384631A (en) * | 2015-11-24 | 2016-03-09 | 江苏天成生化制品有限公司 | Process of continuously producing methyl acetoacetate |
| CN110292894A (en) * | 2018-03-21 | 2019-10-01 | 南通醋酸化工股份有限公司 | A kind of tubular type continuous flow reaction unit and the method for preparing tert-butyl acetoacetate |
-
2011
- 2011-06-09 CN CN2011201975674U patent/CN202116468U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864616A (en) * | 2014-03-11 | 2014-06-18 | 南京师范大学 | Method for preparing methyl acetoacetate |
| CN103864616B (en) * | 2014-03-11 | 2015-09-30 | 南京师范大学 | A kind of method preparing methyl acetoacetate |
| CN104262153A (en) * | 2014-08-27 | 2015-01-07 | 江苏天成生化制品有限公司 | Technology method capable of continuously carrying out methyl acetoacetate production |
| CN104292105A (en) * | 2014-09-27 | 2015-01-21 | 安徽金禾实业股份有限公司 | Method for producing methyl acetoacetate by employing continuous process |
| CN105384631A (en) * | 2015-11-24 | 2016-03-09 | 江苏天成生化制品有限公司 | Process of continuously producing methyl acetoacetate |
| CN110292894A (en) * | 2018-03-21 | 2019-10-01 | 南通醋酸化工股份有限公司 | A kind of tubular type continuous flow reaction unit and the method for preparing tert-butyl acetoacetate |
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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: 20120118 Termination date: 20170609 |
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| CF01 | Termination of patent right due to non-payment of annual fee |