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Production device of dimethyl acetylsuccinate

A technology of dimethyl acetosuccinate and production device, which is applied in the field of production devices of dimethyl acetosuccinate, can solve problems such as troublesome operation steps, and achieve the effect of saving labor

Active Publication Date: 2021-07-30
河北彩客新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing dimethyl acetylsuccinate processing equipment is to put the raw materials into the kettle body for reaction in stages, and this operation step is cumbersome

Method used

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  • Production device of dimethyl acetylsuccinate
  • Production device of dimethyl acetylsuccinate
  • Production device of dimethyl acetylsuccinate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: a kind of production device of dimethyl acetylsuccinate, such as figure 1 and figure 2 , including a circular fixing plate 11 arranged on the upper side of the outer wall of the kettle body 1 and a feed pipe 12 arranged at the upper end of the kettle body 1. At this time, the fixing plate 11 can be arranged on the kettle body 1 or on the ground through a column , the fixed plate 11 is fixed with a raw material bottle 13 for placing raw materials, and the raw material bottle 13 is detachably connected with the fixed plate 11. For example, the fixed plate 11 is provided with a ferrule for the raw material bottle 13 to put in. At this time, the raw material bottle 13 is inserted into the In the ferrule, the fixing plate 11 is provided with a receiving box 131 which is located between the adjacent raw material bottles 13 and the opening of the box is facing upwards. The bottom of each receiving box 131 is provided with a vertical communication pipe connected ...

Embodiment 2

[0041] Embodiment 2: a kind of preparation method of dimethyl acetylsuccinate comprises the following preparation steps:

[0042] S1: put maleic anhydride and methanol into an integrated reactor, carry out esterification reaction under the action of a catalyst, and then obtain dimethyl maleate through neutralization and distillation of the integrated reactor;

[0043] S2: Under the action of a catalyst, dimethyl maleate undergoes a high-compression reaction with acetaldehyde, and after distillation and rectification, dimethyl acetylsuccinate is obtained.

[0044] The catalyst in S1 is an acid; the acid is concentrated sulfuric acid or p-toluenesulfonic acid.

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Abstract

The invention discloses a production device of dimethyl acetylsuccinate, and relates to the technical field of fine chemical engineering; the production device can simultaneously and automatically extract and feed various raw materials, and is characterized by comprising a circular fixing plate arranged on the upper side of the outer wall of a kettle body and a feeding pipe arranged at the upper end of the kettle body; raw material bottles used for containing raw materials are fixed to the fixing plate, receiving boxes located between the adjacent raw material bottles are arranged on the fixing plate, box openings of the receiving boxes face upwards, vertical communicating pipes communicated with the feeding pipe are arranged at the bottoms of the receiving boxes, and quantitative suction-out parts used for sucking out the raw materials in the raw material bottles are arranged on the fixing plate; after the suction-out parts suck out the raw materials, the fixing plate is provided with a rotating part for driving the suction-out parts to rotate to the box openings of the receiving boxes.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a production device for dimethyl acetylsuccinate. Background technique [0002] The organic compound Dimethyl acetylsuccinate (DMAS for short), because its molecular structure contains three carbonyl groups, and the three α-position hydrogens connected to it are very active, showing strong molecular activity, making it a It is an extremely important intermediate in organic synthesis, and it has been more and more widely used in the fields of dyes, medicines, food additives, pesticides, fungicides and other fields. At the same time, the research and application fields of dimethyl acetylsuccinate are still expanding, and it is used in the synthesis of various heterocyclic compounds, anti-rust additives in the field of fine chemicals, coatings with special properties and uses, scale inhibitors Etching agent, synthetic resin plasticizer, adhesive, optical material, anti-shrin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J4/00C07C69/757C07C67/313
CPCB01J4/00C07C67/313C07C67/08C07C69/757C07C69/593
Inventor 刘伟樊新敏柴旭森王朝聘段卫东宫占胜杜俊霞
Owner 河北彩客新材料科技股份有限公司
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