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Novel deesterification, rectification and purification method for 2-methoxy-1-propanol acetate

A technology of propanol acetate and purification method, which is applied in the field of deesterification and rectification of 2-methoxy-1-propanol acetate, and can solve the problems of low product yield, high consumption reduction, frequent catalyst replacement, etc. problems, to achieve the effect of improving product purity, improving separation effect, and improving catalyst purity

Inactive Publication Date: 2021-03-26
NANTONG BAICHUAN NEW MATERIAL CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide a novel method for deesterification and rectification of 2-methoxy-1-propanol acetate to solve the problems of frequent replacement of catalysts, low product yield and high consumption reduction

Method used

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  • Novel deesterification, rectification and purification method for 2-methoxy-1-propanol acetate
  • Novel deesterification, rectification and purification method for 2-methoxy-1-propanol acetate

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Embodiment Construction

[0045] Such as figure 2 A kind of novel 2-methoxy-1-propanol acetate deesterification rectification purification method shown, comprises feed pump, ester product tower evaporator 1, ester product tower 2, catalyst recovery tank 3, catalyst Recovery pump 4, ester product condenser 5, ester cooler 6, ester tower tail cooler 7, ester product tank 8, ester condensate intermediate tank 9, ester product tower reflux pump 10, ester product condenser II 11, vacuum pump, crude product inlet Tower flow meter FT1, reflux flow meter FT2, finished product production flow meter FT3.

[0046] The outlet of the feed pump is connected to the inlet of the evaporator 1 of the ester product tower through pipeline A.

[0047] The outlet of the liquid phase at the bottom of the ester product tower 2 is connected to the inlet of the catalyst recovery tank 3 through a pipe B, and the gas phase port at the top of the ester product tower 2 is connected with the condenser 5 of the ester tower through ...

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Abstract

The invention relates to a novel deesterification, rectification and purification device for 2-methoxy-1-propanol acetate. The device comprises an ester product tower evaporation kettle, an ester product tower, a catalyst recovery tank, a catalyst recovery pump, a finished ester product condenser, an ester cooler, an ester tower tail cooler, a finished ester product tank, an ester condensate intermediate tank, an ester product tower reflux pump and a finished ester product condenser II. The invention also relates to a novel deesterification, rectification and purification method for 2-methoxy-1-propanol acetate. The method comprises the following steps of: feeding, rectification, condensation, sampling detection, external reflux, catalytic purification and finished product collection. According to the invention, the separation effect of the evaporation kettle is improved by adjusting the content of each component in a material system in a tower, the content of 2-methoxy-1-propanol acetate is improved, and the purity of 2-methoxy-1-propanol acetate is improved; and thus, the content of 2-methoxy-1-propanol acetate in tower-bottom heavy components is reduced, the purity of a catalystis improved, replacement frequency is reduced, and loss is reduced.

Description

technical field [0001] The invention relates to the field of fine chemical production, in particular to a novel 2-methoxy-1-propanol acetate deesterification and rectification purification method. Background technique [0002] 2-Methoxy-1-propanol acetate is a low-toxic high-grade industrial solvent with excellent performance. It has strong solubility for polar and non-polar substances. It is suitable for various polymers in high-grade coatings and inks. solvents, including urethanes, vinyls, polyesters, cellulose acetates, alkyds, acrylics, epoxies, and nitrocellulose. [0003] As an excellent organic solvent, 2-methoxyl-1-propanol acetate has great value in itself, so its yield should be improved in the production process to improve the product yield as much as possible. [0004] The existing production process is detailed in the process as attached figure 1 Shown: [0005] Description of the main production process: firstly, the crude product is imported from the pump ...

Claims

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Application Information

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IPC IPC(8): B01D3/14B01D3/00B01D3/42C07C67/54C07C67/52C07C69/16
CPCC07C67/52C07C67/54B01D3/14B01D3/009B01D3/4205C07C69/16Y02P20/584
Inventor 郑铁江吴晓明赵跃冒佳伟顾银军夏海峰万鹏袁庆庆黄小磊
Owner NANTONG BAICHUAN NEW MATERIAL CO LTD
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