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Method and system for preparing phenylpropionic acid

A preparation system, the technology of phenylpropionic acid, applied in the field of phenylpropionic acid preparation, can solve the problems of lower production efficiency, cumbersome operation, large environmental interference, etc., and achieve the effect of flexible use, convenient operation and high preparation stability

Inactive Publication Date: 2019-05-24
江西华尔盛科贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing phenylpropionic acid preparation process is cumbersome to operate and is greatly disturbed by the environment, which makes the preparation stability of phenylpropionic acid poor, which in turn leads to low preparation efficiency of phenylpropionic acid and reduces production efficiency

Method used

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  • Method and system for preparing phenylpropionic acid
  • Method and system for preparing phenylpropionic acid
  • Method and system for preparing phenylpropionic acid

Examples

Experimental program
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Effect test

Embodiment 1

[0034] see figure 1 , a flow chart of the steps for the preparation method of phenylpropionic acid provided in the first embodiment of the present invention, including steps:

[0035] Step S10, putting the amino acid solution and dissolving agent into a reaction tank for dissolving and stirring, and reacting and standing still;

[0036] Wherein, the standing time for the reaction to stand still is 1 hour, the dissolving agent is distilled water, the reaction tank is made of an elliptical structure made of stainless steel, and the reaction tank is provided with a plurality of feeding ports. An end cover is provided on the feed port, and the amino acid solution and the dissolving agent are fed through the corresponding feed port. Preferably, a stirring motor is provided on the side wall of the reaction tank, and the stirring of the stirring motor The shaft runs through the reaction tank, and the end of the stirring shaft is provided with a stirrer, which is used to stir the ami...

Embodiment 2

[0047] see figure 2 , a flow chart of the steps for the preparation method of phenylpropionic acid provided in the second embodiment of the present invention, including steps:

[0048] Step S11, putting the amino acid solution and dissolving agent into the reaction tank for dissolving and stirring, and reacting and standing still;

[0049]Wherein, the standing time for the reaction to stand still is 1 hour, the dissolving agent is distilled water, the reaction tank is made of an elliptical structure made of stainless steel, and the reaction tank is provided with a plurality of feeding ports. An end cover is provided on the feed port, and the amino acid solution and the dissolving agent are fed through the corresponding feed port. Preferably, a stirring motor is provided on the side wall of the reaction tank, and the stirring of the stirring motor The shaft runs through the reaction tank, and the end of the stirring shaft is provided with a stirrer, which is used to stir the ...

Embodiment 3

[0062] see image 3 , is a schematic structural diagram of the phenylpropionic acid preparation system 100 provided in the third embodiment of the present invention, including:

[0063] The PH adjustment module 10 is used to put the amino acid solution and the dissolving agent into the reaction tank for dissolving and stirring and reacting and standing still, add the pH adjusting agent in the reaction tank and heat and stir until the current pH of the solution in the reaction tank value is equal to the pH threshold, wherein, the standing time of the reaction is 1 hour, the dissolving agent is distilled water, and the reaction tank is made of an elliptical structure made of stainless steel, and the reaction tank is provided with a plurality of Feed port, the feed port is provided with an end cover, and the amino acid solution and the dissolving agent are fed through the corresponding feed port. Preferably, a stirring motor is provided on the side wall of the reaction tank, so ...

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Abstract

The invention provides a method and system for preparing phenylpropionic acid. The phenylpropionic acid preparation method comprises the following steps of: putting an amino acid solution and a dissolving agent into a reaction tank, dissolving, stirring, reacting and standing; adding a PH regulator into the reaction tank and heating and stirring until the current PH value of the solution in the reaction tank is equal to a PH threshold value; adding phenylpropanal and a catalyst into the reaction tank, and continuously injecting oxygen to control oxidation reaction between the phenylpropanal and the oxygen; continuously heating the reaction tank and when the current temperature in the reaction tank is equal to a temperature threshold value, continuously heating the reaction tank at the temperature threshold value until the phenylpropanal is completely oxidized to obtain crude phenylpropionic acid; injecting the crude phenylpropionic acid into a low-pressure separation tank for low-pressure separation, and heating and rectifying the separated crude phenylpropionic acid to obtain refined phenylpropionic acid. The phenylpropionic acid preparation method and the phenylpropionic acid preparation system have the advantages of convenience in operation, flexibility in use and high preparation stability.

Description

technical field [0001] The invention relates to the technical field of phenylpropionic acid preparation, in particular to a method and system for preparing phenylpropionic acid. Background technique [0002] Phenylpropionic acid (3-phenylpropionic acid, Hydrocinnamic acid, CAS: 501-52-0), molecular formula: C9H10O2, molecular weight: 150.1745. Phenylpropionic acid is a fixative for spices, used as a pharmaceutical intermediate, also used in organic synthesis, and can also be used in baked food, pudding, frozen dairy products, etc. With the development of science and technology and the improvement of living standards, human beings have higher and higher requirements for medicines and spices, and the demand is increasing. Now it is growing at a rate of 20% every year, and its development prospects are very good. Therefore, In the preparation process of phenylpropionic acid, the problems of its stability and preparation efficiency have been paid more and more attention by peop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/235C07C57/30
Inventor 李建军周海峰
Owner 江西华尔盛科贸有限公司
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