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A post-treatment method and device for preparing methionine

A post-processing device, methionine technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problems of inability to recover and recycle, increase environmental protection pressure, consume large amounts of electricity, etc. The effect of reducing environmental protection pressure and high recovery rate

Active Publication Date: 2019-03-22
SHANDONG XINHECHENG AMINO ACID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] (2) The treatment of methionine production filtrate requires electrolysis, which consumes a lot of electricity;
[0012] (3) The treatment of methionine production filtrate produces a large amount of waste water containing formic acid, which increases the pressure on environmental protection after discharge, and cannot be recycled and reused

Method used

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  • A post-treatment method and device for preparing methionine
  • A post-treatment method and device for preparing methionine
  • A post-treatment method and device for preparing methionine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1 A post-processing device for preparing methionine

[0050] A post-processing device for preparing methionine includes a microporous membrane filtration device 1, an acid resin acidification device 2, a gas-liquid separation tank 3, and an electrodialysis device 4; a microporous membrane filtration device 1, an acid resin acidification device 2, and a gas-liquid separation tank 3. The electrodialysis devices 4 are connected by pipelines;

[0051] The microporous membrane filtration device 1: adopts a microporous membrane structure with a pore size of 0.45-2 μm;

[0052] The acidic resin acidification device 2: includes acidification columns, the number of acidification columns is 4, namely the first acidification column 7, the second acidification column 8, the third acidification column 9, the fourth acidification column 10, between the four acidification columns The pipelines are connected through a three-way valve, and any three acidification columns can be...

Embodiment 2

[0058] Example 2 A post-processing device for preparing methionine

[0059] A post-processing device for preparing methionine includes a microporous membrane filtration device 1, an acid resin acidification device 2, a gas-liquid separation tank 3, and an electrodialysis device 4; a microporous membrane filtration device 1, an acid resin acidification device 2, and a gas-liquid separation tank 3. The electrodialysis devices 4 are connected by pipelines;

[0060] The microporous membrane filtration device 1: adopts a microporous membrane structure with a pore size of 0.45-2 μm;

[0061] The acidic resin acidification device 2: includes acidification columns, the number of acidification columns is 4, that is, the first acidification column 7, the second acidification column 8, the third acidification column 9, the fourth acidification column 10, one of the four acidification columns The pipelines between them are connected through a three-way valve, and any three acidification ...

Embodiment 3

[0067] Example 3 A post-processing device for preparing methionine

[0068] A post-processing device for preparing methionine includes a microporous membrane filtration device 1, an acid resin acidification device 2, a gas-liquid separation tank 3, and a stripping tower 5; the microporous membrane filtration device 1, an acid resin acidification device 2, and a gas-liquid separation tank 3. The stripping towers 5 are connected by pipelines;

[0069] The microporous membrane filtration device 1: adopts a microporous membrane structure with a pore size of 0.45-2 μm;

[0070] The acid resin acidification device 2: includes acidification columns, the number of acidification columns is 4, that is, the first acidification column 7, the second acidification column 8, the third acidification column 9, the fourth acidification column 10, between the four columns The pipelines are connected through a three-way valve, and any three of the columns can be connected in series through valve...

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Abstract

The invention provides a post-treatment method and device for methionine preparation. The post-treatment method comprises the treatment steps of filtration, acidification, gas-liquid separation, methionine separation and saturated-state acidification column regeneration. The methionine separation is performed by adopting an electrodialysis separation device or a stripping tower or alkaline resin acidification device. The hydrolysis step is that feed liquid is led to a material pipeline port at the bottom of the acidification columns and continuously passes through three serially connected acidification columns. The post-treatment device for methionine preparation comprises a filtering device, an acidic resin acidification device, a gas-liquid separation tank and a methionine separation device. For treatment of methionine production filtrate, new substances are not needed to be instructed. The energy consumption is reduced by 90%. Potassium formate can be taken out from the filtrate, and the filtrate can be beneficially circulated. A large amount of wastewater containing low-concentration formic acid is not produced, and environmental protection pressure is reduced.

Description

technical field [0001] The invention belongs to a separation method of chemical products, and relates to a post-treatment method and device for preparing methionine, in particular to a separation method and a special device for extracting filtrate of methionine. Background technique [0002] Methionine is one of the essential amino acids that constitute the human body. It participates in the synthesis of proteins and is widely used in the fields of medicine, food, feed and cosmetics. The molecular structure of methionine contains a methyl group, which detoxifies toxic substances or drugs through methylation, and can be used to prevent and treat chronic or acute hepatitis, cirrhosis and other liver diseases. At the same time, it is used as a feed additive in the largest amount. Studies have shown that adding methionine to animal feed can promote the absorption of nutrients by animals, thereby promoting the rapid growth of animals, shortening the feeding cycle, and increasing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C323/58C07C319/28
CPCC07C319/28C07C323/58
Inventor 王志轩陈聪李寅
Owner SHANDONG XINHECHENG AMINO ACID
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