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Post-treatment method and device for methionine preparation

A post-processing device and methionine technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as inability to recycle, increase environmental protection pressure, and require electrolysis, so as to increase the economic income of enterprises and reduce The effect of environmental protection pressure and high recovery rate

Active Publication Date: 2017-05-31
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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  • Post-treatment method and device for methionine preparation
  • Post-treatment method and device for methionine preparation
  • Post-treatment method and device for methionine preparation

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 microporous membrane filtration device 1, acid resin acidification device 2, gas-liquid separation tank 3, electrodialysis device 4; microporous membrane filtration device 1, acidic resin acidification device 2, 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 micropore size of 0.45-2μm;

[0052] The acid 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, among the four acidification columns The pipeline is connected by a three-way valve, and any three acidification columns can be connected in series through valve co...

Embodiment 2

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

[0059] A post-processing device for preparing methionine includes microporous membrane filtration device 1, acid resin acidification device 2, gas-liquid separation tank 3, electrodialysis device 4; microporous membrane filtration device 1, acidic resin acidification device 2, 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 micropore size of 0.45-2μm;

[0061] The acid resin acidification device 2: includes an acidification column, the number of acidification columns is 4, that is, it includes a first acidification column 7, a second acidification column 8, a third acidification column 9, a fourth acidification column 10, one of the four acidification columns The pipeline between the two is connected by a three-way valve, and any three acidification columns can be connected i...

Embodiment 3

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

[0068] A post-processing device for preparing methionine includes microporous membrane filtration device 1, acid resin acidification device 2, gas-liquid separation tank 3, stripping tower 5; microporous membrane filtration device 1, acid resin acidification device 2, 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 micropore size of 0.45-2μm;

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

[0071] The first acidi...

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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, relates to a post-processing method and device for preparing methionine, and specifically relates to a separation method and a special device for methionine extraction filtrate. Background technique [0002] Methionine is one of the essential amino acids that constitute the human body. It participates in protein synthesis and is widely used in medicine, food, feed and cosmetics. Methionine contains a methyl group in its molecular structure, which can detoxify toxic substances or drugs by methylating, and can be used to prevent and treat chronic or acute hepatitis, cirrhosis and other liver diseases. At the same time, the largest amount of feed additives is used. Studies have shown that adding methionine in animal feed can promote the absorption of nutrients by animals, thereby promoting the rapid growth of animals, shortening the feeding cycle, and increasing lean meat. In addition, both D-...

Claims

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Application Information

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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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