Technology for recovering and utilizing mother liquor generated during process of glycine production through chloroacetic acid method

A technology of glycine and chloroacetic acid, which is applied in the direction of ammonium halide, etc., can solve the problems of mother liquor pollution, low quality ammonium chloride, and low recovery rate, and achieve the effects of energy saving, high quality, and increased economic benefits

Active Publication Date: 2015-01-28
SICHUAN LESHAN FUHUA TONGDA AGRO-CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention aims to solve the problems of low ammonium chloride quality and low recovery rate in recovering glycine mother liquor in the prior art, and the environmental pollution of mother liquor still exists, and provides a process for recycling mother liquor in the process of producing glycine by chloroacetic acid method , to achieve the harmless treatment of glycine mother liquor, and at the same time to recover high-quality ammonium chloride at a high recovery rate

Method used

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  • Technology for recovering and utilizing mother liquor generated during process of glycine production through chloroacetic acid method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method of recycling the mother liquid during the production of glycine in the process of producing glycine, including the following process steps:

[0034] A. Concentration

[0035] First concentrate the mother liquid, get the mother liquid concentration solution and the precipted solid ammonium chloride;

[0036] B. Burning

[0037] The concentrated liquid concentration liquid obtained after concentration is transmitted into the incineration furnace for incineration, and the incineration temperature is controlled to 700 ° C;

[0038] C. Crystal

[0039] Crystal the gases generated by incineration are used in the cooling gymnomer, the crystalline temperature is controlled to 80 ° C, and the crystallization precipitated ammonium chloride.

Embodiment 2

[0041] A method of recycling the mother liquid during the production of glycine in the process of producing glycine, including the following process steps:

[0042] A. Concentration

[0043] First concentrate the mother liquid, get the mother liquid concentration solution and the precipted solid ammonium chloride;

[0044] B. Burning

[0045] The concentrated liquid concentration liquid obtained after concentration is transmitted into the incineration furnace for incineration, and the incineration temperature is controlled to 1000 ° C;

[0046] C. Crystal

[0047] Crystal the gases generated by incineration are used in the cooling gymnarian, and the crystalline temperature is controlled to 300 ° C, and the crystallization precipitated ammonium chloride.

Embodiment 3

[0049] A method of recycling the mother liquid during the production of glycine in the process of producing glycine, including the following process steps:

[0050] A. Concentration

[0051] First concentrate the mother liquid, get the mother liquid concentration solution and the precipted solid ammonium chloride;

[0052] B. Burning

[0053] The concentrated liquid concentration liquid obtained after concentration is transmitted into the incineration furnace for incineration, and the incineration temperature is controlled to 850 ° C;

[0054] C. Crystal

[0055] Crystal the gases generated by incineration are used in the cooling gymnomer, the crystalline temperature is controlled to 190 ° C, and the crystallization precipitated ammonium chloride.

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Abstract

The invention relates to a technology for recovering and utilizing mother liquor generated during the process of glycine production through a chloroacetic acid method, and belongs to the technical field of glycine production. The glycine mother liquor is condensed and burned, and then the glycine mother liquid is subjected to a crystallization treatment. The burning temperature and crystallization temperature are controlled at a specific value so as to maximally reduce the ammonium chloride consumption, the recovery rate of ammonium chloride can reach 95% or more, the high quality ammonium chloride in the glycine mother liquor can be maximally recovered and reutilized, thus the environmental pollution is reduced, and the economic profit is increased at the same time. The technology also has the advantages of simple equipment and technology, and convenient operation.

Description

Technical field [0001] The invention involves a resource recovery and utilization process in the process of production of glycine. More specifically, the invention involves the recycling process of parent liquid in the process of producing glycine in the process of producing glycine, which is the field of environmental protection technology. Background technique [0002] There are two types of industrialized grass glyphosate production technology: IDA method and alkyl ester.Domestic is mainly produced by alkyl -based glyphosate, while glycine is the main raw material for the production of alkyl glyphosate glyphosate.Since the advent of grass glyphosate, the application of glyphosate has become more and more widely used, the demand has continued to increase, and the demand for glycine has also increased.At present, the production of glycine in China is mainly chlorolytic acid ammonia. This process is based on chloride and ammonia water, which is made under the action of Uloto cata...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01C1/16
Inventor 姜永红蒋冲雨廖霞罗均
Owner SICHUAN LESHAN FUHUA TONGDA AGRO-CHEM TECH CO LTD
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