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Process of adding acids prior to hydrolysis in glyphosate production

A glyphosate and process technology, which is applied in the field of acid addition process for hydrolysis in the production of glyphosate, can solve the problems of increased control difficulty and side reactions due to concentrated heat release in the acid addition process, and achieves reduction of washing water volume, reduction of production cost, The effect of reducing side effects

Active Publication Date: 2015-03-18
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

[0005] The present invention aims to solve the problem of increased control difficulty and side reactions caused by concentrated heat release in the acid addition process in the prior art, and provides an acid addition process before hydrolysis in the production of glyphosate, which can effectively reduce the heat of reaction and the occurrence of side reactions

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  • Process of adding acids prior to hydrolysis in glyphosate production
  • Process of adding acids prior to hydrolysis in glyphosate production

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A process for adding acid before hydrolysis in glyphosate production, characterized in that it comprises the following process steps:

[0028] A, the condensation reaction synthesis liquid and hydrochloric acid are calculated respectively according to the mol ratio of glycine and hydrogen chloride flow rate, are mixed in the input mixer by two pipelines respectively;

[0029] B. The neutralized liquid obtained after mixing immediately enters the cooler, and the reaction heat is exchanged out of the reaction system while reacting to ensure that the outlet temperature of the cooler feed liquid is 30°C;

[0030] C. The neutralized solution obtained by mixing is cooled and then enters the hydrolysis reactor for hydrolysis to obtain glyphosate.

[0031] The molar ratio of glycine to hydrogen chloride in step A of the present invention is 1:2.8.

[0032] The mixer in the step A of the present invention is a corrugated packing mixer.

[0033] The filler of the above-mentione...

Embodiment 2

[0039] A process for adding acid before hydrolysis in glyphosate production, characterized in that it comprises the following process steps:

[0040] A, the condensation reaction synthesis liquid and hydrochloric acid are calculated respectively according to the mol ratio of glycine and hydrogen chloride flow rate, are mixed in the input mixer by two pipelines respectively;

[0041] B. The neutralized liquid obtained after mixing immediately enters the cooler, and the reaction heat is exchanged out of the reaction system while reacting to ensure that the outlet temperature of the cooler feed liquid is 45°C;

[0042] C. The neutralized solution obtained by mixing is cooled and then enters the hydrolysis reactor for hydrolysis to obtain glyphosate.

[0043] The molar ratio of glycine to hydrogen chloride in step A of the present invention is 1:3.5.

[0044] The mixer in the step A of the present invention is a corrugated packing mixer.

[0045] The filler of the above-mentione...

Embodiment 3

[0051] A process for adding acid before hydrolysis in glyphosate production, characterized in that it comprises the following process steps:

[0052] A, the condensation reaction synthesis liquid and hydrochloric acid are calculated respectively according to the mol ratio of glycine and hydrogen chloride flow rate, are mixed in the input mixer by two pipelines respectively;

[0053] B. The neutralized liquid obtained after mixing immediately enters the cooler, and the reaction heat is exchanged out of the reaction system while reacting to ensure that the outlet temperature of the cooler feed liquid is 35°C;

[0054] C. The neutralized solution obtained by mixing is cooled and then enters the hydrolysis reactor for hydrolysis to obtain glyphosate.

[0055] The molar ratio of glycine to hydrogen chloride in step A of the present invention is 1:3.15.

[0056] The mixer in the step A of the present invention is a corrugated packing mixer.

[0057] The filler of the above-mention...

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Abstract

The invention provides a process of adding acids prior to hydrolysis in glyphosate production. According to the invention, firstly hydrochloric acid is mixed with the condensation reaction liquid before hydrolysis to carry away most heat, and then hydrolysis is carried out. The process effectively reduces adverse effects of reaction heat, increases the yield of glyphosate and makes post-treatment easy.

Description

technical field [0001] The present invention relates to a kind of production technology of glyphosate, more specifically, the present invention relates to a kind of acid addition process of hydrolysis in the production of glyphosate. Background technique [0002] Glyphosate (glyphosate), scientific name N-(phosphonomethyl) glycine, N-(phosphonomethyl) glycine, is an organophosphorus herbicide. The herbicidal properties of glyphosate were discovered by D.D. Baird in the United States in 1971, and developed and produced by Monsanto. By the 1980s, it had become an important variety of herbicides in the world. Glyphosate is a systemic chronic broad-spectrum herbicide that mainly inhibits enolacetonyl shikimelin phosphate synthase in the body, thereby inhibiting the conversion of shikime to phenylalanine, tyrosine and tryptophan. Transformation, which interferes with protein synthesis leading to plant death. Glyphosate is absorbed by the stems and leaves and then transmitted to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/38
Inventor 姜永红王利平
Owner SICHUAN LESHAN FUHUA TONGDA AGRO-CHEM TECH CO LTD