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Process for extracting glyphosate from acid mother liquor

A technology of glyphosate and acid mother, which is applied in the field of extraction technology for producing glyphosate, and achieves the effect of wide application and wide adaptability

Active Publication Date: 2013-03-27
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

[0006] The above patent is to add triethylamine to extract glyphosate. This process is selective to the acid mother liquor. If the quality of the acid mother liquor is slightly poor or the mother liquor of a different process is not applicable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Get 1000 grams of glyphosate acid mother liquor, and detect that the glyphosate content is 1.5%. Add 150 grams of 50% sodium hydroxide solution for neutralization, test pH to 4, heat to 100°C, then add 1500 grams of extract, its components are ammonia water with 90% triethylamine, 5% methanol, and 30% mass fraction 5% mixed liquid, after stirring evenly, check the pH value to 7, let it stand for 1 hour, the liquid is divided into upper, middle and lower layers. The upper layer is the extractant, the middle layer contains 0.1% glyphosate, and weighs 400 grams. The lower layer contains 10% glyphosate and weighs 127 grams.

Embodiment 2

[0024] Get 1000 grams of glyphosate acid mother liquor, detect glyphosate content 1%. Add 100 grams of 30% sodium hydroxide solution for neutralization, check the pH to be 6, heat to 120°C, then add 1100 grams of extract, whose components are ammonia water with 92% triethylamine, 3% methanol, and 30% mass fraction 5% mixed liquid, after stirring evenly, check the pH value to 9, let it stand for 5 hours, the liquid is divided into upper, middle and lower layers. The upper layer is an extractant, the middle layer has a glyphosate content of 0.2%, and a weight of 400 grams. The lower layer contains 6% glyphosate and weighs 140 grams.

Embodiment 3

[0026] Get 1000 grams of glyphosate acid mother liquor, glyphosate content 2%. Add 160 grams of 40% sodium hydroxide solution for neutralization, check that the pH is 5.5, heat to 105°C, and then add 1200 grams of extract, whose components are ammonia water with 95% triethylamine, 2% methanol, and 30% mass fraction 3% mixed liquid, after stirring evenly, check the pH value to 8.5, let it stand for 3 hours, the liquid is divided into upper, middle and lower layers. The upper layer is an extractant, the middle layer has a glyphosate content of 0.23%, and a weight of 250 grams. The lower layer contains 14% glyphosate and weighs 140 grams.

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PUM

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Abstract

The invention relates to a process for extracting glyphosate from acid mother liquor and aims to provide a process capable of processing all kinds of acid mother liquor and extracting glyphosate from the acid mother liquor. The process comprises the steps of heating, preparing extractant, extraction and the like, and overcomes the drawback of incapability of performing extraction on acid mother liquid of slightly low quality or acid mother liquor made by different processes in the prior art, can perform extraction on acid mother liquor of any quality and acid mother liquor made by different processes, and can be applied more widely.

Description

technical field [0001] The invention relates to an extraction process for producing glyphosate, more specifically, the invention relates to a process for extracting glyphosate from acid mother liquor. 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 various parts of the plant. It c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/38
Inventor 姜永红刘德亮陈辉冯杰谢莎
Owner SICHUAN LESHAN FUHUA TONGDA AGRO-CHEM TECH CO LTD
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