New method for treating glyphosate mother liquor

A glyphosate mother liquor and treatment method technology, applied in chemical instruments and methods, compounds of group 5/15 elements of the periodic table, organic chemistry, etc., can solve poor soil dispersibility, high sodium chloride content, and sticky soil and other problems, to achieve the effect of improving weeding effect, significant economic benefits, and eliminating land salinization
CN1824667AActive Publication Date: 2006-08-30ZHEJIANG XINAN CHEM INDAL GROUP
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
ZHEJIANG XINAN CHEM INDAL GROUP
Publication Date
2006-08-30

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Abstract

The present invention relates to a treatment method of mother liquor obtained for synthesizing glyphosate by using alkyl ester process. Said method is mainly characterized by that the ammonia gas and carbon dioxide gas are successively introduced into the neutralized alkaline mother liquor, fully reacted and filtered, the filtrate is treated, and can be used for preparing glyphosate water preparation.
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Description

technical field

[0001] The invention relates to a new method for treating glyphosate mother liquor for preparing glyphosate by an alkyl ester method. Background technique

[0002] Glyphosate is a herbicide that kills herbicides. At present, the domestic production of glyphosate mostly uses the alkyl ester method. This process produces a large amount of acidic mother liquor containing chloride ions (abbreviated as acid mother liquor) while producing the technical glyphosate, which contains a large amount of catalyst triethylamine used in synthesis. Domestic glyphosate manufacturers usually adopt liquid alkali neutralization process when dealing with the acid mother liquor to recover the catalyst triethylamine: add 30% sodium hydroxide solution to the acid mother liquor, adjust the pH value to 10-12, let it stand for stratification, and the upper layer It is triethylamine, which is recovered and reused in the synthesis of glyphosate. The lower layer is called alkaline mother ...

Claims

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