Incineration treatment process for glyphosate mother liquor

Abstract

The invention discloses an incineration treatment process for glyphosate mother liquor. The incineration treatment process comprises the following steps: the glyphosate mother liquor is fed to a membrane treatment device, concentrated mother liquor and a permeate liquid are obtained; the concentrated mother liquor is subjected to glyphosate powder extraction and subjected to primary oxidation, primary crystalizing separation, treatment with a membrane separation system and secondary crystalizing separation, a product enters an incineration system, tetrasodium pyrophosphate is obtained, and flue gas produced through incineration is subjected to secondary burning after dust separation and then is emitted. The membrane treatment concentration technique for the glyphosate mother liquor is combined with the incineration process for the first time and used for completely solving the problem about treatment of the glyphosate mother liquor, salt obtained after incineration can be recycled, the flue gas produced through incineration is subjected to dust separation and secondary burning, so that dioxin in the flue gas can be reduced remarkably, and the environmental requirements are met.

Description

technical field [0001] The invention relates to an incineration treatment process for glyphosate mother liquor, in particular to the incineration treatment process for glyphosate mother liquor with recovered mixed sodium phosphate, and belongs to the technical field of pesticide production. Background technique [0002] The mainstream production process of glyphosate in my country adopts the glycine method (also known as the alkyl ester method). After the synthesis reaction is completed, a large amount of acidic mother liquor (pH < 1.0) will be produced when the glyphosate is extracted from the solid-liquid separation. The mother liquor contains about 24% triethylamine hydrochloride, 1-3% glyphosate, and glyphosate, methyl glyphosate, aminomethylphosphonic acid, dimethyl phosphonite, inorganic phosphate Wait. Since the mother liquor contains a large amount of organic pollutants, direct discharge into the environment will bring serious environmental problems. Before 2010, ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of incineration treatment process of glyphosate mother liquor, adopt the effective combination of steps such as membrane separation, primary oxidation,; Twice crystallization separation, incineration system incineration, can effectively solve the glyphosate after reclaiming mixed sodium phosphate The problem of low oxidation conversion rate of phosphine mother liquor entering the wet oxidation system can completely solve the problem of glyphosate mother liquor treatment, and it is worthy of wide promotion and use

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