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A kind of technology that reclaims ammonium sulfate from glyphosate mother liquor

A technology of glyphosate mother liquor and ammonium sulfate, applied in ammonium sulfate and other directions, can solve the problems of no nitrogen resource utilization, waste, and high production cost, and achieve the effects of promoting sustainable development, good economic benefits, and simple and convenient operation

Active Publication Date: 2020-02-18
JIANGXI JINLONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glyphosate by-product glyphosate mother liquor produced by alkyl ester method, glyphosate mother liquor contains nitrogen-containing organic compounds such as glyphosate, glycine, N-hydroxymethylglycine, and glyphosate manufacturers often have glyphosate water Glyphosate preparations such as granules and granules all need to use ammonium sulfate as an activator. At this time, the ammonium sulfate that needs to be used is purchased or produced, and the production cost is high; It is often discarded directly without utilizing the nitrogen resources in it, resulting in waste, which is not conducive to the green concept of low-carbon environmental protection

Method used

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  • A kind of technology that reclaims ammonium sulfate from glyphosate mother liquor

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Effect test

Embodiment 1

[0027] The invention provides a kind of technique that reclaims ammonium sulfate from glyphosate mother liquor, implements according to the following steps:

[0028] S1 oxidation treatment, the glyphosate mother liquor (containing 1.2% glyphosate in the measured glyphosate mother liquor, pH value is 9) is added in the wet catalytic oxidizer and carries out catalytic oxidation with air, obtains oxidation liquid, and described catalytic oxidation The temperature is 200°C, the pressure is 4.0MPa, and the volume ratio of glyphosate mother liquor to air is 1:120. The oxidizing liquid after catalytic oxidation contains phosphate ions, ammonium ions, carbonate ions, etc., and also contains organic nitrogen and other impurities that have not been completely catalyzed and oxidized. The pH value of the oxidizing solution was detected to be 8.5, the ammonia content was 0.50%, and the conversion rate of organic matter was 82.3%.

[0029] S2 alkalization treatment, adding a concentration ...

Embodiment 2

[0034] The invention provides a kind of technique that reclaims ammonium sulfate from glyphosate mother liquor, implements according to the following steps:

[0035] S1 oxidation treatment, the glyphosate mother liquor (the measured glyphosate mother liquor contains 1.5% glyphosate, and the pH value is 10) is added into a wet catalytic oxidizer to carry out catalytic oxidation with air to obtain an oxidation liquid, and the catalytic oxidation The temperature is 250°C, the pressure is 5.0MPa, and the volume ratio of glyphosate mother liquor to air is 1:180. The oxidizing liquid after catalytic oxidation contains phosphate ions, ammonium ions, carbonate ions, etc., and also contains organic nitrogen and other impurities that have not been completely catalyzed and oxidized. The pH value of the oxidizing solution after catalytic oxidation is 7.5, the ammonia content is 0.80%, and the conversion rate of organic matter is 89.7%.

[0036] S2 alkalization treatment, adding a concent...

Embodiment 3

[0041] The invention provides a kind of technique that reclaims ammonium sulfate from glyphosate mother liquor, implements according to the following steps:

[0042] S1 oxidation treatment, the glyphosate mother liquor (contains 2% glyphosate in the measured glyphosate mother liquor, pH value is 11) joins in the wet catalytic oxidizer and carries out catalytic oxidation with air, obtains oxidation liquid, described catalytic oxidation The temperature is 280°C, the pressure is 7.0MPa, and the volume ratio of glyphosate mother liquor to air is 1:240. The oxidizing liquid after catalytic oxidation contains phosphate ions, ammonium ions, carbonate ions, etc., and also contains organic nitrogen and other impurities that have not been completely catalyzed and oxidized. The pH value of the oxidizing solution after catalytic oxidation is 7.3, the ammonia content is 0.89%, and the conversion rate of organic matter is 96.1%.

[0043] S2 alkalinization treatment, adding a concentration ...

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Abstract

Belonging to the field of recycling of nitrogen resources in glyphosate mother liquor, the invention discloses a process for recovery of ammonium sulfate from glyphosate mother liquor. The process iscarried out according to the steps of: S1 oxidation treatment, S2 alkalization treatment, S3 rectification treatment, S4 neutralization treatment and S5 preparation of ammonium sulfate. The process for recovery of ammonium sulfate from glyphosate mother liquor disclosed by the invention fully recovers and utilizes the nitrogen resources of glyphosate mother liquor, achieves production recycling utilization, and then further improves the economic benefits.

Description

technical field [0001] The invention relates to the field of recovery and utilization of glyphosate mother liquid nitrogen resources, in particular to a process for recovering ammonium sulfate from glyphosate mother liquid. Background technique [0002] Glyphosate (glyphosate), the chemical name is N-(phosphine carboxymethyl) glycine, the pure product is a non-volatile white solid, the specific gravity is 0.5, it melts at about 230°C, and it is accompanied by decomposition. Its solubility in water at room temperature Only 1.2 grams, insoluble in general organic solvents, its isopropylamine salt is completely soluble in water, non-flammable, non-explosive, stable in normal temperature storage, and corrosive to medium carbon steel and galvanized iron sheets. Glyphosate is a systemic broad-spectrum herbicide that mainly inhibits enolpyruvyl shikimelin phosphate synthase in the body, thereby inhibiting the conversion of shikimelin to phenylalanine, tyrosine and tryptophan , Int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01C1/24
CPCC01C1/24
Inventor 刘劭农黄伟果汪志仁陆宗盛龙兴祥王富玲胡泽伟黄剑敏孙科
Owner JIANGXI JINLONG CHEM
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