Integrated process for recycling glyphosate mother liquor

A technology of glyphosate mother liquor and process, which is applied in the field of glyphosate mother liquor treatment technology, can solve the problem of high cost, achieve the effects of controlling cost, ensuring normal operation, and improving utilization value

Active Publication Date: 2012-11-21
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

[0007] The purpose of the present invention is to provide an integrated process for the recovery and comprehensive utilization of glyphosate mother liquor in order to solve the problems of high cost and resourceful outlet in the treatment of glyphosate mother liquor

Method used

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  • Integrated process for recycling glyphosate mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] An integrated process for recycling glyphosate mother liquor, the process steps are as follows:

[0042] A glyphosate mother liquor 2500 Kg pretreatment;

[0043] Pretreatment adopts conventional technical methods.

[0044] B Integrated Membrane Separation

[0045] 2000 Kg of the glyphosate mother liquor was adjusted to PH to 8.5 with hydrochloric acid, and then entered the integrated membrane separation system to obtain a permeate of 1462 Kg, which mainly contained sodium chloride and a small amount of organic phosphorus substances. The intercepted liquid is 437Kg, containing glyphosate for the production of 33% ammonium glyphosate.

[0046] The integrated membrane is composed of: sand + activated carbon + ultrafiltration membrane + nanofiltration membrane. The role of the nanofiltration membrane is to intercept macromolecular organic phosphorus and phosphate radicals.

[0047] C oxidation treatment

[0048] For the remaining 500Kg of glyphosate mother liquor, slowl...

Embodiment 2

[0058] An integrated process for recycling glyphosate mother liquor, the process steps are as follows:

[0059] A glyphosate mother liquor 2500 Kg pretreatment;

[0060] Pretreatment adopts conventional technical methods.

[0061] B Integrated Membrane Separation

[0062] 2000 Kg of the glyphosate mother liquor was adjusted to PH to 8.5 with hydrochloric acid, and then entered the integrated membrane separation system to obtain a permeate of 1462 Kg, which mainly contained sodium chloride and a small amount of organic phosphorus substances. The intercepted liquid is 437Kg, containing glyphosate for the production of 33% ammonium glyphosate.

[0063] The integrated membrane is composed of: sand + activated carbon + ultrafiltration membrane + nanofiltration membrane. The role of the nanofiltration membrane is to intercept macromolecular organic phosphorus and phosphate radicals.

[0064] C oxidation treatment

[0065] To the remaining 500Kg of glyphosate mother liquor, slow...

Embodiment 3

[0075] An integrated process for recycling glyphosate mother liquor, the process steps are as follows:

[0076] A glyphosate mother liquor 2500 Kg pretreatment;

[0077] Pretreatment adopts conventional technical methods.

[0078] B Integrated Membrane Separation

[0079] 2000 Kg of glyphosate mother liquor is adjusted to PH to 8.5 with hydrochloric acid, and then enters the integrated membrane separation system to obtain 1459 Kg of permeate, which mainly contains sodium chloride and a small amount of organic phosphorus substances. 441Kg of intercepted liquid, containing glyphosate for the production of 33% ammonium glyphosate.

[0080] The integrated membrane is composed of: sand + activated carbon + ultrafiltration membrane + nanofiltration membrane. The role of the nanofiltration membrane is to intercept macromolecular organic phosphorus and phosphate radicals.

[0081] C oxidation treatment

[0082] To the remaining 500Kg of glyphosate mother liquor, slowly add 166 Kg...

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Abstract

The purpose of the invention is to provide an integrated process for processing mother liquor generated in the process of preparing glyphosate to solve the problems of higher cost and resource solution in glyphosate mother liquor processing. The process comprises the steps of: pre-treatment of mother liquor, integrated film separation, oxidation treatment, crystal separation, chemical phosphorus removal, film separation dechlorination and biochemical treatment. According to the sales condition of water aqua, the dosage of the mother liquor going into a film separation system is adjusted; the market demand is adapted; meanwhile, the cost is controlled; the influences of device maintenance and the like are avoided, and normal operation of a glyphosate production device is guaranteed. The glyphosate obtained from integrated film separation can be used for producing 33% of glyphosate ammonium salt agent; organic phosphorus obtained from crystal separation and chemical phosphorus removal can be applied to phosphate fertilizer production; sodium chloride solution obtained from film separation can be applied to chlor-alkali production, and the other parts can go into biochemical treatment and be discharged with standards.

Description

technical field [0001] The invention relates to a process for treating glyphosate mother liquor, in particular to an integrated process for treating mother liquor produced in the process of preparing glyphosate. Background technique [0002] Glyphosate is an environmentally friendly broad-spectrum herbicide that can effectively remove 76 of the 78 most harmful weeds in the world. With my country's accession to the WTO and the improvement of people's living environment requirements, glyphosate is in line with the development direction of the world's pesticide industry because of its high efficiency, low toxicity, broad spectrum, and no residue. It is the most brilliant chemical pesticide in the world in the 20th century. With the rapid promotion of global glyphosate-resistant transgenic crops in the 21st century, their market prospects will be even broader. [0003] Since glyphosate has a certain solubility in water, a certain amount of glyphosate mother liquor will inevita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C07F9/38C01D3/04
CPCY02P20/10
Inventor 张华张平俊姜永红任成湘杨国华阮冬冬王云于太军陈辉罗翔
Owner SICHUAN LESHAN FUHUA TONGDA AGRO-CHEM TECH CO LTD
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