Method for separating and concentrating glyphosate stock solution

Abstract

The invention discloses a method for concentrating glyphosate mother solution by membrane separation technique, separating glyphosate mother solution by selectively permeable membrane at normal temperature and high pressure, thus achieving the concentrating effect, and the whole course comprises preprocessing device, pressure pump, concentrating device and auxiliary system, where the concentrating device is the kernel part and for achieving better effect, comprises reverse osmosis and accept filtration or two-stage reverse osmosis. The advantages of the invention: it can effectively concentrate glyphosate mother solution and assure the quality of the glyphosate mother solution, and reduces secondary pollution and energy consumption in the concentrating course. And the invention can be widely applied to the occasions in need of concentrating glyphosate.

Description

technical field [0001] The invention relates to a membrane separation technology, in particular to a membrane separation technology for glyphosate solution concentration. Background technique [0002] As a broad-spectrum and high-efficiency herbicide, glyphosate is more and more widely used in agricultural production. At present, it is mainly synthesized by IDA process, but the concentration of glyphosate mother liquor synthesized by IDA process is low, which is extremely difficult for transportation and sales. Unfavorable, enterprises are now using evaporation method to remove most of the water, but the evaporation process consumes a lot of energy, and evaporation can easily cause the decomposition of glyphosate and reduce the product yield. cause serious pollution. Moreover, as an organic substance, when subjected to high temperature treatment, the molecular structure of the substance often changes, such as the occurrence of chemical phenomena such as molecular decomposit...

AI Technical Summary

Problems solved by technology

[0002] As a broad-spectrum and high-efficiency herbicide, glyphosate is widely used in agricultural production. At present, it is mainly synthesized by IDA process, but the concentration of glyphosate mother liquor synthesized by IDA process is low, which is very difficult for transportation and sales. Unfavorable, enterprises are now using evaporation to remove most of the water, but the evaporation process consumes a lot of energy, and evaporation can easily cause the decomposition of glyphosate and reduce the product yield. At the same time, the evaporation process will produce a large amount of ammonia, which is harmful to the environment cause serious pollution

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