Power extraction system and process for glyphosate mother liquor by IDA method

Abstract

The invention relates to a system and a technique for extracting powder from glyphosate mother liquid by an IDA method, wherein, the glyphosate mother liquid flows from a discharge port of a centrifuge to a heat exchanger, from a discharge port of the heat exchanger to the inlet of a preprocessing device, the outlet of the preprocessing device, the inlet of a primary membrane processor and the outlet of the primary membrane processor in sequence; and then, the glyphosate mother liquid is divided into two paths, one path of the glyphosate mother liquid returns to the inlet of the preprocessing device and the other path of the glyphosate mother liquid flows to the inlet of a secondary membrane processor, the outlet of the secondary membrane processor, the inlet of a tertiary membrane processor, the outlet of the tertiary membrane processor, the inlet of a condenser, the outlet of the condenser and the inlet of the centrifuge in sequence. The system and the technique have the advantages that: firstly, membrane concentration is carried out under high temperature ranging from 50 DEG C to 80 DEG C so that the glyphosate mother liquid is crystallized outside a membrane component system, thus avoiding the blockage of the membrane; secondly, the heat energy of a synthetic solution and the glyphosate mother liquid are utilized effectively; thirdly, the glyphosate mother liquid is circulated for powder extraction, thereby reducing the total quantity of the glyphosate mother liquid and greatly reducing pollution emission and pressure of environmental protection; and fourthly, the glyphosate mother liquid is concentrated to extract the powder, thus significantly increasing the economic value of the glyphosate mother liquid.

Description

technical field [0001] The invention relates to an IDA method glyphosate mother liquor powder extraction system and a powder extraction process, and belongs to the field of glyphosate powder extraction system and powder extraction method manufacturing field. Background technique [0002] The original process of glyphosate powder preparation by IDA method glyphosate mother liquor powder extraction system method is that the temperature is 80 ℃ ~ 90 ℃, the synthetic liquid is cooled to below 10 ℃ by brine cooling, at this time, a large number of glyphosate crystals are formed, and then processed Centrifuge to obtain 95% glyphosate crystalline powder and 0.8-1.2% glyphosate mother liquor. 95% glyphosate crystalline powder can be sold directly, while 0.8-1.2% glyphosate mother liquor is sent to the evaporation system to be concentrated to about 10%, and sold as a water solution, see the attached figure 2 . Because the treatment of the glyphosate mother liquor is difficult, and ...

AI Technical Summary

Problems solved by technology

Because the treatment of glyphosate mother liquor is difficult, and the economi

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