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Process for treating production mother liquor of glyphosate

A treatment process, glyphosate technology, applied in chemical instruments and methods, organic chemistry, compounds of Group 5/15 elements of the periodic table, etc., can solve poor economic benefits, impossible to obtain high concentration ratio, and market capacity Insufficient and other issues

Active Publication Date: 2007-04-04
HANGZHOU JINFADA CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the mother liquor is mainly disposed of through the preparation of water preparations. However, due to the large output of mother liquor, if the mother liquor is not concentrated, all the mother liquor is used for the preparation of glyphosate water preparations, the market capacity is insufficient, and the economic benefits are not good; The impurity content is very high, it is impossible to obtain a high concentration ratio, if the concentration is too high, the preparation of glyphosate water is prone to turbidity and crystallization

Method used

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Embodiment Construction

[0013] The preferred embodiment of the present invention will be described in detail below.

[0014] The mother liquor treatment process for glyphosate production is as follows: the mother liquor produced after glyphosate crystallization and separation is reclaimed through triethylamine. Since the sodium chloride in the mother liquor is not saturated, in order to reduce the amount of mother liquor, after steaming the triethylamine Immediately afterwards, the mother liquor is concentrated until the sodium chloride is nearly saturated, then cooled to 30-60°C, and the sodium chloride is removed by crystallization; then, ammonium bicarbonate is added to the mother liquor, and the weight ratio of the added ammonium bicarbonate to the mother liquor is 1 : 3 ~ 5, stirred at 40 ~ 50 ℃, until fully reacted, because the solubility of sodium bicarbonate is less than that of sodium chloride, so the double decomposition reaction occurs between the two, and sodium bicarbonate precipitates ou...

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Abstract

A process for treating the productive mother liquid of glyphosate includes such steps as proportionally adding ammonium dicarbonate, stirring while reaction, solid-liquid separation to obtain dicarbonate cake for cyclic use and filtrate, and using the filtrate to prepare the liquid glyphosate.

Description

technical field [0001] The invention relates to a treatment process for glyphosate production mother liquor, in particular to a treatment process for glyphosate production mother liquor for preparing glyphosate water preparation. Background technique [0002] Glyphosate is the systemic herbicide with the largest sales volume and the fastest growth rate in the world, and with the successful development and popularization of glyphosate-resistant transgenic crops, it provides new opportunities for the production of glyphosate. There are two main synthetic methods for global glyphosate production. One is the IDA method, which uses diethanolamine as the starting material. This method is commonly used by foreign companies such as Monsanto in the United States. The other is the alkyl ester method, which is adopted by most domestic enterprises. This method. The main raw materials for the production of glyphosate acid by the alkyl ester method are paraformald...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/38
Inventor 孔鑫明刘劭农刘德亮于游海李群浩
Owner HANGZHOU JINFADA CHEM IND