Comprehensive treatment process for glyphosate mother liquor
A glyphosate mother liquor and comprehensive treatment technology, which is applied in the field of glyphosate mother liquor recovery and treatment, can solve the problems of polluting the environment, difficulty in reusing waste liquid or waste, and high processing costs
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Embodiment 1
[0101] Take 5500g of the acidic mother liquor obtained by the production of glyphosate by the glycine method, which is strongly acidic, heat up to 100°C under normal pressure, filter the precipitated triethylamine hydrochloride while heating and concentrating, and return the filtrate to the mother liquor , 1500g of water was distilled off to obtain 2265.2g of triethylamine hydrochloride and 1734.8g of glyphosate mother liquor concentrate, and the glyphosate mother liquor concentrate was strongly acidic.
[0102] Cool the glyphosate mother liquor concentrate to 25°C, add 1000g of triethylamine, adjust the pH of the solution to 14, then add 651.2g of sodium liquid caustic soda, neutralize to pH=14, obtain 3386.2g of mother liquor, heat to 50°C, After standing for 2 hours, the solution was divided into 3 layers. After separation, 300 g of triethylamine in the upper layer, 1795 g of a solution containing triethylamine hydrochloride in the middle layer and 1290 g of a sodium salt so...
Embodiment 2
[0107] Take 5500g of the acidic mother liquor obtained by the glycine method to produce glyphosate, its pH=0.8, raise the temperature to 120°C under normal pressure, filter the precipitated triethylamine hydrochloride while heating and concentrating, and return the filtrate to the mother liquor , 1500g of water was distilled off to obtain 2265.2g of triethylamine hydrochloride and 1734.8g of glyphosate mother liquor concentrate, and the pH of the glyphosate mother liquor concentrate was 0.8.
[0108] Cool the glyphosate mother liquor concentrate to 25°C, add 200g of triethylamine, adjust the pH of the solution to 2, then add 651.2g of sodium caustic soda, neutralize to pH=7, obtain 2586.2g of mother liquor, heat to 100°C, After standing still for 2 hours, the solution was divided into two layers. After separation, 1296g of the solution containing triethylamine hydrochloride in the upper layer and 1290g of the sodium salt solution of organic phosphorus in the lower layer were ob...
Embodiment 3
[0113] Take 5500g of the acidic mother liquor obtained by the production of glyphosate by the glycine method, which is strongly acidic, heat up to 130°C under normal pressure, filter the precipitated triethylamine hydrochloride while heating and concentrating, and return the filtrate to the mother liquor , 1500g of water was distilled off to obtain 2265.2g of triethylamine hydrochloride and 1734.8g of glyphosate mother liquor concentrate, and the glyphosate mother liquor concentrate was strongly acidic.
[0114] Cool down the glyphosate mother liquor concentrate to 25°C, add 1500g of triethylamine, adjust the pH of the solution to 14, then add 651.2g of sodium liquid caustic soda, neutralize to pH=14, obtain 2386.2g of mother liquor, heat to 25°C, After standing for 2 hours, the solution was divided into 3 layers, and 800 g of triethylamine in the upper layer, 1796 g of a solution containing triethylamine hydrochloride in the middle layer and 1290 g of a sodium salt solution of o...
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