Study on a Pretreatment Method for Waste Salt of Emamectin Benzoate
Emamectin benzoate is a broad-spectrum and highly effective insecticide.Its production process uses tetramethylethylenediamine as the acid-acceptor,which produces the corresponding tetramethylethylenediamine hydrochloride as hazardous waste(i.e.waste salt of emamectin benzoate).The hazardous waste has a high chlorine content(28.15%)and generates a large amount of hydrogen chloride during incineration,which has a significant impact on production equipment and environmental protection.This article adopts a collaborative pretreatment method with another type of hazardous waste to change the state of combustible chlorine elements,which reduce the production of hydrogen chloride,consumable material and equipment corrosion,reduce production costs and improve production efficiency during this process.This article investigates the effects of alkali types,reaction temperature,time and solvent amount on the removal rate of combustible chlorine.Under the conditions of using waste catalysts containing organic potassium salts as combustible chlorine removal agents,temperature 25℃,reaction time 20 minutes,and solvent amount 0.4 mL/g,the removal rate of combustible chlorine can reach 84.2%,basically achieving the removal effect of sodium hydroxide.This method has a certain reference value for the pretreatment of such hazardous waste.
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