Method for implementing co-production of ammonium sulfate from ADC foaming agent wastewater by extracting hydrazine hydrate
A technology of ADC foaming agent and hydrazine hydrate, which is applied in the field of purifying hydrazine hydrate to realize the co-production of ammonium sulfate from ADC foaming agent wastewater, can solve the problems of complex treatment, unsolved problems, conversion of ADC foaming agent production wastewater, etc., and achieve a unique process. Effect
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[0017] A method for purifying hydrazine hydrate to realize co-production of ammonium sulfate from ADC blowing agent wastewater, characterized in that: the method is to preheat the crude hydrazine hydrate solution step by step to 90°C through the condensed water of each effect, and then enter each effect evaporator in parallel for heating Evaporation, during the evaporation process, hydrazine hydrate and water volatilize to form mixed steam, which is transported from the top of the evaporator to each effect absorption tower through pipelines, and the crystallized sodium chloride and sodium carbonate monohydrate particles deposited in the evaporation process are deposited at the bottom of the evaporator and discharged through the salt discharge pipe , the hydrazine-containing mixed steam produced by each effect evaporator is transported to the lower part of the absorption layer of this effect absorption tower through pipelines, and flows along the absorption layer from bottom to t...
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