Research on the Recovery Process of Desulfurization Waste Liquid in Coking Plants
Traditional treatment methods for desulfurization waste liquid,such as distributed crystallization method and anion resin exchange method,have the disadvantage of low recovery and utilization rate,and cannot achieve high-purity recovery of sodium thiocyanate and sodium thiosulfate.Based on this,according to the property that sodium thiocyanate is easily soluble in alcohol and other main components are insoluble in alcohol in the by-product salt of desulfurization waste liquid,a method for treating desulfurization waste liquid with alcohol is proposed,which separates and recovers sodium thiocyanate and sodium thiosulfate from the by-product salt to solve the problem of difficult treatment of desulfurization waste liquid in coking enterprises.
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