Exploration of the Application of Composite Desulfurization and Decyanation in Coking Plants
This article focuses on the problems of unstable operation,poor desulfurization effect,and high operating cost of the desulfurization and decyanation device in Shanxi Coking Plant.It analyzes the limiting factors that affect the efficiency of composite desulfurization and decyanation,and based on this,optimizes and adjusts the alkali source and desulfurization position in the desulfurization scheme.Subsequently,various factors affecting desulfurization were studied,and optimal process parameters were obtained:desulfurization liquid temperature of 35～38 ℃,gas temperature of 28～32 ℃,PDS mass fraction of desulfurization liquid of 30 x 10-6～40 x 10-6,mass concentration of hydroquinone of 0.2～0.4 g/L,and liquid to gas ratio of 35～40 L/m3.The application effect is good,which not only meets the environmental protection requirements for the desulfurization efficiency of the gas after desulfurization,but also effectively reduces operating costs.
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