Case Research on Zero-discharge Concentration and Drying process of Desulfurization Wastewater in Coal-fired Power Plants
Wet desulfurization is the main desulfurization process in coal-fired power plants.Under current environmental protection policies,the zero discharge effect of desulfurization wastewater is one of the key concerns of coal-fired power plants.On the basis of analyzing the main processes for zero discharge of wastewater,a detailed introduction and case analysis of the commonly used concentration and drying processes are provided.Analyze the concentration and drying process and economic indicators of a coal-fired power plant;collected actual operational data and indicators of the concentration and drying process.By using comparative analysis,identify the differences between design indicators and actual indicators,including differences in energy consumption,operating indicators,equipment output,and operating costs.Based on the problems encountered during the operation process,study the reasons for the differences,mainly including equipment selection,equipment materials,process flow,and other factors.Based on the actual improvement measures adopted,relevant improvement suggestions have been provided.Practice has proven that improving the concentration and drying process can improve the zero discharge effect of wastewater,reduce the occurrence of faults,and lower operating costs.To provide experience and reference for the design,construction,and operation of similar processes.
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