The collaborative disposal of solid waste in cement kilns has significant advantages such as environmental friendliness,efficient disposal,and reliable technology.However,the high chloride ion content in solid waste leads to severe crust formation in the pre decomposition kiln system,resulting in a reduction in the amount of solid waste disposed of in the kiln.The process of chloride salt circulation and enrichment in the preheater system during the calcination of cement clinker was analyzed,and the effects of the chlorine removal system before and after opening,as well as different solid waste dosages,on the operation of the cement kiln system were compared and studied.The results showed that the operation of the chlorine removal system significantly reduced the circulation of chlorine elements in the kiln system,reduced the phenomenon of crust formation in the pre decomposition kiln system,and increased the amount of solid waste added.In the actual production process,the chlorine content and background concentration of raw materials at different stages,as well as the harmful element composition in solid waste,should be combined to adjust the exhaust rate and opening time of the chlorine removal system in a timely manner,in order to optimize the operating cost and heat loss of the chlorine removal system.
关键词
协同处置/氯离子/固废投加量/放风率
Key words
collaborative disposal/chloride ion/quantity of solid waste added/bypass rate
维普
万方数据