流化床中焚烧处理含氯有机废液HCl排放及脱除研究

对在流化床中焚烧处理含三氯乙醛（C2H3Cl3O2）的有机废液，在773~1173K的温度范围内，进行了废液焚烧时HCl的排放特性及在床料中添加CaO脱除HCl气体的实验研究。实验研究表明随着温度的升高有机Cl－HCl转化率增大，相同温度下，随着过量空气系数a的增大有机Cl－HCl转化率变化不大。实验研究了Ca/Cl摩尔比、温度、时间、CaO颗粒粒径和废液中三氯乙醛浓度对HCl去除率的影响。结果表明随着Ca/Cl摩尔比的增大，HCl去除率增加；当温度低于873K时，随着温度的升高HCl去除率增大，873K时达到最大，然后随着温度的继续升高HCl去除率呈急剧下降趋势；同一温度下，在反应的初始阶段， HCl气体的去除率非常高。随着反应的继续进行，HCl去除率相应地迅速下降直至最后趋于缓慢；随着CaO颗粒粒径的减小，HCl去除率增大；随着废液中三氯乙醛浓度的增高，烟气中HCl浓度增加，HCl去除率增大。

Experimental Study on the Emission and Removal of HCl from Incineration of Chlorinated Waste Water in Fluidized Bed

The emission and removal of HCl from incineration of organic waste water which contains C2H3Cl3O2 have been investigated at 773-1173K in a bubbling fluidized bed.Experimental results show that organic Cl-HCl conversion increases as temperature increasing,and organic Cl-HCl conversion nearly is not influenced by excess air ratio.The capacity of CaO for binding HCl has been studied.The sorption rate of HCl increases as Ca/Cl mole ratio increasing,and decreases as initial CaO particle size increasing.With the temperature increasing,the sorption rate of HCl increases,and at 873K,it reaches the maximum,and then decreases with increasing in temperature.At the same temperature,the sorption rate of HCl is very high at the start of the reaction,and gradually decreases as reaction time increases.The higher the concentration of organic Cl in the waste water is,the higher the concentration of HCl gas and the sorption rate of HCl.