关于从高含氯化工废料焚烧烟气中回收盐酸的模拟研究  

A Simulation Study on the Recovery of Hydrochloric Acid from the Incineration Flue Gas of High-chlorinated Industrial Waste

作　　者：丁伟杰 DING Weijie

机构地区：[1]上海泓济环保科技股份有限公司,上海201906

出　　处：《上海化工》2021年第4期21-26,共6页Shanghai Chemical Industry

摘　　要：利用Aspen Plus软件就高含氯化工废料焚烧烟气中的氯化氢吸收并副产盐酸的过程进行了详尽的模拟计算,尝试采用增湿降温、换热降温和绝热吸收的组合工艺,在满足环保排放要求的前提下实现副产盐酸质量分数最大化。研究表明,采用喷射工艺水,利用其蒸发潜热来降低烟气温度,将大幅增加烟气中的水汽浓度,从而遏制副产盐酸的提浓。模拟计算结果表明,采用烟气二次换热降温法,最高可采出质量分数为19.0%的盐酸。A comprehensive simulation calculation based on Aspen Plus is carried out to the HCl absorption process,aiming to recovery hydrochloric acid in the high chloride-containing chemical waste incineration system.Humidity cooling,heat exchange cooling and adiabatic absorption process are applied to maximize the mass concentration of hydrochloric acid on the basis of environmental emission requirements.Studies has shown that spraying water and using its evaporation latent heat to reduce the flue gas temperature will significantly increase the water vapor concentration in the flue gas,thereby curbing the hydrochloric acid concentration.The simulation calculation results show that the maximal mass concentration of 19.0%hydrochloric acid can be recovered by using indirect heat exchange cooling method.

关 键 词：含氯废料 焚烧 盐酸 绝热吸收 

分 类 号：X78[环境科学与工程—环境工程]