硫磺制酸装置尾气达标排放的技术探讨

Discussion on tail gas emission from sulphur-burning sulphuric acid plant

介绍了氨法脱硫的原理和工艺流程。分析了云南天安化工有限公司3套氨法尾气脱硫系统运行过程中存在的问题。对增加碱水洗涤吸收喷头、调整工艺指标、引入超重力机吸收洗涤和增加电除雾器等技改措施进行了探讨。通过技术改造,使关键指标SO_2、硫酸雾、逃逸氨满足国标要求。

The principle and technological process of ammonia desulphurization are introduced.The problems existing in the operation of 3 sets of ammonia tail gas desulphurization system in Yunnan Tianan Chemical Co.,Ltd.are analyzed.The technical improvement measures such as adding alkaline water washing and absorbing nozzle,adjusting process index,introducing high gravity machine absorbing and washing and increasing electric demister are discussed.Through technical transformation,the key indicators SO2,sulphuric acid fog and escaped ammonia reach the requirements of the national standard.