摘要
某煤化工公司硫回收尾气处理装置采用氨法进行脱硫。由于设计原因造成装置运行不畅,烟气出口不达标,无法实现SO2的正常脱除,气溶胶、氨逃逸现象严重,后硫铵系统无法产出硫酸铵晶体。主要原因为该系统所处理烟气为高温、高水含量和高硫含量,不能按照一般锅炉烟气脱硫方式进行设计。经过重新对现有脱硫塔进行设计改造,通过塔内强制冷却和塔外硫酸铵溶液蒸发结晶的方式,实现烟气达标排放和后硫铵系统产出硫酸铵晶体正常。
An ammonia desulfurization technology is used in a company’s sulfur recovery tail gas treatment device. Because of the design reasons, the operation of the device is not smooth and the flue gas exit cannot reach the standard;the normal removal of SO2 cannot be realized;the escape of aerosols and ammonia is serious and ammonium sulphate system cannot produce ammonium sulphate crystal. The main reason is that the flue gas treated by the system is high temperature, high water content and high sulfur content, so that it cannot be carried out according to the general boiler flue gas desulphurization method. After the technological transformation of the existing desulfurization tower, the emission of the flue gas and the crystal of ammonium sulphate are achieved by forced cooling in the tower and the evaporation and crystallization of ammonium sulfate solution outside the tower.
出处
《环境保护前沿》
2022年第2期272-277,共6页
Advances in Environmental Protection
