对钢厂活性焦解析烟气制酸净化系统设计的探讨  

Discussion on the design of purification system for acid making flue gas desorbed from activated coke in steel plants

作　　者：肖保正 XIAO Baozheng(Yangzhou Jinyuan Chemical Equipment Co.,Ltd.,Yangzhou,Jiangsu,225002,China)

机构地区：[1]扬州金圆化工设备有限公司,江苏扬州225002

出　　处：《硫酸工业》2025年第1期32-35,42,共5页Sulphuric Acid Industry

摘　　要：针对钢厂活性焦解析烟气制酸装置产品显现浅茶色的问题,推荐采用文氏管—填泡塔—动力波洗涤器—两级电除雾器稀酸洗净化工艺;建议含氯高的场合,稀硫酸冷却器的换热板片选用Hastelloy C-276合金材质;针对烟尘的特殊性,对斜管沉降器的结构设计提出了改进措施,推荐采用拦截式稀硫酸过滤器;对烟气的杂质脱除,不建议设置水玻璃除氟单元;建议建设单位提供精准信息,为制酸装置提供精准的设计条件;对净化工艺管道的选材提出了方案;针对一级净化循环泵叶轮磨蚀严重的问题,提出采用碳化硅材质的叶轮或者对超高分子聚乙烯材质的叶轮添加耐磨组分。In response to the issue of light brown coloration in the acid products produced by the process using activated coke desorbed flue gas in steel mills,it is recommended to implement a purification process consisting of“Venturi tube-bubble filling tower-dynawave scrubber-two electrostatic-demisters dilute acid washing”.It is recommended to use Hastelloy C-276 material for the heat exchange plates of dilute sulphuric acid coolers in situations with high chlorine content.Improvement measures have been proposed for the structural design of inclined tube settlers,taking into account the unique characteristics of smoke and dust,and it is advised to employ intercepting dilute sulphuric acid filters.The installation of a water glass solid fluorine unit for the impurity removal process of flue gas is not recommended.Furthermore,it is suggested that the construction unit provide accurate information to facilitate the precise design of the acid production unit.A design scheme for the selection of materials for purification process pipelines has also been proposed.To address the significant wear and tear on the impeller of the primary purification circulation pump,it is recommended to use silicon carbide impellers or to incorporate wear-resistant components into impellers made of ultra-high molecular weight polyethylene.

关 键 词：文氏管 空心塔 填泡塔 动力波洗涤器 水玻璃除氟 碳化硅 

分 类 号：TQ111.16[化学工程—无机化工]