冶炼烟气制酸中催化剂粉化原因与控制对策研究  

Causes and solutions of catalyst chalking in sulphuric acid production with smelting gas

作　　者：史万敬[1] 常全忠[1] 宋莹[1] 程华花[1] 

机构地区：[1]金川集团股份有限公司化工厂,甘肃金昌737104

出　　处：《硫酸工业》2012年第6期5-11,共7页Sulphuric Acid Industry

摘　　要：对700 kt/a冶炼烟气制酸钒催化剂的粉化原因进行了分析,总结出催化剂粉化的直接原因是转化温度低、烟气水含量高。针对制酸系统烟气浓度不稳定、水含量高、二级电除雾器出口烟气温度高、干燥效果不理想等问题采取相应处理措施,并对催化剂进行筛分重装处理,改造后转化工序总压降降至4.2～4.5 kPa、总转化率提高至99.31%～99.76%。The causes of vanadium catalyst chalking in a 700 kt/a sulphuric acid plant based on off-gas were analyzed. It was concluded that two direct causes of catalyst chalking were too low temperature and too high moisture content in converter. Some measures were taken to dealt with the problems such as unstable sulphuric dioxide concentration and high moisture content in the inlet gas, high outlet gas temperature of secondary ESP and inefficient drying. Catalyst was screened and reinstalled. After that, total pressure drop of conversion section was reduced to 4.2- 5.4 kPa and the total conversion raised to 99.31% - 99.76%.

关 键 词：冶炼烟气 硫酸生产 催化剂粉化 温度控制 水含量 转化率 

分 类 号：TQ111.14[化学工程—无机化工]