硫磺回收及尾气加氢催化剂研究进展

RESEARCH HEADWAY OF SULFUR RECOVERY AND TAIL GAS HYDROGENATION CATALYSTS

介绍了硫磺回收及尾气加氢催化剂的反应机理及制备工艺。总结了催化剂的分类及其特性,对目前国内外主要工业化催化剂的应用效果进行了对比。多功能硫磺回收催化剂具有较好的克劳斯反应活性、有机硫水解活性、脱"漏O2"保护功能以及抗硫酸盐化能力;低温克劳斯尾气加氢催化剂具有节省装置建设投资、降低装置能耗、环保与经济效益良好的特点。为了实现回收硫的优化生产,从技术经济角度出发,最有效的措施是发展功能齐全的系列化催化剂。

The reaction mechanism,preparation,classification and characteristics of catalysts for sulfur recovery and tail gas hydrogenation are reviewed.Some application results of main commercial catalysts worldwide are compared.It can be briefly summarized that multi-functional sulfur recovery catalyst having leakage O2 protection function and organic sulfur hydrolysis function,also exhibits good Claus reaction activity and high resistance to sulfation;novel low temperature Claus tail gas hydrogenation catalyst due to having high activity could reduce reaction temperature and energy consumption,thus,less investment,good environmental and economic benefit could be provided.To optimize sulfur recovery production,from the economic point of view,the most effective solution is to develop series of all-purpose catalysts.