COS在氧化铝基硫磺回收催化剂上吸附脱附性能研究  

Study on adsorption and desorption performance of COS on alumina-based sulphur recovery catalyst

作　　者：徐翠翠[1] 刘增让[1] 刘爱华[1] 刘剑利[1] 陶卫东[1] XU Cuicui;LIU Zengrang;LIU Aihua;LIU Jianli;TAO Weidong(SINOPEC Research Institute of Qilu Branch,Zibo,Shandong,255400,China)

机构地区：[1]中国石油化工股份有限公司齐鲁分公司研究院,山东淄博255400

出　　处：《硫酸工业》2020年第9期32-37,共6页Sulphuric Acid Industry

摘　　要：通过对COS在新鲜催化剂干燥处理后、蒸汽处理后、新鲜催化剂原样和失活催化剂上进行吸附-脱附试验,考察COS在氧化铝基硫磺回收催化剂上的吸附和脱附性能,为硫磺回收催化剂的开发和应用提供技术支撑。试验表明,蒸气处理会显著抑制COS在催化剂表面的吸附;表面适量的吸附水会极大促进COS的水解反应,即使在室温下也能发生显著的COS水解反应;COS水解反应是一个快速的可逆反应;COS在新鲜催化剂上主要发生物理吸附,较难发生化学吸附;失活催化剂的硫酸盐化对COS的水解反应影响显著。The adsorption and desorption performance of COS on the alumina-based sulphur recovery catalyst was investigated by performing adsorption-desorption tests on the fresh catalyst,dried fresh catalyst,steam-treated fresh catalyst and dried deactivated catalyst,which can provide technical support for the development and application of sulphur recycled catalysts.Experiments show that steam treatment can significantly inhibit the adsorption of COS on the catalyst surface;an appropriate amount of adsorbed water on the surface will greatly promote the hydrolysis reaction of COS,and significant COS hydrolysis reaction can occur even at room temperature;COS hydrolysis reaction is a fast and reversible reaction;COS mainly undergoes physical adsorption on fresh catalysts,and chemical adsorption is more difficult;sulfation of deactivated catalysts has a significant impact on the hydrolysis reaction of COS.

关 键 词：硫磺回收 氧化铝基催化剂 COS 吸附 脱附 

分 类 号：TQ125.116[化学工程—无机化工]