S Zorb再生烟气处理技术开发

根据S Zorb汽油吸附脱硫装置再生烟气的组成特点,提出了将S Zorb再生烟气与Claus尾气混合引入尾气处理单元加氢反应器的技术路线,开发成功了适用于S Zorb再生烟气加氢处理的LSH-03低温高活性Claus尾气加氢催化剂。LSH-03催化剂在中国石化燕山分公司12 kt/a和沧州分公司20 kt/a硫磺回收装置上进行了工业应用,硫磺装置未进行任何改动,S Zorb再生烟气与Claus尾气混合后直接引入尾气加氢反应器。运行结果表明,硫磺装置操作稳定,能耗低,净化尾气中SO2排放量远低于国家环保标准960 mg/m3。采用此工艺技术处理S Zorb再生烟气,不需要增加投资,并且能降低硫磺装置能耗,回收硫资源,保护环境,是目前S Zorb再生烟气较理想的处理方式。

Development of S Zorb Regenerated Flue Gas Treatment Process

According to the composition of regenerated flue gas in S Zorb gasoline desulfurization units,a process was proposed,in which the S Zorb regenerated flue gas was mixed with Clause tail gas and then the mixed gas was introduced into the hydrogenation reactor of a tail gas treatment unit.A new catalyst,LSH-03,for the S Zorb regenerated flue gas hydrogenation with high activity at low temperature was developed and applied in the process in Yanshan Branch Co.and Cangzhou Branch Co.of SINOPEC,where the capacities of the sulfur recovery plants were 12 kt/a and 20 kt/a,respectively.The results show that the process operation is stable and the energy consumption is low.The SO2 emission in the purified tail gas was much lower than the national emission standard,960 mg/m3.No extra investment is needed for this process.