长周期稳定运转的催化裂化汽油选择性加氢脱硫技术

摘要

The 2nd generation selective hydrodesulfurization technology(RSDS-Ⅱ)for FCC gasoline has been developed and commercialized.The technology uses the stabilized gasoline as feed,sets a prereactor to remove diene and adopts a feed filter.These measures guarantee the HDS unit to run consecutively and stably for a long period.The commercial results show that RSDS-Ⅱ technology can produce clean gasoline with sulfur content less than 150 μg/g or 50 μg/g and the octane number loss of product is less.Due to high selectivity and good stability,RSDS-Ⅱ technology can meet the requirement of refinery gasoline upgrading.%确立了第二代催化裂化汽油选择性加氢脱硫(RSDS-Ⅱ)的工艺技术路线,并提出工业装置长周期稳定运转的技术措施,即采用催化裂化稳定汽油作为原料、在加热炉前设置低温脱二烯烃反应器、设置原料过滤器等.工业应用结果表明,RSDS-Ⅱ技术可用于生产硫含量满足国Ⅲ或国Ⅳ排放标准的优质汽油,且产品辛烷值损失小,同时装置可以长周期稳定运行,完全可以满足炼油厂汽油质量升级的需要.