The superiority of CDOS-FRCN Ⅱ technology applied for producing ultra-low sulfur gasoline was introduced.The splitter process(LCN/HCN) of gasoline was cut out in the technology.The technology has advantages in simple process,flexible operation,less investment,lower energy consumption.It used a new nano TiO2-based HDDO-100/HDOS-200/HDMS-100 catalyst system,which has high activity in desulfurization,selectivity and stability and is suitable for full distillate hydrodesulfurization.The catalyst system showed excellent activity and stability in treating DCC gasoline or FCC gasoline with high diene and olefin content.A new DCC gasoline hydrogenation unit with 0.5 Mt/a in CNOOC Dongfang Petrochemical Co.Ltd.,achieves China Ⅴ emission standard gasoline product using the technology.%介绍了DCC汽油全馏分选择性加氢脱硫(CDOS-FRCNⅡ)工艺技术生产超低硫汽油的优越性,该工艺省去了催化裂化汽油轻重馏分(LCN/HCN)切割过程,具有流程简单、操作灵活、投资少、耗能低的特点.该工艺配套的新型纳米钛基催化剂HDDO-100/ HDOS-200/HDMS-100具有高脱硫活性、高选择性和稳定性,适用于全馏分加氢脱硫工艺,在处理高二烯烃、高烯烃含量的FCC汽油及DCC汽油中表现出优异的活性和稳定性.在新建的500 kt/a DCC汽油加氢装置上,采用CDOS-FRCNⅡ工艺技术及配套催化剂,实现了DCC汽油的产品升级,生产出符合国Ⅴ排放标准的汽油.
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