催化裂化汽油选择性加氢脱硫RSDS-Ⅱ技术的开发及应用

在中试装置上开展了RSDS-Ⅱ技术对不同原料油的适应性试验，结果表明：采用RSDS-II技术生产硫含量小于50?g/g的汽油，原料为高硫、高烯烃的常规FCC汽油时，RON损失不大于1.8个单位；原料为高硫MIP汽油时，RON损失不大于0.9个单位；原料为中、低硫MIP汽油时，RON损失不大于0.2个单位；对于中、低硫含量的MIP汽油或催化裂化原料经过预加氢处理后的MIP汽油，采用RSDS-II生产品硫含量小于10?g/g，满足未来国V标准的汽油时，RON损失不大于1个单位，说明RSDS-II技术对多种原料油具有很好的适应性。RSDS-II技术在多套工业装置上成功工业应用，且实现了装置的连续稳定运转。其中上海石化的应用结果表明，以烯烃体积分数38.7%～43.3%、硫含量250μg/g～470μg/g的催化裂化汽油为原料，经过RSDS-Ⅱ技术处理后汽油产品硫含量为33?g/g～46?g/g，RON损失0.3～0.6个单位，装置连续稳定运转超过30个月。工业应用情况表明RSDS-II技术完全可以满足炼油厂汽油质量升级的需要。

Development and CommercialApplication of RSDS-II Technology for Selective Hydrodesulfurization of FCC Naphtha

The FCC naphtha selective hydrodesulfurization technology (RSDS-II) has been tested with different feedstocksin pilot scale. The results show that RSDS-II technology is viable in terms of its adaptability to different feedstocks. To producegasoline with a sulfur content of less than 50μg/g by the RSDS-II technology, the gasoline RON loss is less than 1.8, 0.9and 0.2 units, respectively, upon processing the conventional high-sulfur and high-olefin FCC naphtha, the high-sulfur MIPnaphtha, and the medium-sulfur or low-sulfur MIP naphtha. Upon using the naphtha produced from pre-hydrotreated FCCfeedstock as the RSDS-II feedstock to manufacture gasoline with a sulfur content of lower than 10 μg/g, the RON loss doesnot exceed 1.0 unit. The RSDS-II technology has been commercialized successfully at many refineries. The result of operatingcommercial RSDS-II unit at the Shanghai Petrochemical Company has revealed that upon processing a feedstock containing38.7 v%—43.3 v% of olefins and 250—470 mg/g of sulfur, the sulfur content in the treated gasoline ranges from 33μg/g to 46 μg/g and the RON loss is equal to only 0.3—0.6 units. Till now this RSDS-II unit has been operating smoothlyover 30 months. Thanks to its high HDS activity and good selectivity, the RSDS-II technology can meet the refinery’s needsfor adequate upgrading of gasoline.