明确国内某炼厂以CDTECH为代表的选择性加氢脱硫工艺和以S Zorb为代表的吸附脱硫工艺在2套催化裂化汽油脱硫装置应用过程中的优劣。从工艺原理及流程、原料及产品性质、物料平衡、能耗及技术经济性等方面进行了对比分析,明确2种催化裂化汽油脱硫工艺的适应性。通过对比分析可知,CDTECH工艺流程充分考虑催化裂化汽油中硫化物及烯烃的分布特点,催化蒸馏技术具有较高转化率及选择性的优势,但存在流程复杂、产品收率略低、能耗高等不利影响。基于催化蒸馏技术的高效能优势,CDTECH工艺的汽油产品品质(低烯烃、高醚化物)、辛烷值损失及利润均较S Zorb工艺优,具有较好的应用性。

The advantages and disadvantages of CDTECH as a representative of selective hydrodesulfurization process and S Zorb as a representative of adsorptive desulfurization process in the application process of FCC gasoline desulfurization units are clarified.The adaptability of these two FCC gasoline desulfurization processes is clarified through comparing the process principle and flow,the properties of feedstocks and products,material consumption,energy consumption and technical economy.Through comparative analysis,it can be concluded that CDTECH process flow fully considers the distribution characteristics of sulfides and olefins in FCC gasoline,and the catalytic distillation in the process has higher conversion and selectivity advantages,which also suffers adverse effects such as complex process,slightly low products yield and high energy consumption.Based on the advantages of high efficiency of catalytic distillation technology,CDTECH process is better than S Zorb process in gasoline product quality (containing less olefins but more etherates),octane number loss and profits,exhibiting better applicability.