关键词: FCC汽油, 烷基化, 脱硫, 中型试验

Abstract: Since hydrodesulfurization (HDS) of FCC gasoline is a high investment and high operation cost process, a lower cost desulfurization process through alkylation was tested by Wuxi Bluestar Petrochemical Company and Southwest Petroleum University (SWPU). A pilot plant test using SW-1 catalyst developed by SWPU and FCC gasoline from Wuxi Bluestar Petrochemical Company was presented. Test results showed that under the optimum conditions of a reaction temperature of 60 ℃, a pressure range of 0.5~0.8 MPa, a LHSV of 3.77 h-1 and using 100 mL SW-1 catalyst to process 27.5 L gasoline feedstock, the sulfur content of treated gasoline was 191 μg/g and the yield was 87.90%. The treated gasoline was blended with straight-run gasoline, C9 aromatics and MTBE in the mass ratios of 67:15:10:8 to produce automobile gasoline. This gasoline product had a RON of 93.4, a density of 0.721 5 g/cm3 and a sulfur content of 142 μg/g, meeting the sulfur requirement of National Standard for Automobile Gasoline Ⅲ. As compared with HDS process, this process is simple, easy to operate, less octane loss, lower investment/operation cost and lower energy consumption.

Key words: FCC gasoline, alkylation, desulfurization, pilot plant test