Abstract: The new generation sulfur transfer additive RFS09 was applied on the partial combustion FCC unit in PetroChina Guangxi Petrochemical Company. The results show that when the average sulfur content in feedstock is 0.338% and RFS09 is added at 5% of the fresh catalyst, SO2 in the flue gas from CO boiler is less than 850mg/m3, which meets the requirment of specifications. The SO2 removal rate is higher than 50% , calculated based on the SO2 emission about 1 800 mg/m3 without additive. In addition, during the trail of RFS09, the yields of total liquid products, slurry and coke change little. The particle concentration in flue gas remains constant and even decreases slghtly, and solid content of slurry also remains constant. Key Words: FCC; partial burn regeneration; flue gas; sulfur transfer additive

Key words: FCC, partial combustion regeneration, flue gas, sulfur transfer additive