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FDFCC Process of Directly Producing Clean Gasoline

Wang Wenke,Tang Haitao,Wang Longyan(Research Institute of Petrochemical Engineering Technology of LPEC,Luoyang,Henan,471003,China)  
The technical features of flexible dual-riser fluid catalytic cracking(FDFCC)process are presented for refineries to choose an efficient technology for directly producing clean gasoline from FCC naphtha.With the application of this new technology,olefin content in GCC naphtha can be reduced to less than 18%,while aromatics content can be increased by more than 13 percentages and sulfur content decreased by 20 to 30% without any decrease of octane numbers.Refineries can select one of the most suitable FDFCC process schemes to revamp the existing FCC units for directly producing clean gasoline meeting quality requirements of European Grade Ⅲ or the current domestic clean fuel specifications.
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