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The technical features and commercial test results of flexible dual-riser fluidized catalytic cracking (FDFCC) process are presented for refiners to choose an efficient process to upgrade FCC naphtha and boost propylene production in a RFCC unit. The commercial test results indicate that the olefin content of catalyti-cally cracked gasoline can be significantly reduced to less than 20 v%, while sulfur content reduced by 15%. 25% and RON increased by 0.5-2 units in a RFCC unit. In addition, propylene yield and the production ratio of diesel to gasoline can also be remarkably enhanced in the RFCC unit.
The commercial features and commercial test results of flexible dual-riser fluidized catalytic cracking (FDFCC) process are presented for refiners to choose an efficient process to upgrade FCC naphtha and boost propylene production in a RFCC unit. The commercial test results indicate that the olefin content of catalytically-cally cracked gasoline can be significantly reduced to less than 20% v while sulfur content reduced by 15%. 25% and RON increased by 0.5-2 units in a RFCC unit. diesel to gasoline can also remarkably enhanced in the RFCC unit.