Improved short contact time fcc process

Details Improved short contact time fcc process Improved short contact time fcc process

C - Chemistry, Metallurgy

10

G

C10G 11/18 (2006.01)

Patent

CA 2603717

This invention relates to a short contact time (SCT) fluid catalytic cracking (FCC) process for improving the yield of distillates and gasoline. An SCT FCC process combines staging the FCC conversion process with interstage molecular separation of multi-ring aromatic species wherein separation of cat bottoms and recycling the separated stream containing saturates and 1- and 2-ring aromatics to the FCC unit results in improved yields of gasoline and other distillates while decreasing bottoms yields.

La présente invention concerne un processus de craquage catalytique fluide (FCC) à court temps de contact (SCT) permettant d'améliorer le rendement de distillats et d'essence. Un processus FCC SCT combine un processus de conversion FCC et une séparation moléculaire intermédiaire d'espèces aromatiques à noyaux multiples. La séparation des résidus de catalyseur et le recyclage du courant séparé qui contient les composés saturés et les composés aromatiques à 1 et 2 noyaux vers l'unité FCC permettent d'obtenir de meilleurs rendements d'essence et d'autres distillats, tout en réduisant les rendements de résidus.

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