Fcc catalyst stripper

Details Fcc catalyst stripper Fcc catalyst stripper

C - Chemistry, Metallurgy

10

G

C10G 11/18 (2006.01)

Patent

CA 2195305

A fluidized catalytic cracking (FCC) process and apparatus uses a catalyst stripper with slant trays (140) or shed trays having "downcomers" (145). Downcomers (145), vertical catalyst/gas contacting elements, provide a vertical, countercurrent region for catalys/stripping vapor contact. The downcomers improve stripping effectiveness.

L'invention se rapporte à un procédé de craquage catalytique fluidisé (FFC) et à un appareil comportant une colonne d'extraction de catalyseur à plateaux inclinés (140) ou plateaux de déversement comportant des "trop-pleins" (145). Ces trop-pleins (145), éléments verticaux venant en contact avec le catalyseur/gaz, forment une région verticale à contre-courant qui permet le contact avec le catalyseur/la vapeur d'extraction. Ces trop-pleins améliorent l'efficacité d'extraction.

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