Improved fcc reactor and riser design for short contact-time...

C - Chemistry – Metallurgy – 10 – G

Patent

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Details

C10G 11/18 (2006.01)

Patent

CA 2723975

The present invention is an improved design and operation of a short contact time Fluid Cat-alytic Cracking (FCC) Reactor wherein the upper inter-nal riser and a lower internal riser are in fluid connec-tion with one another and provide an improved disen-gaging zone for entraining the vapors from the dilute phase area of the FCC reactor. Detailed preferred em-bodiments include improvements over the prior art to the internal central riser, riser termination apparatus, cyclone separators, and a coke mitigation baffle sys-tem, as well as associated improved fluid catalytic cracking processes utilizing the novel reactor design.

La présente invention se rapporte à une conception et un fonctionnement perfectionnés dun réacteur à craquage catalytique fluide (FCC) à temps de contact court. La colonne montante intérieure supérieure et une colonne montante intérieure inférieure sont en communication de fluide lune avec lautre et offrent une zone de libération perfectionnée pour entraîner les vapeurs provenant de la zone à phase diluée du réacteur FCC. Des modes de réalisation préférés détaillés comprennent des perfectionnements, par rapport à létat de la technique, apportés à la colonne montante centrale intérieure, à lappareil de terminaison de colonne montante, aux séparateurs de cyclone, et à un système de déflexion à atténuation de coke, ainsi quà des processus de craquage catalytique fluide perfectionnés associés utilisant la nouvelle conception de réacteur.

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