Hydrocarbon cracking with positive reactor temperature gradient

Details Hydrocarbon cracking with positive reactor temperature gradient Hydrocarbon cracking with positive reactor temperature gradient

C - Chemistry, Metallurgy

10

G

C10G 11/00 (2006.01) C07C 4/06 (2006.01) C10G 51/02 (2006.01)

Patent

CA 2290460

The invention provides an improvement in processes for cracking hydrocarbons to prime olefins, ethylene and propylene, which comprises applying a positive temperature gradient across a catalyst contact zone. The temperature gradient may be uniform or stepwise, may be one reactor or a series of reactors so long as at least one down stream cracking zone is operated at a higher temperature than an upstream zone.

L'invention concerne une amélioration relative à des processus de craquage d'hydrocarbures en oléfines principales, éthylène et proylène, consistant à appliquer un gradient de température positif dans une zone de contact de catalyseur. Le gradient de température peut être uniforme ou par étape, avec un réacteur ou une série de réacteurs tant qu'au moins une zone de craquage aval fonctionne à une température supérieure à celle d'une zone amont.

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