Hydrocarbon dehydrogenation process

C - Chemistry – Metallurgy – 10 – G

Patent

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C10G 65/02 (2006.01) C10G 45/02 (2006.01)

Patent

CA 2753127

A process for the catalytic dehydrogenation of a C3+ feed hydrocarbon. The hydrocarbon feedstock is initially divided and a first portion of the feedstock is introduced into a first dehydrogenation reaction zone operated without oxidative reheat and the resulting effluent is introduced into a second dehydrogenation reaction zone operated without oxidative reheat. The resulting effluent from the second dehydrogenation reaction zone is introduced along with a second portion of the feedstock into a third dehydrogenation reaction zone operated with oxidative reheat.

Cette invention concerne un procédé de déshydrogénation catalytique d'une charge d'hydrocarbures en C3+. La charge d'hydrocarbures est divisée au départ, une première partie de cette charge étant introduite dans une première zone de réaction de déshydrogénation fonctionnant sans postcombustion oxydative et l'effluent obtenu étant introduit dans une seconde zone de réaction de déshydrogénation fonctionnant sans postcombustion oxydative. L'effluent sortant de la seconde zone de réaction de déshydrogénation est introduit en même temps qu'une seconde partie de la charge dans une troisième zone de réaction de déshydrogénation fonctionnant avec postcombustion oxydative.

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