Method of operating a dehydrogenation reactor system

Details Method of operating a dehydrogenation reactor system Method of operating a dehydrogenation reactor system

2007-10-16

2007-10-16

Dang, Thuan Dinh (Department: 1764)

Chemistry of hydrocarbon compounds

Miscellaneous considerations

Reaction stopping or retarding

C585S440000, C585S444000, C585S445000

Reexamination Certificate

active

10897248

ABSTRACT:
Described is a method for operating and shutting down a dehydrogenation reactor that contains a volume of dehydrogenation catalyst. After termination of the introduction of a dehydrogenation feed into the dehydrogenation reactor that is operated under dehydrogenation reaction conditions, a first cooling fluid comprising steam is introduced into the reactor for a first time period sufficient to cool the dehydrogenation catalyst contained in the dehydrogenation reactor to a second temperature. The introduction of the first cooling fluid is terminated followed by the introduction of a second cooling fluid for a second time period sufficient to cool the dehydrogenation catalyst contained in the dehydrogenation reactor to a third temperature that allows for the handling and removal of the dehydrogenation catalyst from the dehydrogenation reactor.

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International Search Report for PCT/US2004/033614 of Apr. 11, 2005.
Written Opinion of PCT/US2004/033614 of Apr. 11, 2005.

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