Dehydrogenation of dehydrogenatable hydrocarbons
This patent describes a process for dehydrogenation of a dehydrogenation hydrocarbon with separate and intermediate selective oxidation of hydrogen which comprises the steps of: (a) contacting the hydrocarbon with a dehydrogenation catalyst; (b) removing the first-reaction dehydrogenation zone effluent stream from the first-reaction dehydrogenation zone; (c) passing the effluent stream of step (b) to a second-reaction oxidation zone which is separate and discrete from the first-reaction dehydrogenation zone; (d) contacting the first reaction dehydrogenation zone effluent in the second-reaction oxidation zone with an oxygen-containing gas in the presence of an oxidation catalyst; (e) withdrawing the unconverted and dehydrogenated hydrocarbons from the second-reaction oxidation zone having an increased temperature with respect to the temperature of the first-reaction dehydrogenation zone effluent; (f) passing the second-reaction oxidation zone product stream of step (e) to a third-reaction dehydrogenation zone containing a dehydrogenation catalyst comprising an alkaline metal-promoted iron compound at dehydrogenation conditions to produce dehydrogenated hydrocarbons; and, (g) withdrawing and recovering the dehydrogenated hydrocarbons.
- Assignee:
- UOP Inc., Des Plaines, IL
- Patent Number(s):
- US 4812597
- OSTI ID:
- 5952121
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
DEHYDROGENATION
ELEMENTS
HYDROCARBONS
HYDROGEN
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
RECOVERY