Method for oxygen addition to oxidative reheat zone of hydrocarbon dehydrogenation process
This patent describes a process for the catalytic dehydrogenation of a C/sub 3/-plus dehydrogenable hydrocarbon wherein a feed stream comprising a feed hydrocarbon is passed into a first bed of dehydrogenation catalyst maintained at dehydrogenation conditions and a dehydrogenation zone effluent stream comprising hydrogen, the feed hydrocarbon and a product hydrocarbon is produced, the dehydrogenation zone effluent stream and an oxygen-containing gas stream are admixed and passed into a separate bed of selective hydrogen oxidation catalyst maintained at oxidation promoting conditions and an oxidation zone effluent stream is produced, and the oxidation zone effluent stream is passed into a second bed of dehydrogenation catalyst. The improvement described here comprises cooling the dehydrogenation zone effluent stream by direct or indirect heat exchange and increasing the amount of heating which is required in the bed of oxidation catalyst over that which would be necessary to achieve the same oxidation zone effluent stream temperature without the cooling.
- Assignee:
- UOP, Inc., Des Plaines, IL
- Patent Number(s):
- US 4599471
- OSTI ID:
- 5331744
- Resource Relation:
- Patent File Date: Filed date 16 Sep 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HYDROCARBONS
DEHYDROGENATION
CATALYSIS
CATALYSTS
CHEMICAL REACTION YIELD
COOLING
GAS FLOW
HEAT TRANSFER
HEATING
HYDROGEN
OXIDATION
OXYGEN
TEMPERATURE DEPENDENCE
CHEMICAL REACTIONS
ELEMENTS
ENERGY TRANSFER
FLUID FLOW
NONMETALS
ORGANIC COMPOUNDS
YIELDS
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)