Process for conversion of propane or butane to gasoline
AssigneeUop LLC
InventorsDennis J. Ward, Bipin V. Vora
Life of this patent
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Abstract
A multi-step hydrocarbon conversion process for producing gasoline from propane or butane is disclosed. The feed hydrocarbon is passed into a dehydrogenation zone and the entire dehydrogenation zone effluent including hydrogen and light by-products is then passed into a catalytic condensation zone wherein the resulting olefins are converted into dimers and trimers. The condensation zone effluent stream is passed into a separation zone in which the dimers and trimers are concentrated into a product stream, with unconverted feed hydrocarbon and hydrogen being recycled to the dehydrogenation zone.
Claims5
A hydrocarbon conversion process which comprises the steps of:
- (a) passing a feed stream comprising a butane and a hereinafter characterized recycle stream into a dehydrogenation zone operated at butane dehydrogenation conditions and thereby forming a dehydrogenation zone effluent stream comprising hydrogen, a butane and a butylene;
- (b) passing the entire dehydrogenation zone effluent stream into a catalytic condensation zone operated at conditions which effect the conversion of butylene into C.sub.8 hydrocarbons and thereby forming a catalytic condensation zone effluent stream which comprises hydrogen, a butane and C.sub.8 hydrocarbons;
- and,
- (c) separating the catalytic condensation zone effluent stream into a vent gas stream comprising hydrogen, said recycle stream, which comprises hydrogen and a butane, and a product stream which comprises C.sub.8 hydrocarbons.
A hydrocarbon conversion process which comprises the steps of:
- (a) passing a feed stream comprising a propane and a hereinafter characterized recycle stream into a dehydrogenation zone operated at propane dehydrogenation conditions and thereby forming a dehydrogenation zone effluent stream comprising hydrogen, propane and propylene;
- (b) passing the entire dehydrogenation zone effluent stream into a catalytic condensation zone operated at conditions which effect the conversion of propylene into C.sub.6 and C.sub.9 hydrocarbons and therby forming a catalytic condensation zone effluent stream which comprises hydrogen, propane and C.sub.6 and C.sub.9 hydrocarbons;
- and
- (c) separating the catalytic condensation zone effluent stream into a vent gas comprising hydrogen, said recycle stream which comprises hydrogen and propane, and a product stream which comprises C.sub.6 and C.sub.9 hydrocarbons.
Dependencies are inferred from the claim text.