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US 5,689,015 AGranted
Method for the production of ether and alkylate from a paraffin feedstock
AssigneePhillips Petroleum Company
InventorsHarold R. Hunt, Mark D. Scharre, Warren M. Ewert
Life of this patent
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Abstract
A process for the production of ethers and alkylate from a paraffin feedstock. The process includes a novel arrangement of dehydrogenation, isomerization, separation, etherification and alkylation to provide such products.
Claims4
A process comprising the steps of:
- (A) separating a mixed butane stream comprising n-butane and isobutane into an isobutane stream, comprising isobutane, and an n-butane stream, comprising n-butane;
- (B) charging said n-butane stream to a dehydrogenation system for dehydrogenating n-butane to butene compounds, said dehydrogenation system producing a product stream containing butenes;
- (C) passing said product stream to an isomerization system for isomerizing linear butenes to isobutene to thereby produce an isomerate stream containing isobutenes;
- (D) passing said isomerate stream to an extractive distillation utilizing a suitable extraction solvent to separate butanes and butenes by providing a first overhead stream, containing butane, and a second overhead stream, containing butenes;
- (E) passing said second overhead stream to an etherification system for reacting isobutene with a primary alcohol to form ether and to thereby produce an ether product, containing ether, and a raffinate stream, containing linear butenes;
- and
- (F) passing said raffinate stream and said isobutane stream to an alkylation system for reacting isoparaffins and olefins to thereby produce an alkylate stream containing alkylate.
4 more elements
Dependencies are inferred from the claim text.