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US 5,895,831 AGranted
Solid catalyst alkylation process
AssigneeUop LLC
InventorsRobert S. Brasier, Paul A. Sechrist, Dale J. Shields
Life of this patent
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Abstract
A process for the production of motor fuel alkylate by reacting an alkene hydrocarbon, an alkane hydrocarbon and a hydrogen halide with a solid alkylation catalyst disposed in swing beds. The spent solid alkylation catalyst is regenerated in a highly integrated flow scheme associated with the alkylate recovery.
Claims11
An alkylation process for the production of motor fuel alkylate which process comprises:
- (a) reacting an alkene hydrocarbon, an alkane hydrocarbon and a hydrogen halide at alkylation conditions in a first catalytic reaction zone to produce a hydrocarbon stream comprising alkylate, unreacted alkane hydrocarbon and alkyl halide;
- (b) separating said hydrocarbon stream comprising alkylate, unreacted alkane hydrocarbon and alkyl halide in a separation zone to produce a hydrocarbon product stream comprising alkylate;
- (c) introducing an alkane hydrocarbon stream comprising n-alkane hydrocarbon and i-alkane hydrocarbon, and hydrogen halide into said separation zone to produce a stream comprising n-alkane hydrocarbon and a stream comprising i-alkane hydrocarbon and hydrogen halide;
- (d) passing at least a portion of said stream comprising i-alkane hydrocarbon and hydrogen halide produced in step (c) to step (a) to provide at least a portion of said alkane hydrocarbon;
- (e) passing n-alkane hydrocarbon to a second catalytic reaction zone to heat and flush said second catalytic reaction zone containing deactivated catalyst in preparation for regeneration of said deactivated catalyst;
- (f) withdrawing a stream comprising alkane hydrocarbon and alkyl halide from said separation zone and passing at least a portion of said stream comprising alkane hydrocarbon and alkyl halide, and hydrogen to a third catalytic reaction zone containing heated deactivated catalyst to thereby regenerate said heated deactivated catalyst and to produce an effluent stream comprising alkane hydrocarbon and hydrogen halide;
- and
- (g) passing at least a portion of said stream comprising i-alkane hydrocarbon and hydrogen halide produced in step (c) to cool and flush a fourth catalytic reaction zone containing newly regenerated catalyst.
5 more elements
An alkylation process for the production of motor fuel alkylate which process comprises:
- (a) reacting an alkene hydrocarbon, an alkane hydrocarbon and a hydrogen halide at alkylation conditions in a first catalytic reaction zone to produce a hydrocarbon stream comprising alkylate, unreacted alkane hydrocarbon and alkyl halide;
- (b) separating said hydrocarbon stream comprising alkylate, unreacted alkane hydrocarbon and alkyl halide in a first separation zone to produce a hydrocarbon product stream comprising alkylate;
- (c) introducing an alkane hydrocarbon stream comprising n-alkane hydrocarbon and iso-alkane, and hydrogen halide into said first separation zone to produce a stream comprising n-alkane hydrocarbon and a stream comprising iso-alkane hydrocarbon and hydrogen halide;
- (d) passing at least a portion of said stream comprising iso-alkane hydrocarbon and hydrogen halide produced in step (c) to step (a) to provide at least a portion of said alkane hydrocarbon;
- (e) passing n-alkane hydrocarbon to a second catalytic reaction zone to heat and flush said second catalytic reaction zone containing deactivated catalyst in preparation for regeneration of said deactivated catalyst;
- (f) withdrawing a stream comprising alkane hydrocarbon and alkyl halide from said first separation zone and passing at least a portion of said stream comprising alkane hydrocarbon and alkyl halide, and hydrogen to a third catalytic reaction zone containing heated deactivated catalyst to thereby regenerate said heated deactivated catalyst and to produce an effluent stream comprising alkane hydrocarbon and hydrogen halide;
- (g) passing at least a portion of said effluent stream comprising alkane hydrocarbon and hydrogen halide from step (f) and at least a portion of the n-alkane effluent from step (e) to a second separation zone to produce a stream comprising n-alkane, and a vapor stream comprising hydrogen and hydrogen halide;
- (h) passing at least a portion of said stream comprising n-alkane produced in step (g) to step (e) to provide at least a portion of said n-alkane hydrocarbon;
- (i) passing at least a portion of said vapor stream comprising hydrogen and hydrogen halide produced in step (g) to step (f) to provide at least a portion of said hydrogen;
- and
- (j) passing at least a portion of said stream comprising iso-alkane hydrocarbon and hydrogen halide produced in step (c) to a fourth catalytic reaction zone containing freshly regenerated catalyst to thereby cool said freshly regenerated catalyst to alkylation temperature.
8 more elements
Dependencies are inferred from the claim text.