Treatment of olefin feed to paraffin alkylation
AssigneeCatalytic Distillation Technologies
InventorWilliam M. Cross
Life of this patent
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Abstract
A process for the removal of aromatic compounds from the olefin feed to a sulfuric acid paraffin alkylation by feeding a olefin containing hydrocarbon stream and a dilute alkylate stream from a paraffin alkylation to a distillation zone and removing unreacted material from said hydrocarbon stream as overheads and removing a more concentrated alkylate product stream and a portion of said aromatic compounds as bottoms and the improved alkylation process resulting therefrom.
Claims7
A process for the removal of aromatic compounds from the olefin feed to an paraffin alkylation comprising:
- feeding an olefin and aromatic containing hydrocarbon stream and a dilute alkylate product stream from a paraffin alkylation to a distillation zone;
- removing unreacted material from said hydrocarbon stream as overheads and removing a more concentrated alkylate product stream and a portion of said aromatic compounds as bottoms.
In a process for the alkylation of isobutane comprising:
- (a) feeding (1) isobutane and (2) C4 olefins contained in the overheads from a debutanizer to an alkylation reactor wherein isobutane is reacted with C4 olefins to form a dilute alkylate product containing alkylate and unreacted isobutane;
- and
- (b) feeding the dilute alkylate product to a debutanizer;
- wherein the improvement comprises:
- (i) feeding a C4 olefin stream containing aromatic compounds to the debutanizer;
- (ii) removing alkylate product and the aromatic compounds from the debutanizer as bottoms;
- (iii) removing a C4 stream containing substantially free of aromatic compounds from the debutanizer as overheads;
- and
- (iv) feeding the overheads to the alkylation reactor.
Dependencies are inferred from the claim text.