Patent ID: 7723555

Claim:
A process for the alkylation of isobutane with an olefin comprising: (a) feeding isobutane, isopentane, and an olefin to a first alkylation system where a portion of the isobutane is reacted with a portion of the olefin to form an effluent comprising a dilute alkylate stream containing unreacted components including isopentane and isobutane; (b) feeding the effluent from the first alkylation system to a debutanizer where C 4 's and at least a portion of the isopentane are removed as a first overheads, and a first alkylate product is removed as a first bottoms; (c) feeding the first overheads and a stream containing isobutane to a second alkylation system where isobutane is reacted with C 4 olefins in said first overheads to form a second alkylate product.