Chemistry of hydrocarbon compounds – Plural serial diverse syntheses – With hydrocarbon recycle from later to earlier synthesis
Patent
1981-06-11
1983-01-04
Davis, Curtis R.
Chemistry of hydrocarbon compounds
Plural serial diverse syntheses
With hydrocarbon recycle from later to earlier synthesis
585329, 585331, C07C 258
Patent
active
043673562
ABSTRACT:
A process for producing gasoline from a charge stream comprising a mixture of butanes and butylenes is disclosed. The quality of a product alkylate is improved by increasing the butene-2 content of an alkylation zone feed stream. A first portion of the charge stream is passed into a dimerization zone in which isobutylene is reacted with normal butylenes, with butene-1 being reacted to a greater extent than butene-2. A C.sub.8 hydrocarbon-containing product stream and a C.sub.4 stream having a higher butene-2 concentration than the charge stream are recovered from the dimerization zone. This high butene-2 content C.sub.4 stream is admixed with a second portion of the charge stream and passed into an alkylation zone wherein butylenes are reacted with isobutane to yield a second product stream containing C.sub.8 hydrocarbons.
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Davis Curtis R.
Hoatson Jr. James R.
Page II William H.
Spears Jr. John F.
UOP Inc.
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