Chemistry of hydrocarbon compounds – Plural serial diverse syntheses – With hydrocarbon recycle from later to earlier synthesis
Patent
1980-12-29
1982-04-13
Davis, Curtis R.
Chemistry of hydrocarbon compounds
Plural serial diverse syntheses
With hydrocarbon recycle from later to earlier synthesis
585314, 585331, 585332, 585654, 585723, 585734, C07C 258
Patent
active
043249370
ABSTRACT:
A hydrocarbon conversion process for the production of motor fuel blending stocks from propane and butane is disclosed. Preferably a charge stream comprising a mixture of C.sub.3 -C.sub.4 saturated hydrocarbons is split into a C.sub.3 stream passed into a dehydrogenation zone and a C.sub.4 stream passed into an isostripper column. Normal butanes are removed from the isostripper and passed into an isomerization zone, with product isobutane being concentrated by fractionation in the isostripper. Isobutane and propylene from the dehydrogenation zone are then reacted in an alkylation zone which produces C.sub.5 -plus product hydrocarbons. The effluent of the alkylation zone enters the isostripper. The product stream and a propane-containing stream are withdrawn from the isostripper, with the propane-containing stream being passed into a second separation zone. Alternative butane fractionation systems are disclosed.
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The Oil and Gas Journal, R. F. Anderson, "Changes Keep HF Alkylation Up-to-Date", Feb. 11, 1974, pp. 78-82.
Davis Curtis R.
Hoatson Jr. James R.
Page II William H.
Spears Jr. John F.
UOP Inc.
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