Fuel and related compositions – Liquid fuels – Organic oxygen compound containing
Patent
1990-11-16
1993-01-05
McAvoy, Ellen
Fuel and related compositions
Liquid fuels
Organic oxygen compound containing
568697, C10L 118
Patent
active
051767198
ABSTRACT:
A technique for converting olefinic light hydrocarbons rich in butenes and butanes to ether-rich liquid fuels including etherification and transhydrogenation operations. The preferred process includes: reacting a mixed C4 hydrocarbon stream containing isobutene and n-butenes with lower aliphatic alcohol in an etherification zone in contact with an acidic etherification catalyst under etherification conditions whereby an effluent stream containing C5+ tertiary-alkyl ether is produced; separating the etherification effluent stream to provide a liquid stream comprising C5+ ether and an olefinic stream comprising unreacted C4 hydrocarbons; contacting at least the n-butenes from the C.sub.4 olefinic hydrocarbon stream with isobutane under transhydrogenation conditions in the presence of transhydrogenation catalyst whereby isobutane is converted to isobutene; separating transhydrogenation effluent to recover a C4 olefinic intermediate stream containing isobutene; and passing at least a portion of the isobutene-containing intermediate stream to the etherification zone for conversion to tertiary-alkyl ether.
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Harandi Mohsen N.
Owen Hartley
McAvoy Ellen
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
Wise L. G.
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