Fuel and related compositions – Liquid fuels – Organic oxygen compound containing
Patent
1989-03-31
1991-05-07
Medley, Margaret B.
Fuel and related compositions
Liquid fuels
Organic oxygen compound containing
44449, 568697, C10L 118
Patent
active
050133292
ABSTRACT:
A process is disclosed for converting a light hydrocarbon feedstock that contains a mixture of linear and branched olefins to ether-rich high octane gasoline streams that include tertiary alkyl and isoalkyl ethers such as MTBE, TAME, methyl isopropyl ether (MIPE), and methyl sec-butylether (MSBE). The conversion is achieved by utilizing the differing reactivity of tertiary olefins under selected conditions compared to linear olefins in the catalyzed etherification processes. The discovery has been made that unreacted olefins from the etherification reactions can be converted to gasoline boiling range hydrocarbons by contacting them with zeolite catalyst at elevated temperature. Further, it has been discovered that unreacted paraffins in the integrated process can be dehydrogenated to produce C.sub.3 -C.sub.4 olefins which can be recycled to the etherification process.
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Bell Weldon K.
Haag Werner O.
Harandi Mohsen N.
Owen Hartley
McKillop Alexander J.
Medley Margaret B.
Mobil Oil Corporation
Speciale Charles J.
Wise L. G.
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