Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1987-03-02
1988-06-28
Mars, Howard T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
585331, C07C 4106
Patent
active
047540788
ABSTRACT:
A multistep hydrocarbon conversion process for the production of ethers including methyl tertiary butyl ether (MTBE) from light paraffins and alcohols is disclosed. A mixture of C.sub.4 isoparaffins, normal paraffins, an etherification recycle and butane isomerization effluent enter a deisobutanizer column. Normal paraffins withdrawn from the fractionator are isomerized and returned to the fractionator, and isoparaffins are withdrawn from the fractionator and dehyrogenated. The resulting olefins enter an etherification zone for reaction of isobutene with a C.sub.2 -C.sub.5 alcohol. Unreacted paraffins and olefins comprise the etherification effluent entering the deisobutanizer. Normal butanes and olefins are withdrawn as a sidecut from the deisobutanizer. Hydrogenation of the sidecut saturates any olefins contained therein which would interfere with the isomerization of normal butanes. The saturated sidecut passes to an isomerization zone and a mixture of isobutane and normal butane is recycled to the deisobutanizer. In a highly perferred embodiment, spent catalyst from the isomerization zone fulfills the catalyst requirement of the dehydrogenation zone.
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Paper presented at the American Institute of Chemical Engineers 85th National Meeting on Jun. 4-8, 1978 by F. Obenaus et al.
Conser Richard E.
Pujado Peter R.
Vora Bipin V.
Mars Howard T.
McBride Thomas K.
Spears Jr. John F.
Tolomei John G.
UOP Inc.
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