Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1989-12-04
1991-04-16
Mars, Howard T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
585315, 585324, C07L 4106
Patent
active
050084674
ABSTRACT:
An integrated process of producing MTBE by the dehydrogenation of isobutane and the etherification of the resulting isobutene with methanol is simplified by directly charging the effluent of a dehydrogenation zone without prior separation to an etherification zone arranged to provide countercurrent contact of isobutene and the methanol reactants such that an MTBE product is recovered as a bottoms stream and a relatively isobutene-free overhead stream is recycled to the dehydrogenation zone. Overall separation facilities are simplified by only separating C.sub.3 hydrocarbons from the etherification zone product stream. This arrangement eliminates C.sub.3 separation facilities ahead of the etherification zone and reduces the quantity of C.sub.4 hydrocarbons that are received by the separation zone. The reaction zone may contain a series of beds arranged to further eliminate the carry over of isobutene to the separation facilities. This arrangement also allows a recovery of unreactive or unreacted C.sub.4 hydrocarbons from the top of the etherification zone.
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Scott Norman H.
Vora Bipin V.
Mars Howard T.
McBride Thomas K.
Tolomei John G.
UOP
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