Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1990-07-16
1992-05-12
Mars, Howard T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
585259, 585324, 585670, C07C 4106
Patent
active
051130238
ABSTRACT:
A process in which isobutane (isoparaffins), containing normal butane (normal paraffins), is dehydrogenated, and the principal product, isobutene, (isoolefin) contains some butene-1 and butene-2 (1-olefins and linear internal olefins). This mixture is subjected to a catalyzed etherification reaction with an alcohol to yield tertiaryalkyl ether. Some unreacted butene-1 and butene-2 (linear olefins) appear in the effluent from the ether reacton zone. These detrimentally affect the advantage of recycling that part of the effluent constituted by isobutane (isoparaffin) to the dehydrogenation reactor, because, as they build up in the closed system, undesirable coke lay down on the dehydrogenating catalyst occurs. The undesirable butene-1 is hydroisomerized to butene-2 which is removed from the recycle stream by fractionation.
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patent: 4581474 (1986-04-01), Hutson, Jr. et al.
Kestler Kimberly J.
Mars Howard T.
Phillips Petroleum Company
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