Chemistry of hydrocarbon compounds – Saturated compound synthesis – By isomerization
Patent
1990-01-09
1991-06-25
Davis, Curtis R.
Chemistry of hydrocarbon compounds
Saturated compound synthesis
By isomerization
585748, 585751, 585820, 585826, C07C 513
Patent
active
050269518
ABSTRACT:
A combination isomerization and liquid phase adsorptive separation process is given increased efficiency and cost effectiveness by the elimination of a column for the separation of desorbent material from selectively retained components. By decreasing the ratio of normal paraffin desorbent to the selective pore volume circulation rate, the extract column can be eliminated without providing other means for the rejection or recovery of desorbent material. This reduction in the ratio of normal paraffin desorbent to selective pore volume circulation rate has been found not to decrease the recovery from the adsorption section. The elimination of the column provides a substantial decrease in the cost of the equipment to operate a combination isomerization zone and liquid phase adsorption section. In an alternate arrangement, the extract column is replaced with a deisohexanizer column. The deisohexanizer column can be used to produce a C.sub.5 -C.sub.6 product stream having research octane numbers of 93 or greater.
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Raghuram Srikantiah
Rice Lynn H.
Schmidt Robert J.
Davis Curtis R.
McBride Thomas K.
Tolomei John G.
UOP
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