The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 1991
Filed:
Jan. 09, 1990
Robert J Schmidt, Rolling Meadows, IL (US);
Lynn H Rice, Palatine, IL (US);
Srikantiah Raghuram, Darien, IL (US);
UOP, Des Plaines, IL (US);
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.