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:
Jul. 05, 1994
Filed:
Dec. 23, 1991
J W Sachtler, Des Plaines, IL (US);
UOP, Des Plaines, IL (US);
Abstract
An isomerization process maximizes the production of 2,3-dimethylbutane by using an arrangement of two reaction zones that operate at low conversion conditions to maximize the production of a methyl pentane containing intermediate and limit the interconversion of 2,3-dimethylbutane to 2,2-dimethylbutane. The process converts a feed comprising normal hexane in a first reaction zone. The effluent from the first reaction zone has a high concentration of methyl pentanes which is separated from normal hexane and passed to a second separation section that receives the effluent from a second reaction zone. Methyl pentanes from the first and second reaction zone effluents enter the second reaction zone for conversion to dimethylbutane in a high 2,3-dimethylbutane to 2,2-dimethylbutane ratio. In this manner the process produces a principally dimethylbutane product having a relatively high octane rating as a result of the high 2,3-dimethylbutane concentration.