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. 13, 1993
Filed:
Nov. 29, 1991
Tai-Sheng Chou, Pennington, NJ (US);
Mobil Oil Corporation, Fairfax, VA (US);
Abstract
A process for the isomerization of C.sub.4 and higher molecular weight hydrocarbons, preferably C.sub.4 to C.sub.6 paraffins with high C.sub.6 cyclics content. A C.sub.5 to C.sub.6 hydrocarbon stream is isomerized in a first isomerization reaction zone and a C.sub.4 hydrocarbon stream is isomerized in a second isomerization reaction zone. At least one or both of the effluent streams from the first and second isomerization zones are conveyed to a gas-liquid separator which separates a hydrogen-rich recycle stream. At least a portion of the hydrogen-rich recycle stream is conveyed to the C.sub.5 to C.sub.6 hydrocarbon feed stream and at least a portion of the hydrogen-rich recycle stream is conveyed to the C.sub.4 hydrocarbon feed stream whereby the hydrogen recycle stream is shared during both the C.sub.4 isomerization reaction and the C.sub.5 to C.sub.6 isomerization reaction. The product stream is conveyed to a shared stabilizer which removes the gaseous and volatile components. The product stream can be fractionated to recover the separate C.sub.4 to C.sub.6 isoparaffins and normal paraffins and naphthenic compounds.