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:
Mar. 08, 1994
Filed:
Sep. 25, 1992
Andrew S Zarchy, Amawalk, NY (US);
Nelson Cusher, Buffalo Grove, IL (US);
Gary J Welch, Danbury, CT (US);
UOP, Des Plaines, IL (US);
Abstract
Processes are disclosed for the adsorption and isomerization of paraffinic hydrocarbons wherein an absorption cycle is employed that utilizes a non-adsorbable purge gas for regenerating the adsorber beds, which cycle includes adsorption, regeneration and void space purging steps and wherein one of said void space purging steps comprises passing an adsorber feed to the adsorber bed to purge non-adsorbable purge gas from the void space and said step is continued until at least a portion of the non-adsorbed hydrocarbons in the adsorber feed elutes from the void space of the adsorber bed. Processes are further disclosed for sulfur and/or ammonia-containing feeds that employ additional conversion and adsorption zones to prevent the sulfur and/or ammonia compounds from contacting the isomerization catalyst. The products from the processes are useful as motor fuel blending components.