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:
Nov. 22, 2011
Filed:
Nov. 17, 2009
Bryan S. Garney, Crystal Lake, IL (US);
Jocelyn C. Daguio, Chicago, IL (US);
Kurt A. Detrick, Glen Ellyn, IL (US);
David J. Shecterle, Arlington Heights, IL (US);
John M. Krupczak, Hawthorn Woods, IL (US);
Andrew D. Mezera, Des Plaines, IL (US);
Douglas A. Becci, Carol Stream, IL (US);
Bryan S. Garney, Crystal Lake, IL (US);
Jocelyn C. Daguio, Chicago, IL (US);
Kurt A. Detrick, Glen Ellyn, IL (US);
David J. Shecterle, Arlington Heights, IL (US);
John M. Krupczak, Hawthorn Woods, IL (US);
Andrew D. Mezera, Des Plaines, IL (US);
Douglas A. Becci, Carol Stream, IL (US);
UOP LLC, Des Plaines, IL (US);
Abstract
An apparatus and process for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon which includes a first drier and a second drier; and a reaction zone communicating with at least the first drier. The first drier operates at a first condition to dry the reactant and the second drier operates at a second condition during regeneration. The used regenerant remaining in the second drier after regeneration can (1) pass through a vent-to-flare assembly in a batch-wise manner; (2) pass through a downflow-depressure-to-low-pressure-device assembly in a batch-wise manner; (3) pass through a cross-over piping purge assembly to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation; or any combination of (1) (2) and/or (3) to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation.