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. 14, 2000
Filed:
Sep. 10, 1998
Applicant:
Inventor:
William J Koves, Hoffman Estates, IL (US);
Assignee:
UOP LLC, Des Plaines, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; B01J / ;
U.S. Cl.
CPC ...
208146 ; 208153 ; 208156 ; 208113 ; 422214 ; 422215 ;
Abstract
An dilute phase transport riser for the contacting of particles with a gas uses redistributors along the length of the riser to prevent the formation of localized regions of high particle concentration along the wall of the riser. A series of redistributors extend transversely across the riser to redistribute the particles and the gas. The redistributor can comprise radially extended spokes or simple rectangular grates spaced at regular intervals along the length of the riser. The arrangement is particularly suited for FCC application where the catalyst tends to form pickets or streamers of catalyst that may slip backward along the length of a vertical riser.