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:
Apr. 21, 1987
Filed:
Feb. 07, 1985
Applicant:
Inventors:
Didier Dall, Lyons, FR;
Jean-Paul Euzen, Dardilly, FR;
Remy Patoux, Oullins, FR;
Pierre Renard, Saint Nom la Breteche, FR;
Assignee:
Institut Francais du Petrole, Rueil-Malmaison, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10B / ; C10B / ;
U.S. Cl.
CPC ...
208152 ; 208153 ; 208165 ; 208113 ; 208108 ; 208209 ;
Abstract
The invention concerns a process for withdrawing catalyst, particularly from a moving bed. The device is characterized in that fins (4) (see FIG. 1A), shaped as corner-plates, are arranged, on a plate (6) which supports the catalyst bed radially around each vertical duct for catalyst withdrawal, so that the flow of catalyst particles converges towards the withdrawing ducts. The apparatus is useful for example in hydroconversion reactions, particularly in hydrotreatments of heavy oil cuts.