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:
Sep. 01, 1981
Filed:
Aug. 21, 1979
Amalesh K Sirkar, Lawrenceville, NJ (US);
Hydrocarbon Research, Inc., Lawrenceville, NJ (US);
Abstract
This invention provides a process and system for the segregation of used catalyst contaminated by the extended processing of hydrocarbon feedstocks. It utilizes multi-stage fluidization and segregation of the catalyst in an upflowing liquid, and recovery of the less contaminated catalyst upper fraction for reuse. The recovery vessel comprises at least two concentric compartments, either or both of which may preferably be tapered so as to provide less cross-sectional area at the upper end of the catalyst bed for improved fluidization of the used catalyst. The used catalyst material is usually introduced into the annulus between the vessel walls, and the lower density less contaminated fraction is accumulated within the inner compartment, from which it is withdrawn for reuse.