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. 07, 2006
Filed:
Oct. 23, 2002
Thierry Gauthier, Brignais, FR;
Hervé Gauffriez, Oelienas, FR;
Joseph Ross, Princeton, NJ (US);
Institut Francais du Petrole, Rueil Malmaison Cedex, FR;
Abstract
The invention consists in implanting an inner tube fed at its lower portion by a fraction of regenerated catalyst inside a riser () of an FCC unit that is fed by catalyst via a line () and a feedstock via a line (), whereby the fluid that allows this feed can be inert, in which case a staging effect of the catalyst inside the riser or else a feedstock () that has a tendency toward a more severe cracking inside the inner tube, then leading to an additional production of olefins, in particular propylene, is advantageous. The mixtures of fluids and catalyst are cooled above the tube via a line () of an inert fluid.