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:
Jul. 18, 2006
Filed:
Jul. 10, 2001
Ernst Antonius Bakker, Amsterdam, NL;
David John Bridger, Rosehill, AU;
Hendricus Arien Dirkse, Amsterdam, NL;
Stephen Brian Fowler, The Hague, NL;
Ernst Antonius Bakker, Amsterdam, NL;
David John Bridger, Rosehill, AU;
Hendricus Arien Dirkse, Amsterdam, NL;
Stephen Brian Fowler, The Hague, NL;
Shell Oil Company, Houston, TX (US);
Abstract
A fluidized catalytic cracking reactor vessel having at its upper end means to separate catalyst particles from an effluent of a dilute phase fluidized catalytic cracking reactor riser, which separation means are fluidly connected to the downstream part of the reactor riser, fluidly connected with means to discharge the cleaned reactor riser effluent from the vessel and fluidly connected to means to discharge the separated catalyst to the lower end of the vessel, the vessel further having at its lower end means to discharge catalyst from the reactor vessel, wherein (a) between the side wall of the vessel and the separation means a shield is present, resulting in an exterior space between the vessel wall and the shield and an interior space within the shield, wherein the interior space is in open communication with the lower end of the reactor vessel at its lower end and wherein the exterior space and interior space are fluidly connected by means of one or more openings; and (b) means are present to supply a gas poor in coke precursors to the exterior space.