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:
Jun. 05, 2012
Filed:
Sep. 09, 2004
Phillip Kent Niccum, Houston, TX (US);
Iwan Hirsan Chan, Houston, TX (US);
Richard Brian Miller, Katy, TX (US);
Steven Arthur Tragesser, Houston, TX (US);
Phillip Kent Niccum, Houston, TX (US);
Iwan Hirsan Chan, Houston, TX (US);
Richard Brian Miller, Katy, TX (US);
Steven Arthur Tragesser, Houston, TX (US);
Kellogg Brown & Root LLC, Houston, TX (US);
Abstract
Apparatus and method are provided for separating and stripping suspensions comprising catalyst particles transported in vapors from the fluid catalytic cracking riser/reactor. Particles are disentrained from vapor in a vortex zoneof the primary cyclonic separator. The disentrained particles enter a stripping zone, wherein the particles are contacted with a stripping gasto recover vapors entrained and adsorbed onto the catalyst. The stripping gasenters stripping zonevia perforations in the wall of the cyclone. The stripping gaslimits the residual catalytic conversion of hydrocarbon vapors and formation of delta-coke on the catalyst. Stripped catalyst is delivered from the cyclone stripping zonevia a diplegconnected to a bottom of the cyclone, and enters an FCC stripping vessel. Solids-lean stripping gas and vapors from the catalyst particles are blended with the carrier fluid and discharged from the cyclone.