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:
Dec. 26, 2006
Filed:
Jul. 10, 2001
Terry G. Roberie, Ellicott City, MD (US);
Ranjit Kumar, Clarksville, MD (US);
Michael S Ziebarth, Columbia, MD (US);
Wu-cheng Cheng, Ellicott City, MD (US);
Xinjin Zhao, Woodbine, MD (US);
Nazeer Bhore, Gaithersburg, MD (US);
Terry G. Roberie, Ellicott City, MD (US);
Ranjit Kumar, Clarksville, MD (US);
Michael S Ziebarth, Columbia, MD (US);
Wu-Cheng Cheng, Ellicott City, MD (US);
Xinjin Zhao, Woodbine, MD (US);
Nazeer Bhore, Gaithersburg, MD (US);
W.R. Grace &Co.-Conn., Columbia, MD (US);
Abstract
The sulfur content of liquid cracking products, especially the cracked gasoline, is reduced in a catalytic cracking process employing a cracking catalyst containing a high content of vanadium. The cracking process involves introducing at least one vanadium compound into a hydrocarbon-sulfur containing feedstock to be charged to a fluid catalytic cracking reactor operating under steady state conditions and containing an equilibrium fluid cracking catalyst inventory within the reactor. The amount of sulfur in the liquid products, in particular gasoline and LCO fractions, is reduced as a result of the increased vanadium content on the equilibrium catalyst. Advantageously, sulfur reduction is achieved even in the presence of other metal contaminants, such as nickel and iron, on the equilibrium catalyst.