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:
Nov. 03, 1992
Filed:
Mar. 13, 1991
Lillian A Rankel, Princeton, NJ (US);
Mobil Oil Corporation, Fairfax, VA (US);
Abstract
A catalytic cracking process for heavy metals and asphaltene containing feed is disclosed. A reactive sulfur compound, preferably H.sub.2 S, is dissolved in the heavy feed and then kept at a temperature and for a time sufficient to at least partially decompose the metal containing compounds and also to reduce the molecular weight of the asphaltenes. Preferably a metal scavenging additive is added to the equilibrium catalyst. The additive will rapidly remove the thermal- and sulfur-treated metal containing compounds and prevent or minimize metals poisoning of the cracking catalyst. Sulfur induced cracking of heavy oil components reduces the viscosity of the heavy feed, and permits lower temperature to be used in the cracking reactor.