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:
Aug. 07, 2001
Filed:
Aug. 09, 1999
Applicant:
Inventors:
William C. Gibson, Tulsa, OK (US);
Robert L. Gibson, Broken Arrow, OK (US);
Assignee:
Petro-Chem Development Co., Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G 9/16 ;
U.S. Cl.
CPC ...
C10G 9/16 ;
Abstract
In a delayed coking process, furnace tube fouling is minimized by including a measured amount of full boiling range heavy gas oil as an additive in the furnace feed, preferably by forced recycle from a heavy gas oil stream. An additive is preferably supplied directly to individual furnace tubes by multiple circumferential injection upstream of each tube receiving the additive.