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:
Mar. 02, 1993
Filed:
Dec. 02, 1988
Applicant:
Inventors:
Jorge M Fernandez-Baujin, North Bergen, NJ (US);
Kandasmy M Sundaram, West Paterson, NJ (US);
Jo-Lung Chien, Cedar Grove, NJ (US);
Assignee:
Lummus Crest Inc., Bloomfield, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; C07C / ;
U.S. Cl.
CPC ...
208107 ; 208130 ; 208132 ; 585648 ;
Abstract
An improved process for vaporizing a crude petroleum feedstock, preferably one boiling in the vacuum gas oil range or higher, prior to thermal cracking to olefins, wherein such feedstock is preheated, in one or more stages, in the convection section of a tubular steam cracking furnace, characterized by conducting the preheating in the presence of a small amount of hydrogen, preferably at a hydrogen/feed ratio of from about 0.01 to about 0.15 wt. %, so as to inhibit coke formation.