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:
Oct. 08, 1985
Filed:
Nov. 10, 1983
Robert M Osman, Parsippany, NJ (US);
Exxon Research & Engineering Co., Florham Park, NJ (US);
Abstract
In a process for steam reforming of a hydrocarbon gas feedstream wherein: (a) the hydrocarbon gas feedstream is partially reformed at elevated temperatures in indirect heat exchange with hot combustion gases in a direct fired primary reforming furnace provided with a convection section for recovery of excess heat from said combustion gases; and (b) the partially reformed feedstream is then further reformed in the presence of an oxygen-containing gas and steam in a secondary reformer to form a secondary reformer gaseous effluent; the improvement which comprises recovering waste heat from said secondary reformer effluent gas and from said primary reforming combustion products by (i) heating a high pressure saturated steam in a first steam superheating zone by indirect heat exchange with at least a portion of said secondary reformer effluent gas to form a first superheated steam stream; and (ii) further heating said first superheated steam in a second steam superheating zone by indirect heat exchange with at least a portion of said primary reformer hot combustion gases to form a second superheated steam stream.