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:
Apr. 15, 1997
Filed:
Nov. 09, 1994
Herbert E Andrus, Jr, Granby, CT (US);
Combustion Engineering, Inc., Windsor, CT (US);
Abstract
A high performance, multi-stage, pressurized, airblown, entrained flow coal gasifier system and a method of operating such a gasifier system for generating therewithin fuel gas from coal. The subject gasifier system includes an outer, pressure containing vessel surrounding an inner, water-cooled vessel wherein the gasification reaction, through which the fuel gas is generated from coal, takes place. The inner, water-cooled vessel embodies a first stage within which the high temperatures required for the gasification reactions to take place as well as for slagging are generated from the combustion of char, a second stage within which the char is gasified to generate the subject fuel gas, and a third stage within which coal is devolatilized to produce the char for the first stage and the second stage and with a concomitant quenching being effected of the fuel gas as the latter flows through the third stage of the inner water-cooled vessel.