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:
Jul. 14, 1981
Filed:
May. 31, 1979
Charles W Von Rosenberg, Jr, Belmont, MA (US);
David B Stickler, Carlisle, MA (US);
Richard E Gannon, Andover, MA (US);
Avco Everett Research Laboratory, Inc., Everett, MA (US);
Abstract
A process and apparatus for gasification of carbonaceous matter, preferably coal, is disclosed. A stream of previously produced char, preferably produced from coal, or other fuel together with an oxidizer and steam is introduced into a first or combustion stage. The combustion gas produced by the combustion passes into a second or gasification stage and through a nozzle at at least sonic velocity. Pulverized carbonaceous matter, preferably coal, is introduced and dispersed in the combustion gas in the gasification stage. The temperature, velocity and velocity changes principally of the gas in the gasification stage are controlled to provide a heating rate for the particles of pulverized carbonaceous matter of at least about 10.sup.5 degrees Kelvin per second, and to effect rapid removal of volatile components from the immediate vicinity of the particles. Upon substantial gasification of the particles in the gasification stage, the resultant product stream may be quenched, the char removed, and preferably at least a portion thereof introduced into the combustion stage.