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:
Jan. 08, 2002
Filed:
Jan. 22, 2001
Hans Rüegg, Wohlen, CH;
Beat Stoffel, Holderbank, CH;
ALSTOM (Switzerland) Ltd, Baden, CH;
Abstract
In a process for the thermal treatment of solid materials ( ), in particular refuse, in which the solid materials ( ) are burnt/gasified or pyrolized in a first step ( ) with a lack of oxygen, and then, in an afterburning zone ( ), the flue gases ( ) from the first step ( ) are mixed with an oxygen-containing gaseous medium ( ) and are burnt with complete burn-off, the flue gases ( ) emerging from the first step ( ) are firstly actively homogenized in a mixing zone ( ) with the addition of a gaseous oxygen-free or low-oxygen medium ( ) before they are mixed with the oxygen-containing medium ( ). Then, the homogenized flue-gas stream flows through a holding zone ( ), in which it stays for at least 0.5 second, before, in an afterburning zone ( ), the medium ( ) which serves to ensure complete burn-off of the flue gas is added. The process according to the invention is distinguished by simple process steps and by a reduced level of pollutant emissions, in particular NOx, compared to the prior art.