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:
May. 18, 1999
Filed:
Dec. 12, 1997
Erich Hums, Hessdorf, DE;
Nicolas Vortmeyer, Essen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A gas turbine can achieve comparatively low emissions of nitrogen oxide. One disadvantage particularly of a catalytic combustion chamber is that, for example for natural gas, the ignition temperature necessary for combustion is in the region of about 400 .degree. C. The use of an auxiliary burner, which constitutes a disadvantageous source of nitrogen oxide, has therefore been heretofore unavoidable. In order to eliminate that disadvantage, a gas turbine for the combustion of a fuel gas, particularly with catalytic combustion of the fuel gas, includes a conduit system for drawing off part of the fuel gas, guiding it through a catalytic preforming stage to convert a hydrocarbon contained in the fuel gas into an alcohol and/or an aldehyde and subsequently feeding it to the fuel gas again in order to lower its ignition temperature. In this way, the comparatively easily igniting fuels alcohol and/or aldehyde are obtained from the fuel gas in the preforming stage. A fuel gas intermixed with these materials therefore ignites at a considerably lower ignition temperature than a fuel gas without preformed constituents.