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.

Date of Patent:
Dec. 11, 2018

Filed:

Jan. 20, 2015
Applicant:

Ansaldo Energie Switzerland Ag, Baden, CH;

Inventors:

Klaus Doebbeling, Windisch, CH;

Anton Nemet, Lengnau, CH;

Martin Zajadatz, Kuessaberg, DE;

Rene Waelchli, Niedergoesgen, CH;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 6/18 (2006.01); F02C 7/18 (2006.01); F02C 6/08 (2006.01); F02C 9/18 (2006.01); F01D 9/06 (2006.01); F01D 25/30 (2006.01); F01K 23/10 (2006.01); F02C 3/13 (2006.01);
U.S. Cl.
CPC ...
F02C 9/18 (2013.01); F01D 9/065 (2013.01); F01D 25/30 (2013.01); F01D 25/305 (2013.01); F01K 23/10 (2013.01); F02C 3/13 (2013.01); F02C 6/18 (2013.01); F02C 6/08 (2013.01); F05D 2220/32 (2013.01); F05D 2220/72 (2013.01); F05D 2270/08 (2013.01); Y02E 20/16 (2013.01);
Abstract

The invention relates to a method of operating a gas turbine assembly, which includes a compressor, a combustor and a gas turbine. The method includes operating the gas turbine assembly at a partial load with respect to a base load of the gas turbine assembly; bypassing a portion of blow-off air from the compressor; and introducing the portion of blow-off air into an exhaust gas duct after the gas turbine. The gas turbine assembly, when operating at partial load, can maintain the air-to-fuel ratio approximately constant and hence to control the combustion flame temperature at a level where emissions are kept below the permission limit.


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