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. 18, 2000
Filed:
Apr. 01, 1999
Herman Bruckner, Uttenreuth, DE;
Erich Schmid, Rathsberg, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
Condensate of a combined-cycle gas and steam turbine plant is deaerated. The condensate is heated in a feedwater tank to which preheated condensate is supplied. The condensate is preheated in a waste-steam generator heated by waste heat of the gas turbine. Feedwater is extracted and warmed in heating surfaces connected in the water/steam loop of the steam turbine and heated by the exhaust gas from the gas turbine. In order to guarantee adequate deaeration of the condensate at a simultaneously high efficiency of the plant through especially high energy utilization of the waste heat from the gas turbine, a partial flow of the preheated condensate or a partial flow of preheated feedwater is used as heating medium for heating the condensate. A low-pressure economizer is connected downstream of a condensate preheater in the waste-heat steam generator via a feedwater tank. The condensate preheater or the low-pressure economizer have at their outlet an outflow line leading into the feedwater tank.