Combined-cycle power plant with feed-water preheater bypass

US6363711B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Erich Schmid · Nuremberg, DE
• Helmut Stierstorfer · Erlangen, DE

Key dates

• Filing date: Feb 13, 2001
• Grant date: Apr 2, 2002
• Expiry date: Feb 13, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E20/16
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A combined-cycle power plant includes a steam turbine having at least one low-pressure stage and a high-pressure stage, a feed-water preheater associated with the high-pressure stage, a bypass line connected in parallel with the feed-water preheater, a gas turbine operable with both gas and oil as fuel and having a flue-gas side, and a waste-heat steam generator disposed downstream of the gas turbine on the flue-gas side for generating steam for the steam turbine.