Steam generator plant

US6698204B2 · kind B2 · utility

Assignee

• ALSTOM (Switzerland) Ltd · CH

Inventors

• Thoralf Berndt · Stuttgart, DE
• Joachim Seeber · Wernau, DE

Key dates

• Filing date: Aug 10, 2001
• Grant date: Mar 2, 2004
• Expiry date: Jan 16, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01K7/24
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Steam generator unit having a fluidized-bed combustion system, which has a fluidized-bed combustion chamber, at least one second gas pass, and at least one separator positioned between the fluidized-bed combustion chamber and second gas pass. The steam generator unit also having at least one superheater and two reheaters connected in series on the steam side. The first reheater is constructed with a regulated bypass mechanism on the steam side, so that a partial flow of the steam fed to the second reheater can be directed past the first reheater, such that the first reheater is positioned in the second gas pass and the second reheater is positioned in the fluidized-bed combustion chamber.