Steam power plant with heat reservoir and method for operating a steam power plant

US9169744B2 · kind B2 · utility

Inventors

• Volker Schüle · Leimen, DE
• Ewald Kitzmann · Weinheim, DE
• Matthias Legin · Bischofswerda, DE

Key dates

• Filing date: Nov 22, 2010
• Grant date: Oct 27, 2015
• Expiry date: Apr 10, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01K7/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A steam power plant is suggested having, parallel to the preheater passage (VW1 to VW4), a heat reservoir (25) which is loaded with preheated condensate in weak-load times. This preheated condensate is taken from the heat reservoir (25) for generating peak-load and inserted downstream of the preheater passage into the condensate line (19.2) resp. the feed water container (8). Thus it is possible to quickly control the power generation of the power plant in a wide range without significantly having to change the heating output of the boiler of the steam generator (1). A steam power plant equipped according to the invention can thus be operated with bigger load modifications and also provide more control energy.