Retrofitting a heating steam extraction facility in a fossil-fired power plant

Abstract

A method for retrofitting an existing steam turbine with a steam extraction facility is provided. The stem turbine has a plurality of pressure stages and is integrated into a fossil-fired steam power plant. A steam extraction line is connected to one pressure stage or between two pressure stages of the steam turbine, and a heating steam turbine is connected into the steam extraction line.

1 - 5 . (canceled) 
     
     
         6 . A method for retrofitting a steam turbine with a steam extraction capability, the steam turbine comprising a plurality of pressure stages and being integrated into a fossil-fired steam power plant, comprising:
 connecting a steam extraction line to one pressure stage or between two pressure stages of the steam turbine; and   connecting a heating steam turbine into the steam extraction line.   
     
     
         7 . The method as claimed in  claim 6 , wherein the steam extraction line is connected to a hot reheat line of the steam turbine. 
     
     
         8 . The method as claimed in  claim 6 , wherein the steam extraction line is connected to a cold reheat line of the steam turbine. 
     
     
         9 . The method as claimed in  claim 6 , wherein the steam extraction line is connected to an overflow line of the steam turbine. 
     
     
         10 . A fossil-fired power plant, comprising:
 a steam turbine comprising a plurality of pressure stages and being integrated into the fossil-fired steam power plant,   wherein the steam turbine is adapted to perform a method for retrofitting the steam turbine with a steam extraction capability as claimed in  claim 6 .