Method for operating a steam turbine installation and a steam turbine installation that functions according thereto
OwnerChristoph Noelscherinventor
Life of this patent
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Abstract
During the operation of a steam turbine installation (1), flue gas (RG) produced by combusting a fossil fuel (B) is firstly guided in a high-temperature heat exchanger (3) while exchanging heat with water vapor (WD) which flows in the water-steam circuit (6) of a steam turbine (7) and which is fed to the steam turbine (7) as fresh steam (FD) having a fresh steam temperature (TFD) of preferably greater than 800 ° C. The flue gas (RG) that is cooled down in the high-temperature heat exchanger (3) is subsequently guided in a waste heat stem generator (4) while exchanging heat with feed water (SW), which flows in the water-steam circuit, whereupon inducing the production of water vapor (WD).
Claims10
A method of operating a steam turbine installation, in which method combustion gas (RG) generated by combustion of a fossil fuel (B) is guided so as to exchange heat with a medium (SW, WD) flowing in the water/steam cycle (6) of a steam turbine (7), in which the hot combustion gas (RG) is first supplied to the primary side of a high-temperature heat exchanger (3) and is there guided so as to exchange heat with steam (WD), which is supplied to the secondary side of the high-temperature heat exchanger (3) and flows in the water/steam cycle (6), the steam heated by this means being supplied to the steam turbine (7) as live steam (FD), and in which the combustion gas (RG) cooled in the high-temperature heat exchanger (3) is subsequently guided in a waste-heat steam generator (4) so as to exchange heat with feed water (SW) flowing in the water/steam cycle (6), the steam (WD) being generated by this means.
A steam turbine installation having a combustion installation (1) for a fossil fuel (B) for the generation of combustion gas (RG), which is guided in a high-temperature heat exchanger (3) and in a waste-heat steam generator (4) connected downstream on the combustion gas side of the high-temperature heat exchanger (3) so as to exchange heat with a medium (SW, WD) flowing in the water/steam cycle (6) of a steam turbine (7), and in which the steam side of the high-temperature heat exchanger (3) is connected between the waste-heat steam generator (4) and the steam turbine (7).
Dependencies are inferred from the claim text.