Kraftwerk Union Aktiengesellschaft

Hans-Chris Trankenschuh

Konrad Goebel

A combined gas and steam turbine power generating station includes: a gas turbine part having a gas turbine and a combustion chamber connected to the gas turbine; a coal gasifier being connected upstream of the gas turbine part and having a raw gas side; a heat exchanger system being connected downstream of the raw gas side of the coal gasifier and including a first high-pressure steam generator, a raw gas/pure gas heat exchanger and a low-pressure steam generator; a gas purifier being connected downstream of the heat exchanger system and having a pure gas line leading to the combustion chamber of the gas turbine part; and a steam turbine power generating station part including a waste heat steam generator facility connected to the gas turbine of the gas turbine part for receiving exhaust gas therefrom, the waste heat steam generator facility including a second high-pressure steam generator, first heating surfaces and a second heating surface connected downstream of the first heating surfaces, the steam turbine power generating station part also including a steam turbine having a low-pressure steam feed and a feedwater line connected to the steam turbine having at least one first leg feeding the first heating surfaces with given pressure and a second leg feeding the second heating surface with pressure lower than the given pressure, and the second heating surface being connected as another low-pressure steam generator having an outlet side connected to the low-pressure steam feed.

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Forchheim-Kersbach, Germany

Hans-Chris Trankenschuh