초록 ▼

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 downs

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.

대표청구항 ▼

Combined gas and steam turbine power generating station, comprising: a gas turbine part having a gas turbine with an exhaust gas line and a combustion chamber connected to said gas turbine; a coal gasifier being connected upstream of said gas turbine part and having a raw gas line; a heat exchanger

Combined gas and steam turbine power generating station, comprising: a gas turbine part having a gas turbine with an exhaust gas line and a combustion chamber connected to said gas turbine; a coal gasifier being connected upstream of said gas turbine part and having a raw gas line; a heat exchanger system connected downstream of said raw gas line of said coal gasifier and including a first high-pressure steam generator, a raw gas/pure gas heat exchanger and a first low-pressure steam generator; a gas purifier being connected downstream of said heat exchanger system and having a pure gas line leading to said combustion chamber of said gas turbine part; and a steam turbine power generating station part including a waste heat steam generator facility connected to said exhaust gas line of said gas turbine for receiving exhaust gas therefrom, said waste heat steam generator facility including a second high-pressure steam generator, first and second preheating surfaces each being connected upstream of a respective one of said first and second high-pressure steam generators, and a second low-pressure steam generator connected downstream of said first and second preheating surfaces and said second high-pressure steam generator, as seen in exhaust gas flow direction, said steam turbin power generating station part also including a steam turbine having a low-pressure steam feed line and a high-pressure steam feed line connected to said steam turbine, feed water lines being connected to both of said low-pressure steam generators, means for providing said feed water lines with pressures lower than in said first and second preheating surfaces, and low-pressure steam lines connecting both of said low-pressure steam generators to said low-pressure steam feed line of said steam turbine.