US 11,702,964 B2
Hybrid power generation equipment and control method thereof
Song-Hun Cha, Osan (KR); Hyun Soo An, Yongin (KR); Sung Gju Kang, Yongin (KR); Young Gun Go, Yongin (KR); Kyoung Taek Oh, Changwon (KR); and SangPil Jo, Sejong (KR)
Assigned to DOOSAN ENERBILITY CO., LTD., Changwon (KR)
Filed by DOOSAN ENERBILITY CO., LTD, Changwon (KR)
Filed on Dec. 13, 2020, as Appl. No. 17/120,190.
Claims priority of application No. 10-2020-0143270 (KR), filed on Oct. 30, 2020; and application No. 10-2020-0166648 (KR), filed on Dec. 2, 2020.
Prior Publication US 2022/0136411 A1, May 5, 2022
Int. Cl. F02C 6/18 (2006.01); F01K 21/04 (2006.01); F02C 7/224 (2006.01); F01D 15/10 (2006.01); F01K 23/10 (2006.01)
CPC F01K 21/047 (2013.01) [F01D 15/10 (2013.01); F01K 23/10 (2013.01); F02C 6/18 (2013.01); F02C 7/224 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A hybrid power generation facility comprising:
a gas turbine including a compressor configured to compress air introduced from an outside, a combustor configured to mix the compressed air with fuel and to combust the compressed air and fuel mixture, and a turbine configured to produce power with first combustion gas discharged from the combustor;
a boiler including a combustion chamber and a burner installed in the combustion chamber and into which the first combustion gas discharged from the turbine of the gas turbine is introduced;
a steam turbine through which steam generated in the combustion chamber passes;
a first GT (gas turbine) pipeline connecting the turbine of the gas turbine and the burner to each other;
a first air pipeline connected to the first GT pipeline and configured to supply oxygen to the burner;
a first oxygen sensor installed at an inlet of the burner and configured to measure a concentration of oxygen of a fluid flowing to the burner;
a first GT damper installed in the first GT pipeline and configured to adjust a flow rate of a fluid flowing through the first GT pipeline according to the oxygen concentration measured by the first oxygen sensor;
a first heat exchanger through which the first air pipeline extends and second combustion gas discharged from the combustion chamber passes such that oxygen flowing through the first air pipeline is heat-exchanged with the second combustion gas in the first heat exchanger;
a second heat exchanger through which feed water passes preheated by steam discharged from the steam turbine;
a first heat exchange pipeline configured to transfer the second combustion gas discharged from the combustion chamber through the first heat exchanger;
a second heat exchange pipeline branched from the first heat exchange pipeline and configured to transfer the second combustion gas discharged through the second heat exchanger;
a first temperature sensor installed in the first heat exchange pipeline at an outlet of the first heat exchanger and configured to measure a temperature of the second combustion gas passing through the first heat exchanger; and
an auxiliary damper installed in the second heat exchange pipeline at an inlet of the second heat exchanger and configured to adjust a flow rate of the second combustion gas supplied to the second heat exchanger according to the temperature measured by the first temperature sensor.