Doosan Enerbility Co., Ltd.

Byoung Youn Kim

Eun Seong Cho

Jeong Seok Yoo

Chang Rim Lee

Myung Son Kang

In Chul Shin

Kang Min Lee

A combined power generation system includes a gas turbine, a heat recovery steam generator (HRSG) generating steam using combustion gas from the gas turbine, a vaporizer vaporizing liquefied ammonia, an ammonia decomposer section decomposing ammonia with the combustion gas, a first exhaust gas line through which exhaust gas from the gas turbine is transferred to the HRSG, a steam turbine generating a rotational force with the steam from the HRSG, a decomposed gas supply line through which decomposed gases generated in the ammonia decomposer section are supplied to a combustor, and a cold heat transfer line absorbing cold heat of the liquefied ammonia and supply the cold heat to the condenser section, and a condenser section condensing the steam from the steam turbine.

Combined power generation system and driving method thereof

A combined power generation system includes a gas turbine, a heat recovery steam generator (HRSG) configured to heat feedwater using combustion gases discharged from the gas turbine and having a high-pressure section, a medium-pressure section, and a low-pressure section having different pressure levels, an ammonia decomposer decomposing ammonia with the combustion gases discharged from the gas turbine, a first exhaust gas line through which the exhaust gases discharged from the gas turbine are transferred to the HRSG, a second exhaust gas line through which the exhaust gases discharged from the gas turbine are transferred to the ammonia decomposer, a third exhaust gas line through which the exhaust gases discharged from the ammonia decomposer are transferred to the HRSG, and a decomposed gas transfer tube connecting the ammonia decomposer and the combustor to transfer decomposed gases generated with the decomposition of ammonia to the combustor.

Growing community of inventors

Yongin-si, South Korea

Byoung Youn Kim