CARBON DIOXIDE RECOVERY METHOD AND CARBON-DIOXIDE-RECOVERY-TYPE STEAM POWER GENERATION SYSTEM

摘要

According to one embodiment, a carbon-dioxide-recovery-type steam power generation system comprises a boiler that generates steam through the combustion of fuel and generates an exhaust gas, an absorption tower that is supplied with the exhaust gas from the boiler, and allows carbon dioxide contained in the exhaust gas to be absorbed in an absorption liquid, a regeneration tower that is supplied with the absorption liquid having absorbed carbon dioxide from the absorption tower, discharges a carbon dioxide gas from the absorption liquid, and discharges the carbon dioxide gas, a reboiler that heats the absorption liquid discharged from the regeneration tower and supplies generated steam to the regeneration tower, a turbine that is supplied with steam from the boiler and is rotationally driven, a condenser that generates condensate by cooling steam exhausted from the turbine, a condensate pump that sends the condensate to a line, a water supply pump that is provided on the line and supplies water to the boiler, a compressor that compresses the carbon dioxide gas, and a cooler that is supplied with a part of the condensate and cools the carbon dioxide gas, which has been compressed by the compressor, while using the condensate as cooling water. The reboiler is supplied with steam that is exhausted from the turbine and steam that is generated by the cooling of the carbon dioxide gas at the cooler.