COAL-FIRED POWER GENERATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a coal-fired power generation facility capable of reducing energy required to dry coal in a coal mill and further drying coal to be supplied to a weighing coal feeder by effectively utilizing surplus nitrogen generated in an air separator.SOLUTION: A coal-fired power generation system includes: a coal gasification furnace 3 gasifying coal supplied from a coal supply facility 2 to generate coal gasification gas; a gas turbine for burning the coal gasification gas to obtain power of a generator; and an air separator for separating oxygen and nitrogen from exhaust gas exhausted from the gas turbine. The coal-fired power generation system is configured to supply the coal gasification furnace 3 with carbon dioxide in the exhaust gas and oxygen from the air separator, as gasifying agents, and nitrogen separated from the air separator is supplied to a weighing coal feeder 13 to dry coal in the weighing coal feeder 13.