OXYGEN COMBUSTION BOILER PLANT AND METHOD OF OPERATING THE SAME

摘要

PROBLEM TO BE SOLVED: To reduce the amount of emission of carbon dioxide during low load of an oxygen combustion boiler.

SOLUTION: This oxygen combustion boiler plant includes two boilers for injecting gas including oxygen in higher concentration than that in the air, gas including carbon dioxide in higher concentration than that in the air and fuel from a burner and generating steam by combustion gas within a furnace. The oxygen combustion boiler plant comprises: exhaust gas supply piping for supplying exhaust gas discharged from the first boiler to a burner of the second boiler; and a gas flow rate control circuit for controlling a flow rate of exhaust gas made to flow in the exhaust gas supply piping. The amount of emission of carbon dioxide during the low load of the oxygen combustion boiler can be reduced.

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