COMBUSTION CONTROL METHOD AND DEVICE OF OXYGEN COMBUSTION BOILER

摘要

Combustion control method and device of an oxygen combustion boiler capable of controlling combustion constantly and easily by easily being applied to an existing air combustion boiler. Oxygen in a set amount corresponding to a boiler load instruction (35) is supplied to a boiler body (4), a boiler collected heat quantity is measured from the inlet temperature of feed water supplied to the boiler body (4) and the outlet temperature of steam, and the re-circulated flow rate of combustion exhaust gas (14a) is controlled so that a collected heat quantity (41) by the boiler body (4) is equal to a target collected heat quantity (42), whereby an oxygen concentration in the whole gas introduced to the boiler body (4) is regulated.