| 摘要 |
<p>PROBLEM TO BE SOLVED: To surely and stably prevent a trip from occurring due to abrupt increase of heat quantity of a blast furnace in blast furnace open ceiling, without greatly increasing costs, in a blast furnace gas-fired boiler, such as a boiler for blast furnace gas power generation, generating steam with blast furnace gas used as fuel.SOLUTION: A fuel control method of a blast furnace gas-fired boiler 10 using blast furnace gas as fuel introduces steam to a position on upstream side with respect to a flow rate adjustment valve 14 in a fuel supply pipe 12 for supplying blast furnace gas to a burner 11 of the boiler 10, in blast furnace open ceiling, and reduces the heat quantity of blast furnace gas supplied to the burner 11.</p> |
