| 摘要 |
PROBLEM TO BE SOLVED: To suppress the height of a coal gasifier as a whole by making a start-up burner unnecessary and avoiding a start-up combustion chamber or making a start-up burner smaller and lighter compared with conventional one and miniaturizing the start-up combustion chamber even if a start-up burner is provided, in a coal gasifier in which pulverized coal is charged into a furnace by an inert carrier gas and gasified. SOLUTION: A start-up gas supply passage 29 for supplying a start-up combustible gas (NG1) is provided on the way of a fuel supply passage 23 for supplying the pulverized coal to a combustor burner 9, and after the temperature, based on a detection value from a detection means 41 for detecting the temperature in the furnace, in the furnace reaches a first temperature T1 at which the pulverized coal can be ignited, the inputs of the pulverized coal and the carrier gas are increased while reducing the supply amount of the combustible gas (NG1) from the start-up gas supply passage 29 to make the transition to the combustion by the pulverized coal and the carrier gas. COPYRIGHT: (C)2009,JPO&INPIT
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