| 摘要 |
Provided is a gasification furnace apparatus equipped with a supply source of low-oxygen-concentration drying gas that does not require fuel. A coal pulverizer that produces pulverized coal by pulverizing coal, an air separator that separates air into oxygen gas and nitrogen gas, and a gasification furnace that produces product gas by introducing thereinto the pulverized coal and the oxygen gas, are included. By receiving a supply of excess nitrogen gas from the air separator, the air diluted with nitrogen is used as a source of low-oxygen-concentration gas for drying the pulverized coal, and an air heater that heats the source of low-oxygen-concentration gas to a temperature at which drying can be performed is provided.
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