| 摘要 |
PROBLEM TO BE SOLVED: To provide a gasifying process system which can perfectly prevent the leakage from a gasifying furnace, deterioration of the quality of a gas product in the furnace, and burning of the chute due to firing of a material to be burned under combustion in the chute. SOLUTION: The gasifying process system burns and gasifies a material under combustion thrown from a chute having a seal mechanism at a negative pressure to the atmospheric pressure, utilizes the heat of the gasified combustion gas, does a specified exhaust gas treatment to induce the gas by an induced draft fan to the outside air through a stack. This system comprises a first piping for feeding a part of the exhaust gas to a material feed piping at the upstream of the seal mechanism, second piping for guiding the gas in the material feed piping to an exhaust gas discharging system and means for controlling the suction rate of the gas from the second piping according to the pressure in the material feed piping.
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