| 摘要 |
PROBLEM TO BE SOLVED: To provide a refuse incinerator wherein a combustion state in a secondary combustion chamber is easily stabilized. SOLUTION: Gas generated by after-combustion of refuse, which has been subjected to primary combustion in a primary combustion chamber is extracted to the outside of a furnace body 2 from an after-combustion zone and injected in a secondary combustion chamber. By irradiating gas, generated by after- combustion, with a laser beam by a laser detecting meter 10 through a measuring window 12 formed in a furnace body 2, oxygen concentration of the gas generated by the after-combustion is detected. A control means 17 is provided to control a primary combustion air feed device 5 based on the detecting result of the laser detecting meter 10 so that the oxygen concentration of the gas generated by the after-combustion is adjusted to a target concentration.
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