| 摘要 |
PROBLEM TO BE SOLVED: To provide a waste incinerator and a method allowing low air ratio combustion.SOLUTION: A waste incinerator includes a main combustion chamber 11 for burning a waste fed from a waste feed inlet 13, with a secondary combustion chamber 12 connected to an outlet side of the main combustion chamber 11, to burn unburnt gas after the burning in the main combustion chamber 11, and is provided with a drying fire grate 11a, a combustion fire grate 11b, and an after-combustion fire grate 11c sequentially in a main combustion chamber 11 lower part, and further with a primary air supply means 21 for supplying primary air from respective under sides of the drying fire grate 11a and the combustion fire grate 11b. In the waste incinerator, a high-temperature air supply means 25 is provided to supply 100-200°C of high-temperature air from an under side of the after-combustion fire grate, and the high-temperature air is supplied to the secondary combustion chamber 12 through the main combustion chamber 11. |
