| 摘要 |
PROBLEM TO BE SOLVED: To provide a pyrolysis gas re-combustion device for waste incineration in which air is blown into the re-combustion device on one step or several steps to proceed incomplete combustion, and then complete combustion is conducted in the last step, as a result, high temperature combustion is avoided and an amount of heat loss decreases, instead of a single-step pyrolysis gas complete combustion method having various problems due to production of high temperature combustion gases. SOLUTION: The re-combustion device 1 comprises separated re-combustion rooms 2 and 3 which are connected with each other with a connecting path 8. The inner wall of cooling pipes 11 fixed on the inside of the re-combustion rooms 2 and 3 is covered with a refractory wall 12. An air feeding nozzle 15 for mixing air A with a pyrolysis gas G is installed at the top of the re- combustion room 2, and an air feeding nozzle 16 is also installed in a downstream position from the nozzle 15. In addition, air feeding nozzles 17 for mixing air with a combustion gas G' are installed in the middle of the connecting path such that the nozzles surround around the connecting path 8.
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