To provide a microwave jointly used melting furnace which relieves a temperature gradient at the melting surface, restraining generation of incomplete combustion objects such as a precursor of dioxin group at the time of melting wastes such as municipal waste, municipal waste burned ash, sludge, organic sludge caused by water treatment, industrial waste, contaminated soil and the like, and rapidly raises the temperature of melted objects up to combustion/melting temperature.
This melting furnace comprises: an outer sleeve 34 which reserves the melted objects 41 and has a slag port 35 at the center of a bottom part; a furnace ceiling 37 which is loosely fitted into an inner part of the outer sleeve 34 to be disposed; a combustion device 39 which is disposed at the furnace ceiling 37; a furnace rotating device 36 which rotates and drives the outer sleeve 34 in the circumferential direction of the furnace ceiling 37; and a main combustion chamber 43 which is formed between the furnace ceiling 37 and the outer sleeve 34. A melting surface 42 in a reversal conical shape is formed toward the slag port 35 from an outer circumferential edge of the furnace ceiling 37 by a surface layer of the melted objects 41 facing the main combustion chamber 43, and a microwave exposure device 49 for exposing the microwave to an upper side part of the melting surface 42 is provided at the furnace ceiling 37.
| JPS5214080 | METHOD FOR RE-INCINERATION |
SHICHIRI MASATAKA
SATO JUN
GOTO KENJI
KUBOTA KK
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