Waste gasification melting furnace

Abstract

The invention provides a waste gasification melting furnace, which can promote the drying / thermal decomposition of the waste in the shaft, so as to suppress the moisture and volatile matter carried when reaching the bottom of the furnace, thereby reducing the consumption of extra coke. The waste gasification melting furnace (1) includes: a vertical shaft (2) for drying and thermally decomposing waste filled inside, and has a waste inlet (21) and a furnace gas outlet ( 22), its bottom side has an opening (23) for discharging waste; the melting furnace part (4), its furnace core and shaft part (2) are dislocated, and its upper side has waste and charcoal for pyrolysis. The opening (46) of the solid fuel has a tuyere (42) for blowing oxygen-enriched air for combustion on its furnace bottom side; the communication part (5) is connected to the bottom side opening (23) of the shaft. ) and the upper side opening (46) of the melting furnace part, the communication part includes a carbonization furnace grate part (3) arranged at a position to bear the load of the waste filled in the shaft part (2), and the The air blowing device (3) for blowing the air for drying / pyrolysis that accounts for more than 60% of the total oxygen blown into the furnace from the carbonization furnace grate part (3) to the shaft part (2) A supply device (3) for supplying pyrolyzed waste on the carbonization furnace grate to the upper opening (46) of the melting furnace (4).

Description

technical field [0001] The present invention relates to a waste gasification melting furnace which dries and thermally decomposes the waste loaded from the upper part of the furnace, further melts the thermally decomposed residue, and recovers the molten residue from the bottom of the furnace. Background technique [0002] As a general method of processing waste such as waste or industrial waste, for example, the waste is melted in an industrial furnace using a carbon-based solid fuel such as coke as a melting heat source. Treatment based on molten waste has the advantage of not only reducing the volume of waste, but also reusing incineration ash or non-combustible waste previously disposed of in landfill as slag or metal. [0003] Shaft-type gasification melting furnaces are known as facilities for melting waste (for example, refer to Patent Document 1 and Patent Document 2). The waste gasification and melting furnaces disclosed in Patent Documents 1 and 2 have a furnace m...

AI Technical Summary

Problems solved by technology

The additional consumption of coke not only increases the operating cost, but also faces an increase in CO from fossil fuels. 2 the issue of emissions

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