Coal combustor and slag exhausting device therein

Details Coal combustor and slag exhausting device therein Coal combustor and slag exhausting device therein

1993-04-30

1994-07-26

Favors, Edward G.

Furnaces

Utilizing powdered fuel

Having rotary flow means

110165R, F23D 102

Patent

active

053319060

ABSTRACT:
In order to stably maintain a combustion capability in a combustion furnace for coal gassification, it is necessary to exhaust molten slag produced within the furnace without the slag stagnating. The present invention provides, in a combustion furnace for coal gassification, a slag exhausting device which is configured in such a manner that the cooling of molten slag being exhausted from the furnace is minimized to prevent the slag from solidifying and causing other slag to stagnate. The slag exhausting device is disposed at the center of a bottom wall of the combustor, and has a lower cylindrical portion and an upper bank opening upwardly and flared at an angle of 300.degree.-45.degree.. The height H from the bottom wall to the top of the upper bank, a height L and an inner diameter ds of the cylindrical lower portion and a diameter D of the combustor are set to satisfy the relations of ds/D=0.2-0.4, L/ds=0.2-0.6 and H/D=0.05-0.15.

REFERENCES:
patent: 3039406 (1962-06-01), Aref
patent: 4473014 (1984-09-01), Dejanovich
patent: 5050512 (1991-09-01), Tratz et al.

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