Industrial electric heating furnaces – Glass furnace device
Patent
1995-04-20
1997-08-19
Hoang, Tu B.
Industrial electric heating furnaces
Glass furnace device
373 28, 373 31, 373 33, 65 27, 65327, 266 44, C03B 502, C03B 3709
Patent
active
056595646
ABSTRACT:
The bottoms of exhaust stacks and systems on glass melting furnaces usually collect slag that is produced by volatiles in the exhaust gases condensing out and forming a glassy substance on the cooler walls of the stacks, etc. which then runs down the walls picking up refractory and forming a slag in the lowest places. This slag often cools to hardness or a high viscosity, tough mass. It has to be removed periodically to prevent building up to the point that slag would run back into the furnace damaging the glass and removal is a hot, dirty, time consuming job. This problem is worse on oxy-fuel furnaces which the industry is trending towards for other advantages. The present invention eliminates this problem by reducing the size of the reservoir in the bottom of the stack and adding a heated bushing with an orifice that continually drains the slag from the small reservoir.
REFERENCES:
patent: 2188927 (1940-02-01), Slayter
patent: 2790019 (1957-04-01), Stalego
patent: 2919297 (1959-12-01), Augsburger
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patent: 4023950 (1977-05-01), Glaser
patent: 4146373 (1979-03-01), Sullivan et al.
patent: 4438518 (1984-03-01), Gaul et al.
patent: 4678491 (1987-07-01), Tsai
Hoang Tu B.
Quinn Cornelius P.
Schuller International, Inc.
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