Method for efficiently using flue gas energy in a glass furnace

Details Method for efficiently using flue gas energy in a glass furnace Method for efficiently using flue gas energy in a glass furnace

1988-05-18

1989-11-21

Envall, Jr., Roy N.

Industrial electric heating furnaces

Glass furnace device

Joule effect heating

65134, C03B 5027

Patent

active

048827363

ABSTRACT:
Raw materials are fed into the charging end of a melting section which is heated by electrodes in the glass bath. The melted charge is then clarified under fossil fuel burners in a clarifying section, where the highest temperature of the furnace is maintained, and homogenized in a homogenizing section from which the clarified melt is drawn. Flue gas from the clarifying section sweeps the surface of the melting section countercurrently to the charge and is then used to heat combustion air. Burners in the clarifying section are operated under air starved conditions to reduce nitrogen oxides, while burners in the melting section are operated with excess air to achieve complete combustion.

REFERENCES:
patent: 2658095 (1953-11-01), Arbeit et al.
patent: 3108149 (1963-10-01), Carney et al.
patent: 3218144 (1965-11-01), Touvay

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