Energy conserving process furnace system and components thereof

Details Energy conserving process furnace system and components thereof Energy conserving process furnace system and components thereof

1976-01-27

1977-11-29

Camby, John J.

Heating

Work chamber having heating means

Combustion products heat work by contact

431 9, 432152, 432222, F27D 1700

Patent

active

040603792

ABSTRACT:
An energy conserving process furnace has a recuperator to utilize heat derived from exhaust gases in order to reduce fossil fuel consumption of the furnace. Elongated, enhanced surface ceramic heat exchanger tubes are used in the recuperator to recover heat energy from the exhaust gas. A preferred sealing arrangement is used between the metal and ceramic tubes to contain the combustion air. Heat is added by the recuperator to combustion air used in a fluid fuel burner.
A recirculating burner has a flame front outside of the burner in the combustion chamber. The recirculating burner means acts to reduce the combustion air requirements and to provide a combustion zone low in oxygen so as to prevent scale formation and oxidation of metals being treated in the furnace area.

REFERENCES:
patent: 1352481 (1920-09-01), Selden
patent: 2918117 (1959-12-01), Griffin
patent: 3146821 (1964-09-01), Wuetig
patent: 3954382 (1976-05-01), Hirose

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