Combination burner and exhaust gas recirculation system for a ca

Details Combination burner and exhaust gas recirculation system for a ca Combination burner and exhaust gas recirculation system for a ca

1980-11-19

1982-01-12

Camby, John J.

Heating

Work chamber having heating means

Having means by which work is progressed or moved mechanically

432152, 432200, 432241, F27B 900

Patent

active

043103014

ABSTRACT:
A carbottom furnace is described as having high velocity or high momentum-type stoichiometric burners, rather than excess air-type burners. Hot exhaust gas, removed from the furnace, is recirculated immediately back to the heat treatment chamber of the furnace, without reheating, in a manner which compliments and reinforces the swirling flow of gas created in the chamber by the high momentum burners. This recirculation of exhaust gas is especially useful during normal turndown of the burners to maintain sufficient volume of heated gas within the chamber to properly heat treat the articles or workpieces which are positioned within the chamber.

REFERENCES:
patent: 3920382 (1975-11-01), Hovis et al.
patent: 4083677 (1978-04-01), Hovis
patent: 4235591 (1980-11-01), Aebli

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