Furnace system with reheated flue gas recirculation

Details Furnace system with reheated flue gas recirculation Furnace system with reheated flue gas recirculation

1980-12-15

1982-11-09

Favors, Edward G.

Heating

Work chamber having heating means

Combustion products heat work by contact

110304, 431215, 432182, F27D 1700

Patent

active

043582680

ABSTRACT:
The furnace system has a heating chamber wherein a rich combustion mixture is fed. The mixture has been preheated within a regenerator and the flue gas is ducted to another regenerator which is also fed with secondary air to more completely oxidize the flue gas. Part of the hot flue gas leaving the second regenerator is tapped and recirculated to the heating chamber and the remaining flue gas being fully oxidized is vented to the atmosphere. When the first mentioned regenerator becomes too cold to preheat the combustion mixture, given valves are opened and closed so that the combustion mixture first is preheated within the second regenerator, then burned, and directed to the heating chamber and the incomplete combustion flue gases are now ducted to the first mentioned regenerator to be completely oxidized as described before, and, in turn, to heat this regenerator. Again, part of the hot flue gas is reconducted to the heating chamber and the other part is being completely oxidized and is vented to the atmosphere.

REFERENCES:
patent: 1790172 (1931-01-01), Smith et al.
patent: 1798611 (1931-03-01), Leventry
patent: 1943957 (1934-01-01), Godard
patent: 3015357 (1962-01-01), Bain et al.
patent: 3527445 (1970-09-01), Stewart, Jr. et al.
patent: 4299561 (1981-11-01), Stokes

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