Process furnace with a split flue convection section

Details Process furnace with a split flue convection section Process furnace with a split flue convection section

1992-05-05

1993-09-28

Favors, Edward G.

Liquid heaters and vaporizers

Plants

Feed water heaters

122 7R, 122470, F22B 3300

Patent

active

052479072

ABSTRACT:
A process furnace and method of operating a furnace are disclosed. The furnace comprises a radiant heating chamber, a primary convection section leg, a secondary convection section leg with two or more parallel flow channels, convection burners to heat the primary and/or secondary convection sections and dampers to adjust flue gas flow and temperature through the parallel flow channels. Combustion air comprising a mixture of gas turbine exhaust and fresh air which has been preheated in one of the parallel flow channels s supplied to the burners. The split flue design facilitates greater control of the flue gas temperature for improved operating efficiency.

REFERENCES:
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patent: 3094391 (1963-06-01), Mader
patent: 3097631 (1963-07-01), Martin
patent: 3424695 (1969-01-01), Von Wiesenthal
patent: 3426733 (1969-02-01), Von Wiesenthal
patent: 3575002 (1971-04-01), Vuia
patent: 4576121 (1986-03-01), Thorogood
patent: 4665865 (1987-05-01), Zubrod
patent: 4706612 (1987-11-01), Moreno et al.
patent: 4784069 (1988-11-01), Stark
patent: 4999089 (1991-03-01), Nakase et al.

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