Method and system for preheating combustion air

Details Method and system for preheating combustion air Method and system for preheating combustion air

1989-10-06

1990-06-12

Davis, Jr., Albert W.

Heat exchange

Regenerator

Movable heat storage mass with enclosure

165 36, 1651341, 165921, 122DIG2, F28D 1502, F23L 1500

Patent

active

049324640

ABSTRACT:
A combustion air heating system includes both an air heater for preheating the combustion air by heat exchange with flue gases and an air preheater for preheating the combustion air prior to entry into the air heater. The air preheater operates by heat exchange between the combustion air discharge from the air heater and a bypass stream of combustion air located upstream of the air preheater. The amount of combustion air flowing through the bypass duct is controlled so that the temperature in the air heater does not fall below the dew point of the acid gases present in the flue gas.

REFERENCES:
patent: 2321129 (1943-06-01), Cooper
patent: 2363870 (1944-11-01), Karlsson et al.
patent: 2468826 (1949-05-01), Karlsson et al.
patent: 2769619 (1956-11-01), Juhasz
patent: 2947522 (1960-08-01), Keller
patent: 4129176 (1978-12-01), Heyn et al.
patent: 4318366 (1982-03-01), Tompkins
patent: 4416325 (1983-11-01), Barratt et al.
patent: 4483391 (1984-11-01), Gilbert
patent: 4537247 (1985-08-01), Okamoto et al.
"Air Heaters and Economizers", Power Magazine, Jun. 1988, pp. B-68 to B-70.

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