Method and apparatus for reducing NO.sub.x in exhaust gases from

Details Method and apparatus for reducing NO.sub.x in exhaust gases from Method and apparatus for reducing NO.sub.x in exhaust gases from

1985-09-06

1987-04-14

Favors, Edward G.

Liquid heaters and vaporizers

Miscellaneous

110204, 110205, 110206, 110207, 431115, B09B 300

Patent

active

046569723

ABSTRACT:
Temperature of exhaust gases from a fluidized-bed boiler is lowered by means of heat exchange and dust entrained in the exhaust gases is efficiently collected by a dust collector. Part of the gases discharged from the dust collector are mixed with heated combustion air and are charged into a fluidized bed. Therefore, problems caused by dust entrained in the exhaust gases to be mixed with the combustion air as well as the cold corrosion problem can be substantially solved so that the technique for reducing the NO.sub.x contents in the exhaust gases from the fluidized-bed boiler is satisfactorily established.

REFERENCES:
patent: 3781162 (1973-12-01), Rudd et al.
patent: 4286548 (1981-01-01), Brash
patent: 4505230 (1985-03-01), Caplin
patent: 4512266 (1985-04-01), Shigaki
"The Circulating Fluidized Bed for Utility Electric Power Generation", presented at a 1981 Joint Power Generation Conference, Oct. 4-8, 1981, St. Louis, Missouri.

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