Method for reducing nox in a combustion process

Details Method for reducing nox in a combustion process Method for reducing nox in a combustion process

B - Operations, Transporting

01

D

23/353

B01D 53/34 (2006.01) B01D 53/56 (2006.01)

Patent

CA 2038951

2038951 9101793 PCTABS00003 The invention relates to a method for reducing emission of NOx in a combustion process in pressurized fluidized bed (11) with added absorbent, for example limestone or dolomite. Ammonia or another substance containing nitrogen or a substance producing ammonia or nitrogen is injected into the flue gas in order to react with the flue gas components in an initial zone (23) comprising a free space in which the flue gas and dust particles suspended therein are maintaining, and then in a second zone (20) in which the ammonia is brought in contact with a solid surface achieved by concentration of the dust particles.

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