B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/86 (2006.01) F23J 15/02 (2006.01) B01D 53/36 (1990.01)
Patent
CA 2104321
METHOD AND APPARATUS FOR REDUCING NOx EMISSIONS ABSTRACT OF TEE DISCLOSURE An apparatus for reducing NOx pollution in the flue gas produced by a burner includes a heat exchanger wherein at least some of the heat transfer elements are coated with a catalyst. A plurality of reactive gas injectors are arranged to introduce a nitrogeneous compound, preferably a source of ammonia, across a hot-end face of the heat exchanger. A reactive gas flow distribution system permits the distribution of the nitrogeneous compound flowing through at least some of the gas injectors to be varied responsive to the temperature profile of the heat exchanger. Preferably, the apparatus also determines the total NOx flow in the flue gas, and the reactive gas flow distribution system permits the total amount of reactive gas flowing through at least some of the gas injectors to be varied responsive to the total NOx flow in the flue gas.
Krigmont Henry V.
Spokoyny Felix E.
Macrae & Co.
Wahlco Environmental Systems Inc.
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