Apparatus and method of reducing nitrogen oxide emissions

Details Apparatus and method of reducing nitrogen oxide emissions Apparatus and method of reducing nitrogen oxide emissions

1988-02-24

1988-10-25

Favors, Edward G.

Furnaces

With exhaust gas treatment means

Afterburning means

110214, 110345, 422183, F23B 500, F23C 900, F23G 706

Patent

active

047795450

ABSTRACT:
An apparatus and method for reducing nitrogen oxide emissions from furnace flue gas is provided in which a pulse generator introduces natural gas, or other fluid fuel which has little or no fixed nitrogen, into the upper portion of the furnace. The fuel pulse reacts with the nitrogen oxide in the flue gas to form ammonia-like compounds and nitrogen gas. These ammonia-like compounds react with additional amounts of nitrogen oxide in the flue gas to form nitrogen gas, water vapor and carbon dioxide. In this manner, the amount of nitrogen oxide in the flue gas is reduced using a process which can be easily applied to retrofitted furnaces.

REFERENCES:
patent: 4515089 (1985-05-01), Ehrlichmann
patent: 4661056 (1987-04-01), Vickery et al.

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