F - Mech Eng,Light,Heat,Weapons – 23 – L
Patent
F - Mech Eng,Light,Heat,Weapons
23
L
158/3
F23L 9/00 (2006.01) F23C 1/00 (2006.01) F23C 6/04 (2006.01) F23C 7/00 (2006.01) F23M 5/08 (2006.01)
Patent
CA 1073335
Abstract This invention provides an apparatus and method for reducing atmospheric pollutants namely, oxides of nitrogen, resulting from the combustion of solid fuels. A multiplicity of primary combustion chambers is supplied with a regulated amount of air for fuel combustion within the range of 50 to 70% of total stoichiometric air to control gas temperatures therein and which discharge into a secondary chamber wherein a regulated amount of air within the range of 50 to 70% of total stoichiometric air is introduced to further control gas temperatures and complete the combustion of the fuel, resulting in a total quantity of combustion air supplied to both primary and secondary furnaces in the range of 105 to 125% of total stoichiometric air. This invention is an advance over prior art in providing a method and apparatus for the combustion of solid fuel under controlled gas temperature and airflow con- ditions to reduce atmospheric pollution.
287918
Barsin Joseph A.
Marshall David M.
Pirsh Edward A.
Babcock & Wilcox Company The
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