Importance

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Abstract

Various smoke and combustible gas combustors (200, 300) are disclosed, and also disclosed are systems (100, 200) combining gas combustor with inventive burner. Such a burner (100 or 100') provides combustion of a particulate fuel such as sawdust, and many types of varying moisture content biomass fuels such as poultry litter. The combustors and burners exhibit a high turndown ratio [`TDR']. The smoke or combustible gas combustors (200, 300) are combined synergistically with such a burner (100, 100'), or combined with another suitable burner, so as to provide high temperature burner output gases to the combustor, which has coaxial inner and outer combustion chambers (352, 356) inlet tuyere(s) connected to the inner combustion chamber for introducing combustible smoke or other gases to be burned into the inner combustion chamber at one end thereof with cyclonic flow, and in which combustion air is mixed with combustible smoke or other gases to form a gas stream moving through the inner combustion chamber with cyclonic movement. A preheat tube (331) within the combustible gas heating chamber receives heated exhaust gases from the burner, and communicates with the inner combustion chamber exit through a plurality of apertures (364) for controlled flow of said heated exhaust gases into the gas stream and so heating same by mixing the exhaust gases with the stream of air and combustible gases.

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First Claim