Cylindrical burner apparatus and method
AssigneeGastech Engineering LLC
InventorYul E. Shaffer
Life of this patent
Estimating the term…
Abstract
A cylindrical burner apparatus and method which produce low NOx emissions and low noise levels without being dependent upon a blower, or natural draft, for providing air flow or flue gas recirculation. A flow of combustion air is induced into an initial tube pass of the burner by discharging a gas fuel from a plurality of discharge ports located in the initial tube pass. At the same time, a flow of recycled flue gas is induced through a bypass duct between a subsequent tube pass of the burner and the initial tube pass by discharging one or more jets of gas fuel through the bypass duct.
Claims12
A method of operating a cylindrical burner, without forced air and without dependence on natural draft, while also producing low NOx emission and noise levels, the method comprising the steps of:
- a) inducing a flow of combustion air into a rearward end of an initial tube pass by discharging jets of a gas fuel from a plurality of fuel discharge ports positioned in the initial tube pass forwardly of the rearward end, the initial tube pass having a longitudinal axis, and
- b) inducing a flow of recycled flue gas from a subsequent tube pass into the initial tube pass, via a flue gas recirculation duct extending between the subsequent tube pass and the initial tube pass, by discharging one or more jets of the gas fuel which travel through the flue gas recirculation duct.
Dependencies are inferred from the claim text.