Cyclonic burner with separation plate in the combustion chamber

摘要

A method and apparatus for burning fuel are described In a conventional boiler the combustion process produces particles which form a layer of deposits on boiler tubes, thus reducing heat transfer efficiency A fuel burner (100) includes a casing, a combustion chamber (106), a tangential gas inlet (108), a fuel delivery system (112) and an exhaust port (114) The casing includes a lower wall (102), an upper wall (104) and a cylindrical side wall (105) formed between the lower and upper walls (102, 104) and encloses the combustion chamber (106) The tangential gas inlet (108) is formed in the cylindrical wall (105) of the combustion chamber (106) The fuel delivery system (112) is configured to deliver fuel into the tangential air inlet (108) The exhaust port (114) is formed in the upper wall (104) of the combustion chamber (106) Gas is delivered into the combustion chamber (106) at a velocity and flow rate and mixes with fuel delivered from the fuel delivery system (112), such that a clean flame burns in the combustion chamber (106) A clean flame is a flame substantially free of unburned particulate matter.

主权项

1. A burner comprising:
a casing comprising a lower wall, an upper wall and a cylindrical side wall formed between the lower and upper walls and enclosing a combustion chamber; the combustion chamber; a plate separating the combustion chamber into an upper chamber and a lower chamber, with an annular gap between the plate and the cylindrical wall providing communication between the lower and upper chambers; the plate including one or more apertures, each aperture being in fluid communication with a gas supply and wherein gas is provided to the combustion chamber through the one or more apertures; a tangential gas inlet formed in the cylindrical wall of the combustion chamber; a fuel delivery system configured to deliver fuel into the tangential air inlet; and an exhaust port formed in the upper wall of the combustion chamber; wherein gas is delivered into the combustion chamber at a velocity and flow rate and mixes with fuel delivered from the fuel delivery system such that a clean flame burns in the combustion chamber, where a clean flame is substantially free of unburned particulate matter.