Patent ID: 6409499
Filing Date: 2002-06-25
Classification: F23C,F23L,Y02E

Abstract:
A method of combustion comprising the steps of:a) mixing flows of a first fluid fuel and a first fluid oxidant each having a velocity to produce a first, substantially homogeneous, sub-stoichiometric stream close to, at or below the lower flammability limit at ambient pressure; b) mixing flows of a second fluid fuel and a second fluid oxidant each having a velocity to produce a second, substantially homogeneous, super-stoichiometric stream close to, at or above the upper flammability limit at ambient pressure; c) combusting said first and second streams separately and substantially simultaneously to produce first and second products of combustion, combustion of the second stream being sustained; d) mixing the first and second products of combustion upstream of a nozzle means so as to produce a substantially homogeneous mixed stream, and e) passing the mixed stream through the nozzle means and causing the mixed stream to combust downstream thereof, whereby the first and second fluid fuels are substantially combusted.