Abstract: A method for improving the flame combustion of carbonaceous fuels. The method enables the reduction of oxides of nitrogen generated by the flame combustion, and enables an improvement in boiler efficiency. An ionic sodium or potassium compound, or a combination of them, is supplied with the combustible mixture of fuel and air so as intimately and uniformly to be present where and when the flame exists. Preferably the compound is supplied in an aqueous solution, and can be intimately mixed with the fuel, or with the atomizing air or steam, or with the combustion air. The process is useful with both single-stage and staged (multiple-staged) combustion systems.

Abstract: An atomizing fuel oil nozzle having a plurality of oil and gas mixing chambers in which the entry of the gas creates a suction that enhances the atomization of the oil and a flow chamber downstream of the mixing chambers through which the atomized mixture passes before being discharged through an orifice.A method of mixing and atomizing fuel oil with a gas wherein the gas has a substantially higher pressure and velocity than the oil in the mixing chamber, the flow of the gas creating a substantial suction in the mixing chamber from which the gas and oil mixture pass through a flow chamber before being discharged through the nozzle orifice.