Abstract: A versatile mixing nozzle for dispensing polyphase fuels into a combustion zone of a boiler. The nozzle is characterized by a plurality of mixing chambers, a relatively low pressure-drop spray nozzle design and a stationary dispersing disk and radiation-protective shield partially projecting in front of the nozzle outlet ports.

Abstract: An improved combustion process including emulsification of oil and water and conveying the emulsified oil and water, in the presence of some dispersing gas, under pressure into a combustion chamber where the gas aids rapid and excellent atomization of the emulsion.

Abstract: An oil burner, heating system has a supplementary system for delivering enriched, flammable, vapor, under pressure, to a vapor burner tip located within the flame pattern produced by the conventional atomized fuel burner tip. The vapor is formed by diverting a portion of the liquid fuel, pressurized by the burner pump, through a coil in the combustion chamber and thence to an outlet below the level of water in a pressure tank. The heated oil bubbles up through the water, and through a layer of oil floating thereon, to the upper portion of the tank for supply to the vapor tip.