Abstract: A Glycerin Fueled Afterburning Engine utilizes the power generation unit exhaust heat to pre-heat the glycerin, or similar difficult to combust fuel, and then utilizes regenerative burner heating to fully vaporize and superheat the fuel above the auto ignition temperature. The combustion inlet air is also highly preheated by the recuperative power generation cycle. The actual combustion process is then accomplished by hypergolic ignition from mixing the hot vapor with the hot air. The overall engine process operates on a cycle of (1) air compression, (2) indirect heating of air in an air heater, (3) air expansion, (4) air heating by combustion, and (5) air cooling by heat transfer to the incoming compressed air charge in the recuperator.

Abstract: Improved combustion of liquid fuel is achieved with a porous fiber burner by forming a mixture of the vaporized fuel and all of the desired combustion air sufficiently heated to prevent condensation of the vaporized fuel, and introducing the heated mixture into the porous fiber burner to effect flameless combustion on the outer surface of the burner. The resulting surface combustion produces a high proportion of radiant heat and increased thermal efficiency while suppressing the formation of nitrogen oxides and other pollutants in the flue gas. Periodically, fuel gas may be supplied to the same porous fiber burner.

Abstract: Apparatus and method are described for the vaporization of liquid fuel oils to produce a gaseous mixture suitable for burning in a burner normally designed for operation utilizing natural gas.

Abstract: For use as a replacement for existing gas to burners, oil having an API gravity of about 10-80 is preheated and mixed with about 0.1 to 1 pound of steam per pound of oil, at a pressure of about 30-150 pounds per square inch gauge. The resulting mixture is heated to a temperature above the condensation temperature of the mixture, the temperature being approximately in the range of 450.degree.-800.degree. F. The mixture has flow properties which are essentially equivalent to those of gas under the same conditions of temperature and pressure. The mixture is delivered to the nozzle of the gas burner and is burned therein.An apparatus is provided for burning either oil or gas, and includes a gas burner having nozzle means for mixing air and gas, a gas conduit connected thereto, and an oil supply also connected to the burner, the oil supply being fed from an oil vaporizing apparatus as just described above.

Abstract: Disclosed herein is an oil burner system for burning residual type fuel oils in a high temperature combustion zone or chamber, which includes a method and apparatus for operating the system to maintain the fuel oil at a low viscosity while preventing thermal failure by destruction of the burner which protrudes into the combustion zone or chamber. The fuel oil is preheated and introduced into an oil tube extending through a high temperature furnace wall into the combustion zone or chamber, and also a heated fluid is introduced into the oil tube for passage therethrough with the fuel oil, while the outer periphery of the oil tube is cooled where it passes through the furnace wall and into the high temperature combustion zone or chamber, as well as fabricating the oil tube from a material having a low coefficient of thermal conductivity.

Abstract: This invention comprises a method whereby heated residual fuel oils can be successfully burned in existing conventional forced atomizing air type small capacity industrial oil burners.