Abstract: The present invention resides in a dual fueled burner gun providing reduced production of oxides of nitrogen. The gun operates in a gaseous fueled mode when it is charged with a gaseous fuel or in a liquid fueled mode when it is charged with a liquid fuel. The gun may also operate in a gaseous/liquid fueled mode in which it is charged with both the gaseous and liquid fuels.

Abstract: An oil burner atomizer and method for light and heavy fuel oils where the oil is spread circumferentially of a number of oil delivery bores and two heavy oil flows are formed for each delivery bore. The oil flows are atomized in low-pressure primary air. The atomizer includes an annular low-pressure oil ligament formation zone upstream of the initial atomizing air flow.

Abstract: A disinfectant system for intermingling a disinfectant with an effluent to be treated, such as wastewater, to kill pathogens therein, the system enhancing contact between the effluent and the disinfectant to effect a rapid and efficient disinfection action. The system includes an ejector through which a minor portion of the effluent is pumped to produce a motive fluid which induces a disinfectant therein to produce a concentrated disinfectant fluid. Th ejector terminates in a cylindrical diffuser section having a closed end and at least two circumferential series of orifices whereby the disinfectant fluid is discharged therefrom as high velocity jets which project radially with respect to the longitudinal axis of the section.

Abstract: An atomizing unit comprises a plurality of nozzle-members, each of which is capable of producing a compressed air flow entraining a number of minute liquid-particles. The nozzle-members are mounted on the unit in a manner such that respective tube-like flows of two-phase discharged from the respective nozzle-members further violently collide among them at a point forwardly spaced by a predetermined distance from a leading head of the unit. By the arrangement mentioned above, minute liquid-particles entrained by the respective tube-like flows are further split into a still large number of much finer liquid-particles and then further forwardly dispersed as a stream of mist by a secondary flow produced at the point mentioned above.

Abstract: This invention relates to a binary fluid burner device with burner units combined which functions as if it were a single large-capacity burner, in which small-capacity burner units are combined and mounted on a single burner head to form an integral burner device, and the flames from the burner units are integrated.

Abstract: To provide combustion stability in burners over a wide range of flow conditions, a coaxial injector is provided which includes an outer annular sleeve for introduction of one reactant and a hollow pintle with spaced slots for introduction of another reactant to impinge on the first reactant. The slots are staggered in location and size to permit initial interlocking of the reactants and, therefore, increased mixing and improved combustion performance.

Abstract: The atomizing device of the present invention comprises a cylindrical swirl chamber provided with a nozzle, and a pipe running coaxially through the chamber and the nozzle to protrude into the zone of material atomization. The device is provided, according to the invention, with another chamber which is essentially an acoustic resonator, the outlet end of said pipe entering the interior of the second chamber which adjoins the nozzle. The second chamber is implemented as a quarter-wave acoustic resonator. The present invention can find most utility when applied in those industries where quality atomization and/or mixture-formation of various materials is involved, such as in the chemical engineering industry.

Abstract: A burner system for burning gaseous or liquid fuel, comprises a primary burner system, which includes a liquid burner tube closed at one end and provided with a plurality of primary combustion ports symmetrically arranged to provide a plurality of jets forming a conical sheet of particles of fuel. Surrounding the liquid burner is a gas burner tube, which comprises the annular space between two coaxial tubes closed at the end, and including therein a plurality of primary combustion ports arranged symmetrically to provide jets arranged on the surface of a cone. Combustion air is drawn into the space around the gas burner tube, to supply combustion air for the liquid and/or gaseous fuel. Upstream of the primary combustion ports is a secondary burner which is circular in configuration, and surrounds, and is spaced from the gas burner tube. A limited quantity of gaseous fuel is supplied in the form of a circumferentially directed jet in the lee of an annular plate.

Abstract: Apparatus for burning gaseous and liquid fuels in a furnace, to retard formation of NO.sub.x, comprising a fuel tube of selected length and diameter, closed at the end which is inserted into a combustion zone. There are a plurality of ports drilled in the closed end of the fuel tube, the axes of which lie on a conical surface coaxial with the fuel tube. The fuel tube is inserted coaxially into a burner tube of selected larger diameter, and the distant ends are substantially coplanar. A plurality of jets of low pressure steam are injected through a plurality of ports into the annular space between the fuel tube and the burner tube at the outer end of the burner tube. The steam jets flowing through the ports induce a flow of primary combustion air, which mixes with the steam and flows down the annular space to mix with the high velocity jets of fuel as they emerge from the ports on the fuel tube. The fuel, air, and steam mix together prior to entering the combustion reaction zone.

Abstract: A refractory burner block having a generally cup shaped depression is adapted for mounting in the furnace wall, with the depression facing the furnace interior. The block is provided with a bore that extends from the cup shaped depression to accommodate a burner nozzle. Resilient means connect the burner block with the cover plate so that both block and cover plate may independently contract and expand, minimizing stress loads on the cup, resulting in less cup cracking and failure.A joint is provided with a step between the furnace wall and the burner block, reducing the possibility of gaps opening up and forming a barrier to radiant heat and to convection flow.A central locating collar relieves the anchor bolts from undue stress in supporting the burner block. A resilient seal is used to seal the block against the central locating collar.Pilot means to light the main burner and plenum means to buffer the pilot from the main burner are provided to reduce pilot "blowout.

Abstract: A regenerative tile structure for fluid fuel burners having a zirconium oxide coated metal flange shaped member providing a central orifice for producing a significant and very rapid increase in flame temperature by guided recirculation of hot flame gases.

Abstract: A low pressure fuel stream is injected into a carburetor by way of a fuel tube injector combination having an insulating air space provided between the internal flow path structure and the outer surface of the combination which is exposed to relatively high temperatures. The fluid stream is thus maintained at a relatively low temperature and pressure until it is discharged from the fuel injector, at which time a surrounding airstream prevents the direct contact of the fuel flow with the surface of the fuel injector, and therefore prevents any carbon build-up which would otherwise occur on or near the fuel exit orifice.

Abstract: In apparatus for spraying heat responsive materials, a serpentine path is provided so that a flow of compressed air or an inert gas first traverses the inside surface of the housing in order to maintain the outside surface of the apparatus in a relatively cool condition. The compressed air or inert gas continues to flow along its serpentine path, being gradually heated, and then is centrally discharged together with the material to be sprayed which may, for example, be a powder in the form of a pure resin or a mixture. In order to prevent "powder balling" or "spitting" of the resin as it is discharged, baffle means are provided surrounding the nozzle so that the heated compressed air or inert gas does not come into contact with the resin until it is in a mixing chamber that is downstream of and away from the nozzle.

Abstract: Secondary and tertiary air passages through the air nozzle surround the primary compressed air passage and induce a flow of low pressure air which surrounds the stream of compressed air to reduce the noise to acceptable levels. When the outlet end of the nozzle is blocked, flow through the tertiary air passages reverses to allow the compressed air to escape therethrough.

Abstract: A gas gun for producing a hydrogen and carbon monoxide rich reduction gas by partially combusting a gaseous fuel. The tip of the gas gun is provided with at least two groups of radially-directed gas discharge nozzles, the nozzles of one group having a larger diameter than those of the other group.

Abstract: A burner operative to inject fuel and a portion of the amount of air required for stoichiometric combustion as a core into a combustion zone and the balance of the air required for substantially stoichiometric combustion is introduced coaxially around the core to form an air jacket. The burner includes a central fuel delivery pipe, a first coaxial atomizing air delivery pipe and a second coaxially surrounding air delivery pipe. The central fuel delivery pipe terminates in an outer conical surface and the first coaxial air delivery pipe terminates in a spaced coaxial inner surface and a shaped transverse outer surface for shaping the central fuel-rich flame core. The second coaxial air delivery pipe delivers an air jacket to form the fuel core and additional air is delivered coaxially around a baffle assembly and in a direction generally parallel to the core for additional flame shaping.