Abstract: In a high efficiency regenerator burner for heating spaces, the exhaust gas generated by the burner is provided which is conducted alternately through different regenerator cartridges and a partial stream of the exhaust gas is conducted under the control of an orifice plate through a bypass space in which the regenerator cartridges are disposed. A control structure is disposed in a burner head for controlling the exhaust gas bypass flow volume and also to control the main exhaust gas flow as well as the combustion air flow through the regenerator cartridges.

Abstract: A combustion air supply apparatus 9 of alternating heat exchange type supplies combustion air and discharges combustion exhaust gas at a flow velocity of 80 to 200 m/sec. A burner assembly 4 is configured in such a manner that low-caloric fuel gas is pre-heated with heat of pre-combusting high-caloric fuel gas before the low-caloric fuel gas reaches a mixing starting space CA in the combustion chamber where the pre-combusting high-caloric fuel gas and the low-caloric fuel gas come to burn together in a full scale in the mixing starting space CA. When an air amount of the combustion air supplied through the high-temperature air supply ports of the plurality of fuel gas combustion apparatuses is defined as Q1 and an air amount of the pre-combustion air to be mixed with the high-caloric fuel gas, supplied from the fuel gas combustion apparatuses, is defined as Q2, a total air amount (Q1+Q2) is 1.02 to 1.10 times more than a theoretical air amount QS required for combustion, and a ratio of Q2/(Q1+Q2) is 0.

Abstract: A burner with staged fuel injection includes at least two separate stages (4a, 4b) for fuel injection arranged along the swirl body (1). The burner is distinguished in that, between the first and the second stage (4a, 4b), a separating element (8) is provided, which extends in the direction of the combustion chamber (3) and separates the combustion air flow which enters in the region of the first stage (4a) from the combustion air flow which enters in the region of the second stage (4b). The burner can be operated with low combustion pulsations even in the case of low burner powers.

Abstract: A combustion burner comprises: an air supply passage for supplying an air to a heating furnace; a primary fuel nozzle for supplying a primary fuel to the air supply passage; secondary fuel nozzles arranged around the air supply port of the air supply passage; and the secondary fuel nozzles being arranged so that a distance L (mm) from an outer periphery of the air supply port to the outer periphery of the secondary fuel supply port is larger than the diameter Da (mm) of the air supply port. A combustion method comprises: injecting fuel substantially from the primary fuel nozzle when an infurnace temperature of the heating furnace is lower than a fuel ignition temperature; and injecting fuel substantially from the secondary fuel nozzle when an infurnace temperature of the heating furnace is higher than a fuel ignition temperature.

Abstract: A multivortex device is provided comprising a series of adjacent plates with specially designed grooves and perforations which, when mounted transversely of a uniform fluid flow in a duct, results in the formation of numerous small adjacent flow vortices either all rotating in the same direction (co-vortices) or adjacent vortices rotating in opposite direction (countervortices). The fluid at the peripheries of adjacent co-vortices move in opposite directions and friction converts their rotational kinetic energy into turbulence within a few vortex diameters downstream from the multivortex device. The fluid at the peripheries of adjacent counter-rotating vortices move in the same direction, such that they roll upon one another substantially without friction and persist for many vortex diameters downstream from the multivortex device. The adjacent plates of the multivortex device can be provided with additional grooves and passageways which allow a second and/or third fluid to be introduced within each vortex.

Abstract: Regenerative glass melting furnace of the type having a batch section where glass is melted, a port neck where combustion air is introduced, and burners supplied by fuel inlet nozzles in the floor, the roof, and the lateral walls of the port neck.

Abstract: A burner suitable for heating a furnace chamber of an industrial furnace which is equipped with a recuperative preheater for combustion air has a combustion chamber at one end and a feed-through cap at the other end which is accessible outside of a furnace in which the burner is installed. The tubular recuperative preheater is of the coaxial countercurrent flow configuration extending between the combustion chamber and an annular outflow collector cap. A coaxial fuel pipe is centered in the burner extending to the combustion chamber. Overheating of the burner cap is prevented by means of a spacer sleeve of small heat conductivity interposed between the preheater and the burner cap. This permits the valves to be seated in the burner cap without risk of thermal damage. For protection of personnel against contact with hot surfaces, a perforated metal shield is provided between the burner cap and the outflow cap of the recuperator, essentially covering all the portions of the burner outside a furnace wall.

Abstract: A combustion heating device for use for example with oil processing equipment defines a combustion chamber within which combustion wholly takes place. The combustion chamber consists solely of a sleeve and end plate defining a vertical cylinder and a layer of ceramic fiber insulating material inside the sleeve defining the inner surface of the combustion chamber. A burner is mounted in a bottom plate of the device which can be pivoted to an open position exposing the burner for service. Air channels are defined on the outside of the sleeve so that incoming combustion air passes over the sleeve and acts as a heat recovery for any heat escaping from the insulating material. An outlet duct at an upper end of the combustion chamber at right angles to the combustion chamber extracts the combustion gases so that all heat exchange takes place outside of the combustion chamber. The device improves heating efficiency and reduces corrosion of heat transfer surfaces.

Abstract: The invention relates to a process and to an apparatus for the conversion of hydrocarbons. According to the invention, at least one first gas containing at least 20% of oxygen by volume and a type of hydrocarbon are first all circulated in separate streams which are parallel to each other, without their being mixed, according to a spatial distribution such that the first gas is surrounded by the hydrocarbon; these substances are introduced into a mixing/reaction chamber at a first given circulation level, and while the substances are then allowed to mix, the oxygen and the hydrocarbon are ignited so as to give rise to the conversion reaction and then, at a second given circulation level situated downstream of the first, a quenching of the resultant mixture is performed in a chamber, the resultant quenched conversion products are recovered. The invention applies particularly to the manufacture of conversion products such as acetylene and ethylene.

Abstract: Waste materials are efficiently and completely incinerated in a gasification unit with a minimum amount of fly ash while ensuring complete sterilization of residual materials. The gasification unit includes a refractory liner which is stepped to define primary, secondary, and tertiary combustion chambers where waste materials are completely incinerated. A fan is adapted to draw combustion air past the outer surface of the refractory liner to initially heat the combustion air while simultaneously cooling the refractory liner. The fan is further adapted to force combustion air under pressure into a preheating chamber in which the combustion air is preheated before passing into the primary and secondary combustion chambers. Turbulence in the combustion chambers, brought about through equalization of air pressure in the preheating chamber, is effected through the provision of tangential air inlets in the walls of the refractory liner.

Abstract: A regenerative burner includes a chamber containing heat storage bodies which extract heat from hot products of combustion flowing through the burner during one part of a cycle of operation and yield up that heat to incoming air during a further part of the cycle.

Abstract: A regenerative burner includes a chamber containing heat storage bodies which extract heat from hot products of combustion flowing through the burner during one part of a cycle of operation and yield up that heat to incoming air during a further part of the cycle.

Abstract: Device for improving the heating of a channel (2) for distribution of glass (1), said device including a cylindrical duct (6) connected at its upstream end to means (7) for feeding a premixture of air and fuel gas and whose downstream end (8) opens inside a cylindrical bore (9) in a refractory block (10) inserted in a wall (11) of the channel, said cylindrical bore (9) extending by means of a coaxial cylindrical duct (12), of smaller diameter than that of said bore, the cylindrical channel (6) being surrounded by a sealing ring (13) which covers the face of the cylindrical bore (9) in which said channel (6) is inserted.

Abstract: The invention relates to an air-cooled combustion chamber wall for combustion furnaces. The combustion chamber wall comprises at least one masonry wall with a space in the middle for the passage of cooling air along the side of the wall away from the combustion chamber side. To create a simple, stable and effective structure, the invention proposes that the masonry be made of bricks, whose walls enclose at least one air duct.

Abstract: The present invention relates to a method and apparatus for waste heat recovery and reduction in industrial furnaces and heating equipment. The method of heat recovery comprises directing the exhaust gases through a system of channels inside the refractory wall where heat from the flue gases is transferred to the refractory lining and also to the combustion air traveling inside of a heat exchanger also located inside said channels. The high temperature exhaust flue gases traveling along said channels increase the hot face temperature of the refractory wall and reduce the heat flux from the working chamber through the refractory wall. An apparatus for the realization of the heat recovery method includes a flue duct, a recuperator, hot air piping and a hot air burner, all located inside the furnace wall refractory lining.

Abstract: An incinerator for burning waste material includes an outer steel housing having a refractory liner that defines a combustion chamber. A series of channels are secured to the inner surface of the housing and provide vertical air flow passages. The lower ends of the passages are open to the atmosphere, while the upper ends are connected to a plenum and air is drawn through the passages by a blower to thereby preheat the air and cool the outer housing. A portion of the preheated air is directed to the stack for secondary combustion purposes, while a second portion of the preheated air is returned through vertical passages in the end of the housing to a pair of lower plenums and then introduced into the lower end of the combustion chamber for primary combustion purposes. The incinerator also has an improved feed assembly for feeding waste material to the combustion chamber, which includes a hopper, a triple hydraulic cylinder and a ram movable within the hopper.

Abstract: An improvement in method and apparatus of fluidized beds involving heat or combustion by pre-heating the exterior and interior of the fluidized bed in unison through the use of an exterior chamber surrounding the fluidized bed chamber. This exterior chamber also provides equalization of fluidizing gas temperature with internal fluid bed temperatures during operation of the bed and allows for a scaling down of the fluidized bed to a small size without sacrificing high efficiency.

Abstract: This invention relates to a method of operating a regenerative furnace to capture a greater portion of its waste heat. A substantially greater amount of air than that required for combustion is passed through the air intake side of the regenerative furnace. The non-combustion clean hot air is taken from the furnace and conducted to an auxiliary heat-utilizing apparatus mounted exteriorly of the furnace.

Abstract: To improve the overall efficiency of heat recuperation in a burner installation, an additional or auxiliary heat exchanger (25) is positioned adjacent the burner (4) immediately behind a heat exchanger recuperator (12) for combustion air, the additional heat exchanger having a heat carrier medium, such as water, pressurized water, heat transfer oil, or the like, circulated therethrough for recuperation of additional heat from the exhaust gases and utilization, for example for space heating, hot water supply, or the like, in a further heat exchanger (28). The heat transfer efficiency of the burner system can thereby be improved to provide for a burner operating at for example 1000.degree. C., of final exhaust gas temperatures in the order of 200.degree. C. which, without the additional or auxiliary heat exchanger, would be exhausted at about 500.degree. C.

Abstract: An industrial process oven is provided with a false outer skin spaced from the oven wall. A plurality of air currents are induced and estalished in a like plurality of air passages provided between the oven wall and the outer skin. As ambient air passes over the oven wall it is preheated. The preheated air from the plurality of air passages is collected in a transfer duct and conveyed to an oven heater where its temperature is further raised to a desired operating temperature.

Abstract: An improved furnace design for carrying out the catalytic steam reforming of hydrocarbons, including an air delivery and burner system which extends across the top of the furnace. The air delivery system includes a plurality of air ducts each forming a plenum arch, with the arches being suspended between their respective ends as they span the top of the furnace. Burners, for providing heat to the radiant section of the furnace, are spaced within each of such arches and extend into the furnace. Further, the plenum arches provide a supporing structure for the insulation forming the top the radiant section of the furnace.

Abstract: An inshot, atmospheric burner assembly is provided for hot air furnaces including a frame supporting a venturi assembly, an adjustable secondary air shutter and a circular target or flame spreader. The flame spreader is positioned adjacent the outlet of the venturi assembly. An orifice holder extends through the base of the frame and adjustably carries a primary air shutter.

Abstract: A hot gas generator for the production of hot combustion gases includes a cylindrical combustion chamber having an inner and an outer air conduit concentrically disposed thereabout. A fuel nozzle means is arranged at one longitudinal end of the cylindrical combustion chamber and an exhaust port is arranged at the other longitudinal end thereof. A baffle plate is disposed on the longitudinal end of the cylindrical combustion chamber on which the fuel nozzle means is arranged. Combustion air from a blower or the like flows through the outer air conduit into the inner conduit where it is heated by the cylindrical combustion chamber and then passes through openings in the baffle plate into the cylindrical combustion chamber.