Abstract: This invention relates to an intake air heating device in an internal combustion engine. The intake air heating device comprises means for guiding flames from a flame holding or baffle cylinder to an intake pipe, the aforesaid means being attached to one end of the flame baffle cylinder integrally secured to the body proper of the intake air heating device and projecting into the interior of an elbow portion of the intake pipe, or secured to the inner wall of the elbow portion of the intake pipe which faces said one end of the flame baffle cylinder, so that the intake air heating device may fulfill the intake-air heating function when mounted on the elbow portion of the intake pipe connecting an air cleaner with an engine.

Abstract: A burner for heating an airstream is disposed in the airstream and has four identical walls which are secured together along their sides to form a tapered combustion chamber, the small end of which is located upstream. An axially extending gas pipe opens into the small upstream end of the combustion chamber and through this pipe a combustible gas enters the combustion chamber. Combustion air from the airstream enters the tapered chamber through apertures in the walls and the mixture so formed is ignited, resulting in a self-sustaining flame. A flame probe, which extends through the axial supply pipe and into the combustion chamber for a substantial distance, senses the flame regardless of whether it is high or low. The combustion chamber walls bulge inwardly intermediate there sides to insure that the combustion air reaches the center of the combustion chamber and mixes thoroughly with the combustible gas. A shroud surrounds the combustion chamber walls and has a metering inlet which opens upstream.

Abstract: A direct contact water heating system and process are disclosed which provide for the direct contact of hot flue gases with water-to-be-heated without the hot flue gases being washed or quenched prior to their contact with the water in such a manner that maximum thermodynamic efficiency is achieved while delivering water heated to the equilibrium temperature corresponding to the vessel pressure and free of dissolved gases, and requiring, under most conditions, no make-up water. A variation will produce water at a higher temperature. The system discharges scrubbed environmentally-acceptable flue gas to the atmosphere with essentially zero chemical, particulate or thermal pollution.

Abstract: Leaf tobacco or the like in a substantially airtight enclosure is cured and dried by circulating through the enclosure air that is controllably heated by a forced air fuel burner located in an elongated vertically oriented duct outside the enclosure. The outlet end of the duct is communicated with the enclosure at the bottom thereof, and its upper inlet end is controllably communicable with the enclosure at the top thereof and with the ambient atmosphere. The air intake port of the fuel burner receives only air flowing through the duct. Air circulation is effected by an electric motor driven fan near the inlet of the duct, and a restriction in the duct produces a pressure drop across the burner that prevents back-drafts through it.

Abstract: A high velocity gaseous fuel burner has a casing with an inlet end into which air is blown to an outlet end in the form of a nozzle. Within the casing but circumferentially spaced therefrom is an elongated combustion tube into the rear end of which a main burner unit projects a fuel/air mixture. The outlet end of the tube reaches to or into the nozzle and the air blown through the casing passes over the combustion tube, some air passing into the tube through apertures in its wall. A boost burner unit may be mounted through the walls of the casing and tube to project a fuel/air mixture axially towards the casing nozzle to produce further combustion beyond the tube outlet. Valves are provided for controlling the flow of fuel and air to the two burner units jointly and/or separately.

Abstract: A forced air heater using self-pressurizing fuels such as propane or butane to drive the blower incorporates an overheat dump port to provide an auxiliary exit for the hot air in the event that the normal outlet becomes obstructed. Also included are means for removing condensation from the fuel conduit, for preheating the fuel source, and for continuing to warm the fuel source and fuel conduit to improve operation of the forced air heater in cold environments. The overheat dump port also provides access into the heater for the high voltage conduit of a spark generator for igniting the fuel within the need for insulating the high voltage conduit.

Abstract: A wall burner is described for firing a flame laterally into a duct of the type generally known as a waste heat recovery duct wherein hot exhaust gases are passed in a heat exchange relationship with a second fluid downstream from the wall burner. The wall burner may be used as an igniter for a grid burner system disposed within the duct or the wall burner may itself be used to reheat the hot exhaust gases. The wall burner includes a combustion chamber pipe and ignition means located outside the duct so that ignition occurs outside the duct thereby obviating instabilities inherent in trying to ignite a combustible mixture within the hot exhaust gas path.

Abstract: A duct burner primarily for use in raising the temperature of turbine exhaust gas (TEG) to a usable temperature to operate a steam generator or the like. The burner comprises an array of downstream facing burners capable of burning low grade fuel oil in a low oxygen environment, each burner being provided with gas burning backup and individual flame scan capabilities.

Abstract: A burner for the direct heating of a fluid by the combustion of an assisted spray liquid and a gaseous substance. Above a grating are arranged spray nozzles for the spraying liquid and injectors for the gas. The said spray nozzles and injectors have independent and respective feed systems. They are arranged in space so as to enable the flowing of the fluid to be heated up, in such a way that the combustion produces a distributed giving off of heat insuring the homogenous heating up thereof in combination with convection means contributing to the stirring thereof. The burner is applicable, to steam generators, to the heating of premises and to the depollution of polluted smoke.

Abstract: A noiseless premix burner comprising a cylindrical housing which is attached to the outer covering of the furnace wall, and closed at its opposite end by a closure plate which supports a concentric burner tube which extends from the closure plate through an opening in the furnace wall to the interior of the furnace. A gas fuel line is inserted along the axis of the burner tube. Pressurized fuel gas flows through an orifice in the fuel line in an expanding flow. The proximal end of the burner tube has a venturi type throat construction. The annular space between the burner tube and the cylindrical housing comprises two plenums, one adjacent the outer wall of the furnace supplying secondary air, which passes into the furnace through a narrow annular gap between the burner tube and the furnace lining.

Abstract: A method and an apparatus for the combustion of liquid sulphur in a combustion chamber. The injection device for the liquid sulphur and the primary air comprises a double spraying arrangement : a simple mechanical spraying device in which the liquid sulphur is driven through a spray nozzle without the aid of an auxiliary driving fluid and a pneumatic spraying device in which a turbulent rotational primary air stream mixes with the relatively coarse spray produced by the spray nozzle through a constriction zone and into the combustion chamber, transforming the relatively coarse spray into a relatively fine spray. The fine spray enters the combustion chamber at the apex of a conical end wall of the combustion chamber and is driven into contact with the conical end wall due to the whirling action of the primary air. Secondary air is introduced along the lateral walls of the combustion chamber, in order to protect these walls of refractory material from the radiation heat produced during combustion.

Abstract: In a combined cycle power plant, gas turbine exhaust gas is passed through a heat recovery steam generator (HRSG) wherein it may be reheated upstream from a boiler tube section prior to passing through the boiler tube section in a non-contact heat exchange relation with a feedwater supply to produce steam for driving a steam turbine. A plurality of air-atomized, liquid fuel wall burners are utilized, each in combination with a "vee"-shaped flameholder to heat the gas turbine exhaust gas. Each wall burner may be disposed in a recessed opening in the HRSG duct wall and each wall burner has a nozzle portion which may be directed upstream relative to the exhaust gas flow. Each flameholder is approximately parallel to its respective wall burner nozzle axis having one end fixed to the duct wall, upstream from the nozzle axis, and a free end disposed within the HRSG duct.

Abstract: A grain dryer is disclosed in which a blower forces air past a burner and then through a duct into a bin made of oppositely curved columns of grain defining between them and an end wall a plenum chamber for drying the grain in the bin. The invention resides in the use of a plurality of spaced baffles of particular configuration designed to take a stream of air of non-uniform pressure and temperature over a cross section of the stream, and transforming said stream into a stream in the plenum chamber of substantially uniform pressure and temperature over any cross section thereof, said stream, if desired, having a predetermined temperature gradient lengthwise of the bin which compensates for a lengthwise dryness gradient in the grain in the bin.

Abstract: A device for preheating gases of waste lines, particularly for the catalytic purification of exhaust gases comprises a conduit for the passage of the waste gases which is provided with a widened portion defining an annular flow passage around a portion of the conduit for preheated gases with a through flow for the heated gases and the waste gases out the opposite end of the conduit. The preheated gases are generated in a tubular burner which is tangentially connected into the waste gas conduit at the location of the widened section thereof. The burner includes means for feeding air and fuel into the end of the tubular burner and igniting them in a combustion chamber thereof for flow into a partially annular space around a portion of the waste gas conduit through an intermediate convergent section into the flow path of the gases through the conduit.