Abstract: A regenerative bed incinerator 10 is provided with a gas recirculation duct 80 through which a controlled amount of incinerated process exhaust gases 7 are recirculated to the regenerative bed incinerator 10 to again pass through the combustion zone within the bed 14 housed therein so as to improve overall hydrocarbon destruction efficiency without exceeding permissible temperature limits.

Abstract: A device for oxidizing gaseous materials, comprising a combustion chamber, wherein the device and the combustion chamber both have a top and a bottom, the device further having a gas outlet and being adapted to operate in conjunction with means applying negative pressure to the outlet, means for introducing process gas and a source of fuel into the top of the combustion chamber, means for effecting heat exchange between oxygen-containing gas and the combustion chamber to preheat the oxygen-containing gas, means for introducing the preheated gas into the top of the combustion chamber, means for mixing the preheated gas with the process gas and fuel so that the mixture can burn in the combustion chamber to form an exhaust gas, means for permitting the gas to exit from the bottom of the combustion chamber, means for diluting the exhaust with air to form a flue gas, and means for directing the flue gas from the bottom of the combustion chamber out of the outlet of the device.

Abstract: A compact regenerative incinerator for incinerating an effluent includes a single vessel with two compartments separated by a partition. Each compartment includes an opening and a combustion chamber, and these are separated by a thermal storage medium. The incinerator also has a bypass system, which includes a bypass opening in the vessel and a bypass thermal storage medium separating the opening from the combustion chambers. Valving, which includes one or more flushed control valves, directs the effluent to flow into one of the compartment openings and directs the products of incineration to flow out of the other. The valving is also adapted to direct the effluent into the bypass opening while reversing the flow direction in the incinerator.

Abstract: A steam boiler (2) including a fire tube (21) and convection heating surfaces (22) is preceded by a combustion chamber (30) including a surface burner (34) for high excess air. The combustion chamber (30) and the fire tube (21) are internally thermally insulated (33). The combustion air supply opening (37) of the burner (34) is connected by way of a blower (40) with an exhaust air source (1). A fuel control valve (36) is controlled as a function of the boiler load. A plurality of heat exchangers (47, 48, 49) are incorporated in the flue gas channel (45) following the convection heating surfaces (22). The most upstream heat exchanger (47) is connected on the water inlet side by way of a pump (51) to the water chamber (23) and on the water outlet side by way of a baffle (53) to the water-steam circuit of the boiler (2). With this system it is possible to purify all of the exhaust air from the exhaust air source (1) over a broad boiler (2) load range.

Abstract: An igniter assembly for igniting waste gas discharged from a stack mounts to the upper end of the stack. The igniter assembly has a nozzle with a cap on its upper end that extends radially outward from the nozzle. The nozzle is mounted parallel to the axis of the stack, with the cap being perpendicular. Ports extend downward and outward through the nozzle for discharging flame jets downward and outward. The cap overhangs the inner diameter of the stack a slight distance. The sparking device locates within an inner member and is supplied with a small bypass flow of gas. The sparking device ignites a flame within the nozzle, which in turn ignites the main flow of gas flowing through the housing of the igniter assembly.

Abstract: Combustion apparatus comprises a combustion chamber for effecting primary combustion of combustible material charged thereinto, an exhaust conduit for exhaust gases emitted by the primary combustion, primary air inlet means for directing primary air into said combustion chamber, and secondary air inlet means for directing secondary air into the exhaust conduit at least in the region adjacent the combustion chamber so as to promote further combustion of said exhaust gases, said secondary air inlet means including an air distributor arranged centrally of the conduit characterized in that secondary air inlets are additional provided in the wall of the conduit over at least part of the extent of the air distributor.

Abstract: A grateless regenerative incinerator includes a gas distribution assembly having a plurality of tubes supported adjacent the floor of a heat exchanger. A coarse heat exchange material covers the tubes, and a fine heat exchange material covers the coarse material, filling the remainder of the heat exchange chamber. Gases enter and leave the heat exchange chamber through the tubes.

Abstract: A flueless combustion system which accepts materials nominally designed as trash and waste, including the solid and gaseous combustion products of the system itself, and converts these materials and combustion products to marketable products. Pyrolytic conversion is employed to reform these materials and combustion products. The gaseous combustion products of this system are exhausted to an underwater distribution system which permits the gaseous combustion products to percolate through water which contains cellulosic materials to further absorb and entrap gases. The water, cellulosic materials, as well as sediments resulting from the cooling of the exhaust gases, are utilized within the pyrolytic process. The gases, steam, and heat resulting from the pyrolytic process are used in conversion processes such as the Fisher-Tropsche Process to provide marketable products. For example, the Fisher-Tropsche Process produces liquid fuels.

Abstract: Method and apparatus are provided whereby a hydrocarbon gas and liquid mixture is separated into a first fluid and a second fluid. The first fluid is vaporized to form a vapor which is commingled with the second fluid. The commingled fluid is passed through a superheating exchange means wherein the commingled fluid is superheated prior to passing to a flare for combustion.

Abstract: In a process for reducing the nitric oxide emission during the combustion of solid fuels, the flue gases leaving from a main combustion zone (2) consecutively flow through two reduction zones (6,9). The first reduction zone (6) is operated hypostoichiometrically at temperatures above 1,000.degree. C. and while adding a reducing fuel, while the second reduction zone (9) is operated hyperstoichiometrically at temperatures from 950.degree. C. to 1,000.degree. C. and in the presence of nitric oxide-reducing substances.

Abstract: A line burner assembly is provided for burning a mixture including at least a gaseous fuel and process air to produce a flame. The assembly includes a mixing region which contains an air/fuel mixture. Gaseous fuel and process air are supplied to the mixing region. Combustion air containing oxygen may also be supplied manually or automatically to the mixing region to compensate for a decline in the oxygen level in the process air below a predetermined minimum level to enhance the combustibility of the air/fuel mixture in the mixing region.

Abstract: A process for controlling the temperature and flame front in a liquid waste incinerator comprising: dispersing fluid wastes into the flame of at least one oxygen/fuel burner to incinerate the waste in and around the flame, wherein flame energy is regulated by adjusting the fuel to the low heating value waste ratio to control the flame front and temperature in said incinerator. The flue gas resulting from burning the waste may be used to heat, possibly concentrate partially and/or evaporate (if liquid is present) the fluid waste prior to dispersing it into the flame.

Abstract: A method and apparatus for the combustion treatment of a toxic gas which forms microparticles by combustion are disclosed wherein the toxic gas is subjected to a combustion treatment in a specific combustion furnace where the combustion gas formed is brought into contact with an aqueous film flowing downwards on the inner wall of the furnace from the upper end portion thereof to the lower end portion thereof or with a cooled surface, and then optionally with aqueous droplets dispersed in the interior space of the furnace. The water captures the microparticles formed by combustion of the toxic gas and is discharged out of the furnace as a mixed flow with the combustion gas thus treated, and optionally the mixed flow is successively treated in a gas-liquid separator.

Abstract: A process and apparatus for the combustion in an incineration device of noxious noncondensable gases produced in a pulp mill comprising the use of a novel injection nozzle, said nozzle comprising a tubular conduit means, an insulating inner jacket surrounding said conduit means, and an outer cooling jacket surrounding said inner jacket. Increased nozzle life is obtained.

Abstract: There is disclosed an apparatus for burning a waste gaseous stream having a residual heating value represented by a heat of combustion of from 50 to 900 BTU/SCF. to heat an intermediate heat transfer fluid, and to use the thus heated heat transfer fluid to heat diverse fluids in a plurality of serially arrayed heat exchangers at descending temperature levels.

Abstract: A method of cleaning flow structure within a regenerative fume incinerator of the type having a plurality of heat exchange chambers for directing fluid into and out of a combustion chamber. Each of the heat exchange chambers have a separate inlet and outlet line which are cyclically opened such that air to be cleaned is continuously being directed into the combustion chamber through one of the chambers, and cleaned air is continuously directed out of the combustion chamber through an alternative one of the chambers. The flow structure, valves and manifolds may become clogged with residue from the air being combusted. An alternate inlet line communicates from the source of fluid directly into the combustion chamber. That line is opened when cleaning of the flow structure is desired. At the same time flow to the normal inlet manifold is closed.

Abstract: Cold carbon-containing blanks which are impregnated with a carbon-containing material are introduced into a cold autoclave which is thereupon sealed and filled with inert gas prior to heating of the interior of the autoclave to tempering temperature. The tempered products are cooled in and thereupon removed from the autoclave, and the inert gas is relieved of hydrocarbons and other harmful substances which are released by the impregnating material during tempering.

Abstract: A combustion method wherein separate oxidant mixing zones and fuel reaction zones are established in a combustion zone to dilute oxidant and combust fuel under conditions which dampen NO.sub.x formation.

Abstract: A method and apparatus for the more complete incineration of dangerous waste gases to produce by-products which are safer for eventual release into the atmosphere. The invention involves mixing the waste gases with a flammable co-incineration fuel at an upstream location which is devoid of a combustion-supporting atmosphere, moving the mixture downstream to an ignitor fuel flame, and introducing a source of oxygen immediately downstream of the flame to support the combustion of the flame. The flame ignites the co-incineration fuel which, together with the flame, co-incinerates the waste gases in an area between the upstream area at which the waste and fuel gases are mixed and the downstream area at which the source of oxygen is admitted. The invention also preferably includes centering the co-incineration reaction for "cold wall" operation, mixing the by-products with air for cooling purposes.

Abstract: A spray burn floating combustible material burner apparatus is disclosed herein used to remove a floating layer of combustible material, such as oil, from a body of water. The apparatus includes a support frame attached to a buoyancy system, an air nozzle, an air nozzle adjustment means, drop-catching means, a deflection plate, a stabilization plate, and an ignition source. The air nozzle is attached to the air nozzle adjustment means, which adjusts the vertical position of the air nozzle with respect to the surface of the floating layer, and to an adjustible supply of compressed air which, during operation, vertically lifts and atomized the floating layer into droplets in the apparatus' combustion region. The ignition source located in the combustion region destroys the atomized droplets by combustion. The drop-catching means is positioned above the combustible material and prevents any ignited droplets from falling into the surrounding layer of combustible material.

Abstract: There is disclosed an apparatus for burning a waste gaseous stream having a residual heating value represented by a heat of combustion of from 50 to 900 BTU/SCF. to heat an intermediate heat transfer fluid, and to use the thus heated heat transfer fluid to heat diverse fluids in a plurality of serially arrayed heat exchangers at descending temperature levels.

Abstract: A regenerative bed incinerator 10 incorporates a dwell chamber 18 disposed between a pair of spaced regenerative heat exchange the beds 14A and 14B, one of which serves as a gas preheating bed and the other of which serves as a gas cooling bed. At periodic intervals, the direction of flow through the incinerator 10 is reversed so that the functions of the beds 14A and 14B is reversed. A hot gas vent duct 80 is provided for selectively bypassing a portion 7 of the hot, incinerated process exhaust gases 5 around the gas cooling bed into the gas exhaust duct 70 for venting to the atmosphere. A bypass damper 88, which is controlled by control means 86 in responsive to exit gas temperature measurements from thermocouple 90, is positioned in the hot gas vent duct 80 to control the amount of hot, incinerated process exhaust gases bypass around the gas cooling bed.

Abstract: A method of destroying NO.sub.x and SO.sub.2 in a combustion gas in disclosed. The method includes generating active species by treating stable moleucles in a high temperature plasma. Ammonia, methane, steam, hydrogen, nitrogen or a combination of these gases can be selected as the stable molecules. The gases are subjected to plasma conditions sufficient to create free radicals, ions or excited atoms such as N, NH, NH.sub.2, OH.sup.-, CH and/or CH.sub.2. These active species are injected into a combustion gas at a location of sufficiently high temperature to maintain the species in active state and permit them to react with NO.sub.x and SO.sub.2. Typically the injection is made into the immediate post-combustion gases at temperatures of 475.degree.-950.degree. C.

Abstract: A regenerative incinerator comprises a combustion chamber, a regenerator having a plurality of discrete segments each of which has a heat exchange material therein and a valve for sequentially directing contaminated gas, purge air and cleansed gas to and from discrete segments of said regenerator, selectively.

Abstract: The invention relates to a high performance burner whose performance can be controlled in a stepless manner. To this end, a premixing chamber is upstream of a burner nozzle that extends into a combustion chamber. Fuel is supplied in controllable amounts to the premixing chamber, and a mixture, in the form of an emulsion, is prepared therefrom by means of air supplied from an auxiliary air line. The air-fuel mixture thus prepared is passed to the burner nozzle which diffuses it in the combustion chamber. A high performance burner in accordance with the invention is designed for use as a heating device of high performance, like an independent heating device but, advantageously, can be employed as an exhaust gas afterburner, whereby the high performance burner is disposed in an exhaust gas line of a combustion engine, or a branch line thereto.

Abstract: A combustion method enabling reduced NO.sub.x formation wherein fuel and oxidant are separately injected into a combustion zone in a defined velocity relation, combustion gases are aspirated into the oxidant stream prior to intermixture with the fuel, and the fuel is maintained free from contact with oxygen until the intermixture.

Abstract: A combustion apparatus and method are provided which can achieve highly effective and complete combustion of combustible gases therein. In accordance with the invention, a stream of oxidant gas is directed along and in contact with the exterior surface of a hollow member having inlets communicating with the interior thereof. The oxidant gas is then directed through the inlets into the interior of the hollow member. Oxidant gas swirl vanes are provided within the hollow member to impart swirling motion to the oxidant gas. A nozzle extends into the hollow member and also contains swirl vanes which impart a swirling motion to at least one combustible gas which is passed through the nozzle. Swirling combustible gas exiting the nozzle outlet mixes with the swirling stream of oxidant gas to produce a combustible mixture. The combustible gas in such mixture is combusted and combustion products are discharged through an outlet of the hollow member.

Abstract: An optimized thermal/catalytic combuster for the efficient oxidation of volatile organic compounds (VOC) in air. As an example, the invention is directly applicable to remedial action for clean-up of ground sites contaminated by spills or leaks of gasoline, organic paint solvents and the like, by a process known as air extraction. A thermal combuster and a catalytic oxidizer are interconnected by piping and control valves so that when one such element operates, the other is quiescent, depending on the concentration of combustible vapors in the extracted air. A dilution air valve, a heat exchanger, an electric heater, or a connection to a supplemental supply of clean-burning fuel, or all these devices, may be provided to ensure efficient operation. In an alternative embodiment, an internal combustion engine may be used in place of the thermal combuster. The engine can be used to supply power for other uses within the system or for external use.

Abstract: Apparatus for carrying out a postcombustion process includes a combustion chamber (2) and a post-combustion chamber (4) provided within the vicinity of the outlet of the combustion chamber (2). A conduit (8) is fluidically connected to the post-combustion chamber (4) so as to inject fresh combustion air thereinto. A heating device (9) is disposed within the conduit (8) for pre-heating the fresh combustion air to be injected into the post-combustion chamber (4). Various sensors (11,12,14) are provided within the combustion chamber (2), post-combustion chamber (4), and conduit (8), and an electronic control circuit (13) is operatively connected to the sensors (11,12,14) as well as to the heating device (9) so as to control the heating device (9) in response to detected sensed signals from the sensors (11,12,14).

Abstract: It has been found that trace concentrations of organic materials, including toxic organic compounds, oxidize slowly. Safe and reliable incineration of toxic organic compounds at low concentration is provided by injecting a clean fuel such as H.sub.2, CH.sub.4, or CO into the incinerator combustion chamber to promote rapid oxidation of the toxic organic compounds. It is believed that the clean fuel added to the combustion effluents raises the total concentration of fuel and organic materials above the second oxidation threshold so that the toxic organic compounds are rapidly destroyed.

Abstract: A method and flare burner apparatus for flaring inert vitiated waste gases in an efficient stable manner are provided. The apparatus is comprised of a first tubular member for discharging waste gases having an inlet end and a discharge end and a second tubular member positioned around at least the discharge end portion of the first tubular member whereby a discharge space is provided between the first and second tubular members around and adjacent the discharge end of the first tubular member. Burner means are disposed within the discharge space for discharging and igniting fuel gas therein and fuel gas conduit means are sealingly connected to the burner means for connecting the burner means to a source of fuel gas. Air conduit means are sealingly connected to the discharge space for connecting such space to a source of combustion air.

Abstract: A flame arresting method, conduit section and apparatus for the safe disposal of combustible waste gases from a source such as a reactor. The invention involves providing a waste gas conduit section with a flame-detecting chamber and one or more upstream snuffing chambers divided by flame arresting grid members, and automatically introducing snuffing gases to the snuffing chamber(s) whenever a flame is detected in the flame-detecting chamber. The outlet from the waste gas conduit section opens to a combustion chamber, for incineration purposes, or to a scrubber.

Abstract: A liquid seal valve arrangement is disclosed wherein two liquid seal tanks act in response to a differential pressure to divert a portion of waste gas being directed to a heavily loaded flare to an alternate lightly loaded flare.

Abstract: A regenerative burner system comprises two burners alternately fired and each having an air and fuel supply thereto traversing separate heat exchangers. The arrangement is such that the hot gases exhausted from the furnace during firing of the one and the other burners traverse the heat exchangers associated with the other and the one burners, respectively, relinquishing heat thereto whereby both the fuel and the air supply to each burner extracts heat from its associated heat exchanger during the firing cycle of that burner. By heating both the fuel and the air input to the regenerative system, fuels of low calorific value, e.g. blast furnace gas or any gases low in or devoid of hydrocarbons may be efficiently utilized to provide a stable high temperature flame without the need for enrichment with `pilot` fuels.

Abstract: A process for producing cement clinker, having a preheating-, calcination and cooling zone, under addition of a secondary fuel, (retardedly)combustible components such as waste materials and/or conventional fuels being added in the zone between kiln inlet and calcination zone and then being subjected to an incomplete combustion and/or pyrolysis under addition of exhaust gases from the burning process.The gases thus formed are introduced into the calcination zone as secondary combustion gas together with the exhaust gas from the burning process and are burned there with tertiary air and optionally with conventional secondary fuel.The plant required for performing the process consists of a system of heat exchangers (2), a calcining kiln (3a), a burnin kiln (10) and a clinker cooler (13).The calcining kiln (3a) is provided with a means (4) for introducing tertiary air and/or oxygen preferably preheated (m) in the clinker cooler (13) and optionally with a means (15) for introducing a conventional fuel.

Abstract: An igniter for igniting waste gas discharged from a gas discharge pipe has a flame detection circuit. The igniter has an electrode and a gas conduit which supplies a source of fuel to the nozzle for creating a flame to discharge across the gas discharge pipe. A continuous DC voltage is supplied to the electrode, with any current flow between the electrode and the housing indicating the presence of a flame. Passages are provided near the electrode for circulating hot gas to reduce moisture, which could provide false readings. The internal components are mounted on a frame, which is secured in place by a locking device located at the bottom of the housing. The nozzle has a plurality of slots for the discharge of flame with the slots located at the lower end of the nozzle being of larger surface area than at the other end of the nozzle. Auxiliary lines extend through the housing for discharging low volume waste gas and flame extinguishing fluid, if desired.

Abstract: A method and apparatus for flaring a gas stream such as the gas mixtures formed in landfills while retarding the backward propagation of flame thereto are provided. The method comprises conducting the gas stream to a burner structure having a plurality of flow passages therein configured such that the gas stream can flow through the passages, but the backward propagation of flame therethrough is retarded; flowing the gas stream through the flow passages of the burner whereby the gas stream is jetted therefrom and initially mixed with air; igniting the gas stream; and mixing the ignited gas stream with additional air by confining the jetted and ignited gas mixture within a stack configured to allow the admission of air around the burner structure and to discharge products of combustion into the atmosphere.

Abstract: The exhaust air from the tenterframe (1) conveyed by a fan (7) is fed as combustion air to the burner (13) of a steam boiler (21). The burner (13) is operated with a variable and high excess of air of .lambda.=1,5 to .lambda.=3,5. The boiler output is regulated by the fuel supply. The excess of air is increased at low boiler load. The boiler exhaust gas is cooled down below the dew point via three heat exchangers (29,30,31). Thus complete combustion of the organic noxious substances in the tenterframe exhaust air and at the same time recovery, which can be readily utilized, of the tenterframe waste heat and a lowering of the fuel requirement of the steam boiler are achieved. The same method is also suitable for purifying the exhaust air from singers.

Abstract: A process and apparatus for treating waste products coming from the manufacture of electronic components. The effluent gases are aspirated by an inert vehicle gas, then intimately mixed with a preheated oxidizing gas, then remain in contact therewith at a sufficient temperature and for a sufficient period of time for the incineration, then the products of oxidation are cooled by thermal exchange to condensation, and the solid products of oxidation are collected and the residual gases washed, and there is realized a cascade of pressure drops along the gaseous current.

Abstract: The invention relates to an afterburner apparatus and an incineration system and methods of waste destruction in primary incineration combustion means and afterburner means which both preferably utilize at least two different oxidizing gases. By varying the ratio of said oxidizing gases, the amount of total oxygen and nitrogen delivered in either means can be dynamically adjusted in accordance with the process requirements. Varying the flows of at least two oxydizing gases and auxiliary fuel in both the primary incinerator and afterburner makes it possible to operate the system under fluctuating waste loading conditions, by controlling temperature, partial pressure of oxygen and heat available for the process as a function of said ratio.

Abstract: In its simplest sense, the burner of the present invention includes a swirl chamber for creating a swirling flow path for primary combustion air. The burner also includes means communicating with the swirl chamber for introducing low heating value gas to the primary combustion air for discharge with the air into a flame zone. Also provided are means adjacent to each other for introducing secondary air and for introducing secondary low heating value gas positioned so that the secondary air and secondary low heating value gas intersect the flame zone, preferably above the region of the recirculating core of the flame and at such a point that the secondary air and low heating value gas have a minimal effect on the swirl aerodynamics of the flame.

Abstract: An appliance for the combustion of oxidizable substances in a carrier gas is described, in which the carrier gas is fed through heat exchanger tubes having inlet ends which are bent outwardly adjacent an outlet for gas from which oxidizable substances have been removed by combustion. Prior to entering the tubes the carrier gas passes an annular chamber in which it becomes pre-heated and condensates are evaporated.

Abstract: A method and apparatus for disposing of noxious landfill produced leachate and gases are provided. The method basically comprises the steps of combusting at least a portion of the landfill produced gases with air in a first combustion zone to produce a stream of hot combustion products, contacting the landfill produced leachate with the stream of hot combustion products to thereby vaporize a portion of the leachate and form a concentrated leachate residue and a composite gas stream, withdrawing the concentrated leachate residue, and then combusting the composite gas stream with additional air in a second combustion zone to convert noxious components remaining therein to non-polluting compounds.

Abstract: A process and system are set forth for improving an oxygen-enriched Claus process by introducing a sulfuric acid stream into the reaction furnace to moderate oxygen-induced high temperatures which allow oxygen-enrichment and attendant throughput in the Claus process to higher levels than heretobefore practiced.

Abstract: An improved smoke suppressant apparatus for flare gas combination comprising a flare housing and a liner cylinder member coaxially disposed therewithin, an annular orifice channel formed between the liner cylinder and the flare housing. A first flare conduit is in fluid communication with the orifice channel and a first flare gas portion passing through the flare conduit is discharged from the orifice channel at the upper end of the flare housing as a perimeter zone discharge configured as a relatively thin cylindrical layer of flare gas. A second flare conduit may be provided in fluid communication with the inner core of the liner cylinder to discharge a second flare gas portion therethrough as an inner zone discharge, and a liquid seal is provided to permit flare gas to pass via the second flare conduit only when the pressure of the inlet flare gas exceeds a predetermined value.

Abstract: A process and an apparatus for the thermal incineration of oxidizable substances in a process gas are proposed, whereby the process gas is conveyed through an afterburning apparatus 10 comprising, inter alia, a combustion chamber 18 and a process gas outlet 24 in order to remove purified exhaust gas from the process gas outlet 24, and to mix said purified gas in with the process gas in order to maintain a constant concentration of the process gas.

Abstract: A combustion apparatus is provided, preferably of the thermal heat regeneration type, in which noxious or other gases are passed to an incineration chamber, to be burned at a sufficiently high temperature that they are disposed of. An auxiliary burning unit is provided, for handling liquid substances, such as fuels, that may be hazardous liquid wastes, such as toxic liquid wastes and the like that are combustible. These liquid wastes may be burned in the auxiliary unit, by exposure to a sufficiently high temperature for a sufficiently long time that they are rendered substantially pure, and they may then enter as gases into the gas incineration apparatus. The liquid substances being burned in the auxiliary unit preferably are brought to a high temperature by passing through an elongate portion of the unit, and then traveling in a reverse flow direction, back over a common wall that has been preheated by liquid being burned in the unit, for efficient heat utilization.

Abstract: An incinerator for conserving volatile combustibles pulled from a layer of contaminated earth. The incinerator includes a burner and separate entry lines for the combustibles and the fuel with the combustible entry line terminating in the burner downstream of the fuel line. The heated combustibles therefore supply a portion of the heat to keep the burner operational. Safety features are also incorporated into the incinerator to shut off gas supply if safety conditions are violated.

Abstract: This invention relates to a regenerating, hazardous waste gas fume and odor incinerator. The incinerator comprises a combustion chamber (12) and at least three heat exchanger regenerator beds (26, 28, 30) through which the waste gases pass selectively for preheating on their way to the combustion chamber and the processed, heated gases are passed through for cooling before exhausted. All three regenerator beds are cycled from a cooling position in which they absorb heat from the previously processed gases to a second position where they preheat waste gases en route to the combustion chamber to an inactive position where they do not receive gases either from the waste supply or from the combustion chamber. The waste gases, after being preheated, are directed to the combustion chamber through a plenum chamber (14) in which is located a combustion burner (16). The preheated waste gases are directed through the flame of the burner into the combustion chamber for ignition and for combustion therein.

Abstract: A waste gas burner is provided with a flare stack for receiving waste or hazardous gas, a chamber for receiving said gas from said flare stack, said chamber having variable openings for the passage of air, apparatus for increasing the velocity of the gas in the chamber creating a vacuum whereby ambient air is drawn into the chamber and mixed with the gas, a flare tip on said chamber for the passage of mixed gas and air and an ignitor adjacent the flare tip for igniting the gas mixture of gas and air.