Abstract: In a vertical cylindrical casing (1) of the apparatus along the axis thereof a gas-supplying pipe (8) is disposed, the end face (11) of which is disposed above a gas-distributing grating (3) at the level of the height of a fluidized bed formed thereon and in which a tube (12) is arranged with a swirler (13) inserted thereinto, said tube forming an annular gap (14) with the pipe (8). On the gas-supplying pipe (8) and on the gas-distributing grating (3) truncated cones (15, 16) are arranged coaxially, the upper end face (17) of the external cone (16) being disposed below the end face (11) of the gas-supplying pipe (8). In the upper part of the casing (1) in front of the inlet to an axial gas-discharging pipe (7) a baffle cone (19) is mounted.

Abstract: A plural component external mix air-assisted/airless spray gun has an airless tip from which resin is emitted in a fan-shaped spray and an injector nozzle for directing an unatomized stream of catalyst into the resin adjacent to the airless tip. The catalyst injector nozzle is built into an ear of an air cap and the air cap is keyed to the airless tip to guarantee the positional relationship between the injector nozzle and the airless tip. Injecting a stream of unatomized catalyst into the resin stream immediately downstream from the airless tip provides thorough mixing of the catalyst into the resin, increased utilization of the catalyst and decreased emissions of catalyst fumes.

Abstract: A flame spray gun comprising a trigger-operated valve for selectively controlling the flow of conveying air to an eductor disposed in the powder flow nozzle, thereby providing the operator with substantially instantaneous control over the powder feed rate through the gun.

Abstract: A flame spray coating system includes a thermoplastic resin powder supply hopper, an eductor adapted to entrain powder in a stream of conveying air, a valve disposed between the powder hopper and eductor for controlling the flow of powder from the hopper into the eductor, a flame spray gun and conduits interconnected between the flame spray gun and pressurized air and combustion gas sources for delivering flows of propelling air, conveying air, powder entrained in conveying air, and a combustible gas to the flame spray gun, and an eductor control disposed on the flame spray gun for controlling operation of the valve disposed between the powder hopper and eductor. A solid circular coating pattern is created with a nozzle constructed for twirling the entrained powder and conveying air. Interchangeable combustion nozzles of different sizes allow the same spray gun to be used for different substrate conditions.

Abstract: An electrostatic liquid coatings application process and apparatus is provided in which supercritical fluids, such as supercritical carbon dioxide fluid, are used to reduce to application consistency viscous coatings compositions to allow for their application as liquid sprays. The coatings compositions are sprayed by passing the composition under pressure through an orifice into the environment of the substrate. The liquid spray is electrically charged by applying a high electrical voltage relative to the substrate and electric current.

Abstract: A liquid coatings application process and apparatus is provided in which supercritical fluids, such as supercritical carbon dioxide fluid, are used to reduce to application consistency viscous coatings compositions to allow for their application as liquid sprays. The coatings compositions are sprayed by passing the composition under pressure through an orifice into the environment of the substrate.

Abstract: A spray nozzle assembly particularly adapted for directing a finely atomized slurry of hydrated lime for removing sulfur dioxide from flue gases. The nozzle assembly includes a nozzle body having a first pre-atomizing and mixing chamber into which pressurized liquid and air flow streams are directed for breaking down and pre-atomizing the liquid, an orifice plate at the downstream end of the first pre-atomization and mixing chamber for restricting the fluid flow into a second chamber defined by the orifice plate and spray tip, and a spray tip having a plurality of circumferentially spaced discharge orifices through which atomized liquid particles in the second chamber discharge in a substantially conical cloud-like spray pattern of finely atomized particles.

Abstract: A method and apparatus for producing a water/abrasive mixture for cutting and cleaning objects and for the precise removal of material. In a mixing chamber, an abrasive is introduced into a jet of water that is under high pressure and passes through the mixing chamber from an inlet to an outlet thereof. The abrasive is conveyed directly and precisely into the water jet in the mixing chamber along the shortest path.

Abstract: A pneumatic spray gun (10) having a mixing assembly (14) including a resin valve (18) and a catalyst valve (20) formed by valve passages (44,46) formed in a valve rotor (36). A pneumatic trigger assembly (24) and slide assembly (28) control rotation of the valve rotor to open the resin valve momentarily before the catalyst valve. A distribution plate (174) distributes the catalyst within the resin before the mixture flows into a mixer (22).

Abstract: A snow making, multiple nozzle assembly is provided comprising a tubular casing having an upstream end wall and an outwardly bulging downstream wall containing a plurality of snow making, supersonic, air expansion and liquid atomizing nozzle orifices circumferentially spaced therearound with radially inwardly extending air grooves therebetween in the outer, bulging surface. A tube plate partitions the casing interior into an upstream water compartment and downstream air compartment, and for each snow making nozzle orifice contains a water jet nozzle for directing a water jet into a central portion of that snow making nozzle orifice. Pressurized water fed into the water compartment causes water jets in each of the snow making nozzle orifices while pressurized air fed to the air compartment causes a jacket of air to surround the water jets entering the snow making nozzle orifice. The water exits from the snow making nozzle orifices as fine droplets which form into snow.

Abstract: A snow gun in the form of a hollow body includes a radially outer cylindrical wall having a longitudinally adjustable central tube coaxially mounted within the hollow body which further includes a radially inner cylindrical wall, radially spaced from the radially outer cylindrical wall and from the central tube. The outer cylindrical wall terminates in a converging, diverging nozzle downstream of facing ends of the radially inner cylindrical wall and the central tube. The end of the radially inner cylindrical wall proximate to the expansion nozzle forms a conical portion which extends beyond the axial end of the central tube to form a second converging and diverging expansion nozzle for a water passage between the central tube of the radially inner cylindrical wall. Compressed air is fed to the interior of the central tube and between the radially outer and radially inner cylindrical walls.

Abstract: A device in washing and rinsing apparatuses for continuously creating a foam, and conveying this to a nozzle (30), which device incorporates an injector (12), the pressure side (14) of which being connectable to a driving medium, e.g. water under pressure, and the suction side of which being connectable to a liquid, foam-forming detergent. The spray nozzle (18) of the injector is designed with an elongated, cross-sectionally very small hole (19), adapted to press the driving medium as a very thin jet into the diffuser (16) of the injector. The diffusor (16) is slightly conical and on the inlet side is provided with a portion of bigger, preferably much bigger cross-sectional area than the hole (19) of the spray nozzle (18). The diffusor (16) is arranged to open into an expansion chamber (20), to which is connectable a pressurized gas, e.g. air, for transport of the foam created therein to the nozzle (30).

Abstract: A powder spray gun comrpises a tubular housing having ambient air flow passages located in the side wall thereof medially of the opposite ends. A pair of air flow amplifiers are mounted in the housing on opposite sides of the ambient air flow passages and are so oriented that compressed air supplied to the upstream one of these amplifiers, the so called suspension amplifier, is operable to draw ambient air into the outlet end of the suspension amplifier, and compressed air supplied to the downstream amplifier, the so called pattern amplifier, is operable to draw ambient air into the inlet end of the pattern amplifier. The amplifiers are secured within the housing by end caps which are sealingly secured onto the ends of the housing by bayonet pin and slot connectors.

Abstract: A burner apparatus having particular advantage for use with rotary kilns of the type used to process cement, lime, and the like, provides adjustable flame geometry and location within the combustion zone. Either gaseous or liquid fuels can be fired with highly selective heat flux as required for processing. Air and gaseous fuel injection means are controllable to vary the velocity of injection and thereby alter flame geometry. This is achieved by disposing an axially-adjustable control baffle in a crossectional area of changing transition section formed by coaxial members, between which an air supply conduit is formed. The control baffle is cylindrical and fits in and moves within the air supply conduit. The transition section has frustoconical surfaces opposite frustoconical surfaces on the control baffle so that different gaseous mass flow can be regulated around a central flame resulting in an adjustable flame geometry.

Abstract: A two-fluid nozzle for atomizing an aqueous slurry includes a core member which will provide an atomized, cone-shaped spray of slurry droplets and an annular manifold which will provide a circular pattern of injected steam around the atomized slurry. The core member extends below the steam injection orifices and the bottom of the core is extended in diameter to form a concave groove and a lower lip which will disrupt the flow of steam from the injection orifices. A nozzle cap surrounds the slurry atomization and steam injection orifices.

Abstract: A saw guide is provided with a mixture of air, oil and water to lubricate and cool the saw and guide. The lubricant mixture is developed by a liquids mixer constructed around an oxyacetylene cutting tip. Greatly reduced water consumption is observed resulting in a drier working environment and reducing the amount of clean-up required.

Abstract: An overflow and automatic start-up system adapted for use with hydrokinetic amplifiers is disclosed. More particularly, the present invention relates to an overflow check system adapted to provide unit suspension and restart solely by manipulation of a discharge valve at a remote user location.

Abstract: A gas turbine engine fuel injector comprises a main center body portion at the upstream end of which is located a steam injector. The steam injector is adapted to optionally direct steam into the air inlet of the main body portion so as to reduce the production of the oxides of nitrogen, and optionally increase engine power output.

Abstract: This invention relates to a process burner for feeding a carbonaceous slurry, an oxygen-containing gas, fuel gas, and optionally, temperature moderators contemporaneously and selectively into a pressurized partial oxidation zone. The process burner feature internal formation of a uniform dispersion of the carbonaceous slurry and the oxygen-containing gas and the high atomization of the carbonaceous slurry.

Abstract: A jet fitting for a hydrotherapeutic receptacle includes an internal chamber which functions as a mixing chamber as well as a suction chamber. More particularly, a primary stream of water is supplied to the mixing chamber in such a manner that a low pressure condition is created within the mixing chamber for the purpose of entraining a secondary stream of water which flows from the hydrotherapeutic receptacle to the mixing chamber. The combined streams exit the fitting together so as to increase its discharge flow rate.

Abstract: A slurry distributor (S) for distributing a low viscosity fluid into a viscous, hydraulic slurry comprises a main conduit (1) located on a first axis .alpha. for conducting a flowing, viscous, hydraulic slurry towards an orifice (3). The distributor (S) has an air injector (5) defined by a stem (7) located on a second axis .beta.. The air injector (5) is for introducing air into the slurry to disperse it from the orifice (3). A second injector (9) located on a third axis .gamma. and intersecting the main conduit (1) is used to introduce a low viscosity liquid, preferably an accelerator, into the flowing slurry such that the low viscosity liquid impinges on the air injector stem (7) before dispersion. The distributor is especially useful with fireproofing compositions since it provides effective distribution of a viscous, hydraulic, cementitious slurry with an acidic accelerator.

Abstract: In an open-atmosphere flame spray gun system for spraying molten particulate material and a method of spray application, an improved eductor mechanism and flame spray gun permits a greater quantity of particulate material to be delivered to the article to be coated. The particulate material entrained in a stream of pressurized conveying air, a stream of pressurized burn/propelling air and a stream of fuel gas are delivered through a plurality of passageways extending through the gun body to a combustion chamber for mixing and ignition. The streams are delivered in concentric annular relationship to the combustion chamber, with the stream of particulate material and conveying air and concentric annular stream of burn/propelling air being directed into the combustion chamber in an outwardly expanding conically-shaped axial cross-section for enhancing the diameter and length of the flame produced by the gun and permitting an increased quantity of particulate material to be melted and delivered for coating.

Abstract: A nozzle cover for a combustor of a combination fuel gas turbine engine is cast as a one-piece integral part requiring machining only for holes, sealing surfaces and threads. The nozzle cover cross section is generally a portion of an ellipsoid in order to maximize strength for a given amount of material. An interface between the nozzle cover and each of a plurality of combination fuel nozzles employs a single threaded opening accommodating two of a required three nozzles. The third nozzle in each combination fuel nozzle is accommodated in threads formed in a stepped wall in the nozzle cover.

Abstract: The atomic constituents of volatile organic compounds are determined by a burner design having improved stability and, consequently, increased detection sensitivity. An optical window is included at one end of a burner tube to stabilize a hydrogen-air flame to avoid blow out. Since air and combined air and helium are introduced immediately in front of the window and the flow rate of the gases and a sample are particularly oriented, burning is complete for increased detection sensitivity by an interconnected atomic absorption spectrophotometer.

Abstract: An improved burner nozzle and process for making a synthetic or fuel gas mixture containing hydrogen and carbon monoxide by the partial oxidation, in a free-flowing hollow reactor, of a slurry of solid carbonaceous fuel in a liquid carrier admixed with a gas containing free oxygen. The nozzle may also be used in other applications where nozzles are required to handle slurries having a high concentration of finely-divided solids that must be uniformly admixed with a gas, as for example, in the aeration or incineration processes of a waste disposal plant. The nozzle and process include enveloping of an annular slurry stream between a central layer and an annular layer of high velocity gas, impinging the annular slurry stream on a downstream nozzle diffuser where a zone of high shear forces produce a uniform atomized admixture of solids, liquids and gases, and then transporting the admixture through an exit orifice at an accelerated velocity to further atomize the admixture.

Abstract: A fiberglass spray nozzle arrangement is described for controlling the spray flow configuration of a resin-catalyst mixture which is atomized exteriorly of the nozzle. Resin nozzle, catalyst nozzle and control air nozzle devices are included in spaced apart relation in this nozzle arrangement. The resin nozzle sprays resin in a spray stream which is intersected by control air jets from the flow control nozzle and catalyst spray from the catalyst nozzle in series. The resulting spray mixture forms a continuous flat fan having no splits or tails at the work.

Abstract: The apparatus for applying a sprayed concrete layer to a surface comprises a concrete feed pipe for a pumpable and sprayable concrete mixture made with water, a sprayer and a compressed air feed device for compressed air under a pressure of several bar from a compressed air source. The concrete feed pipe opens into the sprayer which has a compressed air connector device. The concrete mixture is sprayable with the compressed air. The compressed air feed device comprises a register including several compressed air chambers which connect to and open into the compressed air connector device. The individual compressed air chambers are connected with the help of control valves in alternating sequence to a power silo for loading a powdery concrete additive, particularly silica powder, or for blowing through a compressed air partial flow.

Abstract: The nozzle comprises an oxidizing outer heating ring and a carburizing inner heating ring surrounding the cutting jet. This nozzle is made in two parts respectively forming a unit (1) opf injectors and a cutting unit (2) in adjoining relation to each other in a transverse joint plane and in which are provided various passageways (4, 5). Grooves (7) are provided for putting the outer passageways (5) in communication with the inner passageways (4) so as to supply to the inner passageways (4) the required small quantity of oxygen for the inner heating ring from the oxy-fuel mixture supplied to the outer passageways (5).

Abstract: The invention is in a pneumatic powder ejector comprising a suction stage and an injection stage. The suction stage includes a suction chamber (16), a venturi (14) communicating a primary gas to the suction chamber and a lateral suction input (18) offset in relation to the downstream end of the venturi. The injection stage includes a nozzle (22), an injection chamber (36) and a diffuser (38). The stages are located within a coaxially of the body of a tubular ejector. The nozzle includes a path for powder and primary gas between the suction chamber and diffuser, and is formed to provide a flow path of reduced dimension to communicate a secondary or entrainment gas between the diffuser and injection station.

Abstract: An aspirating foamer having a water inlet path to admit water into the nozzle assembly, two diametrically opposed foaming material inlet paths perpendicular to the water inlet path, and a conical conduit wherein the pressurized water and foaming materials mix and are allowed to expand; and an air inlet valve at the exiting end of the conical conduit for admitting air; and an exiting path for the foam. In one foamer (2) the conical conduit has an outwardly tapered angle of approximately 5 degrees (from centerline) initially with an immediate increase to an outwardly tapered angle of about 7 degrees in the second half of the conical conduit. In another embodiment foamer (102) according to the invention the conical conduit has an initial taper of 21/2 degrees followed by a 15 degree diffusion angle and then a 7 degree angle.

Abstract: This invention relates to a nozzle for dispensing and aerating liquids. The nozzle provides for the formation of a substantially hollow conical vortex which aspirates air into the nozzle. The vortex is formed within a first chamber so that the base of the vortex impinges upon the chamber walls. This impingement results in the formation of a turbulent film which, when brought in contact with the aspirated air, results in aeration of the liquid forming the film. A foam-like characteristic is given the liquid by the entrapment of the air as the liquid is dispensed. The aspirated air enters through the downstream end of the nozzle but is directed both towards the front of the vortex and towards the rear of the vortex.

Abstract: In a method and an apparatus for pneumatically discharging hydromechanically conveyed hydraulic building material for underground operations, in which compressed air is supplied to the wet building material, pumped in a dense stream, in front of a mouth piece serving the discharge thereof and having in particular a nozzle shape, the compressed air being gunned out together with the building material, the invention provides for the dense stream of the pumped building material to be supplied to the compressed air supplied in a stream, sealed off from the outside air by the wet building material, and thereby be distributed in the compressed air stream and conveyed with the latter to the mouth piece to be discharged therefrom.

Abstract: A fluid feeding apparatus for feeding a fluid to a point beyond the apparatus, wherein a hollow member is provided having an interior surface which defines a chamber having a first fluid therein. The interior surface tapers toward the chamber axis from an open end of the member to an interior surface boundary axially opposite the open end of the member. A second fluid is injected into the chamber generally toward the opening formed at the open end.

Abstract: A process and apparatus for generating particulate containing fluid jets wherein at least one discontinuity generator is provided to create fluid instabilities, enhancing entrainment and acceleration of particulates in the fluid jet stream and providing uniform distribution of accelerated particles over a large surface area.

Abstract: A washing attachment for a compressed fluid spray gun is disclosed. The washing attachment includes a conduit, having a compressed fluid passageway positioned on the discharge end of the spray gun. An elongated member defining first, second and third passageways is in communication with the conduit with the second passageway in communication with the compressed fluid passageway. The first passageway is in communication with a source of cleaning fluid, a valve regulates the flow of cleaning fluid to the first passageway. The second passageway also communicates with the first passageway establishing a region of reduced pressure for drawing cleaning fluid into the first passageway. The first, second and third passageway terminate in discharge apertures adjacent the elongated member discharge opening. An opening in the elongated member communicates with the third passageway and is connected to a source of water.

Abstract: A spray assembly is disclosed which comprises a plurality of control valves disposed within a common housing each of which is independently actuatable whereby the flow of a plurality of fluids may be individually controlled for intermixing and delivery via a common outlet. The control valves utilized in the spray assembly of the present invention incorporate piston actuated plunger assemblies which are designed for extremely rapid operation whereby substantially maximum liquid fluid flow may be obtained almost instantaneously and rapid shut off may also be achieved.

Abstract: The walls surrounding the atomization chamber in a fluidized catalytic cracking unit where the cracking catalyst surrounds the atomization chamber are cooled by a flow of cooling fluid and baffles to cause the cooling fluid to flow in generally annular streams with crossflow between the annular streams being in a generally radially inwardly direction.

Abstract: Liquid fuel, particularly slurry-type fuel, such as coal-water, slurry or coal-oil slurries, is atomized by bringing the fuel into contact with gas under pressure in an atomizing nozzle (1). To this end, a continuous stream of fuel is passed through a channel (17) of circular cross-section. The stream of fuel is accelerated in the channel, adjacent the outlet end of the nozzle, and is preliminarily disintegrated by means of at least one first stream of gas under pressure directed inwardly against the outside of the fuel stream. The fuel is finally atomized by directing at least one second stream of gas under pressure outwardly against the inside of the accelerated and preliminarily disintegrated fuel stream, substantially immediately after said stream exits from the nozzle.

Abstract: A fiber insulation application nozzle having a small opening for introducing insulation into cavities through a small opening is provided. The diameter of the body portion of the nozzle corresponds with the diameter of the conventional deliver hose from an insulation blowing machine. The nozzle includes a reducing section tapering to an exit portion having a diameter one-third of the main body. A gas injector tube is introduced along the inside surface of the exit portion of the nozzle and is directed along the surface. Fiber insulation in the nozzle is compressed prior to entering the exit portion. The gas injected into the exit portion aids in moving the particles through the nozzle. The compressed fibers are surrounded by high pressure gas and are caused to expand into a fluffed condition upon leaving the nozzle. An impinging stream of liquid adhesive is provided within the exit portion of the nozzle so as to thoroughly wet and coat the insulation fibers within the nozzle as they exit the nozzle.

Abstract: A method is disclosed for making an optical fiber by drawing a preform whose fabrication involves deposition of a glass on a substrate by means of a chemical reaction between gaseous reagents. According to the disclosed method, accurately controlled amounts of a gaseous reagent are produced by flash evaporating a metered flow of a liquid reagent. The disclosed method is of particular interest for the industrial production of optical fibers.

Abstract: A continuously convergent nozzle structure for mixing water into an air stream so that small streams of water entering the nozzle adjacent its exit end are broken up into particles and projected outwardly in a fan-shaped pattern to form snow on a ski slope.

Abstract: Apparatus in which water and liquid detergent meet in a venturi chamber to be commingled there, the detergent being drawn into the venturi by the condition of unbalanced (lowered) pressure there resulting from the velocity of the water flowing through the venturi throat. Compressed air is introduced into a nozzle in communication with the venturi, and the commingled water, detergent, and air are then discharged for use in the form of a foam. The water inlet includes a removable insert separate from the venturi, the upstream end of the insert being exposed for direct accessibility for a mounting tool, and an annular chamber located upstream from the discharge end of the venturi outlet initially receives the compressed air which is then caused to be discharged in an annular condition about the commingled detergent and water flow.

Abstract: A process for supplying insulating materials wherein fibrous insulating material moves in a confined turbulent air stream into which an adhesive is injected. Air under pressure is also injected so that portions of the air are entrapped within the fibrous insulating material. The injection of the adhesive and the air increases the pressure of the confined moving air stream so that the fibrous insulating material expands and fluffs when released to the atmosphere.

Abstract: An adjustable flame burner for an industrial furnace comprises a burner body having a baffle with a discharge face forming a forward wall thereof. A first set of space combustion sustaining gas apertures extend axially through the baffle and a second set of apertures also extend axially through the baffle but at an acute angle to the first apertures and also offset from the burner center line in skewed relationship thereto. The apertures of the respective sets intersect at the discharge face and the relative amount of combustion sustaining gas is controlled between the two sets of apertures to provide a tunable, flame release pattern varying between a short cylindrical flame and a long intense all radial flame.

Abstract: A spray mixing nozzle and a method for reacting an acidic fluid and a basic fluid by using the spray mixing nozzle. The nozzle includes a central channel, at least one intermediate annular channel surrounding said central channel, an outer annular channel and a mixing chamber having a generally cylindrical upper section, a generally conically-shaped lower section and an axially aligned discharge orifice. The acidic fluid and the basic fluid are directed through the central channel and the intermediate annular channel into the upper section of the mixing chamber at relatively low velocities and a pressurized gas is simultaneously directed through the outer annular channel into the upper section of the mixing channel at a relatively high velocity. The high velocity gas acts to strip apart and at least partially atomize the acidic fluid stream and the basic fluid stream in the upper section of the mixing chamber.

Abstract: A proportional regulation oil burner of low-pressure air type, wherein a second separate air nozzle is disposed between the oil nozzle and the first air nozzle, and a small amount of low-temperature air is fed into the second air nozzle to prevent the oil nozzle from becoming higher in temperature, whereby heavy oil can be used even when the preheating air of high temperature is used.

Abstract: The invention provides a filler gun suitable for injecting a mixture of particulate solid and liquid binder into a cavity, for example the wall cavity of a building, which comprises a hollow body having an outlet at one end, a binder inlet for liquid binder at the other end, and a side inlet for granular or particulate solid, which side inlet is directed towards the outlet at an angle of less than 90.degree. with respect to the direction of flow of liquid binder from the binder inlet to the outlet in operation of the gun, wherein an outlet sleeve is releasably located in the body between the side inlet and the one end and an inlet sleeve is releasably located in the body between the side inlet and the other end, the inlet sleeve having an axial bore and a side passage opening into the bore which passage is adapted for the reception of a liquid binder supply line, and the body is slotted to enable withdrawal of the inlet sleeve therefrom without prior detachment of the supply line.

Abstract: An apparatus for spraying an oil-water-air mixture onto a plurality of shear blades adjacent to a glass gob feeder and including a multi-compartmented mixing block, a flow meter in the water line, an oil-water ratio controller, signal means connecting the flow meter output to the ratio controller for actuating an oil injector in response to the water flow whereby a metered quantity of oil-water mixture is entrained with the air in the mixing block and individual spray nozzles are connected to each compartment.

Abstract: Melting burner of vitreous silica for the production of massive vitreous silica by the melting of silicon dioxide particles. Propulsion jets fed with oxygen are surrounded by a plurality of oxygen-fed heating jets forming a ring. Oxygen flows around the propulsion jets and the heating jets. The front ends of the propulsion jets, which are overlapped by the front ends of the heating jets, are inclined towards the axis of the melting burner.

Abstract: The present invention relates to a device for atomizing a reaction mixture, said device enabling the reaction mixture to be atomized in a reactor with the aid of at least a first gas and an atomizing nozzle. This device further comprises a supply of a second hot gas at the top of the atomizing device, serving to dry the atomized mixture, a supply of a third gas and means for distributing this third gas comprising an annular space of adjustable width and adapted to distribute in the reactor said third gas in the form of a ring along the inner wall of the reactor, so as to avoid any contact between the reaction mixture and said wall. The invention is applicable to the atomization of a reaction mixture.