Abstract: An apparatus and method for assembling an inducer assembly for inducing a rotation on an airflow passing within a turbine engine. The inducer assembly can provide a volume of fluid from a compressor section to a turbine section of the engine. The inducer assembly can include the combination of separate segments to form an annular inducer.

Abstract: A precleaner system for an air intake system. The precleaner system includes precleaners each having flow paths that induce a rotation to air flow and separate out particulate matter. The particulate matter is ejected from an outlet port in each of the flow paths and out of a dust ejector. The precleaned air is collected into a plenum from each of the precleaners. The precleaned air can flow from the plenum to a precleaner system outlet and the precleaned air can be received by an air intake system. A cover can be used to block air flow through one of the precleaners to tune the precleaner system to the desired airflow.

Abstract: A water separator (108) includes a tube (112) defining a longitudinal axis, wherein the tube (112) includes a tube wall separating an interior (114) of the tube from an exterior (116) thereof. A tube insert (118) is mounted within the tube (112). The tube insert (118) includes a sheet (119) that is helically twisted about the longitudinal axis. An environmental control system (100) includes an air conditioner (102) with a discharge duct (104) for providing cooled air to an air conditioned space. A water separator (108) as described above is connected in line with the discharge duct (104) for passage of cooled air therethrough.

Abstract: A system and a method for removing debris from a flow path of a cooling flow is provided. The system includes a turbine including at least one airfoil. A cooling flow is communicated to cooling holes via piping that includes a dead leg debris extractor in order to cool the airfoil. The dead leg debris extractor includes a means to capture and retain debris from the cooling flow continuously during online operation of the turbine.

Abstract: An electrostatic air cleaner comprises a main body, a corona discharged module, a collector module and a fan. The main body has an airflow passage for disposing the corona discharged module, the collector module and the fan. The fan is used for drawing an air stream into the airflow passage. The corona discharged module is used for discharging particles in the air stream. The charged particles are then captured by the collector module.

Abstract: An apparatus, for separating liquid droplets out of a feed gas stream, includes a delay vessel for preliminary separation of some of the liquid droplets out of the feed gas stream under gravity, with an inlet line for the feed gas stream and an outlet line for the gas stream which has been depleted of liquid droplets and which flows out of the delay vessel and a tangential supply thereof into a centrifugal droplet separator. The outlet line is arranged in the upper region of the delay vessel and spaced apart from the inlet line to such an extent that the delay time of the gas stream in the delay vessel is at a maximum, and with an outlet line for the liquid separated in the delay vessel at the base thereof.

Abstract: One exemplary embodiment can be a process for separating particulate solids from a gas stream. The process can include regenerating a catalyst in a regenerator, separating particulate solids in first and second cyclone stages, passing the gas stream from the second cyclone stage to an external third stage separator, and passing the gas stream from the external third stage separator to a cyclone recirculator to obtain a clean gas stream.

Abstract: A dust collection device for a concrete cutter includes a suction duct disposed on an upstream-most side; a plurality of dust collectors of a cylindrical cyclone system disposed in series downstream of the suction duct; and a plurality of dust collection chambers connected respectively to the plurality of dust collectors and storing individually dust separated in each of the dust collectors. A blower is disposed between any two of the plurality of dust collectors and performs intake and discharge of air by rotation of a built-in fan. A return flow channel communicates the suction duct with the dust collection chamber which is connected via a connection portion to a dust collector disposed on a downstream-most side from among the plurality of dust collectors, or a return flow channel communicates the suction duct with the connection portion.

Abstract: The present invention is directed to a method and a system for separating gas components of a combustion gas. A compressible feed stream derived from a combustion gas that contains at least one target compressible component and at least one non-target compressible component is mixed in a substantially co-current flow with an incompressible fluid stream comprising an incompressible fluid in which the target component(s) is/are capable of being preferentially absorbed. Rotational velocity is imparted to the mixed streams, separating an incompressible fluid in which at least a portion of the target component is absorbed from a compressible product stream containing the non-target compressible component(s). The compressible feed stream may be provided at a stream velocity having a Mach number of at least 0.1.

Abstract: Embodiments of recirculating filtration and exhaust systems for material processing systems are disclosed herein. A material processing system configured in accordance with one embodiment includes an enclosure for processing a workpiece, the enclosure having an enclosure inlet and an enclosure outlet. The system also includes a first flow path fluidly coupled to the enclosure inlet and the enclosure outlet, and a first filtration assembly in the first flow path. The first filtration assembly draws airflow from the enclosure and returns the airflow to the enclosure. The system further includes a second flow path in fluid communication with the first flow path upstream from the enclosure inlet, and a second filtration assembly in the second flow path. The second filtration assembly draws airflow from the first flow path and returns airflow to the first flow path.

Abstract: A dust collection system has a cyclone separator in which dust is separated from an air stream and the air stream is passed from a separator and flows through a final filter back into the ambient air. A flame arrester is positioned downstream of the separator, either in advance of or after the final filter. The flame arrester defines a multiplicity of narrow channels to permit exhaust air flow but block any flame front. In a preferred embodiment the flame arrester is in the form of a sheath of a porous metal material surrounding the final filter. The sheath may comprise a metal wire mesh screen, with a guard cage surrounding the screen.

Abstract: A dust collector arrangement has a dust separator supported on a frame, with a lid for the dust collection barrel is mounted onto the frame below it. The lid is supported at a fixed elevation above the surface of the shop floor to create a space or clearance between the rim of the dust collection barrel and the lid. The barrel is supported on casters, and can be rolled into place under the rim, and can be rolled out for emptying. Over-center latches positioned at intervals around the upper part of the barrel side wall, engage corresponding structure on the lid. These pull the barrel upwards against the lid and with the barrel casters lifted off the floor surface. The latch members release to lower the barrel for emptying.

Abstract: A dust collection arrangement employs a variable frequency drive to supply AC to its fan motor. A current sensor measures the current drawn by the motor, and this is compared with a preset value. The variable frequency drive adjusts the frequency of the AC applied to the motor to maintain the motor current at the preset level. This keeps the flow of air in the system optimal as dust producing tools are added or taken off.

Abstract: One exemplary embodiment can be a process for separating particulate solids from a gas stream. The process can include regenerating a catalyst in a regenerator, separating particulate solids in first and second cyclone stages, passing the gas stream from the second cyclone stage to an external third stage separator, and passing the gas stream from the external third stage separator to a cyclone recirculator to obtain a clean gas stream.

Abstract: A cyclonic dust collector arrangement employs a cyclone that has a conic body formed of a conic wall. An upper divider plate closes off the upper end of the conic body, with a vortex tube descending from a central passage in the divider plate. The conic body has a narrow nose at a lower end so that the upper divider plate and the lower nose define a cyclonic chamber within the conic body. The inlet conduit penetrates the conic wall below the divider plate. The fan chamber of the separator is mounted above the divider plate, and serves to induce air flow from the inlet conduit into the cyclonic chamber, and through said vortex tube into the fan chamber. The air is discharged through a final filter. This construction has reduced manufacture costs and improved dust separation.

Abstract: A dust collection device for a concrete cutter includes a suction duct disposed on an upstream-most side; a plurality of dust collectors of a cylindrical cyclone system disposed in series downstream of the suction duct; and a plurality of dust collection chambers connected respectively to the plurality of dust collectors and storing individually dust separated in each of the dust collectors. A blower is disposed between any two of the plurality of dust collectors and performs intake and discharge of air by rotation of a built-in fan. A return flow channel communicates the suction duct with the dust collection chamber which is connected via a connection portion to a dust collector disposed on a downstream-most side from among the plurality of dust collectors, or a return flow channel communicates the suction duct with the connection portion.

Abstract: Carbon dioxide and oxygen are separated from a feed gas, preferably derived from flue gas from an oxyfuel combustion process, by diffusion across at least one membrane in a membrane separation system to produce separated carbon dioxide gas comprising oxygen, which is fed to the oxyfuel combustion process to improve the performance of the process.

Abstract: A particulate filtration device includes a filter with a feed inlet side for a feed gas and an filtrate outlet for a filtrate, feed gas channels and filtrate channels, and one or more diaphragms between the feed inlet side and the filtrate outlet. Opposite to the feed inlet side a particulate outlet is arranged with a collector compartment attached to the particulate outlet for collecting particulates retained in the feed gas channels.

Abstract: An inertial separator comprising a tubular body, the tubular body comprises a composition comprising a polymer selected from the group consisting of a cyclic olefin polymer and a cyclic olefin copolymer, and, a polyhedral oligomeric silsesquioxane and/or a flame retardant and/or an anti-static additive, is disclosed.

Abstract: An oil mist collection system for a plurality of machine tools each having a coolant system directing coolant at the cutting tools and collecting coolant and returning the same to a filtration system includes an oil mist collector at each station collecting oil from mist present at each station and draining the oil back to the associated machine tool coolant return, and return air ducts from each of the oil mist collectors extending to a central air filtration apparatus. Each oil mist collector preferably includes a vertical spiral coil wall defining a spiral flow path into which the mist is directed, the oil droplets collecting onto the spiral coil wall and draining into a collection chamber below the spiral coil wall for return to the associated machine tool via a drain line. Each mist collector is comprised of an inlet housing, a spiral coil housing and a collection housing forming a unitary housing assembly.

Abstract: A system for recycling vented atmosphere gas discharged from a heat treatment chamber utilizing a protective atmosphere gas therein. The system includes an atmosphere recycling apparatus configured to receive the vented atmosphere gas. The atmosphere recycling apparatus includes a gas separator configured to separate the vented atmosphere gas into a purified atmosphere gas stream and an impure stream. The atmosphere recycling apparatus is configured to feed the purified atmosphere gas stream to the heat treatment chamber. A storage vessel can be provided to receive the purified atmosphere gas stream from the atmosphere recycling apparatus, and configured to supplement an atmosphere gas supply to the heat treatment chamber with the purified atmosphere gas stream.

Abstract: An oil fill cap for an internal combustion engine replaces a standard cap and provides separation of air and oil in a separation zone within the cap body. The cap body defines a plurality of passages therethrough, including an upstream passage, and first and second downstream passages meeting at a separation junction. The cap body defines a separation zone at the separation junction and receiving the air/oil mixture from the engine through the upstream passage, and sending separated air to the first downstream passage, and sending separated oil to the second downstream passage.

Abstract: An active carbon coated filter element is proposed for preventing the issuance of hydrocarbons from an opening. It includes a medium containing active carbon, which is of substantially planar shape and has a frame. The frame is provided with sealing lips on at least two sides. The medium is arranged with the frame in a plastic holder, the plastic holder being able to be inserted and fixed in the opening. The sealing lips engage the wall of the opening.

Abstract: A process for separating carbon dioxide from a fluid containing carbon dioxide, NO2, and at least one of oxygen, argon, and nitrogen comprises the steps of separating at least part of the fluid into a carbon dioxide enriched stream, a carbon dioxide depleted stream comprising CO2 and at least one of oxygen, argon, and nitrogen and a NO2 enriched stream and recycling said NO2 enriched stream upstream of the separation step.

Abstract: A portable filter assembly for providing filtered air to an enclosed space includes a housing having an exhaust port connected to the enclosed space, an internal air intake port connected to the enclosed space, and an external air intake port connected to the outside of the enclosed space. A fan provides a partial vacuum to the internal and external air intake ports. A filter is located in the housing and the assembly is arranged such that the assembly simultaneously filters re-circulated air from the enclosed space through the internal air intake port and filters external air from the outside of the enclosed space through the external air intake port and filters the air to the enclosed space through the exhaust port.

Abstract: The present invention relates to a device for treating a gas/liquid mixture, comprising: an inlet opening for the mixture; an outlet for the mixture located downstream; rotating means arranged in the tube for setting the mixture into rotating movement; one or more outlet openings arranged downstream relative to the rotating means for allowing a part of the mixture to flow laterally out of the tube; a return conduit arranged in axial direction through the rotating means for reintroducing into the tube the flow which has exited via the outlet openings; and divergence means arranged close to the outlet opening of the return conduit for allowing the reintroduced flow to diverge laterally.

Abstract: The present invention is a system and method for improving the useful life of sorbent beds, such as activated carbon filter beds. It is known that breakthrough in carbon filter beds first occurs at the low gas velocity regions of the filter bed, i.e., at the filter's edges. A recirculation jacket filter system diverts already filtered air from the downstream side of the filter bed toward the peripheral region of the upstream side of the filter bed so that contaminants near the filter's edges are reduced and filter life is improved.

Abstract: An arrangement used for filtering out conveying air when supplying fiber material to a processing machine is provided. The arrangement has an essentially vertical filling chute for the fiber material, the chute having an upper intake opening and a lower exit opening, a device with pneumatic fiber feed at the upper intake opening, and a floccule-forming device at the lower exit opening including a system of draw-in rolls and a fast-rotating opening roll. The chute includes at least one air-permeable surface for separating the fiber material from the conveying air. An evacuating device evacuates the filtered out conveying air. An exhaust air device is coupled to the evacuating device and has an air stream regulator which is connected to a control and regulating device. The conveying air stream is guided along the opening roll, and a partial air stream of the filtered out conveying air is guided into the exhaust air device.

Abstract: A gas reduction apparatus 12 is provided for reducing the amount of gas 15 emitted from a cooling tower 10 into the atmosphere. The apparatus 12 in accordance with the principles of this invention includes a first air conduit 13 which collects the gas 15 and chemical particles therein released from the cooling tower 10 before they are released into the atmosphere. The conduit 13 then provides a path for the gas 15 and chemical particles formed therein to flow to a liquefier 16. The liquefier 16 converts the gas 15 to a liquid 17. A filter 32 is coupled adjacent the liquefier 16 to separate the chemical particles released into the liquefier from the liquid 17 formed in the liquefier. The liquid 17 is then directed through an outlet conduit 34 to a cooling tower reservoir 36 where it finds itself back into the cooling tower 10.

Abstract: Improvements are provided to enable an air-curtain portal to be used for the triage and decontamination of persons who may have been exposed to toxic gas vapour or particulate material.

Abstract: An apparatus for separation of a liquid from a multi-phase fluid flow flowing through a pipeline, wherein the fluid flow is set in rotation so that it is separated into a central zone (5) essentially containing gas, and an outer annular zone (6) essentially containing liquid, and from which the gas and the liquid in the two-zones are discharged via respective outlet means (10, 16). The apparatus comprises an essentially tubular casing (1) arranged to constitute a part of the actual pipeline, a spin element (4) for rotation of the fluid flow being located at the upstream end of the casing (1). The outlet means for the gas comprises an outlet element (10) arranged at the downstream end of the casing (1) and having a central, axially extending passage (11) for the gas, and an outer surface which, together with the inner surface of the casing (1), forms an annulus (12) for the inflow of liquid, a barrier (15) for the liquid being formed at the downstream end of the element (10).

Abstract: Cyclonic separating apparatus (10) comprises a cyclone body (12) having an inlet (16) for introducing dirt-laden air into the cyclone body (12) in a tangential manner. A central outlet (18) is provided for conducting cleaned air out of the cyclone body (12). The apparatus (10) further comprises a dirt-collecting chamber (14) having an entry portion (30) communicating with the interior of the cyclone body (12) and a collecting portion (32). The apparatus (10) further comprises an air return duct (42) having a first end communicating with the collecting portion (32) of the dirt-collecting chamber (14) and a second end communicating with the interior of the cyclone body (12). This arrangement allows a proportion of the main airflow to be bled into the dirt-collecting chamber (14) and returned to the cyclone body (12) without passing back along the entry portion (30).

Abstract: The device for regulating a flow rate of an air-liquid centrifuge separator includes a gas outlet pipe, an outlet pipe for separated liquids and an inlet pipe through which a fluid to be separated enters the separator. The device includes a by-pass pipe, arranged between the liquid outlet pipe and the fluid inlet pipe, which removes liquid from the liquid outlet pipe and transfers it to the fluid inlet pipe when a pressure of the liquid in the liquid outlet pipe exceeds a predetermined level. The device is particularly useful in separators for dental aspiration plants.

Abstract: A walk-through portal or other enclosure is provided for at least one of detection of a predetermined substance on a subject and decontamination of a subject from a predetermined substance, the subject being either a person or, for other type of enclosure, an object, such as a suitcase. The walk-through portal defines an examination zone and can be substantially open on at least one side, to permit a subject readily to enter and to exit the examination zone. A closure closes off the examination zone from the exterior. An inlet into the examination zone and an outlet from the examination zone permit air or other gas to flow through it, and this is pumped by a pump, so as to entrain at least one of vapors and particulates from such substance. At least part of the exhaust through the outlet can be passed to an analyzer, such as an IMS, to detect substances of interest.

Abstract: A particulate control system which includes a collector such as an electrostatic precipitator (ESP) is improved by incorporation of a collector, such as an electrostatically enhanced separator (EES) connected parallel with the collector and wherein the output flow from the collector is split and a portion of the output flow from the collector is directed through the separator. The input flow to the collector may also be split so that a portion is directed to the separator as well as the collector. A bleed line may also be employed to connect the separator to the collector resulting in a bleed flow from the separator to the collector.

Abstract: Phthalic acid anhydride is recovered from a gas stream containing phthalic acid anhydride vapors by passing the gas stream upwardly through a vertical tube so that the gases expand at the orifice at the upper end of the tube and mix with granules entrained above the tube by fluidizing gas of a fluidized bed of phthalic acid anhydride granules around the tube. The tube, kept free from phthalic acid anhydride granules and the fluidized bed, is indirectly cooled.

Abstract: Provided is a novel method of and system for recovering and recirculating a deuterium-containing gas. According to the inventive method, a deuterium-containing feed gas is introduced into a chamber. An exhaust gas containing deuterium is removed from the chamber. The deuterium concentration of the exhaust gas is adjusted to a predetermined value, thereby producing a concentration-adjusted gas stream. Finally, the concentration-adjusted gas stream is introduced into the chamber as the deuterium-containing feed gas. The invention makes the use of deuterium, for example, in the mass production of semiconductor devices, commercially feasible.

Abstract: In a process for recycling fine-particle solids (4) discharged from a reactor vessel (1) at a discharging position of the reactor vessel (1) by means of a gas, at a recycling position (16) of the reactor vessel (1), the solids (4) are separated in a solids separator (3) and subsequently collected in a collecting vessel (8) and from the same are recycled into the reactor vessel (1) by means of a conveying gas. To enhance the operation of the solids separator (3), but without causing an additional load on the reactor vessel (1), an additional gas stream (23) independent of the gas stream in the reactor vessel is conducted through the solids separator (3) in a circuit, in the direction of flow of the solids (4).

Abstract: Method and device for treating a gas/liquid mixture, the device comprising: an inlet for infeed of the mixture; a flow element placed in the line of the inlet and having one or more swirling members to cause turbulence of the mixture; an outlet placed in the line of the flow element for outfeed of the gas flow having liquid at least partially removed; one or more feedback lines for discharge of the separated liquid and a part of the gas flow, wherein the feedback lines are connected onto a channel arranged centrally in the flow element; and anti-creep flow means for preventing creep flow along the flow element.

Abstract: A recirculating fume scrubber system in which fume is evolved from an aqueous bath in a process vessel, such as an HCl pickling tank, and the evolved fume is scrubbed with water and then the scrubbed gas is divided into two portions, one of which is released to a stack vented to atmosphere and the other portion is recirculated to the scrubber.

Abstract: A water-purifying apparatus, for reducing the radon content of radon-contaminated water, includes a reactor tank for treating the radon-contaminated water, a radon-releasing structure arranged in the upper part of the reactor tank to receive water from a first pump adapted to supply water from a source of water containing radon-contaminated water, the water from the radon-releasing structure accumulating in the reactor tank, an inlet duct extending between the first pump and the radon-releasing structure, an outlet duct from the reactor tank, the outlet duct being connected to a water consumption system, and a radon-gas outlet from the reactor tank. In a mixing structure, water from the first pump is mixed with water from the reactor tank with the aid of a second pump in order to produce such a water flow in the radon-releasing structure as results in effective radon release.

Abstract: A separating system for separating material transported by air utilizing apparatus having a tangential inlet for a stream of air and entrained material, a bottom material exit, a boundary wall air exit and a central interior air exit. Each air exit includes a perforated wall or screen through which air is removed or separated from the entrained material. Enhanced separating action is achieved through coupling two such separators in a loop arrangement such that the material discharge from a first separator is conveyed via a relay stream of air to serve as the input to a second separator, while the entire air exhaust from the second separator is returned as one of a plurality of inlet streams to the first separator. A further advantage is realized by partitioning the air exhaust of the first separator into a plurality of parallel passageways which can be individually closed.

Abstract: An integral coalescer filter-membrane device to provide clean sample gas to gas analyzers. The device includes a housing, an inlet port for feed gas, an outlet port to withdraw clean sample gas essentially free of entrained liquids, such as water, and particulate material which might contaminate or interfere with the gas analyzer, a bypass port and a drain port to remove by gravity coalesced liquid. The device includes a filter tube to coalesce and filter the feed gas stream and a chamber having a supported hydrophobic selected porosity membrane. The outlet port receives clean sample gas from the upper portions of the chamber, while the bypass port removes coalesced filtered gas from a lower chamber.

Abstract: A method and apparatus for treating synthesized gas ("syngas") comprises introducing the syngas into a lower portion of a vessel. The syngas flows in the lower portion through a static regenerative hot gravel bed and into an upper portion of the vessel containing particulate material at a temperature less than that of the syngas in a manner so that the material reduces the temperature of the syngas and reacts with the syngas to abate pollutants therein, and the syngas entrains at least a portion of the material. The entrained material is then separated from the gas, cooled in a heat exchanger, and returned to the vessel, while the separated syngas is passed to downstream facilities.

Abstract: A pressure side integrated air filter assembly for a turbocharged engine includes an air filter carrier which is designed and arranged to receive an air filter element and which is adapted to mount to the intake manifold of the turbocharged engine. The air filter carrier which receives an air filtering element is disposed within the intake manifold and the intake manifold cover serves as the air filter cover. A peripheral flange on the air filter carrier is used to support the air filter assembly by being clamped between the intake manifold cover and the intake manifold. This peripheral flange substitutes for the intake manifold gasket. The air filter carrier and the air filter element each have a trapezoidal shape in cross section as a way to conserve space within the intake manifold.

Abstract: A pre-filter for removing lint particles from an air stream entering a filter system wherein an enclosed housing has an air inlet for receiving particle containing air from a remote source and an air outlet in communication with a filter system, a screen covering the air outlet, a vacuum nozzle having a lint inlet adjacent the screen surface, an air conduit having an intake opening communicating with the nozzle, an exhaust fan having an intake opening communicating with the air conduit discharge opening to draw lint containing air from the nozzle through the air conduit, and a drive mechanism for moving the nozzle lint inlet across the screen surface.

Abstract: Solid particulates are removed from a solid particulate-laden fluid stream by passing the solid particulate laden fluid stream into a potential flow centrifugal separator which splits the potential solid particulate-laden fluid stream into a clean fluid stream and a concentrated solid particulate-laden fluid stream, passing the concentrated solid particulate-laden fluid stream into a solids collector which extracts solid particulates from the concentrated solid particulate-laden fluid stream leaving a fluid stream having a reduced solid particulate content, and conducting the fluid stream having a reduced solid particulate content back into the potential flow centrifugal separator for further processing.

Abstract: A purification unit for separation of solid particles from gases comprises at least one group of a plurality of flow cylinders arranged in a common chamber. Each flow cylinder has a fixed rotary head for setting incoming gas in rotary motion, an outlet diffuser for purified gas projecting concentrically into the outlet end of each flow cylinder and forming together with the surrounding cylinder an annular gap with its inlet portion. Through this gap, separated particles stream out to the chamber. In order to obtain at least the same purifying effect with several dust separators connected in parallel and each including a flow cylinder with a fixed rotary head and outlet diffusor as with one single dust separator, the common dust collecting chamber is connected by way of at least one suction line to a steplessly adjustable blower in order to maintain a negative pressure in the chamber optimizing the purification.

Abstract: A gas stream containing CO.sub.2 and H.sub.2 S is contacted with an alkanolamine in a contacting zone. The rich solution is then selectively stripped in a stripping zone to produce a gas stream containing a higher CO.sub.2 :H.sub.2 S mole ratio than the initial stream. This stream can be recycled to the alkanolamine contacting zone. The partially stripped solution can be introduced into another stripping zone to provide a third gas stream which is rich in H.sub.2 S and lean in CO.sub.2 suitable as feed for a Claus Unit and a lean alkanolamine solution which can be recycled to the contacting zone.

Abstract: A method and device for removing solid or liquid particles contained in suspension in a gas stream by an electric field, wherein the gas stream flow is directed past ion sources which simultaneously act as field electrodes. The suspended particles are thereby changed in a bipolar manner, such that approximately half of the particles are positively charged and the other half negatively charged, and are forced by the electric field to migrate across the gas stream into a preferred neutralization zone where they are concentrated, discharged, partially agglomerated and coagulated. Subsequently, the particle-enriched and particle-depleted partial gas stream thus formed are separated and treated further in accordance with operating requirements. Thereby the remaining gas stream maximally loaded with particles is fed into a particle-removal device where their withdrawal occurs.