Abstract: A wet gas scrubber is provided for removing at least one of solid and liquid particles from water-saturated gases with a Venturi zone adjustable with respect to the flow cross-section. The wet gas scrubber includes a fixed lower Venturi plate and a vertically adjustable upper Venturi plate disposed above the fixed lower Venturi plate. The Venturi plates are substantially parallel to one another and include corresponding segments configured to engage in each other. A plurality of Venturi channels are disposed between the Venturi plates and configured to guide a mixture of a gas to be cleaned and cleaning liquid droplets injected into a stream of the gas by a nozzle. The segments of the Venturi plates engage in each other while the Venturi channels are kept free.

Abstract: A scrubber removes matter (e.g., particulate, gaseous, or liquid) from a gas stream in order to recover the matter and/or to clean the gas. In particular aspects, the scrubber contains multiple venturis that may provide additional flexibility and increased efficiency. The invention also pertains to related methods.

Abstract: A method and apparatus for heating a fluid and treating a combustion products waste stream includes two or more nozzles discharging into a mixing chamber, and an outlet of the mixing chamber discharging to a gas-liquid separator. A liquid output of the gas-liquid separator may be treated to remove carbonaceous or other impurities. The nozzles may include an annular nozzle, Fisenko nozzle, and/or Laval nozzle arranged in a transonic jet module. A heated input liquid may be accelerated to sonic velocity in a main nozzle, causing boiling due to pressure drop prior to mixing with a combustion product stream in the mixing chamber. Heat may be recovered from a mixture discharged from the mixing chamber. Carbonic, sulfuric, or other combustion impurities may be captured by dissolving in water or other solvent in the transonic jet module and then recovered or otherwise used in a liquid stream from the separator.

Abstract: A venturi scrubber which avoids clogging in the throat by dust particles is developed. The scrubber includes a venturi tube, two scrubbing fluid conduits and a storage tank. The venturi tube has a converging section, a diverging section and a throat section which is connected between the converging section and the diverging section. The scrubbing fluid conduit has a top end connected with the bottom end of the converging section of the venturi tube, and a bottom end extending into the storage tank. Thereby, scrubbing fluid can be guided directly into the storage tank without passing through the throat section. As a result, the clogging of dust particles on the converging section of the venturi throat can be minimized and the abnormal increase in the pressure drop of the air flow through the throat can also be avoided.

Abstract: A gas scrubber is presented. The gas scrubber comprises a nozzle that atomizes a liquid to form droplets. The droplets are preferably expelled from the nozzle in substantially a hollow cone spray pattern with a velocity of at least 4000 feet per minute. A stream of gas containing particulates that requires scrubbing interacts with the droplets. After the interaction, the gas-droplet combination impinges on a target. Preferred targets include droplets from a second nozzle, a ducting surface, or a throated passage.

Abstract: A scrubber removes matter (e.g., particulate, gaseous, or liquid) from a gas stream in order to recover the matter and/or to clean the gas. In particular aspects, the scrubber contains multiple venturis that may provide additional flexibility and increased efficiency. The invention also pertains to related methods.

Abstract: A grease water separation apparatus includes an air chamber in communication with an indoor grill; a water scattering member comprising a space in communication with the air chamber, at least one sprinkling duct, and a pump in communication with the sprinkling duct; a heat exchanger connected to the water scattering member and comprising a grease filter and grease holes; a liquid collector connected to the heat exchanger and comprising a water reservoir in communication with the pump, a grease reservoir for collecting grease from the grease holes, and a grease water mixing reservoir; a water-grease separator connected to the heat exchanger and being in communication therewith, the water-grease separator comprising a hollow cylinder having an air outlet and an inlet within the water-grease separator, and a water-grease outlet for flowing water and grease to the grease water mixing reservoir; a centrifugal fan; and an air filter.

Abstract: A combustible energy filtering and recycling system includes a filtering tank, a gas exhaust vent, an overflow vent, and a water-collection chamber. A Venturi gas filter pipe is fixed to the filtering tank and connected with a gas intake pipe which is used for introducing a combustible gas into the gas filter pipe. A first end of the gas filter pipe is connected to a water intake pipe, such that the cooling water can be flowed through the gas filter pipe and collected at the water-collection chamber, and thus dusts and impurities in the combustible gas can be submerged into the cooling water due to the effects of pressure accumulation, air acceleration and pressure reboost produced by the gas filter pipe and the inertia effect. The combustible gas insoluble in water will then be introduced into the gas exhaust vent, so that manufacturers can recycle a high-quality and pollution-free combustible gas.

Abstract: Ancillary embodiments and modifications to a homogenizer unit that increases its applicability to a wide spectrum of chemical or physical-chemical reactions and properties. Methods of introducing reactants and devices that present a tortuous pathway to reactants are placed at a strategic locus (or loci) that delay or modify flow pathways to gases, liquids, aerosols, particulates, or any combination thereof. Reactions of a chemical, physical-chemical, and thermo-chemical nature between a wide variety of matter are possible and readily achieved with the correct solvent(s), reactant(s), or pressure under controlled conditions of pressure, temperature, chemical concentrations, and other impingements. Various well-recognized or established principles are used to expedite reactions.

Abstract: A venturi scrubber which avoids clogging in the throat by dust particles is developed. The scrubber includes a venturi tube, two scrubbing fluid conduits and a storage tank. The venturi tube has a converging section, a diverging section and a throat section which is connected between the converging section and the diverging section. The scrubbing fluid conduit has a top end connected with the bottom end of the converging section of the venturi tube, and a bottom end extending into the storage tank. Thereby, scrubbing fluid can be guided directly into the storage tank without passing through the throat section. As a result, the clogging of dust particles on the converging section of the venturi throat can be minimized and the abnormal increase in the pressure drop of the air flow through the throat can also be avoided.

Abstract: The invention relates to a system and a method for control of emission of volatile gases (VOC) from a holding tank (80) for crude oil during unloading, loading and transport/holding of the oil, such as in an oil tank on board an oil tanker, in which a blanket gas is used to regulate pressure and amount of combustible gas and to prevent ingress of oxygen into the mentioned holding tank for crude oil. The system comprises a recovery device (50) for recovery of hydrocarbon gas from the holding tank (80) for crude oil, a storage tank (18) for liquid hydrocarbons under pressure, supplied from the recovery device (50), and that liquid hydrocarbons are fed to an evaporation device (70) set up to convert liquid hydrocarbons to gas form, for use as blanket gas in a holding tank (80) for crude oil.

Abstract: Embodiments of an abatement apparatus are disclosed herein. In some embodiments, an abatement apparatus may include a scrubber configured to receive an effluent stream from a process chamber and further configured to remove first particles from the effluent stream; a scrubber conduit coupled to the scrubber to receive the effluent stream therefrom and configured to remove second particles from the effluent stream, the scrubber conduit having one or more inlets configured to provide a fluid to sufficiently wet an interior surface of the scrubber conduit to trap the second particles thereon and to wash the second particles therealong; and a central scrubber coupled to the scrubber via the scrubber conduit. In some embodiments, the scrubber conduit is downward sloping from the scrubber to the central scrubber. In some embodiments, a plurality of scrubbers may be coupled to the central scrubber via a plurality of scrubber conduits.

Abstract: A vapor recovery system for use during filling of a tank installation with a volatile liquid. The tank has a fill-pipe for the introduction of the liquid into the tank wherein the exit to which fill-pipe is normally below the liquid level in the tank. The vapor recovery system includes a reduced cross-sectional area region of the fill-pipe and a duct extending from that region through the side wall of the fill-pipe into the ullage space above the liquid level in the tank. The system further has a valve assembly associated with the duct which valve assembly normally closes off the duct, but which valve assembly is opened by flow of liquid along the fill-pipe into the tank, such that vapor in the tank may be drawn along the duct from the ullage space by the reduced static pressure in the region of reduced cross-sectional area of the fill-pipe. A method of recovering vapor using such a system is also described.

Abstract: The use of turbulent contactors to simultaneously absorb selected acid gas components from a gas stream and flash off hydrocarbons entrained in a liquid stream which include a solvent or reagent for the selected gas component. In particular, the method comprises feeding the gas stream and liquid stream into a first contactor where they are contacted co-currently and subjected to turbulent mixing conditions, and passing the multi-phase flow from the first contactor to a second contactor. The multi-phase flow from the second contactor is subsequently separated into a gas phase and a liquid phase.

Abstract: A method of removing acid gas components from a gas mixture. Certain embodiments of the method involve bringing the gas mixture into contact with a liquid solvent or reagent for the acid gases in a first turbulent contactor and subjecting the gas mixture and liquid to turbulent mixing conditions. This causes the acid gas to be absorbed by the solvent or reagent. The fluid mixture is passed into a second turbulent contactor and subjected to further turbulent mixing conditions causing further acid gas to be absorbed by the solvent or reagent. Optionally the fluid mixture is separated into a gas phase and liquid phase.

Abstract: A low-energy venturi pre-scrubber optimized for removing abrasive particles from a gaseous effluent is disclosed. While venturi scrubbers are efficiently used for at removing entrained particulates in air pollution control systems, they can be damaged due to the abrasive characteristics of entrained particles, such as silica particles greater than a micrometer in diameter. According to the present invention, high scrubbing efficiencies can be obtained in equipment that is not damaged by the abrasive particles by first removing the abrasive particles in a low-energy venturi, and then removing the remaining particles in a second scrubber. In addition to improving the lifetime and reducing the maintenance costs of the venturi, scrubbing fluids have fewer large particles, allowing their use in downstream components, such as evaporative coolers.

Abstract: A method for condensing fumes or gases from a tank containing a liquid. The method includes leading the liquid into a venturi to create a low pressure at the venturi. Ports are provided in the venturi at the area where the low pressure is created, and gas/vapor is lead to the ports in the venturi in the low pressure area in such a way that the liquid entrains the gas/vapor and forms a fluid, such that the velocity is reduced and the pressure increased to condense the gas/vapor. The fluid is then led from the chamber to a lower part of the tank for further condensation due to the hydrostatic pressure. An apparatus, a system and uses thereof are also described.

Abstract: Prior to passing through pumping apparatus effluent gas containing hydrocarbons is subjected to washing by being sprayed with aromatic type oil in oil-recirculating washing apparatus. Polycyclic aromatic hydrocarbons contained in the effluent gas are trapped by being absorbed in the oil. The method is suitable for treating effluent gas coming from an installation for chemical vapor deposition or infiltration using a reagent gas containing a precursor for pyrolytic carbon, or else coming from a cementation installation.

Abstract: A venturi scrubber for scrubbing a gas stream to remove undesired gaseous and particulate components. The device includes a scrubber vessel having an external wall, an upper inlet for admitting the gas stream, and a collecting reservoir at the bottom of the vessel for collecting scrubbing liquid. An internal wall extends from the upper part of the external wall to define an axial converging passage for receiving and converging the gas stream from the inlet. An adjoined downwardly extending venturi passage receives the downwardly flowing gas stream from the converging passage, the internal wall abounding the venturi passage terminating above the liquid level at the reservoir; and an annular space is thereby defined between the internal and external walls. An outlet duct for the scrubbed gas stream intersects the annular space at the upper part of the space.

Abstract: A venturi scrubber plate for a waste capture system and method for a waste material entrained in a fluid flow includes an enclosure having a flood sheet over which a liquid flows into a collection trough, an exhaust device which draws the fluid flow from the enclosure, across the collection trough, and through a throat section to a primary scrubber section, the venturi scrubber plate including a plate which is mounted on and substantially covers the collection trough, which has defined therein a plurality of holes, and through which the fluid flow containing the waste material flows, wherein the plate imposes a venturi effect on the fluid flow effective to accelerate the fluid flow so that turbulent mixing of the fluid flow containing the waste material and the liquid takes place and results in improved capture of waste material by the liquid ahead of the primary scrubber section.

Abstract: A venturi scrubber plate for a waste capture system and method for a waste material entrained in a fluid flow includes an enclosure having a flood sheet over which a liquid flows into a collection trough, an exhaust device which draws the fluid flow from the enclosure, across the collection trough, and through a throat section to a primary scrubber section, the venturi scrubber plate including a plate which is mounted on and substantially covers the collection trough, which has defined therein a plurality of holes, and through which the fluid flow containing the waste material flows, wherein the plate imposes a venturi effect on the fluid flow effective to accelerate the fluid flow so that turbulent mixing of the fluid flow containing the waste material and the liquid takes place and results in improved capture of waste material by the liquid ahead of the primary scrubber section.

Abstract: A scrubber assembly for removing particulate paint from a flow of air through a paint application booth is disclosed. A sheet of water received from a water source flows over flood pan collecting paint particles suspended in the flow of air. A separation chamber receives air and particulate paint from the booth and water from the flood pan through first and second scrubbers. The first and second scrubbers extend downwardly from the flood pan. Each scrubber includes an inlet receiving air and particulate paint from the paint application booth and water from said flood pan. The first scrubber includes a first outlet discharging a first stream of air, particulate paint, and water received from the first inlet. The second scrubber includes a second outlet discharging a second stream of air, particulate paint and water received from the second inlet. The first and second streams intersect within the separation chamber.

Abstract: A system for removing water from natural gas which comprises: bringing the natural gas into contact with a liquid including an absorbent for the water; subjecting the natural gas and liquid to turbulent mixing conditions thereby causing the water to be absorbed by the absorbent; and separating a natural gas phase with reduced water content and a liquid phase including the absorbent and absorbed water. The mixing is conducted in a turbulent contactor (11) including a gas inlet (15), a liquid inlet (16), an outlet (104) leading to a venturi passage (105) and a tube (106) extending from the outlet (104) back upstream. The tube (106) may be perforated and/or spaced from the periphery of the outlet (104).

Abstract: A spray application system includes an enclosed spraybooth area in which airborne particles are generated and a scrubber system is located below the enclosed spraybooth area. The scrubber system includes an inlet receiving water and air from the spraybooth area along with airborne particles. The scrubber system transfers the airborne particles to the water for cleaning the air. A generally downwardly opening noise reflector is located directly over the inlet of the scrubber system and is configured to reflect sound generated by the scrubber system back into the inlet of the scrubber system. The reflector is spaced from the inlet of the scrubber system a distance equal to approximately the width of the inlet.

Abstract: Method and apparatus for wet-cleaning crude gas streams, the method involving a flow of the crude gas stream without a pressure drop or with a low pressure drop up to 30 mbar, preferably up to 20 mbar, flowing through one or more parallel venturi throats which is/are sprayed with a scrubbing liquid via one or more periodically pulsating hybrid nozzles.

Abstract: There is provided apparatus for treating water containing industrial waste products. A first tank contains water at a determined pressure. A second tank is placed inside the first tank and communicated with a lower portion thereof. It contains water at a lower pressure than that of the first tank. An inlet device of the discharge product is located in the second tank. A first dilution sector of the waste product is external to the tanks but in communication with the second tank at one end and connected to the other end with a Venturi tube and has an outlet duct for waste product diluted by said second tank. The Venturi tube is in communication with the first tank and creates a depression of the second tank with respect to the first tank. The second tank has an internal portion for the dilution of the industrial waste product.

Abstract: The invention concerns a method for the condensation of fumes or gases from a tank containing a liquid. The method comprises leading the liquid into a venturi to create a low pressure at the venturi. Ports are provided in the venturi at the area with low pressure and gas/vapour is lead to the ports in the venturi in the area with low pressure in such a way that the liquid entrains the gas/vapour and forms a fluid, such that the velocity is reduced and the pressure increased to condensate the gas/vapour. The fluid is then led from the chamber to a lower part of the tank for further condensation due to the hydrostatic pressure. An apparatus, a system and a use are also described.

Abstract: A scrubber assembly for removing particulate paint from a flow of air through a paint application booth is disclosed. A sheet of water received from a water source flows over flood pan collecting paint particles suspended in the flow of air. A separation chamber receives air and particulate paint from the booth and water from the flood pan through first and second scrubbers. The first and second scrubbers extend downwardly from the flood pan. Each scrubber includes an inlet receiving air and particulate paint from the paint application booth and water from said flood pan. The first scrubber includes a first outlet discharging a first stream of air, particulate paint, and water received from the first inlet. The second scrubber includes a second outlet discharging a second stream of air, particulate paint and water received from the second inlet. The first and second streams intersect within the separation chamber.

Abstract: A system and method of scrubbing gas utilizing a liquid to wet a gas stream is provided. The scrubber comprises a container containing a liquid; a tube having a tube inlet opened exterior of the container connected via a throat to a tube outlet allowing a gas to flow from exterior the container into the space above the liquid; a motor having a rotatable shaft; a siphon pipe connected to the rotatable shaft having a siphon inlet disposed below the liquid surface and a siphon outlet positioned above the surface proximate the tube throat; wherein the rotating siphon pipe draws and rotates the liquid through the siphon pipe into the tube throat drawing the gas into the throat mixing with and scrubbing the gas; and a second opening in the container for discharging the scrubbed gas from the container.

Abstract: A system and method of cleansing a gas of undesired particulate, aromas, and gases of the type utilizing a liquid to wet a gas stream is provided. The gas scrubber of the present invention including: a container having a bottom wall and a top wall interconnected by a side wall and containing a liquid therein, the top wall having an opening formed therethrough by a sleeve having an inlet opening and an outlet opening interconnected by a throat, and a mechanism for pressurizing the liquid that may include a pump for directing the pressurized liquid through a converging nozzle discharging the pressurized liquid into the throat to draw a gas into the inlet opening and mix with the pressurized liquid in the throat and discharging the mixture into the container releasing the gas from the mixture and discharging the gas to the atmosphere. Undesired gases are removed from the original stream by absorption in the liquid and particulate is dropped out of the gas stream after being wetted by the liquid.

Abstract: An improved scrubbing dust collector and exhaust gas treatment installation are described. The collector (2) includes a tank (21) containing a washing liquid, a scrubbing tower (22) on the upper portion of the tank into which an exhaust gas is introduced, a jetting nozzle (25) on the upper portion of the tower, and at least one netting member (42) located in a lower portion of the tower. The netting may be installed in a frame (40) which has slits therein. A plurality of netting members may be employed and a lower member may have a smaller mesh size than an upper one. The installation includes the scrubbing dust collector (2), a combustor (1) and a separator tower (23). As washing liquid is jetted from the nozzle (25), it passes downward in the scrubbing tower and forms a membrane-like layer on the netting member thereby providing a larger contact area between the exhaust gas and the washing liquid.

Abstract: A venturi scrubber for cleansing a contaminated gas flow is disclosed. An optimized spray of liquid droplets are injected into the gas flow from one or more nozzles positioned within the throat of each venturi element. The spray is injected counter to the direction of gas flow to increase interactions between contaminant particles and spray droplets. Preferably, hydraulic nozzles are used which emit a hollow cone spray. The spray droplets are preferably in the range of 40-200 microns mean mass diameter (MMD).

Abstract: A compact inlet system for redirecting the flow of gas to a gas treatment apparatus is shown. The inlet system is used to redirect a high volume flow of gas, such as the effluent from an industrial process, by as much as 180° while introducing the gas flow uniformly into the treatment apparatus. The inlet system has a divergent transition section to slow the gas flow, a gas turning section to redirect the gas flow by 90°, and a gas inlet chamber which redirects the gas flow by an additional 90°, while at the same time introducing the gas flow uniformly into a treatment apparatus, such as a gas conditioning tower (GCT). The compact gas inlet chamber of the present invention has an elongate entrance, a circular outlet and a tapered midsection. When used with a GCT the greater uniformity provided by the present invention allows spray nozzles to be positioned within the throat of the entrance venturi of the GCT.

Abstract: In order to bring a gas and a liquid into contact with one another, for example so as to exchange, remove or add components or calorific value present in the gas and/or liquid, the liquid is guided along one or more walls which are provided with small openings, and the gas is guided into the liquid, via these openings, by allowing this liquid to flow along the walls or by moving the walls along the liquid. In order to increase the contact time between gas and liquid, the gas is guided into the liquid in a direction which essentially corresponds to the direction of movement of the liquid with respect to the wall which is provided with openings. A venturi effect is generated in the region of the openings, since subatmospheric pressure is produced at the location where the openings open into the stream of liquid.

Abstract: A method for removing acid gas components from combustion gas and natural gas. The method includes bringing the gas mixture into contact with sea water and subjecting the gas mixture and sea water to turbulent mixing conditions. This causes the acid gas to be absorbed by the sea water. The sea water can be disposed of offshore without any detrimental effect on the environment.

Abstract: The use of a turbulent contactor to absorb a selected gas component from a gas stream. The invention particularly applies to a method of removing selected gas components from a gas stream which includes: bringing the gas stream into contact with a liquid including a solvent or a reagent for the selected gas component in a turbulent contactor, the contactor including a gas inlet, a liquid inlet, an outlet leading to a venturi passage and a tube extending from the outlet back upstream, the tube being perforated and/or being spaced from the periphery of the outlet; subjecting the gas stream and liquid to turbulent conditions in the contactor thereby causing the gas component to be absorbed by the solvent or reagent.

Abstract: A method for removing acid gas components from combustion gas and natural gas. The method includes bringing the gas mixture into contact with sea water and subjecting the gas mixture and sea water to turbulent mixing conditions. This causes the acid gas to be absorbed by the sea water. The sea water can be disposed of offshore without any detrimental effect on the environment.

Abstract: The invention relates to the field of jet technology. A gas-liquid mixture is fed from a jet apparatus into a jet converter where the flow of the gas-liquid mixture first undergoes expansion and thus is transformed into a supersonic gas-liquid flow. This supersonic gas-liquid flow is then decelerated in a shaped flow-through channel section t of the converter. A pressure jump is generated there and partial transformation of kinetic energy of the flow into potential energy of pressure takes place. In order to implement this operational process, the system is furnished with a jet converter, which includes an expansion chamber and a shaped flow-through section, the inlet of the expansion chamber is connected to the jet apparatus outlet, and the outlet of the shaped flow-through section is connected to a separator.

Abstract: A discrete pod gas scrubber system for removing contaminants from the air of a work area, such as a paint spray booth. Each scrubber pod includes an inlet section having opposed converging planar walls and side walls, an intermediate section having opposed diverging walls and side walls communicating with the inlet section through a reduced diameter venturi, and an outlet section having a bottom wall perpendicular to the longitudinal axis of the scrubber pod, a diverging top wall and an end wall. The end wall includes an orifice opening and orifice plates for adjusting the orifice opening and the combined lengths of the aligned scrubber pods are between fifty and ninety percent of the total length of the scrubber system, more preferably between sixty percent and eighty five percent of the total length. The scrubber system of this invention significantly reduces the noise generated in the work area normally located above the gas scrubber system.

Abstract: Degassing is accomplished by driving a gas-containing solution to a subatmospheric pressure approximately equal to the solution vapor pressure, and maintaining the subatmospheric pressure notwithstanding evolution of gas from the solution. This may be accomplished using a vacuum tower arrangment whereby a column of the gas-containing liquid is drawn to the maximum physically attainable height. So long as the vacuum is coupled to the liquid column above this height (generally on the order of 34 feet, depending on the ambient temperature and the composition of the liquid), the liquid will not be drawn into the vacuum, which creates a non-equilibrium region of extremely low pressure above the liquid that liberates dissolved gases. Moreover, liquid introduced into the low-pressure region above the column will fall onto the column without entering the vacuum system.

Abstract: An apparatus and process for oxygenating a liquid. The apparatus includes a liquid pump fluidly connected to an injector having a liquid inlet forming a nozzle, a liquid outlet and an oxygen inlet therebetween, the injector arranged such that the injector liquid inlet is above the injector liquid outlet, and a downwardly opening first diffuser portion connected to the injector outlet. The first diffuser portion is serially connected to a second diffuser portion located below the first diffuser portion. Liquid being pumped by the pump is conducted downwardly through the injector and the first diffuser portion to the second diffuser portion.

Abstract: A dry pump (32) has an inlet connected to the oven (10) for the purpose of establishing the desired low pressure conditions inside the oven and for extracting residual gas therefrom, a hydrolysis reactor (50) is connected to an outlet of the dry pump in order to receive residual gases coming from the oven, the hydrolysis reactor includes a first outlet (52) for solid deposits or for acid solutions coming from hydrolysis of the gases it receives, and it has a second outlet (54) for gas which is connected to the atmosphere. Gas injection means (46, 48) are located between the inlet of the dry pump (32) and the hydrolysis reactor (50) to prevent any backflow from the hydrolysis reactor towards the pump. Water feed means (74, 76) are connected to the hydrolysis reactor (50), at least via the second outlet (54) thereof, in order to put into solution the acid vapors that come from the hydrolysis reactor, thereby avoiding discharging them in the atmosphere.

Abstract: Gas is compressed in a liquid jet compressor to high pressures, e.g. at least 7 atm, by using liquid injected under high pressure, e.g. at least 16 atm, to obtain a high velocity liquid injection into the compressor, which aspirates the gas to be compressed into the compressor.

Abstract: A process is disclosed for removing the very fine oxide particles produced during regeneration of used pickling acids by pyrolysis. The process includes the step of spraying water into the gaseous stream to produce a mist of fine droplets and thereafter passing the gaseous stream through a liquid separator. The invention is also directed to a plant for carrying out the process where the plant includes a nozzle to spray water droplets into the gaseous stream before the drop separator.

Abstract: The invention concerns a scrubber for cleaning work area exhaust air polluted with particles, in particular exhaust air containing particles of paint from a paint spray booth. The scrubber has a flow duct (5), defined in cross section by two opposite duct walls (7). The flow duct (5) includes an inlet region (4) into which the polluted exhaust air flows and into which a fluid (16), running along the duct walls (7), is introduced. The flow duct (5) terminates downstream in an outlet nozzle (3) which runs, transversely to the general flow-in direction (18), into the inlet region (4) and is formed between an upper (8) and a lower (9) duct wall section. A guide wall (2), which has at least one curved portion, tangentially adjoins the upper duct wall section (8), downstream of the outlet nozzle (3).