Abstract: A plurality of air-releasing openings with inclined sidewalls are arranged at the periphery of the water tank of an aroma diffuser product, each air-release opening disposed in a position that is set at a certain angle along the inclined direction of the sidewalls. The certain angle being formed by the center longitudinal axis of the exit side of the opening relative to the radius of the water tank. A plurality of mist-releasing openings is arranged non-horizontally at the upper part of the water tank or the periphery of the water tank cover. An aroma diffuser or ultrasonic atomizer configured with the plurality of air-releasing openings and/or the plurality of mist-releasing openings.

Abstract: A controlled dispersion module includes a distal end coupled to an effluent feed. A proximal end having at least one baffle is disposed within the controlled dispersion module. The proximal end is fluidly coupled to the coke drum. In various embodiments, the proximal end is curved to match a curvature of the coke drum. In various embodiments, the at least one baffle includes a plurality of baffles.

Abstract: The present invention describes a packing with a three-dimensional structure which is particularly suited to creating homogenous and anisotropic mixing between the gas phase and a dispersed solid phase moving in counter-current flow. Application of this packing to the stripper of fluidized catalytic cracking units.

Abstract: An inlet device for use in a vessel to facilitate separation of a gas phase from a liquid phase in a fluid stream. The inlet device has separation cans positioned at each of the outlet ends of a flow channel. Each separation can has a cylindrical wall and an elongated inlet opening in the cylindrical wall to allow the fluid stream to be introduced in a tangential direction into an open interior region where it swirls to facilitate separation of the gas phase from the liquid phase in the fluid stream. The liquid phase exits the separation can through slots in the cylindrical wall and through an open lower end of the open interior region. The gas phase exits the separation can by ascending upwardly through an open upper end of the open interior region.

Abstract: A semi-dry type method for automatically sampling PM2.5 particles. The method collects an aerosol sample in a dry mode and extracts it in a wet mode to prevent sampling artifacts. In the dry mode, a first stage utilizes carbon brushes as discharge electrodes to charge aerosol particles which are then collected on a cylinder wall by an electric field setup between a high-voltage central metal rod and a grounded cylinder in a second stage. In the wet mode, deionized (DI) water is injected into an electrostatic particle-into-liquid sampler (EPILS) in a pulsation manner by opening and closing solenoid valves intermittently, which dislodges aerosol particles deposited on the cylinder wall effectively to become a liquid aerosol sample. The liquid aerosol sample is then analyzed for chemical compositions automatically.

Abstract: A desulfurization absorption tower, a method for setting up the same and a method for operating the same. The tower may include an internal anti-corrosion layer that may be used for contacting the flue gas and the desulfurization absorption liquid, may define the tower chamber, and may include stainless steel plate whose thickness is 1.0 mm to 6.0 mm. The tower body may include an external supporting layer that may be used for supporting the anti-corrosion layer and may include carbon steel. The supporting layer and the anti-corrosion layer may be designed to jointly bear a load, wherein the supporting layer may be designed to bear a large part of the load, and the anti-corrosion layer may be designed to bear a small part of the load.

Abstract: A desulfurization absorption tower, a method for setting up the same and a method for operating the same. The tower may include an internal anti-corrosion layer that may be used for contacting the flue gas and the desulfurization absorption liquid, may define the tower chamber, and may include stainless steel plate whose thickness is 1.0 mm to 6.0 mm. The tower body may include an external supporting layer that may be used for supporting the anti-corrosion layer and may include carbon steel. The supporting layer and the anti-corrosion layer may be designed to jointly bear a load, wherein the supporting layer may be designed to bear a large part of the load, and the anti-corrosion layer may be designed to bear a small part of the load.

Abstract: A mixing system for an exhaust system includes a first mixing device having a plurality of first auger blades and an inlet having a first cross-sectional area. A second mixing device is separate and downstream from the first mixing device and includes a second auger blade. The second mixing device includes an inlet having a second cross-sectional area greater than the first cross-sectional area. A flow path longitudinal centerline of the first mixing device extends at an angle to a flow path longitudinal centerline of the second mixing device. A flow path longitudinal centerline of the first mixing device intersects the second auger blade. The first mixing device is disposed within a first portion of an exhaust pipe and the second mixing device is disposed in a second portion of the exhaust pipe. The second portion has a larger cross-sectional area than the first portion.

Abstract: A desulfurization absorption tower, a method for setting up the same and a method for operating the same. The tower may include an internal anti-corrosion layer that may be used for contacting the flue gas and the desulfurization absorption liquid, may define the tower chamber, and may include stainless steel plate whose thickness is 1.0 mm to 6.0 mm. The tower body may include an external supporting layer that may be used for supporting the anti-corrosion layer and may include carbon steel. The supporting layer and the anti-corrosion layer may be designed to jointly bear a load, wherein the supporting layer may be designed to bear a large part of the load, and the anti-corrosion layer may be designed to bear a small part of the load.

Abstract: A fan assembly includes a motor-driven impeller for creating an air flow, a casing including an interior passage for receiving the air flow, and a plurality of air outlets for emitting the air flow from the casing. The casing defines and extends about an opening through which air from outside the casing is drawn by the air flow emitted from the air outlets. The fan assembly also includes at least one heater for heating at least a first portion of the air flow, and means for diverting at least a second portion of the air flow away from said at least one heater. The plurality of outlets includes at least one first air outlet for emitting the relatively hot first portion of the air flow and at least one second air outlet for emitting the relatively cold second portion of the air flow.

Abstract: A method for the efficient solubilization of carbon dioxide in water through the use of high energy impacts is disclosed. The method can optionally includes mixing the carbon dioxide and water to form an annular dispersed flow, accelerating the carbon dioxide and water prior to the collision; providing a retention network to collect the carbonated water flow. Also disclosed are systems and apparatuses for practicing the disclosed methods.

Abstract: A gas infusion waste water treatment facility having an apparatus for increasing gas components in a fluid uses a controller connected to a network and client device for remote control of fluid flow rates, magnet field intensity, and pressure of fluid based on preset parameters. Conductive wire coiled around a magnet fluid treatment device generates a bidirectional magnetic flux to magnetically treat fluid in the conduit at an entry pressure. The facility creates absorption of increased gas concentration containing an oxygen atom into the fluid from 10% to at least 500%.

Abstract: The present invention provides an air purification device which cleans and purifies pollutants contained in air by using a spray liquid sprayed when air is transferred and, particularly, the air purification device can control the transfer speed of the air transferred in a transfer space so as to increase air purification efficiency.

Abstract: A semi-dry type electrostatic cyclone sampler includes a cyclone body, an insulate element, a discharge electrode, an air tube, an air introducing means, a discharging means and a flushing means. The insulate element is disposed at a top of the cyclone body and co-defines a cyclone chamber with the cyclone body. The discharging electrode is disposed on the insulate element. The air tube is disposed at a bottom of the cyclone body. The air introducing means is for introducing a particulate-containing air stream into the cyclone chamber. The discharging means is for charging the particulates so that the particulates can attach to an inside of the cyclone body. The flushing means is for flushing the inside of the cyclone body and collecting part of the particulates. When the discharging means activates, the air introducing means activates simultaneously. When the flushing means activates, the discharging means is deactivated.

Abstract: A method of forming a laminated film includes forming a silicon oxide film on a plurality of target objects loaded in a reaction chamber, and forming a silicon oxynitride film on the plurality of target objects by supplying a silicon source, an oxidizing agent and a nitride agent to the reaction chamber, wherein forming the silicon oxide film and forming the silicon oxynitride film are repeatedly performed for a predetermined number of times on the plurality of target objects to form a laminated film including the silicon oxynitride film and the silicon oxide film.

Abstract: This invention relates to an aerator that resides fully in the neck of a bottle or other liquid vessel. Through differential pressure, created through a venturi, the aerator mixes air with the fluid contained in the bottle. More specifically, the aerator can be used to mix air with wine as the bottle is inverted thus essentially instantly decanting the wine.

Abstract: A feed device for a distillation tower has an annular, open-bottomed channel located around the periphery of the feed zone of the tower with an inner wall spaced from the inner curved wall of the tower and a top covering the channel to confer a generally inverted-U shape to the cross section of the channel. One or more tangential feed inlets are provided to admit a heated, mixed phase feed to the tower and direct the feed into and along the channel. One or more vapor scoops are provided for each feed inlet with the scoop(s) located on the inner wall of the channel at a sufficient distance along the channel from the inlet to permit cyclonic separation of vapor and liquid before the vapor in the feed from the inlet enters the scoop(s) and passes through a vapor exit port into the central core of the tower.

Abstract: The present invention relates to a plan and a process for regenerating degraded heat transfer oil. The plant includes a distillation column for separating heavy components. The distillation column has an upper part and a lower part, the upper part having: a first inlet for receiving degraded oil, and a head having a first outlet for expelling light component vapor. The plant also includes a rectifier, for receiving the vapor, and having: an upper part having a second outlet for expelling light components; and a lower part having a third outlet for expelling regenerated oil. The distillation column further includes a fourth outlet for letting heavy components out in the lower part of the distillation column, a pressure transmitter at the first inlet, a pressure and temperature transmitter at the first outlet, temperature transmitters inside the distillation column, level switches, an automatic valve at the fourth outlet, and an electric resistance for maintaining the oil in a liquid state.

Abstract: A foaming mechanism configured to receive a plurality of streams of gas and generate a foamed liquid, having an aerodynamic component and an aerodynamic housing disposed around at least a portion of the aerodynamic component. The aerodynamic housing includes a plurality of first channels and a plurality of second channels connected to the plurality of first channels at regular intervals on a distributed plane. The distributed plane is about perpendicular to the plurality of first channels, wherein the plurality of first channels and the plurality of second channels are configured to transform an axial stream of the gaseous working agent into a plurality of radial high-speed streams of the gaseous working agent by channeling the gaseous working agent through the plurality of first channels and into the plurality of second channels on the distributed plane.

Abstract: Radon is removed from a gas in an apparatus comprising: (a) a liquid-contacting apparatus having a shielded reservoir containing a fresh working liquid in which radon is soluble; and (b) a means for causing a stream of gas containing radon to pass through the liquid-contacting apparatus. When the radon level in the working liquid reaches a certain level, the working liquid is either taken out of service and stored until the radon level is reduced or the working liquid is diluted with additional working liquid having no radon.

Abstract: An aqueous stream is pumped through a vortex cylinder. The aqueous stream is rotated in a downwardly moving spiral stream within the vortex cylinder at a high downward velocity. The downward velocity of the aqueous stream increases as it flows through a discharge conduit concentrically located within a mixing chamber of the vortex cylinder. An adjustable inlet tube open to atmospheric pressure extends through the vortex chamber and into the discharge conduit. A negative pressure zone is created at the discharge end of the discharge conduit for drawing fluid into the aqueous stream for mixing therewith and dissolving oxygen in the aqueous solution.

Abstract: An object is to provide a micro-bubble generator, etc., capable of efficiently generating bubbles having a particle size of a nanometer order. One aspect of the present invention is a micro-bubble generator provided with a swirl chamber, a fluid introduction opening connected to the swirl chamber, the fluid introduction opening for introducing fluid along a line tangent to an inner surface of the swirl chamber, and a discharge tube for guiding the fluid in the direction substantially perpendicular to the direction in which the fluid is introduced. The discharge tube penetrates a wall surface of the swirl chamber and protrudes to an interior of the swirl chamber. According to the present configuration, by isolating a path of the introduced fluid, a loss of kinetic energy of a swirl flow of the fluid can be reduced. Thus, the micro-bubble generator capable of reducing the size of the generated micro-bubbles can be obtained.

Abstract: A console humidifier includes a humidification unit having a top portion with an air outlet there through. A water reservoir is located at a bottom portion of the humidification unit, and includes an air inlet there through. A portion of the water reservoir extends through a back wall of the humidification unit and includes a water tank interface. A water tank is positionable on the water tank interface, where the water tank include support members for caring the load of the water tank. A wick element is located in the humidification unit, with only an end portion of the wick element being positioned in the reservoir. The wick element being positioned about the air inlet. A fan assembly is located in the top portion of the humidification unit, where the fan assembly is interposed between the wick element and the air outlet in the top portion of the humidification unit.

Abstract: Apparatus for dissipating a fragrance or malodor eliminator utilizes an infused disc which a user can place in either a rotating or a fixed position. The two states will dissipate a scent/malodor-eliminator at different rates. The disc is mounted on a shaft that secures the disc in an air stream. The shaft defines several positions at which the disc can be placed, as well as structures to retain the disc at a selected location along the shaft. The shaft is part of a support which includes a mechanism for securing the apparatus within the air stream. Air flow causes the disc to rotate and dissipate at one rate or to pass through a stationary disc at a second, lower rate, as a function of the position of the disc on the shaft. A method of imparting a scent or malodor eliminator to air is also disclosed.

Abstract: A device for the mixing of a gas into a liquid comprises a hollow frustum shape housing having a central axis, extended from a small diameter fluid outlet end, defining a fluid outlet opening, to a large diameter end; a liquid inlet port positioned adjacent the large diameter end is formed in said housing which allows delivery of pressurized liquid into said hollow housing, and a helically cut conical member is positioned and affixed within the hollow center of the housing with its axis aligned with that of the hollow frustum shape housing such that fluid delivered into the housing forms a swirling motion around the outside of the conical member as it passes from inlet port to outlet opening. The housing has a gas inlet for delivery of gas to the fluid within the frustum shaped housing at a position adjacent to the fluid outlet opening as the fluid moves from inlet to fluid outlet opening.

Abstract: Vapor-liquid contacting apparatuses and methods for removing contaminants from gas streams are provided. In an embodiment, a vapor-liquid contacting apparatus includes a vortex contacting stage having a contacting zone bound by a wall and defining an axis, a radially inner region surrounding the axis, and a radially outer region adjacent the wall. The vapor-liquid contacting apparatus also includes a feed conduit configured to direct flow of a feed gas into the radially outer region of the contacting zone in a direction tangential to the axis to form a vortex. Further, the vapor-liquid contacting apparatus includes a liquid conduit configured to deliver a liquid absorbent stream to the radially inner region in the contacting zone.

Abstract: The device is of the frustum dispersion type having a housing forming a conical cavity, sealed at its large end, tapering to a discharge orifice at the other end. There is a fluid inlet, which tangential to the cavity near the sealed end. There is a hollow, tapered helix cut cone shape in the center of the cavity, affixed to the sealed end, with the point thereof axially aligned with the discharge orifice to help enable the continuous swirling motion of the contained fluid and to act as a gas inlet port to start the formation of a gas vortex. As fluid in the cavity approaches the discharge orifice, it is accelerated because of the reduction of area inside the cavity as it tapers. The change in specific gravities between the fluid and the gas causes a swirling centrifugal force on the liquid and a centripetal inner swirling of the gas. The result is at the point of discharge, the fluid is heavily loaded with small bubbles of gas.

Abstract: An assembly for mixing liquid within a gas flow includes a hollow conduit that is configured for containing a flow of gas and liquid droplets. The assembly also includes multiple spaced blades and an impingement element. Each of the blades is operatively connected to and extends from the impingement element and is connected to an inner wall of the conduit. The impingement element is upstream of the blades in the flow of gas. The impingement element and the blades are configured to create a preferred distribution of the liquid droplets within the gas flow downstream of the blades within the conduit.

Abstract: This invention relates to a tubular cyclonic separation device the style of which was presented in PCT/ZA2003/000160 and which enables all of the inlet and outlet connections to be completely contained within a tubular profile, the diameter of which is that of the body of the cyclonic section. This disclosure adds further novel and inventive developments to the cyclonic device which enable it to be used as a separating device for systems involving all three phases (gas, liquid and solid) and where two, three or more different product streams may be separated, all within the same cylindrical profile. These further inventive developments also relate to the use of externally supplied gas and/or additional liquid phases which are injected through the walls of the cyclonic body using specifically located slots and/or holes in combination with specifically located stepped edges.

Abstract: A mixing system is provided. The mixing system includes a housing defining a boundary of a mixing conduit including an expansion section with an injector mount and a reductant diverter extending into the conduit upstream of the injector mount in the expansion section. The mixing system further includes an atomizer with openings positioned in the housing and a helical mixing element positioned in the housing.

Abstract: A liquid concentrator having an evaporator assembly and a cyclonic separator includes features designed to improve the performance of the liquid concentrator. A settling chamber is separated from a sump of the cyclonic separator. A liquid inlet opening into a mixing chamber of the evaporator injects wastewater at low pressures. Features to aid in the cleaning of the liquid concentrator include easy open doors and clean water injection ports for cleaning interior portions of the liquid concentrator.

Abstract: A liquid concentrator having an evaporator assembly and a cyclonic separator includes features designed to improve the performance of the liquid concentrator. A settling chamber is separated from a sump of the cyclonic separator. A liquid inlet opening into a mixing chamber of the evaporator injects wastewater at low pressures. Features to aid in the cleaning of the liquid concentrator include easy open doors and clean water injection ports for cleaning interior portions of the liquid concentrator. In one feature a settling tank is disposed below the cyclonic separator and has a width that is larger than the width of the cyclonic separator. In another variation, the cyclonic separator has a tubular body with an interior that is substantially unobstructed between an inlet from the evaporator assembly and an exhaust outlet. In yet another variation, the cyclonic separator has an upper chamber that is separated from a lower chamber.

Abstract: Device for absorption of at least one component chosen among gas and vapor in a liquid based on an ejector principle, comprising a mixing zone in the form of a substantially straight tube (5) immediately downstream of the ejector (1). The device comprises an ejector (1) with central liquid passage (2) and a substantially annular, sectioned aperture (4) for gas/vapor. The gas aperture (4) generally surrounds the central liquid passage (2) and the annular, sectioned aperture (4) for gas/vapor is designed in a manner to cause the gas/vapor to enter the mixing zone with a velocity component that is inclined to the periphery surface of the tube to thereby provide a helical flow (6) downstream of the ejector (1).

Abstract: A system for gasification of liquid fuel includes an absorber to receive liquid fuel and as through separate ports, a vortex reactor to create a vortex of the gas and fuel droplets to enhance absorption of gas into the fuel, and a recirculation loop to remove and recirculate unabsorbed gas and fuel vapors from the absorber back to its tangential inlet port. Gasified fuel collects at the bottom of the absorber for delivery to an engine.

Abstract: A method for the efficient solubilization of carbon dioxide in water through the use of high energy impacts is disclosed. The method can optionally includes mixing the carbon dioxide and water to form an annular dispersed flow, accelerating the carbon dioxide and water prior to the collision; providing a retention network to collect the carbonated water flow. Also disclosed are systems and apparatuses for practicing the disclosed methods.

Abstract: A method for the efficient solubilization of carbon dioxide in water through the use of high energy impacts is disclosed. The method can optionally includes mixing the carbon dioxide and water to form an annular dispersed flow, accelerating the carbon dioxide and water prior to the collision; providing a retention network to collect the carbonated water flow. Also disclosed are systems and apparatuses for practicing the disclosed methods.

Abstract: A device is provided for supplying gas into water, especially for aquaculture, including a water inlet arrangement with a pipe having a first plurality of openings and a Venturi type gas dissolver unit built in the pipe, and a surrounding second element having a second plurality of openings and/or a fixed or adjustable shield.

Abstract: A fine bubble generating apparatus that efficiently generates fine bubbles on the nanometer level. A cylindrical member has a cylindrical inner peripheral surface, a first end wall member closing one end of the cylindrical member, and a second end wall member closing the other end of the cylindrical member. The cylindrical member and the first and second end wall members define a fluid swirling chamber. The cylindrical member has a fluid inlet hole at a position close to the second end wall member to supply a gas-liquid mixed fluid in the tangential direction of the peripheral surface of the fluid swirling chamber. The second end wall member has a fluid outlet hole extending therethrough along the center axis of the inner peripheral surface of the fluid swirling chamber. The gas-liquid mixed fluid is introduced into the fluid swirling chamber at a position close to the second end wall member.

Abstract: A contact tray is provided with a tray deck and dividing walls which form groupings of one or more cans and one or more downcomer inlets distributed across the tray deck. The cans have walls that surround vapor openings in the tray deck that permit upward passage of a vapor stream into the cans. Downcomers extend downwardly from the downcomer inlet and are positioned for delivering a liquid stream into the center of cans positioned on a tray deck of an underlying contact tray. Discharge openings are provided in the walls of the cans to allow the liquid stream to exit the cans. The dividing walls direct the exiting liquid stream into the downcomer inlets in the same grouping and prevent or impede the liquid stream from flowing to a low side of the tray deck.

Abstract: A system for gasification of liquid fuel includes an absorber to receive liquid fuel and as through separate ports, a vortex reactor to create a vortex of the gas and fuel droplets to enhance absorption of gas into the fuel, and a recirculation loop to remove and recirculate unabsorbed gas and fuel vapors from the absorber back to its tangential inlet port. Gasified fuel collects at the bottom of the absorber for delivery to an engine.

Abstract: In a device for humidifying a gas flow, an atomized liquid is combined with a gas flow in a spray chamber, and passed through a generally U-shaped gas flow passage having a first generally vertical part 3 through which the atomized liquid and gas passes to a lower part 4. From there, the gas passes generally vertically upwardly to an outlet 9. The lower part of the passage incorporates an opening 6 to a water separator 7. The opening 6 is closable by a float device 10, or includes a flow restricting control valve 13.

Abstract: This invention is a dust removal system for dust gas which comprises at least an atomizer. The atomizer comprises an atomizing chamber and an atomizing mechanism; the atomizing chamber includes an inlet for the dust gas and an outlet for the gas after mixture; the atomizing mechanism comprises a water chamber, the first atomizing ball, the second atomizing ball, an umbrella-shaped atomizer, and a regulating mechanism; the water chamber includes the first and second water inlet and the first and second water outlet; the regulating mechanism adjusts the fit clearance between the first atomizing ball and the first water outlet, the fit clearance between the second atomizing ball and the second water outlet, and the flare angle of the umbrella surface of the umbrella-shaped atomizer. The beneficial effect is: the two-stage atomization—coordinating the atomizing balls and the water outlets, and using an umbrella-shaped atomizer—guarantees the atomizing effect.

Abstract: A drive system for driving a fan in a wet cooling tower, wherein the fan has a fan hub and fan blades attached to the fan hub. The drive system has a high-torque, low speed permanent magnet motor having a motor casing, a stator and a rotatable shaft, wherein the rotatable shaft is configured for connection to the fan hub. The drive system includes a variable frequency drive device to generate electrical signals that effect rotation of the rotatable shaft of the motor in order to rotate the fan.

Abstract: A device for the injection and mixing of steam into a fluid stream. The device is intended to be used in a substantially cylindrically-shaped primary conduit having a longitudinal axis and circular cross-section for carrying the fluid stream. The primary conduit is provided with an inlet for accepting the fluid stream and an outlet for discharging the fluid stream along the longitudinal axis. A secondary conduit is joined to the primary conduit for discharging steam within the fluid stream along the longitudinal axis. A biscuit element is provided of sintered tungsten having upstream and downstream circular faces sized to fit within the primary conduit along its interior wall having a geometric center coincident with the longitudinal axis and having a plurality of openings, each having a longitudinal axis parallel to the longitudinal axis of the primary conduit. Each opening is provided with a mixing element that induces a rotational angular velocity to the fluid stream passing therethrough.

Abstract: A micro-bubble generating device is provided which is capable of mixing or dispersing micro-bubbles into a liquid with high stability and has a simple structure that permits reduction of a cost of manufacture. A first member and a first packing are superposed on each other on one side of a gas-permeable film, while a second member and a second packing are superposed on each other on the other side of the gas-permeable film. A pressurized gas delivered via a gas inlet of the first member flows through a fluid passage of the first packing, permeates through the gas-permeable film, and is ejected as micro-bubbles into a liquid flowing through a fluid passage in the form of a narrow shallow strip-like groove provided in the second packing.

Abstract: A vapor distributor for use in atmospheric or vacuum columns includes a new design of vapor inlet device, or vapor horn, to provide superior mixing and distribution of a tangential first feed and a vertical second feed. New vapor inlet device has an inlet dividing the first feed into two portions, each flowing in respective housings in opposed circulation directions, and a plurality of vanes for redirection of vapor. Mixing and distribution of feeds by the vapor distributor is further enhanced by inclusion in vapor distributor of a mixer and vapor directing plates.

Abstract: A foam generating apparatus has a body with an inlet end at one end and an outlet end at the other end; a wind averaging piece contained in the body and adjacent to the inlet end, a buffer space being defined between the side of the wind averaging piece toward the inlet end and the inner edge of the inlet end, and the wind averaging piece being provided with a plurality of radially arranged through holes; and a porous body disposed in the body and abutting against the side of the wind averaging piece toward the outlet end, and a foam collecting chamber being defined between the porous body and the inner edge of the outlet end.

Abstract: This invention provides a fine bubble generating apparatus which can efficiently generate fine bubbles on the nanometer level. This apparatus includes a cylindrical member having a cylindrical inner peripheral surface, a first end wall member configured to close one end of the cylindrical member, and a second end wall member configured to close the other end of the cylindrical member. The cylindrical member and the first and second end wall members define a fluid swirling chamber. The cylindrical member has a fluid inlet hole at a position close to the second end wall member to supply a gas-liquid mixed fluid in the tangential direction of the peripheral surface of the fluid swirling chamber. The second end wall member has a fluid outlet hole extending therethrough along the center axis of the inner peripheral surface of the fluid swirling chamber. The gas-liquid mixed fluid is introduced into the fluid swirling chamber at a position close to the second end wall member.

Abstract: An apparatus constructed in a simple structure and capable of generating fine air bubbles and includes an apparatus body having a circular column-like internal space defined by a cylindrical inner surface and circular inner surfaces. At least one internal cylindrical member can be disposed within the internal space away from the cylindrical inner surface. A first fluid introduction section can inject a first fluid into a tubular space between the cylindrical inner surface and the internal cylindrical member toward a circumferential direction. A second fluid introduction section and a gas and liquid mixture discharge port can be disposed in the circular inner surfaces, respectively.

Abstract: The air disperser (1) includes an air inlet (2), a pipe (3) defining an air outlet area equipped with one or more atomizers (4), an outer wall (7) and a space (8) defined by the pipe wall (9) and the outer wall (7) of the air disperser. The space (8) has a plurality of guide vanes (10a-10l) positioned substantially vertically in the axial direction and substantially on the radii between the pipe wall (9) and the outer wall (7) of the air disperser. At least one (10e) of the guide vanes is covering at least 90% of the full radius from the pipe wall (9) in the direction towards the outer wall (7) of the air disperser, and the rest of said guide vanes being distributed on radii along the circumference of the pipe (3).