Abstract: A spiral type fluid mixer which enables mixing by a distribution of concentration or distribution of temperature in a flow direction of the fluid made uniform without unevenness and which is compact and enables easy piping work is provided. This spiral type fluid mixer is provided with a fluid inlet, a first flow path which is connected to the fluid inlet, a first spiral flow path which is connected to the first flow path, a plurality of branch flow paths which are branched from the first spiral flow path, a second spiral flow path to which the plurality of branch flow paths are connected, a second flow path which is connected to the second spiral flow path, and a fluid outlet which is connected to the second flow path, the plurality of branch flow path being branched from different positions of the first spiral flow path and being connected with the second spiral flow path at different positions of the second spiral flow path.

Abstract: Combinatorial processing including stirring is described, including defining multiple regions of a substrate, processing the multiple regions of the substrate in a combinatorial manner, introducing a fluid into a first aperture at a first end of a body to dispense the fluid out of a second aperture at a second end of the body and into one of the multiple regions, and agitating the fluid using an impeller at a second end of the body to facilitate interaction of the fluid with a surface of the substrate.

Abstract: An apparatus (10) for surface treating particulate material (M) with surface treatment particles (S) includes a substantially cylindrical body (12) having a top (18), bottom (16) and sidewall (14). A mixing chamber (42) is defined within the body (12). At least one injector inlet (36) and at least one process air inlet (32) are in communication with the mixing chamber (42). At least one outlet (34) is in fluid communication with the mixing chamber (42).

Abstract: A mixing device for mixing a first and second material together to create an output mixture. The device includes a first chamber containing the first material coupled to a mixing chamber defined between a rotor and a stator. The rotor is disposed inside the stator and rotates therein about an axis of rotation. The first chamber houses an internal pump configured to pump the first material from the first chamber into the mixing chamber. The pump may be configured to impart a circumferential velocity into the first material before it enters the mixing chamber. At least one of the rotor and stator have a plurality of through-holes through which the second material is provided to the mixing chamber. Optionally, a second chamber is coupled to the mixing chamber. The second chamber may house an internal pump configured to pump the output material from the mixing chamber into the second chamber.

Abstract: A method and apparatus for reconstituting consumable powder(s) with a liquid to provide a food liquid such as milk, cappuccino-type beverage, or soup with or without froth. The powder is introduced into a container and pre-wetted by an intersecting liquid spray. Further mixing occurs in the container. The container may have additional liquid streams feeding into the container for increased mixing. This food liquid can then be aspirated by the Venturi effect by steam generation to produce a frothed/aerated food liquid.

Abstract: The microreactor for mixing and discharging multiple raw material liquids is obtained by laminating: a base plate in which a raw material introducing fluid channel is formed; a raw material introducing plate; and a mixing fluid channel plate which is arranged between the base plate and the raw material introducing plate, and in which a mixing fluid channel is formed. The microreactor includes: a mixing fluid channel in the mixing fluid channel plate which is formed in the mixing fluid channel plate, and in which a flow is contracted in its width direction; and a mixing fluid channel in the base plate which is formed in the base plate, and which has a fluid channel cross-section which becomes larger in its depth direction as it goes downstream. The mixing fluid channel in the base plate communicates with the mixing fluid channel in the mixing fluid channel plate, and is connected to an outlet orifice from which to discharge the mixed liquids.

Abstract: In systems for treating wastewater liquid by utilizing aerobic biological species, the contaminated wastewater stream is pretreated in a dissolved air flotation system to remove suspended solid waste, including large particles such as fats, grease, and physically emulsified oils. The purified wastewater containing dissolved waste is thereafter gasified and further decontaminated in a bioreactor tank. Biological species in the bioreactor tank consume gas and perform bodily functions that converts dissolved waste into easily removable carbon dioxide and suspend solids. Gas consumed by the biological species is replenished by pumping the wastewater though a liquid-gas mixer. A controller regulates the speed of the pump based on real-time gas concentration measurements provided by a corresponding gas probe disposed within the wastewater in the bioreactor tank.

Abstract: A mixer system for mixing at least two fluids includes a plurality of micromixers that are fluidically connected in parallel. The micromixers are integrated into a guide matrix and are fluidically connected via feed lines for the fluids to be mixed.

Abstract: A system for forming mini microbubbles has a motor, a shaft attached to the motor, a displacer attached to the shaft for mixing a media with a liquid, a discharge plate positioned adjacent the displacer, a housing adjustably attached to the discharge plate, and a media chamber fluidly connected with the discharge plate. The motor rotates the shaft. The discharge plate has a discharge hole formed therein. The media chamber is fluidly connected to the discharge hole of the discharge plate. The discharge plate is positioned between the motor and the displacer. The displacer is positioned within the housing. The media chamber can be positioned between the motor and the discharge plate.

Abstract: A microfluidic device (10) for performing chemical or biological reactions comprises a chamber (20) for use as a self-sustaining oscillating jet mixing chamber and two or more separate feed channels (22, 24, 40) separated by one or more inter-channel walls (25), the two or more channels (22,24,40) terminating at a common side (18) of the chamber (20), the two or more channels (22,24,40) having a total channel width (28) comprising the widths of the two or more channels (22,24,40) and all inter-channel walls (25) taken together, the chamber (20) having a width (26) in a direction perpendicular to the channels (22,24,40) and a length (32) in a direction parallel to the channels, the width (26) being at least two times the total channel width (28), the chamber (20) having two opposing major surfaces (56) defining a height (30) thereof, the chamber (20) having a major-surface-area to volume ratio of at least 10 cm2/cm3.

Abstract: A method of and apparatus for feeding a chemical into a liquid flow are especially suited for use with a headbox of a paper machine, particularly for feeding a retention aid into a fiber suspension flow going to the headbox so that in a mixing apparatus feed liquid is added into the retention chemical solution, prior to introducing the solution into the fiber suspension flow guided to the paper machine. The feed liquid is preferably a circulation water from the paper mill, or another non-clean liquid from a paper mill.

Abstract: A gas processing device for mixing a first gas (H2) and a second gas (air) comprises a flow passage (110) through which the second gas (air) passes, an inflow port (104) for introducing the first gas (H2) in a non-parallel direction to the flow direction of the second gas (air) within the flow passage (110), and a housing (101) for sealing a part of the flow passage (110). The flow passage (110) comprises hole structures (111), through which the second gas (air) and first gas (H2) pass in and out, in at least a part of the region sealed by the housing (101). According to this constitution, the hole structures generate turbulence, and hence the degree of mixing between the first gas (H2) and second gas (air) can be improved, enabling a uniform reduction in the gas concentration.

Abstract: The present invention relates to drink-stirring device for stirring or mixing liquid and/or powdered ingredients with liquid in a drinking vessel (4), the liquid being supplied from above through the stirring device to an outlet tube which conducts at least one liquid jet towards the interior of the drinking vessel. The liquid is supplied through an outlet tube (64) which is rotatably attached to the device and is associated to an external, magnetic member (82). The electromagnet arrangement is arranged outside or at distance of the magnetic member for creating a variable magnetic field configured to move the tube (64) in rotation, so that the emerging liquid jet can be given a corresponding centrifugal effect.

Abstract: A micromixing chamber, roughly in the form of an hourglass, having a first outer end with a tangential inflow opening and a second outer end with a tangential outflow opening. The mixing chamber in the overall flow direction first narrows more or less gradually and subsequently widens more or less abruptly. The micromixer may be made at least partially of glass, or at least partially of a plurality of glass plates. A micromixer having a plurality of such micromixing chambers connected fluidically in series is also disclosed. Methods for manufacturing such a micromixing chamber of such a micromixer, as well as method for mixing by means of such a micromixing chamber or by means of such a micromixer, are disclosed.

Abstract: An apparatus (10) for surface treating particulate material (M) with surface treatment particles (S) includes a substantially cylindrical body (12) having a top (18), bottom (16) and sidewall (14). A mixing chamber (42) is defined within the body (12). At least one injector inlet (36) and at least one process air inlet (32) are in communication with the mixing chamber (42). At least one outlet (34) is in fluid communication with the mixing chamber (42).

Abstract: An object of the present invention is to provide a process for producing a mixture of a two-liquid mixing type curable resin, which process is hard to generate curing unevenness, can be carried out with low energy consumption, and is suited for mixing even with a disposable static mixer. The present invention provides a process for producing a mixture of a two-liquid mixing type curable resin by mixing the constituents of the resin, wherein mixing operations of the constituents are performed multiple times and a non-mixing time is provided between at least one of the mixing operations and another one of the mixing operations subsequent thereto.

Abstract: A system is disclosed herein for treating wastewater liquid by utilizing aerobic biological species. The contaminated wastewater stream is pretreated in a dissolved air flotation system to remove suspended solid waste, including large particles such as fats, grease, and physically emulsified oils. The purified wastewater containing dissolved waste is thereafter oxygenated and further decontaminated in a bioreactor tank. Biological species in the bioreactor tank consume oxygen and perform bodily functions that converts dissolved waste into easily removable carbon dioxide and suspend solids. Oxygen consumed by the biological species is replenished by pumping the wastewater though a liquid-oxygen mixer. A controller regulates the speed of the pump based on real-time oxygen concentration measurements provided by a corresponding oxygen probe disposed within the wastewater in the bioreactor tank.

Abstract: A dust-free mixing system for use with drilling fluids having a jet ring adapter. The dust-free mixing system can have an eductor. The eductor can have a housing with an axial bore for receiving a first suction induction port. The first suction induction port is for receiving a first dry component. The eductor can have a second suction induction port for receiving a second dry component. The eductor can further have a third suction induction port for receiving a third dry component.

Abstract: The invention relates to a vortex mixer comprising a mixing chamber having an axial outlet and at least one inlet which is at least substantially tangential. The mixer further comprises a residence chamber extending axially on the side of the mixing chamber opposite from the axial outlet.

Abstract: Methods and fluid delivery systems mix fluids together. A blender of the system receives and blends at least two chemical compounds together for delivery to one or more vessels, tanks or process tools, such as chemical baths that facilitate processing (e.g., cleaning) of semiconductor wafers or other components. A first fluid enters into a bore of a mixing chamber of the blender through an aperture in a wall of the chamber to enable blending of the first fluid with a second fluid injected into a central region of the bore.

Abstract: A portable disinfectant transfer system for transferring a toxic and/or noxious fluid between a container and a reprocessor reservoir includes a container for containing the fluid, a pump having a conduit for drawing the fluid from the reservoir and expelling the fluid through an opening of the conduit into the container and an opening in the container for receiving a neutralizing chemical into the container simultaneously with the expelling of the fluid from the reservoir into the container to provide a simultaneously introduced neutralizing chemical. The opening of the conduit is positioned to produce a swirling motion of the fluid within the container to mix the simultaneously introduced neutralizing chemical with the fluid while the fluid is expelled into the container. A further pump having a further conduit is provided for drawing the fluid out of the container.

Abstract: The present invention relates to a device for mixing fluids. It is a hydraulic or pneumatic apparatus, depending on the fluid used for transportation. It is static and has the characteristics of both an extractor and a fluid mixer. Extraction is effected by dragging the suction elements, by means of the circulation of a transporting fluid injected at low pressure. The injection inlets (5 or 6) and suction inlets (6 or 5) are interchangeable and lead to a single outlet (3). The injection tube (1) formed by a helical spiral on the outside surrounded by the sheath (4) increases the pressure in the transporting fluid and creates outward helical movement with centrifugal force in all the fluid that circulates on the outside.

Abstract: A mixing device for mixing a first and second material together to create an output mixture. The device includes a first chamber containing the first material coupled to a mixing chamber defined between a rotor and a stator. The rotor is disposed inside the stator and rotates therein about an axis of rotation. The first chamber houses an internal pump configured to pump the first material from the first chamber into the mixing chamber. The pump may be configured to impart a circumferential velocity into the first material before it enters the mixing chamber. At least one of the rotor and stator have a plurality of through-holes through which the second material is provided to the mixing chamber. Optionally, a second chamber is coupled to the mixing chamber. The second chamber may house an internal pump configured to pump the output material from the mixing chamber into the second chamber.

Abstract: A dust-free mixing system for use with drilling fluids. The dust-free mixing system can have an eductor. The eductor can have a housing with an axial bore for receiving a first suction induction port. The first suction induction port is for receiving a first dry component. The eductor can have a second suction induction port for receiving a second dry component.

Abstract: A mixer system for mixing at least two fluids includes a plurality of micromixers that are fluidically connected in parallel. The micromixers are integrated into a guide matrix and are fluidically connected via feed lines for the fluids to be mixed.

Abstract: The present invention relates to drink-stirring device for stirring or mixing liquid and/or powdered ingredients with liquid in a drinking vessel (4), the liquid being supplied from above through the stirring device to an outlet tube which conducts at least one liquid jet towards the interior of the drinking vessel. The liquid is supplied through an outlet tube (64) which is rotatably attached to the device and is associated to an external, magnetic member (82). The electromagnet arrangement is arranged outside or at distance of the magnetic member for creating a variable magnetic field configured to move the tube (64) in rotation, so that the emerging liquid jet can be given a corresponding centrifugal effect.

Abstract: The present invention discloses an apparatus for processing materials, which is used to process the materials introduced thereinto, comprising a working part and a driving part, wherein the working part comprises, in cylindrical form, a first element and a second element arranged within the first element, and a containing chamber for storing materials to be processed being formed by the gap between the first element and the second element, and the second element is driven by the driving part to rotate relatively to the first element, and on the surface of the second element toward the containing chamber, provided is a disturbing part capable of producing axial forces in a direction parallel to the axis of the first element.

Abstract: A liquid homogenizing unit comprising a feed flow channel (56), a discharge flow channel (57), a first intermediate flow channel (58) communicating with the feed flow channel (56), and a second intermediate flow channel (55) communicating will the first intermediate flow channel (58) and discharge flow channel (57). The first intermediate flow channel (58) extends in a direction which crosses the second intermediate flow channel (55).

Abstract: In the fluid mixing method, a plurality of fluids are distributed through respective independent supply flow channels to come into confluence in a mixing field in microspace to mix with each other to form a mixed fluid, and the mixed fluid is discharged from the mixing field through a discharge flow channel. The fluid mixing method includes: a dividing step of dividing at least one of fluids to distribute; a flow contracting step of contracting the fluids after the dividing step immediately prior to confluence to the mixing field; a confluence step of bringing the contracted fluids into confluence so as to intersect at one point in the mixing field to mix the fluids; and a discharge step of discharging the mixed fluid from the mixing field.

Abstract: A novel mixing apparatus and process for mixing at least two fluids are disclosed. Excellent mixing and superior pressure drop characteristics are achieved in a device comprising at least two supply channels to feed a mixing chamber and create a vortex. The alignment of the supply channels is such that fluids are introduced into the chamber at both tangential and radial directions. In the case of gas/liquid mixing, particularly advantageous is the injection of the liquid stream tangentially and the gas stream radially. When two liquid streams are mixed, it is desirable to distribute them into fine, interdigitated channels prior to introduction into a supply channel and finally into the chamber. The mixed stream is generally withdrawn from the center of the swirling vortex and in a direction perpendicular to the plane of the vortex.

Abstract: A post-mix beverage dispenser includes a jet, in fluid communication with a source of non-carbonated diluent, extending into a mixing chamber of the dispenser. The jet includes an aperture, typically in a sidewall thereof, configured to spray the diluent towards the wall of the mixing chamber. A diffuser is disposed below the jet. The diffuser may be in fluid communication with a concentrate dispensing outlet so as to emit concentrate into the mixing chamber. The diluent and concentrate collide in the mixing chamber to create a frothed beverage.

Abstract: Submerged jet nozzles are located at equal distances from the center of a tank containing a quantity of liquid and solids. Some of the nozzles induce flow partly inward and some induce flow partly outward, but all mixers are directed generally in the same circumferential direction. The inward directed nozzles are located close to the bottom of the tank and direct liquid across the central portion of the tank where solids tend to accumulate. Upper nozzles direct flow at least partly outward but in the same circumferential direction as the lower nozzles. The flow from the upper nozzles tends to reflect off the wall of the tank in addition to inducing a rotational flow of substantially the entire body of liquid in the tank.

Abstract: Described is a mixing device for mixing a gaseous stream of a fuel and an oxidant that has a cylindrical mixing chamber, means for injecting a gaseous stream of the fuel tangentially along the inner surface of the wall of the mixing chamber, and means for injecting a stream of the oxidant axially along the central longitudinal axis of the mixing chamber, wherein the diameter of the mixing chamber and the dimensions and location of the means for injecting the fuel and the oxidant are such that the tangentially injected stream of the fuel forms a wall jet around the axially injected stream of the oxidant without impinging upon the other stream. A reactor for the partial oxidation of a hydrocarbonaceous fuel containing the mixing device and to a process for the catalytic partial oxidation of a hydrocarbonaceous fuel using the mixing device is further described.

Abstract: The invention relates to a method for conveying a solid (2) in a conveying medium (15), said solid (2) being delivered to a container (5) with outlet (7). The solid (2) is in this case dispersed in the transport liquid (15) without the aid of any mechanically driven parts and is introduced into the conduit (4).

Abstract: The present invention relates to methods and apparatus for separation of solids from liquids and separation of liquids from liquids (such as oil from water) by dissolved gas floatation. A dissolved gas floatation clarifier is described as is a liquid-gas mixer, a liquid-liquid mixer, and solid-liquid chemical feeders. The methods and apparatus of the present invention are particularly suitable for supplying dissolved air and mixing of chemicals for use in separation of solids in dissolved air floatation clarifiers.

Abstract: A post-mix beverage dispenser includes a diluent jet directed at a wall of a mixing chamber thereof such that a swirling descending mass of diluent is formed. A concentrate dispensing outlet ejects concentrate into the swirling mass of diluent causing turbulent mixing of the diluent and the concentrate to create a frothed or whipped beverage. Instead of creating a swirling mass of diluent, the diluent jet and concentrate dispensing outlet may be oriented substantially directly at one another such that the streams of concentrate and diluent collide causing a turbulent mixing of the diluent and the concentrate.

Abstract: A method and apparatus for treating fluids includes a vortex nozzle assembly having improved vortex nozzles. The overall system and system layout, which includes an elbow design, are improved as well as vortex system methods. The vortex nozzle assembly includes an access port and methods for measuring physical properties at the fluid flows. A frame assembly provides support for the vortex system.

Abstract: An apparatus is provided for separation of suspended solid particles from fluids, for separation and mixing of fluids, and for dissolving gases in aqueous fluids. The apparatus employs a grooved ring to divide the fluid stream and impart a high velocity on each of the divided or sub-streams. A grooved ring with any number of grooves that may be spiral in shape is used to create a high velocity circular motion on a divided stream for separation of suspended solid particles by centrifugal force in a cyclone filter and for saturation of liquid with gases in a fluid mixer where gases are introduced through a diffuser. A grooved ring with any number of grooves that may be radial is used in a fluid mixer to divide a stream of fluid, produce a high velocity flow through each groove, introduce a second fluid through an orifice into the first fluid flowing through each groove, and direct the fluid mixture to a center impact zone where the various streams collide to complete the mixing.

Abstract: A method and apparatus for treating fluids includes a vortex nozzle assembly having improved vortex nozzles. The overall system and system layout, which includes an elbow design, are improved as well as vortex system methods. The vortex nozzle assembly includes an access port and methods for measuring physical properties at the fluid flows. A frame assembly provides support for the vortex system.

Abstract: An apparatus is provided for separation of suspended solid particles from fluids, for separation and mixing of fluids, and for dissolving gases in aqueous fluids. The apparatus employs a grooved ring to divide the fluid stream and impart a high velocity on each of the divided or sub-streams. A grooved ring with any number of grooves that may be spiral in shape is used to create a high velocity circular motion on a divided stream for separation of suspended solid particles by centrifugal force in a cyclone filter and for saturation of liquid with gases in a fluid mixer where gases are introduced through a diffuser. A grooved ring with any number of grooves that may be radial is used in a fluid mixer to divide a stream of fluid, produce a high velocity flow through each groove, introduce a second fluid through an orifice into the first fluid flowing through each groove, and direct the fluid mixture to a center impact zone where the various streams collide to complete the mixing.

Abstract: A method and apparatus for treating fluids includes a vortex nozzle assembly having improved vortex nozzles. The overall system and system layout, which includes an elbow design, are improved as well as vortex system methods. The vortex nozzle assembly includes an access port and methods for measuring physical properties at the fluid flows. A frame assembly provides support for the vortex system.

Abstract: To optimally mix treatment additives to a contaminated liquid, treatment additives are selected. A mixing energy requirement of the contaminated liquid and treatment additives is then determined by mixing the treatment additives over a range of time and mixing speeds, and measuring turbidity to determine the mixing time and speed which results in the lowest turbidity. A low mixing energy requirement requires a lower mixing time and mixing speed than a higher mixing energy requirement. The contaminated liquid and selected treatment additives are then directed into a mixing system including at least one hydrocyclone. Each hydrocyclone has an inlet aspect ratio, a barrel length and diameter selected based upon the mixing energy requirement determination. Altering the aspect ratio, diameter, and length of the hydrocyclone results in different mixing speeds and mixing time, which can be optimized for the given contaminated liquid and treatment additives.

Abstract: A system for controlling the cooling of small milk quantities in a cooling tank (4). An agitation pipe (2) extended through a regular milk outlet (26) in a first end wall (6) of the tank is provided, having a nozzle end (32) for introducing incoming/re-circulated milk onto a milk cooling surface (14) at a predetermined position (dp). The position (dp) being situated (1) between a first end wall (6) and a central part of the tank (4) and laterally displaced (b) relative to the perpendicular central axis of the tank. The nozzle end (32) is directed towards a second end wall (8) of the tank (4). Agitation is performed by the agitation pipe (2) upon demand or when the milk quantity is insufficient for a regular agitator element (27) to work properly.

Abstract: In one embodiment, a mixing device includes a nozzle that is disposed tangent to a wall of a chamber. Gas flowing from the nozzle rotates in the chamber forming a vortex. Another gas may be flown near a middle portion of the chamber, thereby uniformly mixing the two gases. In another embodiment, an evaporation and mixing device includes a nozzle configured to impart rotation to a gas flowing into a chamber. An injector flows a liquid material near a middle portion of the chamber, thereby mixing the gas and the liquid material. A heater may be employed to help evaporate the liquid material.

Abstract: The invention relates to a method for mixing at least two fluids, wherein the fluids are introduced as adjacent fluid lamellae into a swirl chamber, forming a fluid spiral flowing inward. Removal of the resulting mixture is carried out from the center of the fluid spiral. The static micromixer has a mixing chamber in the form of a swirl chamber (6), in which the inlet channels (15a, b, 16a, b) discharge in such a way that the fluid lamellae enter in the form of fluid jets forming a fluid spiral (50) flowing inward. At least one outlet (25) is fluidically connected to the swirl chamber (6) for removing the resulting mixture.

Abstract: A novel mixing apparatus and process for mixing at least two fluids are disclosed. Excellent mixing and superior pressure drop characteristics are achieved in a device comprising at least two supply channels to feed a mixing chamber and create a vortex. The alignment of the supply channels is such that fluids are introduced into the chamber at both tangential and radial directions. In the case of gas/liquid mixing, particularly advantageous is the injection of the liquid stream tangentially and the gas stream radially. When two liquid streams are mixed, it is desirable to distribute them into fine, interdigitated channels prior to introduction into a supply channel and finally into the chamber. The mixed stream is generally withdrawn from the center of the swirling vortex and in a direction perpendicular to the plane of the vortex.

Abstract: A magnetohydrodynamic fluidic system mixes a first substance and a second substance. A first substrate section includes a first flow channel and a first plurality of pairs of spaced electrodes operatively connected to the first flow channel. A second substrate section includes a second flow channel and a second plurality of pairs of spaced electrodes operatively connected to the second flow channel. A third substrate section includes a third flow channel and a third plurality of pairs of spaced electrodes operatively connected to the third flow channel. A magnetic section and a control section are operatively connected to the spaced electrodes.

Abstract: A method of and apparatus for feeding a chemical into a liquid flow are especially suited for use with a headbox of a paper machine, particularly for feeding a retention aid into a fiber suspension flow going to the headbox so that in a mixing apparatus feed liquid is added into the retention chemical solution, prior to introducing the solution into the fiber suspension flow guided to the paper machine. The feed liquid is preferably a circulation water from the paper mill, or another non-clean liquid from a paper mill.

Abstract: A method for mixing a plurality of gases including forming a helical flow within a mixing vessel thereby allowing simplification of construction, avoiding pressure drop to the fullest possible extent, and expediting the mixture lest the volume of a gas within the explosion limits should increase, and an apparatus to be used for the method.

Abstract: A novel mixing apparatus and process for mixing at least two fluids are disclosed. Excellent mixing and superior pressure drop characteristics are achieved in a device comprising at least two supply channels to feed a mixing chamber and create a vortex. The alignment of the supply channels is such that fluids are introduced into the chamber at both tangential and radial directions. In the case of gas/liquid mixing, particularly advantageous is the injection of the liquid stream tangentially and the gas stream radially. When two liquid streams are mixed, it is desirable to distribute them into fine, interdigitated channels prior to introduction into a supply channel and finally into the chamber. The mixed stream is generally withdrawn from the center of the swirling vortex and in a direction perpendicular to the plane of the vortex.