EP0759806B1 - Device for mixing two fluids - Google Patents

Device for mixing two fluids Download PDF

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Publication number
EP0759806B1
EP0759806B1 EP95915124A EP95915124A EP0759806B1 EP 0759806 B1 EP0759806 B1 EP 0759806B1 EP 95915124 A EP95915124 A EP 95915124A EP 95915124 A EP95915124 A EP 95915124A EP 0759806 B1 EP0759806 B1 EP 0759806B1
Authority
EP
European Patent Office
Prior art keywords
tube
nozzles
fluids
guide channel
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95915124A
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German (de)
French (fr)
Other versions
EP0759806A1 (en
Inventor
Edward Shafik Gaddis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Products and Chemicals Inc
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Air Products and Chemicals Inc
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Publication date
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Publication of EP0759806A1 publication Critical patent/EP0759806A1/en
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Publication of EP0759806B1 publication Critical patent/EP0759806B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
    • B01F25/211—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers the injectors being surrounded by guiding tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
    • B01F23/23231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
    • B01F23/454—Mixing liquids with liquids; Emulsifying using flow mixing by injecting a mixture of liquid and gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/23—Mixing by intersecting jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/75—Flowing liquid aspirates gas

Definitions

  • the invention relates to a device according to the Preamble of claim 1.
  • Fluids in the sense of the invention are liquids and gases.
  • the device can be used for mixing a liquid with a gas or to mix two insoluble in each other Liquids or for mixing or homogenizing two mutually soluble liquids can be used.
  • the following explanations apply, representative of the other two ways of mixing one Liquid with a gas.
  • Such “mixing” is used, for example, at Wastewater treatment carried out when as much oxygen as possible to be introduced into the water, which is bad in water is soluble. It is the same for chemical purposes Reactions as well as absorption and desorption processes between a gas and a liquid required one large mass transfer area between the two fluids to generate high turbulence. The exchange of materials between the This intensifies gas and the liquid.
  • the invention is based, for the beginning described device a structurally simple structure specify.
  • This device is in one piece with tube and guide channel executed. It can be manufactured in a compact design and is therefore easy to use. This allows the Device in addition to its direct use as Mixing device, for example, as a diving unit for large-volume liquid containers are used.
  • the guide channel is simply designed because of its structure the existing wall of the pipe is used. It therefore only need the second walls of the Guide channel outside or inside the pipe positioned and firmly connected to the pipe.
  • the device according to the Invention further for mixing a liquid with a Gas described.
  • the device can also not soluble for mixing two into each other Liquids or for homogenizing two into each other soluble liquids can be used.
  • a gas GS and a liquid FL together be mixed.
  • the largest possible Amount of oxygen is introduced into the FL.
  • the bottom - two nozzles 2 and 3 are arranged, which on the one hand the FL and on the other hand the GS.
  • the nozzles 2 and 3 are arranged so that the out of them escaping jets of liquid and gas in guide channels 4 and 5 a guiding device, which in turn has two diametrically opposite points in the tube 1 flow into.
  • the tube 1 is including the guide channels 4 and 5 and the nozzles 2 and 3 in a large-volume container 6 used in the liquid, for example Sewage is located.
  • the device can, for example, according to FIGS. 2 and 3 be built.
  • this embodiment of the device are two curved, closed walls 7 on the outside of the tube 1 and 8 attached, each forming an axial running cavity on both axial edges firmly with the Wall of the tube 1 are connected.
  • the walls 7 and 8 are 3 on the end faces of their ends 9 and 10 locked.
  • the nozzles 2 protrude at the other, open ends and 3 in from the walls 7 and 8 and the wall of the tube 1 enclosed cavities.
  • Walls 7 and 8 form together with the wall of the tube 1 Guide device, which are explained here from those in FIG. 1 Guide channels 4 and 5 exist.
  • In the area of the ends 9 and 10 of the Walls 7 and 8 is the wall of tube 1, respectively breached.
  • the corresponding holes 11 and 12 in the Wall of the tube 1 are each in Fig. 3 by two Dashes indicated.
  • Pipe 1 and walls 7 and 8 exist for example made of plastic or metal.
  • the walls 7 and 8 can be bent semicircularly according to FIG. 2 be. They then suitably consist of half tubes.
  • walls 7 and 8 can also be bent in a U-shape Hollow profiles are used.
  • the guide channels 4 and 5 run essentially parallel to Vessel 1.
  • the two in the guide channels 4 and 5 separated guided jets of liquid and gas meet in tube 1 in a impact zone PZ with a dashed border.
  • the Nozzles 2 and 3 suck liquid or a gas-liquid mixture from the area of the lower end of the pipe 1 and thereby ensure a through the in Fig. 1st drawn arrows indicated internal circuit.
  • the FL is the tube 1 from above or in external circulation, for example by means of a pump 13. After The liquid can be separated from an overflow 14 from the Drain container 6. The excess gas can come from the Device partly through the pipe 1 and partly through the container 6 emerge.
  • nozzles 2 and 3 are shown. But it can also more than two separate nozzles be used.
  • the nozzles 2 and 3 are preferably as Two-substance nozzles made from two concentric tubes. she are preferred in terms of geometry and dimensions identically constructed, so that the tube 1 two or more uniform flows of liquid and gas are supplied. If more than two nozzles are used, then the Junction points of the corresponding guide channels are useful evenly offset on the circumference of the tube 1. At there are three nozzles between the confluence points for example, an angle of 120 °.
  • the device according to FIGS. 1 to 4 basically works as follows:
  • An FL and a GS are separated by means of nozzles 2 and 3 fed. Due to the shear field of the FL to the The gas GS becomes outlet openings of the nozzles 2 and 3 dispersed. The gas bubbles are taken away by the FL and the resulting two-substance mixture bounces in two flows the impact zone PZ on each other. The gas bubbles are thereby further dispersed so that an increased mass transfer takes place. A large part of the gas bubbles remains in the Impact zone PZ in limbo and is constantly widening dispersed. This leads to a further increase in Mass exchange.
  • the impact zone PZ is from this Basically as centrally as possible in the vessel 1, that is to say approximately in it Center.
  • the lower part of the tube 1 also concentrically from a distance be surrounded by the same pipe section.
  • the nozzles 2 and 3 then open into an annulus.
  • the corresponding Guide device is from the outside through the pipe section and inside again limited by the wall of the tube 1. Since the Breakthrough of the tube 1 at the level of the impact zone PZ is circumferential, the lower part of the tube 1 is appropriate connected to the concentric pipe section. You can do this for example, schematically indicated webs 15 are used be fixed to the lower part of the tube 1 and the Pipe piece are connected. The pipe section is in turn fixed and all around tight with the upper part of the tube 1 connected. In this case, the guiding device is ring-shaped.
  • the tube 1 On the one hand and the pipe section, on the other hand, delimits the walls of the Represent guidance device.
  • the Device more than two nozzles are expediently used. Four are preferably circumferential by 90 ° each offset nozzles used. The number of nozzles is also arbitrary here.
  • the nozzles can be arranged so that their Radial body in the guide device protrude into it.
  • the structure of such a nozzle is shown in 5 shows an enlarged illustration, for example.
  • she consists of a tube 16, the one in its peripheral surface Has nozzle opening 17.
  • the FL fed through the pipe 16 is deflected in this way by about 90 °, so that it is in the Guide device of the tube 1 can occur, which by the 5 indicated walls 1 and 7 is limited.
  • the GS is a thinner tube in the tube 16 of the nozzle 18 integrated, the outlet opening 19 at the nozzle opening 17 lies.
  • the nozzle body of the nozzles can also in protrude axially into the guide device.
  • the device described in the foregoing can be used as such can be used directly, for example, for wastewater treatment. But it can also, as already described for Fig. 1, in one large-volume container 6 can be used as a diving unit. There is the possibility of several such Use devices at the same time, as for three Devices A, B and C emerge from Fig. 6. That has the Advantage that the device with optimal compact Dimensions can be made regardless of the Use case. It will only be the number required used by devices as diving units.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accessories For Mixers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Nozzles (AREA)

Abstract

Proposed is a device for mixing two fluids at least one of which is a liquid. The device has a tubular vessel (1), open at both ends, to hold the fluids, at least two spatially separated nozzles (3, 4) to feed in the fluids and a feed device into one end of which the nozzles (3, 4) project. The other end of the feed device is connected to an opening at approximately the middle of the tubular vessel (1) within which an impact zone (PZ) is located at this point, the fluid streams injected into the feed device by the nozzles (3, 4) impacting against each other in this zone when they emerge from the feed device. The feed device, which is rigidly joined to the tubular vessel (1), has at least two walls forming a cavity between them and is open at the two ends. One of the walls of the feed device is the wall of the tubular vessel (1).

Description

Die Erfindung bezieht sich auf eine Vorrichtung gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a device according to the Preamble of claim 1.

"Fluide" im Sinne der Erfindung sind Flüssigkeiten und Gase. Die Vorrichtung kann für das Mischen einer Flüssigkeit mit einem Gas oder zum Mischen zweier ineinander nicht löslicher Flüssigkeiten oder zum Mischen bzw. Homogenisieren von zwei ineinander löslichen Flüssigkeiten verwendet werden. Die folgenden Ausführungen gelten, stellvertretend auch für die beiden anderen Möglichkeiten, für das Mischen einer Flüssigkeit mit einem Gas."Fluids" in the sense of the invention are liquids and gases. The device can be used for mixing a liquid with a gas or to mix two insoluble in each other Liquids or for mixing or homogenizing two mutually soluble liquids can be used. The following explanations apply, representative of the other two ways of mixing one Liquid with a gas.

Ein solches "Mischen" wird beispielsweise bei der Abwasserreinigung durchgeführt, wenn möglichst viel Sauerstoff in das Wasser eingebracht werden soll, der in Wasser schlecht löslich ist. Hierzu ist es ebenso wie bei chemischen Reaktionen sowie bei Absorptions- und Desorptionsvorgängen zwischen einem Gas und einer Flüssigkeit erforderlich, eine große Stoffaustauschfläche zwischen den beiden Fluiden bei hoher Turbulenz zu erzeugen. Der Stoffaustausch zwischen dem Gas und der Flüssigkeit wird dadurch intensiviert.Such "mixing" is used, for example, at Wastewater treatment carried out when as much oxygen as possible to be introduced into the water, which is bad in water is soluble. It is the same for chemical purposes Reactions as well as absorption and desorption processes between a gas and a liquid required one large mass transfer area between the two fluids to generate high turbulence. The exchange of materials between the This intensifies gas and the liquid.

Mit der bekannten Vorrichtung nach der DE 38 18 991 C1 wird der Stoffaustausch beim Mischen der Fluide weiter verbessert. Durch das Scherfeld der Flüssigkeit im unmittelbaren Bereich hinter den Öffnungen der Düsen wird das Gas beim Austritt aus den Düsen in sehr kleine Blasen zerteilt. Gleichzeitig saugt jeder aus den Düsen austretende Flüssigkeitsstrahl vom Inneren des Gefäßes Flüssigkeit oder ein Gas-Flüssigkeitsgemisch an. Es bilden sich dadurch hinter den Düsen homogene Zweiphasenströmungen aus. Die beiden Zweiphasenströmungen werden so gelenkt, daß sie in der Prallzone innerhalb des Gefäßes zusammenprallen. Dort werden die Gasblasen weiter zerteilt und die kinetische Energie des strömenden Gas-Flüssigkeitsgemisches dissipiert. Dadurch werden eine hohe Turbulenz und eine große Stoffaustauschfläche in der Prallzone sowie in den übrigen Teilen des Gefäßes oberhalb und unterhalb der Prallzone erzeugt.With the known device according to DE 38 18 991 C1 the mass transfer when mixing the fluids is further improved. Through the shear field of the liquid in the immediate area behind the openings of the nozzles the gas is released divided the nozzles into very small bubbles. Sucks at the same time every jet of liquid emerging from the nozzles from the inside liquid or a gas-liquid mixture. This creates homogeneous behind the nozzles Two-phase flows. The two two-phase flows are directed so that they are in the impact zone within the Collide the vessel. The gas bubbles continue there divided and the kinetic energy of the flowing gas-liquid mixture dissipates. This will be a high Turbulence and a large mass transfer area in the impact zone and in the other parts of the vessel above and below the impact zone.

Der Erfindung liegt die Aufgabe zugrunde, für die eingangs geschilderte Vorrichtung einen konstruktiv einfachen Aufbau anzugeben.The invention is based, for the beginning described device a structurally simple structure specify.

Diese Aufgabe wird gemäß dem kennzeichnenden Merkmal des Patentanspruchs 1 gelöst.This task is carried out according to the characteristic feature of Claim 1 solved.

Diese Vorrichtung ist mit Rohr und Leitkanal einteilig ausgeführt. Sie kann in kompakter Bauweise hergestellt werden und ist daher einfach zu handhaben. Dadurch kann die Vorrichtung neben ihrer direkten Verwendung als Mischvorrichtung beispielsweise auch als Tauchaggregat für großvolumige Flüssigkeitsbehälter eingesetzt werden.This device is in one piece with tube and guide channel executed. It can be manufactured in a compact design and is therefore easy to use. This allows the Device in addition to its direct use as Mixing device, for example, as a diving unit for large-volume liquid containers are used.

Der Leitkanal ist einfach gestaltet, da für seinen Aufbau die ohnehin vorhandene Wandung des Rohres ausgenutzt wird. Es brauchen daher nur die jeweils zweiten Wände des Leitkanals außerhalb oder innerhalb des Rohres positioniert und fest mit dem Rohr verbunden zu werden.The guide channel is simply designed because of its structure the existing wall of the pipe is used. It therefore only need the second walls of the Guide channel outside or inside the pipe positioned and firmly connected to the pipe.

Dabei kann für jede in der Vorrichtung eingesetzte Düse eine Art eigenes Leitrohr angebracht werden. Es ist jedoch auch möglich, einen ringförmigen Leitkanal mit entsprechend hoher Anzahl von Düsen vorzusehen.One can be used for each nozzle used in the device Kind of own guide tube to be attached. However, it is also possible to use an annular guide channel accordingly to provide a large number of nozzles.

Weitere vorteilhafte Ausgestaltungen der Erfindung gehen aus den Unteransprüchen hervor.Further advantageous embodiments of the invention are based the subclaims.

Ausführungsbeispiele des Erfindungsgegenstandes sind in den Zeichnungen dargestellt.Embodiments of the subject matter of the invention are in the Drawings shown.

Es zeigen:

  • Fig. 1 eine Vorrichtung nach der Erfindung in schematischer Darstellung.
  • Fig. 2 eine Draufsicht auf die Vorrichtung.
  • Fig. 3 eine Seitenansicht der Vorrichtung.
  • Fig. 4 eine gegenüber Fig. 2 abgewandelte Ausführungsform der Vorrichtung.
  • Fig. 5 eine in der Vorrichtung verwendbare Düse in vergrößerter Darstellung.
  • Fig. 6 einen Anwendungsfall für die Vorrichtung.
    • Show it:
  • Fig. 1 shows a device according to the invention in a schematic representation.
  • Fig. 2 is a plan view of the device.
  • Fig. 3 is a side view of the device.
  • Fig. 4 shows a modified embodiment of the device compared to FIG. 2.
  • Fig. 5 is a nozzle usable in the device in an enlarged view.
  • Fig. 6 shows an application for the device.

    • In der folgenden Beschreibung wird die Vorrichtung nach der Erfindung weiter für das Mischen einer Flüssigkeit mit einen Gas beschrieben. In gleicher Weise kann die Vorrichtung aber auch für das Mischen zweier ineinander nicht löslicher Flüssigkeiten oder für das Homogenisieren zweier ineinander löslicher Flüssigkeiten verwendet werden.In the following description, the device according to the Invention further for mixing a liquid with a Gas described. In the same way, the device can also not soluble for mixing two into each other Liquids or for homogenizing two into each other soluble liquids can be used.

    In einem an beiden axialen Enden offenen Rohr 1, das vorzugsweise als langgestreckter Zylinder ausgebildet ist, sollen ein Gas GS und eine Flüssigkeit FL miteinander gemischt werden. Dabei soll beispielweise eine möglichst große Menge von Sauerstoff in die FL eingebracht werden. An einem Ende des Rohres 1 - im dargestellten Ausführungsbeispiel ist es das untere - sind zwei Düsen 2 und 3 angeordnet, denen einerseits die FL und andererseits das GS zugeführt werden. Die Düsen 2 und 3 sind dabei so angeordnet, daß die aus ihnen austretenden Strahlen aus Flüssigkeit und Gas in Leitkanäle 4 und 5 einer Leitvorrichtung gelangen, die ihrerseits an zwei einander diametral gegenüber liegenden Stellen in das Rohr 1 einmünden. Das Rohr 1 ist einschließlich der Leitkanäle 4 und 5 sowie der Düsen 2 und 3 in einen großvolumigen Behälter 6 eingesetzt, in dem sich als Flüssigkeit beispielsweise Abwasser befindet.In a tube open at both axial ends 1, which is preferably designed as an elongated cylinder is a gas GS and a liquid FL together be mixed. For example, the largest possible Amount of oxygen is introduced into the FL. On one End of the tube 1 - is in the illustrated embodiment it the bottom - two nozzles 2 and 3 are arranged, which on the one hand the FL and on the other hand the GS. The nozzles 2 and 3 are arranged so that the out of them escaping jets of liquid and gas in guide channels 4 and 5 a guiding device, which in turn has two diametrically opposite points in the tube 1 flow into. The tube 1 is including the guide channels 4 and 5 and the nozzles 2 and 3 in a large-volume container 6 used in the liquid, for example Sewage is located.

    Die Vorrichtung kann beispielweise entsprechend den Fig. 2 und 3 aufgebaut sein. Bei dieser Ausführungsform der Vorrichtung sind an dem Rohr 1 außen zwei gebogene, geschlossene Wände 7 und 8 angebracht, die jeweils unter Bildung eines axial verlaufenden Hohlraums an beiden axialen Kanten fest mit der Wandung des Rohres 1 verbunden sind. Die Wände 7 und 8 sind gemäß Fig. 3 an den Stirnseiten ihrer Enden 9 und 10 verschlossen. An den anderen, offenen Enden ragen die Düsen 2 und 3 in die von den Wänden 7 und 8 sowie der Wandung des Rohres 1 umschlossenen Hohlräume hinein. Die Wände 7 und 8 bilden zusammen mit der Wandung des Rohres 1 die Leitvorrichtung, die hier aus den bei Fig. 1 erläuterten Leitkanälen 4 und 5 besteht. Im Bereich der Enden 9 und 10 der Wände 7 und 8 ist die Wandung des Rohres 1 jeweils durchbrochen. Die entsprechenden Löcher 11 und 12 in der Wandung des Rohres 1 sind in Fig. 3 jeweils durch je zwei Striche angedeutet. Rohr 1 und Wände 7 und 8 bestehen beispielweise aus Kunststoff oder Metall.The device can, for example, according to FIGS. 2 and 3 be built. In this embodiment of the device are two curved, closed walls 7 on the outside of the tube 1 and 8 attached, each forming an axial running cavity on both axial edges firmly with the Wall of the tube 1 are connected. The walls 7 and 8 are 3 on the end faces of their ends 9 and 10 locked. The nozzles 2 protrude at the other, open ends and 3 in from the walls 7 and 8 and the wall of the tube 1 enclosed cavities. Walls 7 and 8 form together with the wall of the tube 1 Guide device, which are explained here from those in FIG. 1 Guide channels 4 and 5 exist. In the area of the ends 9 and 10 of the Walls 7 and 8 is the wall of tube 1, respectively breached. The corresponding holes 11 and 12 in the Wall of the tube 1 are each in Fig. 3 by two Dashes indicated. Pipe 1 and walls 7 and 8 exist for example made of plastic or metal.

    Die Wände 7 und 8 können gemäß Fig. 2 halbkreisförmig gebogen sein. Sie bestehen dann zweckmäßig aus Halbrohren. Für die Wände 7 und 8 können gemäß Fig. 4 aber auch U-förmig gebogene Hohlprofile eingesetzt werden.The walls 7 and 8 can be bent semicircularly according to FIG. 2 be. They then suitably consist of half tubes. For the According to FIG. 4, walls 7 and 8 can also be bent in a U-shape Hollow profiles are used.

    Die Leitkanäle 4 und 5 verlaufen im wesentlichen parallel zum Gefäß 1. Die beiden in den Leitkanälen 4 und 5 getrennt geführten Strahlen aus Flüssigkeit und Gas treffen im Rohr 1 in einer gestrichelt umrandeten Prallzone PZ aufeinander. Die Düsen 2 und 3 saugen Flüssigkeit oder ein Gas-Flüssigkeitsgemisch aus dem Bereich des unteren Endes des Rohres 1 an und sorgen dadurch für einen durch die in Fig. 1 eingezeichneten Pfeile angedeuteten internen Kreislauf. Die FL wird dem Rohr 1 von oben oder im externen Umlauf, beispielsweise mittels einer Pumpe 13 zugeführt. Nach Entmischung kann die Flüssigkeit aus einem Überlauf 14 aus dem Behälter 6 ablaufen. Das überschüssige Gas kann aus der Vorrichtung teilweise durch das Rohr 1 und teilweise durch den Behälter 6 austreten.The guide channels 4 and 5 run essentially parallel to Vessel 1. The two in the guide channels 4 and 5 separated guided jets of liquid and gas meet in tube 1 in a impact zone PZ with a dashed border. The Nozzles 2 and 3 suck liquid or a gas-liquid mixture from the area of the lower end of the pipe 1 and thereby ensure a through the in Fig. 1st drawn arrows indicated internal circuit. The FL is the tube 1 from above or in external circulation, for example by means of a pump 13. After The liquid can be separated from an overflow 14 from the Drain container 6. The excess gas can come from the Device partly through the pipe 1 and partly through the container 6 emerge.

    In Fig. 1 sind zwei Düsen 2 und 3 dargestellt. Es können aber auch mehr als zwei jeweils voneinander getrennte Düsen eingesetzt werden. Die Düsen 2 und 3 sind vorzugsweise als Zweistoffdüsen aus zwei konzentrischen Rohren ausgeführt. Sie sind bezüglich Geometrie und Abmessungen vorzugsweise identisch aufgebaut, so daß dem Rohr 1 zwei oder mehr gleichmäßige Ströme aus Flüssigkeit und Gas zugeführt werden. Wenn mehr als zwei Düsen verwendet werden, dann werden die Einmündungsstellen der entsprechenden Leitkanäle zweckmäßig gleichmäßig am Umfang des Rohres 1 versetzt angeordnet. Bei drei Düsen liegt zwischen den Einmündungsstellen also beispielsweise jeweils ein Winkel von 120°.In Fig. 1, two nozzles 2 and 3 are shown. But it can also more than two separate nozzles be used. The nozzles 2 and 3 are preferably as Two-substance nozzles made from two concentric tubes. she are preferred in terms of geometry and dimensions identically constructed, so that the tube 1 two or more uniform flows of liquid and gas are supplied. If more than two nozzles are used, then the Junction points of the corresponding guide channels are useful evenly offset on the circumference of the tube 1. At there are three nozzles between the confluence points for example, an angle of 120 °.

    Die Vorrichtung nach den Fig. 1 bis 4 arbeitet grundsätzlich wie folgt:The device according to FIGS. 1 to 4 basically works as follows:

    Mittels der Düsen 2 und 3 werden eine FL und ein GS getrennt zugeführt. Infolge des Scherfeldes der FL an den Austrittsöffnungen der Düsen 2 und 3 wird das Gas GS dispergiert. Die Gasblasen werden von der FL mitgenommen und das so entstandene Zweistoffgemisch prallt in zwei Strömen in der Prallzone PZ aufeinander. Die Gasblasen werden dadurch weiter dispergiert, so daß ein erhöhter Stoffaustausch stattfindet. Ein großer Teil der Gasblasen bleibt in der Prallzone PZ in der Schwebe und wird dadurch ständig weiter dispergiert. Das führt zu einer weiteren Erhöhung des Stoffaustausches. Die Prallzone PZ befindet sich aus diesem Grunde möglichst zentral im Gefäß 1, also etwa in dessen Mitte.An FL and a GS are separated by means of nozzles 2 and 3 fed. Due to the shear field of the FL to the The gas GS becomes outlet openings of the nozzles 2 and 3 dispersed. The gas bubbles are taken away by the FL and the resulting two-substance mixture bounces in two flows the impact zone PZ on each other. The gas bubbles are thereby further dispersed so that an increased mass transfer takes place. A large part of the gas bubbles remains in the Impact zone PZ in limbo and is constantly widening dispersed. This leads to a further increase in Mass exchange. The impact zone PZ is from this Basically as centrally as possible in the vessel 1, that is to say approximately in it Center.

    In einer gegenüber den Ausführungsformen nach den Fig. 2 bis 4 anderen Ausführungsform der Vorrichtung kann der untere Teil des Rohres 1 auch von einem mit Abstand konzentrisch zu demselben verlaufenden Rohrstück umgeben sein. Die Düsen 2 und 3 münden dann in einen Ringraum. Die entsprechende Leitvorrichtung wird von außen durch das Rohrstück und innen wieder durch die Wandung des Rohres 1 begrenzt. Da die Durchbrechung des Rohres 1 in Höhe der Prallzone PZ dann auch umlaufend ist, wird der untere Teil des Rohres 1 zweckmäßig mit dem konzentrischen Rohrstück verbunden. Dazu können beispielsweise schematisch angedeutete Stege 15 verwendet werden, die fest mit dem unteren Teil des Rohres 1 und dem Rohrstück verbunden sind. Das Rohrstück ist seinerseits fest und umlaufend dicht mit dem oberen Teil des Rohres 1 verbunden. Die Leitvorrichtung ist in diesem Fall also ringförmig ausgebildet. Sie wird durch das Rohr 1 einerseits und das Rohrstück andererseits begrenzt, welche die Wände der Leitvorrichtung darstellen. Bei dieser Ausführungsform der Vorrichtung werden zweckmäßig mehr als zwei Düsen eingesetzt. Vorzugsweise werden vier um jeweils 90° in Umfangsrichtung gegeneinander versetzte Düsen verwendet. Die Anzahl der Düsen ist aber auch hier beliebig.In comparison to the embodiments according to FIGS. 2 to 4 another embodiment of the device, the lower part of the tube 1 also concentrically from a distance be surrounded by the same pipe section. The nozzles 2 and 3 then open into an annulus. The corresponding Guide device is from the outside through the pipe section and inside again limited by the wall of the tube 1. Since the Breakthrough of the tube 1 at the level of the impact zone PZ is circumferential, the lower part of the tube 1 is appropriate connected to the concentric pipe section. You can do this for example, schematically indicated webs 15 are used be fixed to the lower part of the tube 1 and the Pipe piece are connected. The pipe section is in turn fixed and all around tight with the upper part of the tube 1 connected. In this case, the guiding device is ring-shaped. It is through the tube 1 on the one hand and the pipe section, on the other hand, delimits the walls of the Represent guidance device. In this embodiment the Device more than two nozzles are expediently used. Four are preferably circumferential by 90 ° each offset nozzles used. The number of nozzles is also arbitrary here.

    Die Düsen können gemäß Fig. 1 so angeordnet sein, daß ihre Körper in radialer Richtung in die Leitvorrichtung hineinragen. Der Aufbau einer derartigen Düse geht in vergrößerter Darstellung beispielweise aus Fig. 5 hervor. Sie besteht aus einem Rohr 16, das in seiner Umfangsfläche eine Düsenöffnung 17 aufweist. Die durch das Rohr 16 zugeführte FL wird auf diese Weise um etwa 90° umgelenkt, so daß sie in die Leitvorrichtung des Rohres 1 eintreten kann, welche durch die in Fig. 5 angedeuteten Wände 1 und 7 begrenzt wird. Für die Zuführung des GS ist in dem Rohr 16 der Düse ein dünneres Rohr 18 integriert, dessen Austrittsöffnung 19 an der Düsenöffnung 17 liegt. Die Düsenkörper der Düsen können aber auch in axialer Richtung in die Leitvorrichtung hineinragen.1, the nozzles can be arranged so that their Radial body in the guide device protrude into it. The structure of such a nozzle is shown in 5 shows an enlarged illustration, for example. she consists of a tube 16, the one in its peripheral surface Has nozzle opening 17. The FL fed through the pipe 16 is deflected in this way by about 90 °, so that it is in the Guide device of the tube 1 can occur, which by the 5 indicated walls 1 and 7 is limited. For the Feeding the GS is a thinner tube in the tube 16 of the nozzle 18 integrated, the outlet opening 19 at the nozzle opening 17 lies. The nozzle body of the nozzles can also in protrude axially into the guide device.

    Die im Vorangehenden beschriebene Vorrichtung kann als solche direkt beispielweise zur Abwasserbehandlung eingesetzt werden. Sie kann aber auch, wie schon für Fig. 1 beschrieben, in einem großvolumigen Behälter 6 als Tauchaggregat verwendet werden. Dabei bietet sich die Möglichkeit, mehrere solcher Vorrichtungen gleichzeitig einzusetzen, so wie es für drei Vorrichtungen A, B und C aus Fig. 6 hervorgeht. Das hat den Vorteil, daß die Vorrichtung mit optimalen kompakten Abmessungen hergestellt werden kann, ohne Rücksicht auf den Anwendungsfall. Es wird lediglich die jeweils benötigte Anzahl von Vorrichtungen als Tauchaggregate eingesetzt.The device described in the foregoing can be used as such can be used directly, for example, for wastewater treatment. But it can also, as already described for Fig. 1, in one large-volume container 6 can be used as a diving unit. There is the possibility of several such Use devices at the same time, as for three Devices A, B and C emerge from Fig. 6. That has the Advantage that the device with optimal compact Dimensions can be made regardless of the Use case. It will only be the number required used by devices as diving units.

    Claims (6)

    1. A plunged device for mixing two fluids, of which at least one is a liquid, comprising a tube (1) open on both axial ends for holding the fluids, at least two nozzles (2, 3) for supplying the fluids and a guide channel (4, 5) which is limited by walls, into which nozzles (2, 3) on its one end project and which ports with its other end into the tube (1), and in which the tube (1) at the level of the porting in the central area of said guide channel (4, 5) surrounds an impact zone (PZ) in which the fluid streams injected by the nozzles (2,3) and emerging from said guide channel (4, 5) impact against one another,
      characterized in that
      at least one wall of said guide channel (4, 5) is formed by a part of the wall of said tube (1).
    2. A device according to claim 1, characterized in that said guide channel comprises at least two hollow spaces limited by semi-tubes which are disposed outside of the tube (1) and connected to its wall.
    3. A device according to claim 1, characterized in that the guide channel comprises at least two hollow spaces, each of which is limited by U-shaped hollow profiles being disposed outside of said tube (1) and connected to its wall.
    4. A device according to claim 1, characterized in that the guide channel comprises a piece of tube concentric to said tube and supported thereon.
    5. A device according to one claim 1 to 4, characterized in that in the nozzles (2, 3) a tube (18) for supplying a gas as one of the fluids is integrated.
    6. Use of a device according to one of the claims 1 to 5 as an immersion aggregate for a liquid container (6) of large volume.
    EP95915124A 1994-05-26 1995-03-31 Device for mixing two fluids Expired - Lifetime EP0759806B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    DE4418287A DE4418287C2 (en) 1994-05-26 1994-05-26 Device for mixing two fluids
    DE4418287 1994-05-26
    PCT/DE1995/000451 WO1995032795A1 (en) 1994-05-26 1995-03-31 Device for mixing two fluids

    Publications (2)

    Publication Number Publication Date
    EP0759806A1 EP0759806A1 (en) 1997-03-05
    EP0759806B1 true EP0759806B1 (en) 1998-09-30

    Family

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    Application Number Title Priority Date Filing Date
    EP95915124A Expired - Lifetime EP0759806B1 (en) 1994-05-26 1995-03-31 Device for mixing two fluids

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    US (1) US5798061A (en)
    EP (1) EP0759806B1 (en)
    JP (1) JP3672923B2 (en)
    KR (1) KR100319284B1 (en)
    CN (1) CN1072976C (en)
    AU (1) AU2212995A (en)
    BR (1) BR9507689A (en)
    CA (1) CA2189998C (en)
    CZ (1) CZ286481B6 (en)
    DE (3) DE4418287C2 (en)
    ES (1) ES2123244T3 (en)
    MX (1) MX9605815A (en)
    NO (1) NO319891B1 (en)
    PL (1) PL177300B1 (en)
    WO (1) WO1995032795A1 (en)

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    CN1094381C (en) * 1998-07-14 2002-11-20 社团法人高等技术研究院研究组合 Material mixing apparatus using acoustic resonance
    EP1116517A1 (en) * 1999-06-29 2001-07-18 Sumitomo Metal Industries, Ltd. Method of dissolving water-soluble gas in sea for isolation into deep sea, device therefor, laying method for device
    US6273402B1 (en) * 2000-01-10 2001-08-14 Praxair Technology, Inc. Submersible in-situ oxygenator
    FR2838067B1 (en) * 2002-04-04 2005-02-04 Toulouse Inst Nat Polytech METHOD OF CONTACTING PHASES, IN PARTICULAR GAS / LIQUID, REACTOR RELATED TO MULTIDIRECTIONAL IMPACTS, AND APPLICATION TO OXIDIZING WATER TREATMENT
    SE525113C2 (en) * 2003-04-08 2004-11-30 Tetra Laval Holdings & Finance Method and apparatus for continuous mixing of two streams
    CN100364656C (en) * 2005-02-05 2008-01-30 中国石油化工股份有限公司 Impact flow reactor for liquid-phase reaction
    US8544827B1 (en) 2009-04-28 2013-10-01 Nested Nozzle Mixers, Inc. Nested nozzle mixer
    CN103071444B (en) * 2013-01-30 2014-12-10 北京工商大学 Gas-liquid reaction device
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    Also Published As

    Publication number Publication date
    CN1154078A (en) 1997-07-09
    PL177300B1 (en) 1999-10-29
    JPH10503968A (en) 1998-04-14
    CN1072976C (en) 2001-10-17
    MX9605815A (en) 1998-05-31
    NO965010L (en) 1996-11-25
    PL317347A1 (en) 1997-04-01
    DE4418287C2 (en) 1996-04-11
    US5798061A (en) 1998-08-25
    CA2189998A1 (en) 1995-12-07
    DE19580560D2 (en) 1998-07-02
    JP3672923B2 (en) 2005-07-20
    EP0759806A1 (en) 1997-03-05
    KR970703194A (en) 1997-07-03
    WO1995032795A1 (en) 1995-12-07
    KR100319284B1 (en) 2002-04-22
    CZ345296A3 (en) 1997-05-14
    CA2189998C (en) 2004-09-14
    NO965010D0 (en) 1996-11-25
    DE4418287A1 (en) 1995-12-07
    DE59503792D1 (en) 1998-11-05
    CZ286481B6 (en) 2000-04-12
    BR9507689A (en) 1997-10-07
    AU2212995A (en) 1995-12-21
    ES2123244T3 (en) 1999-01-01
    NO319891B1 (en) 2005-09-26

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