EP0376008A1 - Gas introducing system - Google Patents

Gas introducing system Download PDF

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Publication number
EP0376008A1
EP0376008A1 EP89122476A EP89122476A EP0376008A1 EP 0376008 A1 EP0376008 A1 EP 0376008A1 EP 89122476 A EP89122476 A EP 89122476A EP 89122476 A EP89122476 A EP 89122476A EP 0376008 A1 EP0376008 A1 EP 0376008A1
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EP
European Patent Office
Prior art keywords
container
gas
nozzle
medium
nozzles
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Granted
Application number
EP89122476A
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German (de)
French (fr)
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EP0376008B1 (en
Inventor
Reinhard Dipl.-Ing. Strigl
Manfred Dr.-Ing. Rossmann
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Linde GmbH
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Linde GmbH
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Priority to AT89122476T priority Critical patent/ATE86140T1/en
Publication of EP0376008A1 publication Critical patent/EP0376008A1/en
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Publication of EP0376008B1 publication Critical patent/EP0376008B1/en
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    • 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
    • B01F23/238—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using vibrations, electrical or magnetic energy, radiations
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/406—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles with gas supply only at the bottom
    • B01F33/4062—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles with gas supply only at the bottom with means for modifying the gas pressure or for supplying gas at different pressures or in different volumes at different parts of the bottom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71755—Feed mechanisms characterised by the means for feeding the components to the mixer using means for feeding components in a pulsating or intermittent manner

Definitions

  • the invention relates to a device for introducing gas into a flowable medium, which is located in a container.
  • Such gas entry systems are widely used.
  • fumigation candles which are arranged on the bottom of a treatment basin, are used for introducing oxygen-containing gas into waste water.
  • gas entry systems for purging molten metals in a pan.
  • steel melts or aluminum melts are aftertreated by purging with inert gas.
  • the gas is blown onto the melts via lances or introduced from below through nozzles or plugs from the bottom of the pan.
  • it is important to introduce the gas into the flowable medium as finely as possible.
  • media with high density, eg metal melts a fine-bubble entry with the conventional gas entry system is not guaranteed. Due to the high density of the medium, the originally small gas bubbles combine directly behind the gas introduction device to form a large one, which, for example, worsens the purging effect when post-treating a molten metal.
  • the present invention is therefore based on the object of designing a device of the type mentioned at the outset in such a way that a fine-bubble gas input is achieved in a simple and economical manner.
  • the floor nozzles emit gas pulsating into the medium essentially in a vertical upward direction. As high-frequency gas pulsation as possible ensures that the gas bubbles tear off in small dimensions. A conglomeration of small gas bubbles to large ones is prevented. Flutter valves, fast-acting solenoid valves, motor-operated ball valves or other fast-opening and closing valves can be used to pulsate the gas. The valves are arranged immediately before the gas enters the floor nozzles.
  • At least one nozzle is preferably additionally arranged such that its outlet opening points in a substantially horizontal direction which includes an angle with the container wall which is equal to or greater than 0 ° and is less than 90 °.
  • the gas can be blown into the flowable medium in such a way that the medium is set in rotation about the vertical cylinder or pan axis.
  • the gas bubbles in the rotating medium experience shear forces that prevent large gas bubbles from forming.
  • the nozzle is expediently arranged such that its outlet opening points in a substantially horizontal direction, which encloses an angle of approximately 0 ° to approximately 30 ° with the container wall.
  • the nozzle is preferably installed on the container wall or in the immediate vicinity of the container wall in the container such that the outlet opening is immersed in the medium.
  • the medium can be easily rotated by blowing in gas, on the other hand, there are no disruptive nozzles in the inside of the container.
  • a plurality of nozzles are attached in the container along the container wall in such a way that their outlet openings point essentially parallel to the container wall.
  • the container can be designed, for example, as an aeration tank for wastewater treatment or as a pan for post-treatment of a molten metal.
  • the nozzle with a nozzle head made of porous material, on the one hand to ensure a fine-bubble gas entry and on the other hand to be armed against high thermal loads caused by the hot molten metal.
  • a porous stone with directed porosity is preferably used.
  • the floor nozzles are also preferably provided with nozzle heads made of porous material.
  • the nozzle is connected to a pressure line for highly compressed gas.
  • the application can be continuous or pulsating.
  • the floor nozzles are also connected to pressure lines for highly compressed gas.
  • the quick-opening and closing valves mentioned are arranged in the pressure lines immediately before the floor nozzles.
  • the gas introduction system according to the invention is particularly suitable for use in so-called ladle metallurgy, that is to say when post-treating metal in the ladle.
  • ladle metallurgy that is to say when post-treating metal in the ladle.
  • the invention can also be used in wastewater treatment, for example in order to introduce oxygen into the wastewater in fine bubbles.
  • the gas entry system according to the invention can also be used to advantage when stripping liquids in wastewater technology, food technology or the chemical industry.
  • the gas feed system according to the invention also has the decisive advantage of not having to move mechanically moving parts. This represents a significant advantage over stirring systems, which cannot be used in steel treatment, for example, because of the high density of the molten steel.
  • the figure shows a pan for post-treatment of molten steel.
  • molten steel 2 which is to be treated by purging with nitrogen.
  • Nozzles 4 with nozzle heads 5 made of porous stone are arranged on the pan shell 3.
  • the porous stone has a directed porosity.
  • the nozzles 4 are arranged such that the outlet openings of the nozzle heads 5 are directed essentially parallel to the pan jacket 3.
  • the nozzles 4 are charged with highly compressed nitrogen gas via a pressure line (not shown).
  • the nozzles 4 blow the gas into the molten steel so that it is rotated around the vertical pan axis.
  • nitrogen gas is pulsed into the molten steel from below.
  • the floor nozzles 7 are connected to pressure lines (not shown) for highly compressed nitrogen gas. Immediately in front of the floor nozzles 7, fast-acting solenoid valves are arranged in the pressure lines, which allow a pulsating gas input.
  • the floor nozzles 7 are designed as porous plug stones with directed porosity in order to prevent blockages by the molten steel.
  • the pulsating gas input ensures that the gas bubbles tear off in a small expansion when they come into contact with the rotating steel melt and are carried along by the rotating steel melt. A conglomeration of the small gas bubbles to large ones is prevented.

Abstract

The invention relates to a gas introduction system for introducing gas into a flowable medium in a vessel 1. To enable the gas to be introduced in the form of the finest bubbles possible, it is proposed to provide bottom nozzles 7 on the vessel bottom 6 for the introduction of gas into the medium, which nozzles are connected to quick-opening and -closing valves. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Eintragen von Gas in ein fließfähiges Medium, das sich in einem Behälter befindet.The invention relates to a device for introducing gas into a flowable medium, which is located in a container.

Derartige Gaseintragssysteme sind weit verbreitet. So werden beispielsweise zum Eintragen von sauerstoffhal­tigem Gas in Abwasser Begasungskerzen verwendet, die am Boden eines Behandlungsbeckens angeordnet sind. Andererseits ist es auch bekannt, Gaseintragssysteme zum Spülen von Metallschmelzen in einer Pfanne zu verwenden. Beispielsweise werden Stahlschmelzen oder Aluminiumschmelzen durch Spülen mit Inertgas nachbehan­delt. Dabei wird das Gas über Lanzen auf die Schmelzen aufgeblasen oder durch Düsen oder Stopfen vom Boden der Pfanne aus von unten eingetragen. In den meisten Anwen­dungsfällen kommt es auf ein möglichst feinblasiges Eintragen des Gases in das fließfähige Medium an. Ins­besondere bei Medien mit hoher Dichte, z.B. Metall­schmelzen, ist ein feinblasiger Eintrag mit dem herkömm­lichen Gaseintragssystem aber nicht gewährleistet. Aufgrund der hohen Dichte des Mediums vereinigen sich unmittelbar hinter der Gaseintragsvorrichtung die ursprünglich kleinen Gasblasen zu einer großen, wodurch beispielsweise beim Nachbehandeln einer Metallschmelze die Spülwirkung verschlechtert wird.Such gas entry systems are widely used. For example, fumigation candles, which are arranged on the bottom of a treatment basin, are used for introducing oxygen-containing gas into waste water. On the other hand, it is also known to use gas entry systems for purging molten metals in a pan. For example, steel melts or aluminum melts are aftertreated by purging with inert gas. The gas is blown onto the melts via lances or introduced from below through nozzles or plugs from the bottom of the pan. In most applications, it is important to introduce the gas into the flowable medium as finely as possible. Especially with media with high density, eg metal melts, a fine-bubble entry with the conventional gas entry system is not guaranteed. Due to the high density of the medium, the originally small gas bubbles combine directly behind the gas introduction device to form a large one, which, for example, worsens the purging effect when post-treating a molten metal.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art so auszugestalten, daß einfache und wirtschaftliche Weise ein feinblasiger Gaseintrag erreicht wird.The present invention is therefore based on the object of designing a device of the type mentioned at the outset in such a way that a fine-bubble gas input is achieved in a simple and economical manner.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß auf dem Behälterboden Bodendüsen zum Eintragen von Gas in das Medium angeordnet sind, die mit schnellöffnenden und -schließenden Ventilen in Verbindung stehen.This object is achieved in that floor nozzles for introducing gas into the medium are arranged on the tank bottom, which are connected to quick-opening and closing valves.

Die Bodendüsen geben Gas im wesentlichen in vertikaler Richtung nach oben pulsierend in das Medium ab. Durch eine möglichst hochfrequente Gaspulsation wird erreicht, daß die Gasblasen in kleiner Ausdehnung abreißen. Eine Konglomerierung kleiner Gasblasen zu großen wird verhindert. Zur Pulsierung des Gases können Flatterventile, schnellarbeitende Magnetventile, mit Motor angetriebene Kugelhähne oder anderweitig schnell öffnende und schließende Ventile verwendet werden. Die Ventile sind unmittelbar vor dem Gaseintritt in die Bodendüsen angeordnet.The floor nozzles emit gas pulsating into the medium essentially in a vertical upward direction. As high-frequency gas pulsation as possible ensures that the gas bubbles tear off in small dimensions. A conglomeration of small gas bubbles to large ones is prevented. Flutter valves, fast-acting solenoid valves, motor-operated ball valves or other fast-opening and closing valves can be used to pulsate the gas. The valves are arranged immediately before the gas enters the floor nozzles.

Bei einer zylinder- oder pfannenförmigen Ausbildung des Behälters mit im wesentlichen vertikaler Achse ist vorzugsweise zusätzlich mindestens eine Düse so angeordnet, daß ihre Austrittsöffnung in eine im wesentlichen horizontale Richtung zeigt, die mit der Behälterwand einen Winkel einschließt, der gleich oder größer als 0° und kleiner als 90° ist.In the case of a cylindrical or pan-shaped design of the container with a substantially vertical axis, at least one nozzle is preferably additionally arranged such that its outlet opening points in a substantially horizontal direction which includes an angle with the container wall which is equal to or greater than 0 ° and is less than 90 °.

Auf diese Weise kann das Gas so in das fließfähige Medium eingeblasen werden, daß das Medium in eine Rotation um die vertikale Zylinder- bzw. Pfannenachse versetzt wird. Die in das rotierende Medium eingetragenen Gasblasen erfahren Scherkräfte, die ein Entstehen von großen Gasblasen verhindern.In this way, the gas can be blown into the flowable medium in such a way that the medium is set in rotation about the vertical cylinder or pan axis. The gas bubbles in the rotating medium experience shear forces that prevent large gas bubbles from forming.

Es ist vorteilhaft, das Gas nahezu parallel zur Behälter­wand in das fließfähige Medium einzublasen, um dieses in Rotation zu versetzen. Hierzu ist die Düse zweckmäßiger­weise so angeordnet, daß ihre Austrittsöffnung in eine im wesentlichen horizontale Richtung zeigt, die mit der Be­hälterwand einen Winkel von ca. 0° bis ca. 30° einschließt.It is advantageous to blow the gas into the flowable medium almost parallel to the container wall in order to set it in rotation. For this purpose, the nozzle is expediently arranged such that its outlet opening points in a substantially horizontal direction, which encloses an angle of approximately 0 ° to approximately 30 ° with the container wall.

Vorzugsweise ist die Düse an der Behälterwand oder in un­mittelbarer Nähe der Behälterwand im Behälter so instal­liert, daß die Austrittsöffnung in das Medium eintaucht. Durch diese Anordnung kann einerseits das Medium durch Einblasen von Gas leicht in Rotation versetzt werden, an­dererseits stehen dem rotierenden Medium keine störenden Düsen im Behälterinneren im Wege. In einer besonders vor­teilhaften Ausführungsform werden mehrere Düsen entlang der Behälterwand so im Behälter angebracht, daß ihre Aus­trittsöffnungen im wesentlichen parallel zur Behälterwand zeigen.The nozzle is preferably installed on the container wall or in the immediate vicinity of the container wall in the container such that the outlet opening is immersed in the medium. With this arrangement, on the one hand, the medium can be easily rotated by blowing in gas, on the other hand, there are no disruptive nozzles in the inside of the container. In a particularly advantageous embodiment, a plurality of nozzles are attached in the container along the container wall in such a way that their outlet openings point essentially parallel to the container wall.

Weiterhin ist es zweckmäßig, die Düse unmittelbar über dem Behälterboden anzuordnen. Auf diese Weise wird der gesamte Behälterinhalt durch die rotierenden und aufsteigenden Gasblasen erfaßt.It is also expedient to arrange the nozzle directly above the bottom of the container. In this way, the entire contents of the container are captured by the rotating and rising gas bubbles.

Der Behälter kann z.B. als Belebungsbecken zur Abwasser­behandlung ausgebildet sein oder als Pfanne zum Nachbe­handeln einer Metallschmelze. Insbesondere im letzteren Fall ist es zweckmäßig, die Düse mit einem Düsenkopf aus porösem Material zu versehen, um einerseits einen fein­blasigen Gaseintrag zu gewährleisten und andererseits vor hohen thermischen Belastungen durch die heiße Metall­schmelze gewappnet zu sein. Um ein Verstopfen der Aus­trittsöffnungen zu verhindern, wird bevorzugt ein poröser Stein mit gerichteter Porösität verwendet. Auch die Bo­dendüsen sind vorzugsweise mit Düsenköpfen aus porösem Material versehen.The container can be designed, for example, as an aeration tank for wastewater treatment or as a pan for post-treatment of a molten metal. In the latter case in particular, it is expedient to provide the nozzle with a nozzle head made of porous material, on the one hand to ensure a fine-bubble gas entry and on the other hand to be armed against high thermal loads caused by the hot molten metal. In order to prevent the outlet openings from becoming blocked, a porous stone with directed porosity is preferably used. The floor nozzles are also preferably provided with nozzle heads made of porous material.

Besonders beim Spülen von Metallschmelze ist es vorteil­haft, die Düse mit hohem Gasdruck zu beaufschlagen. Hierzu steht die Düse mit einer Druckleitung für hochver­dichtetes Gas in Verbindung. Die Beaufschlagung kann kontinuierlich oder pulsierend erfolgen.It is particularly advantageous when flushing molten metal to apply high gas pressure to the nozzle. For this purpose, the nozzle is connected to a pressure line for highly compressed gas. The application can be continuous or pulsating.

Auch die Bodendüsen stehen mit Druckleitungen für hoch­verdichtetes Gas in Verbindung. In den Druckleitungen sind unmittelbar vor den Bodendüsen die erwähnten schnell öffnenden und schließenden Ventile angeordnet.The floor nozzles are also connected to pressure lines for highly compressed gas. The quick-opening and closing valves mentioned are arranged in the pressure lines immediately before the floor nozzles.

Das erfindungsgemäße Gaseintragssystem eignet sich ins­besondere zum Einsatz bei der sogenannten Pfannen­metallurgie, also beim Nachbehandeln von Metall in der Pfanne. Mit dem Gaseintragssystem können auch Stahl­schmelzen, die aufgrund ihrer besonders hohen Dichte mit herkömmlichen Gasspülsystemen nur unzureichend behandelt werden können, wirksam mit Gas gespült werden. Die Erfin­dung kann aber auch bei der Abwasserreinigung verwendet werden, um beispielsweise Sauerstoff feinblasig in das Abwasser einzutragen. Auch beim Strippen von Flüssigkei­ten in der Abwassertechnik, Lebensmitteltechnik oder chemischen Industrie kann das erfindungsgemäße Gasein­tragssystem mit Vorteil eingesetzt werden.The gas introduction system according to the invention is particularly suitable for use in so-called ladle metallurgy, that is to say when post-treating metal in the ladle. With the gas entry system, even steel melts, which due to their particularly high density cannot be adequately treated with conventional gas flushing systems, can be effectively flushed with gas. However, the invention can also be used in wastewater treatment, for example in order to introduce oxygen into the wastewater in fine bubbles. The gas entry system according to the invention can also be used to advantage when stripping liquids in wastewater technology, food technology or the chemical industry.

Neben dem Vorteil eines besonders feinblasigen Gasein­trags weist das erfindungsgemäße Gaseintragssystem auch den entscheidenden Vorzug auf, ohne mechanisch bewegte Teile auszukommen. Dies stellt einen bedeutenden Vorteil gegenüber Rührsystemen dar, die zudem beispielsweise bei der Stahlbehandlung wegen der hohen Dichte der Stahl­schmelze nicht eingesetzt werden können.In addition to the advantage of a particularly fine-bubble gas feed, the gas feed system according to the invention also has the decisive advantage of not having to move mechanically moving parts. This represents a significant advantage over stirring systems, which cannot be used in steel treatment, for example, because of the high density of the molten steel.

Im folgenden sei die Erfindung anhand eines in einer Zeichnung schematisch dargestellten Auführungsbeispiels näher erläutert.The invention is explained in more detail below with reference to an exemplary embodiment shown schematically in a drawing.

Die Figur zeigt eine Pfanne zur Nachbehandlung von Stahlschmelze.The figure shows a pan for post-treatment of molten steel.

In der Pfanne 1 befindet sich Stahlschmelze 2, die durch Spülen mit Stickstoff nachbehandelt werden soll. Am Pfannenmantel 3 sind Düsen 4 mit Düsenköpfen 5 aus porösem Stein angeordnet. Um ein Verstopfen der Düsen 4 durch die Stahlschmelze 2 zu verhindern, weist der poröse Stein ein gerichtete Porösität auf. Die Düsen 4 sind so angeordnet, daß die Austrittsöffnungen der Düsenköpfe 5 im wesentlichen parallel zum Pfannenmantel 3 gerichtet sind. Zum Spülen der Stahlschmelze werden die Düsen 4 über eine nicht dargestellte Druckleitung mit hochverdichtetem Stickstoffgas beaufschlagt. Die Düsen 4 blasen das Gas so in die Stahlschmelze ein, daß diese in eine Rotation um die vertikale Pfannenachse versetzt wird. Über am Pfannenboden 6 installierte Bodendüsen 7 wird pulsierend Stickstoffgas von unten in die Stahlschmelze eingetragen. Hierzu stehen die Boden­düsen 7 mit nicht dargestellten Druckleitungen für hoch­verdichtetes Stickstoffgas in Verbindung. Unmittelbar vor den Bodendüsen 7 sind in den Druckleitungen schnell arbeitende Magnetventile angeordnet, die einen pulsie­renden Gaseintrag ermöglichen. Die Bodendüsen 7 sind als poröse Stopfensteine mit gerichteter Porösität ausge­bildet, um Verstopfungen durch die Stahlschmelze zu ver­hindern. Durch den pulsierenden Gaseintrag wird erreicht, daß die Gasblasen beim Kontakt mit der rotierenden Stahl­schmelze in kleiner Ausdehnung abreißen und von der rotierenden Stahlschmelze mitgenommen werden. Eine Konglomerierung der kleinen Gasblasen zu großen wird verhindert.In the pan 1 there is molten steel 2, which is to be treated by purging with nitrogen. Nozzles 4 with nozzle heads 5 made of porous stone are arranged on the pan shell 3. In order to prevent the nozzles 4 from becoming blocked by the molten steel 2, the porous stone has a directed porosity. The nozzles 4 are arranged such that the outlet openings of the nozzle heads 5 are directed essentially parallel to the pan jacket 3. To flush the molten steel, the nozzles 4 are charged with highly compressed nitrogen gas via a pressure line (not shown). The nozzles 4 blow the gas into the molten steel so that it is rotated around the vertical pan axis. Via bottom nozzles 7 installed on the pan bottom 6, nitrogen gas is pulsed into the molten steel from below. For this purpose, the floor nozzles 7 are connected to pressure lines (not shown) for highly compressed nitrogen gas. Immediately in front of the floor nozzles 7, fast-acting solenoid valves are arranged in the pressure lines, which allow a pulsating gas input. The floor nozzles 7 are designed as porous plug stones with directed porosity in order to prevent blockages by the molten steel. The pulsating gas input ensures that the gas bubbles tear off in a small expansion when they come into contact with the rotating steel melt and are carried along by the rotating steel melt. A conglomeration of the small gas bubbles to large ones is prevented.

Claims (9)

1. Vorrichtung zum Eintragen von Gas in ein fließfähiges Medium, das sich in einem Behälter befindet, dadurch gekennzeichnet, daß auf dem Behälterboden (6) Boden­düsen (7) zum Eintragen von Gas in das Medium ange­ordnet sind, die mit schnellöffnenden und -schließen-­Ventilen in Verbindung stehen.1. Device for introducing gas into a flowable medium, which is located in a container, characterized in that on the container bottom (6) bottom nozzles (7) are arranged for introducing gas into the medium, which with quick-opening and -closing- Valves are connected. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß bei einer zylinder- oder pfannenförmigen Ausbil­dung des Behälters (1) mit im wesentlichen vertikaler Achse zusätzlich mindestens eine Düse (4) so angeord­net ist, daß ihre Austrittsöffnung (5) in eine im wesentlichen horizontale Richtung zeigt, die mit der Behälterwand (3) einen Winkel einschließt, der gleich oder größer als 0° und kleiner als 90° ist.2. Device according to claim 1, characterized in that in a cylindrical or pan-shaped design of the container (1) with a substantially vertical axis, at least one nozzle (4) is additionally arranged so that its outlet opening (5) in a substantially horizontal Direction shows that forms an angle with the container wall (3) that is equal to or greater than 0 ° and less than 90 °. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Austrittsöffnung (5) in eine im wesentlichen horizontale Richtung zeigt, die mit der Behälterwand (3) einen Winkel von ca. 0° bis ca. 30° einschließt.3. Apparatus according to claim 2, characterized in that the outlet opening (5) points in a substantially horizontal direction, which includes an angle of approximately 0 ° to approximately 30 ° with the container wall (3). 4. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Düse (4) an der Behälterwand (3) oder in unmittelbarer Nähe der Behälterwand (3) im Behälter (1) so angeordnet ist, daß die Austrittsöffnung (5) in das Medium (2) eintaucht.4. Apparatus according to claim 2 or 3, characterized in that the nozzle (4) on the container wall (3) or in the immediate vicinity of the container wall (3) in the container (1) is arranged so that the outlet opening (5) in the Immersed medium (2). 5. Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Düse (4) unmittelbar über dem Behälterboden (6) angeordnet ist.5. Device according to one of claims 2 to 4, characterized in that the nozzle (4) is arranged directly above the container bottom (6). 6. Vorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die Düse (4) einen Düsenkopf (5) aus porösem Material aufweist.6. Device according to one of claims 2 to 5, characterized in that the nozzle (4) has a nozzle head (5) made of porous material. 7. Vorrichtung nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß die Düse (4) mit einer Druckleitung für hochverdichtetes Gas in Verbindung steht.7. Device according to one of claims 2 to 6, characterized in that the nozzle (4) is connected to a pressure line for highly compressed gas. 8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Behälter (1) als Pfanne zum Nachbehandeln einer Metallschmelze ausgebildet ist.8. Device according to one of claims 1 to 7, characterized in that the container (1) is designed as a pan for post-treatment of a molten metal. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Behälter (1) als Belebungsbecken zur Abwasserbehandlung ausgebildet ist.Device according to one of claims 1 to 7, characterized in that the container (1) is designed as an aeration tank for waste water treatment.
EP89122476A 1988-12-10 1989-12-06 Gas introducing system Expired - Lifetime EP0376008B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89122476T ATE86140T1 (en) 1988-12-10 1989-12-06 GAS INJECTION SYSTEM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3841618 1988-12-10
DE3841618A DE3841618A1 (en) 1988-12-10 1988-12-10 GAS ENTRY SYSTEM

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Publication Number Publication Date
EP0376008A1 true EP0376008A1 (en) 1990-07-04
EP0376008B1 EP0376008B1 (en) 1993-03-03

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EP89122476A Expired - Lifetime EP0376008B1 (en) 1988-12-10 1989-12-06 Gas introducing system

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Country Link
EP (1) EP0376008B1 (en)
AT (1) ATE86140T1 (en)
DE (2) DE3841618A1 (en)
ES (1) ES2040444T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008053174A1 (en) 2006-10-30 2008-05-08 The University Of Sheffield Bubble generation for aeration and other purposes
DE102009022208A1 (en) 2009-05-20 2010-11-25 Messer Group Gmbh Treating metal melts, comprises introducing treatment gas into metal melt using blowing lance, and guiding stream of liquefied treatment gases emerging from nozzle within tubular inflow channel of the lance reaching up to the metal melt
US10377651B2 (en) 2006-10-30 2019-08-13 Perlemax Ltd Bubble generation for aeration and other purposes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19517444C1 (en) * 1995-05-12 1996-01-18 Strate Maschf Device for aeration of waste water in activated sludge tank
DE102005016080B4 (en) * 2005-04-08 2009-10-29 Technocon Gmbh Device for biological cleaning of waste water, has a reaction container containing microorganisms in which the waste water and gas are supplied over two tubes existing out of two component nozzles concentrically arranged with one another

Citations (13)

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Publication number Priority date Publication date Assignee Title
NL266357A (en) * 1900-01-01
DE629722C (en) * 1934-10-25 1936-05-09 Louis Peters Method and device for uniformly mixing powdery material
DE726101C (en) * 1938-04-29 1942-10-21 Karl Ludwig Lanninger Device for circulating the contents of sewage or manure pits in the circuit
CH336250A (en) * 1955-06-28 1959-02-15 Fuller Co Method for mixing a pulverulent material and apparatus for carrying out the method
US3259998A (en) * 1962-08-17 1966-07-12 Siderurgie Fse Inst Rech Device for the fluidization of powdered materials
DE1782092A1 (en) * 1968-07-18 1971-07-08 Inst Chemii Ogolnej Process for mixing powdery and fine-grained solids with liquids and device for carrying out the process
US3653639A (en) * 1971-02-04 1972-04-04 Whirl Air Flow Corp High pressure air and liquid blending method and apparatus for discrete materials
FR2163802A5 (en) * 1971-12-02 1973-07-27 Rolland A Pasty animal food prods - mixing and distributing appts eg pigswill
FR2293972A1 (en) * 1974-12-09 1976-07-09 Nat Res Dev APPARATUS AND PROCESS FOR MIXING POWDERY MATERIALS
DE2722202A1 (en) * 1976-05-20 1977-12-01 Boc Ltd METHOD AND DEVICE FOR TREATMENT OF A LIQUID WITH A GAS
EP0069633A1 (en) * 1981-07-06 1983-01-12 DENIS-SERTAC Société Anonyme Process and silo for the homogenization of pulverulent materials
DE3433018A1 (en) * 1984-09-07 1986-03-20 Linde Ag Apparatus for the biological purification of waste water
EP0225526A2 (en) * 1985-12-05 1987-06-16 ABS International S.A. Device for treating a liquid with gas or for mixing liquids

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL266357A (en) * 1900-01-01
DE629722C (en) * 1934-10-25 1936-05-09 Louis Peters Method and device for uniformly mixing powdery material
DE726101C (en) * 1938-04-29 1942-10-21 Karl Ludwig Lanninger Device for circulating the contents of sewage or manure pits in the circuit
CH336250A (en) * 1955-06-28 1959-02-15 Fuller Co Method for mixing a pulverulent material and apparatus for carrying out the method
US3259998A (en) * 1962-08-17 1966-07-12 Siderurgie Fse Inst Rech Device for the fluidization of powdered materials
DE1782092A1 (en) * 1968-07-18 1971-07-08 Inst Chemii Ogolnej Process for mixing powdery and fine-grained solids with liquids and device for carrying out the process
US3653639A (en) * 1971-02-04 1972-04-04 Whirl Air Flow Corp High pressure air and liquid blending method and apparatus for discrete materials
FR2163802A5 (en) * 1971-12-02 1973-07-27 Rolland A Pasty animal food prods - mixing and distributing appts eg pigswill
FR2293972A1 (en) * 1974-12-09 1976-07-09 Nat Res Dev APPARATUS AND PROCESS FOR MIXING POWDERY MATERIALS
DE2722202A1 (en) * 1976-05-20 1977-12-01 Boc Ltd METHOD AND DEVICE FOR TREATMENT OF A LIQUID WITH A GAS
EP0069633A1 (en) * 1981-07-06 1983-01-12 DENIS-SERTAC Société Anonyme Process and silo for the homogenization of pulverulent materials
DE3433018A1 (en) * 1984-09-07 1986-03-20 Linde Ag Apparatus for the biological purification of waste water
EP0225526A2 (en) * 1985-12-05 1987-06-16 ABS International S.A. Device for treating a liquid with gas or for mixing liquids

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008053174A1 (en) 2006-10-30 2008-05-08 The University Of Sheffield Bubble generation for aeration and other purposes
GB2443396B (en) * 2006-10-30 2011-10-19 Univ Sheffield Bubble generation for aeration and other purposes
US8287175B2 (en) 2006-10-30 2012-10-16 Perlemax Limited Bubble generation for aeration and other purposes
US10377651B2 (en) 2006-10-30 2019-08-13 Perlemax Ltd Bubble generation for aeration and other purposes
DE102009022208A1 (en) 2009-05-20 2010-11-25 Messer Group Gmbh Treating metal melts, comprises introducing treatment gas into metal melt using blowing lance, and guiding stream of liquefied treatment gases emerging from nozzle within tubular inflow channel of the lance reaching up to the metal melt
DE102009022208B4 (en) * 2009-05-20 2013-03-28 Messer Group Gmbh Process for treating molten metals

Also Published As

Publication number Publication date
EP0376008B1 (en) 1993-03-03
ATE86140T1 (en) 1993-03-15
DE58903672D1 (en) 1993-04-08
DE3841618A1 (en) 1990-06-13
ES2040444T3 (en) 1993-10-16

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