DE10131279A1 - Gas-liquid mixing apparatus has central tube for discharging gas into twisting liquid flow delivered by outer concentric tube with conical mixing rim - Google Patents

Gas-liquid mixing apparatus has central tube for discharging gas into twisting liquid flow delivered by outer concentric tube with conical mixing rim

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Publication number
DE10131279A1
DE10131279A1 DE10131279A DE10131279A DE10131279A1 DE 10131279 A1 DE10131279 A1 DE 10131279A1 DE 10131279 A DE10131279 A DE 10131279A DE 10131279 A DE10131279 A DE 10131279A DE 10131279 A1 DE10131279 A1 DE 10131279A1
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Germany
Prior art keywords
tube
outer tube
liquid
gas
rim
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Granted
Application number
DE10131279A
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German (de)
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DE10131279C2 (en
Inventor
Juergen Kampe
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Priority to DE10131279A priority Critical patent/DE10131279C2/en
Publication of DE10131279A1 publication Critical patent/DE10131279A1/en
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Expired - Fee Related 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
    • 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
    • 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
    • B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
    • 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
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • 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
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • 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
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4334—Mixers with a converging cross-section
    • 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
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4337—Mixers with a diverging-converging cross-section

Abstract

A gas-liquid mixing apparatus has a central tube (1) discharging gas into a surrounding twisting liquid flow delivered by an outer concentric tube (3). The outer tube extends beyond the inner tube and terminates in a conical (4) rim. Preferred Features: The conical rim surface is straight, concave or convex in axial cross-section. Alternatively, the outer pipe widens conically to terminate in a converging conical rim, which then discharges to a parallel tube of the same diameter at the first outer tube (3).

Description

Die Erfindung betrifft eine Vorrichtung zum Eintrag von Gas in drallierte flüssige Medien in welcher sich durch Ausbildung eines Ringspaltes mittels einer Rohr- in Rohranordnung ein dem Ringspalt entsprechender Hohlstrahl bildet, wobei die Flüssigkeits-Gas-Gemisch-Austrittsöffnung des Außenrohres der Vorrichtung vom Innenrohr derselben beabstandet ist.The invention relates to a device for Entry of gas into swirling liquid media which is formed by the formation of an annular gap by means of a pipe-in-pipe arrangement Forms the corresponding hollow jet, whereby the liquid-gas mixture outlet opening of the Outer tube of the device from the inner tube the same is spaced.

Die Erfindung wird angewandt wo eine intensive Vermischung von gasförmigen und flüssigen Medien zum Zwecke der Herstellung oder Anreicherung von Lösungen oder zur Herstellung von chemischen Reaktionen beabsichtigt ist.The invention is applied where intensive Mixing of gaseous and liquid media for the purpose of producing or enriching Solutions or for the production of chemical Reactions is intended.

Bekannt ist eine solche Vorrichtung zur intensiven Vermischung von gasförmigen- und flüssigen Medien mittels derer innerhalb eines Rohres ein Flüssigkeitsstrom ein weiteres darin befindliches gasführendes Saugrohr mit peripheren schlitzförmigen Öffnungen peripher drallartig umströmt, wobei ein rotierender Hohlstrahl entsteht. Such a device for intensive is known Mixing of gaseous and liquid media by means of which within a pipe Liquid flow another one located therein gas-carrying suction pipe with peripheral slot-shaped openings peripherally swirling flows around, a rotating hollow jet arises.  

Dabei setzt die intensive Vermischung mit Bildung des Hohlstrahles an der Stelle der Querschnitts­ erweiterung am Ende des Saugrohres ein und verlagert sich kontinuierlich in Strömungs­ richtung bis zur Austrittsöffnung des Hohlstrahles am Ende des Rohres (DE 199 33 680 A1).The intensive mixing with education continues of the hollow jet at the point of the cross section extension at the end of the intake manifold and shifts continuously into flow direction to the outlet opening of the hollow jet at the end of the tube (DE 199 33 680 A1).

Aufgabe der Erfindung ist es, diese Vorrichtung weiter zu verbessern und deren Effektivität sowie deren Anwendungsmöglichkeiten zu erweitern. Die Vermischung von gasförmigen und flüssigen Medien soll mit minimalem technischem und energetischem Aufwand intensiviert werden.The object of the invention is this device continue to improve and their effectiveness as well to expand their application possibilities. The Mixing of gaseous and liquid media should be with minimal technical and energetic Effort will be intensified.

Erfindungsgemäß wird die Aufgabe wie mit den Ansprüchen angegeben gelöst.According to the task as with Claims specified solved.

Vorteilhaft ist daran, dass die erfindungsgemäße Ausbildung der Rohraustrittsöffnung bei einem geringen technischen Aufwand eine weitere intensivere Vermischung von gasförmigen und flüssigen Medien bei bessere Nutzung der, der Gemischströmung immanenten, kinetischen Energie bewirkt.The advantage of this is that the inventive Formation of the pipe outlet opening at one low technical effort another more intensive mixing of gaseous and liquid media with better use of the Mix flow inherent, kinetic energy causes.

Nachstehend wird die Erfindung an zwei Aus­ führungsbeispielen näher erläutert. MitThe invention is based on two management examples explained in more detail. With

Fig. 1 ist ein Teilquerschnitt der Vorrichtung und mit Fig. 1 is a partial cross section of the device and with

Fig. 2 ist ein Teilquerschnitt der Flüssigkeits- Gas-Gemisch-Austrittsöffnung und mit Fig. 2 is a partial cross section of the liquid-gas mixture outlet opening and with

Fig. 3 ist eine Variante mit einer Ausbildung der Vorrichtung im Innenquerschnitt des Außenrohres Fig. 3 is a variant with an embodiment of the device in the inner cross section of the outer tube

schematisch dargestellt.shown schematically.

Beispiel 1example 1

An der Ausgangsöffnung 5 des Außenrohres 3 mit einer lichten Weite von 100 mm ist die konische Verjüngung 4 des lichten Mischrohrquerschnitts in Form eines in das Außenrohr 3 eingesetzten Ringes oder einer solchen Anformung angeordnet. Der Innendurchmesser dieser konischen Öffnung ist dabei mit 80 mm bemessen. Der Außendurchmesser des Innenrohres 1 der Vorrichtung beträgt 60 mm, so dass der Ringspalt 2 zwischen dem Innenrohr 1 und dem Außenrohr 3 eine Dicke von 20 mm aufweist. Die konische Verjüngung 4 ist dabei so gestaltet, dass der durch das Außenrohr 3 strömende Flüssigkeits- Gas-Gemischstrahl, welcher im wesentlichen noch die Konturen des Ringspaltes 2 aufweist, mit einem spitzwinkligen Einfallswinkel von 40° teilweise auf die innere Mantelfläche 6 der konischen Verjüngung 4 auftrifft. Der hier auftreffende Teilstrom kreisringförmigen Querschnitts, wird dabei auf den übrigen Teilstrom abgelenkt, wobei sich beide Teilströme intensiv vermischen und sich beide Teilströme gemeinsam in eine aus den beiden Strömungsrichtungen der Teilströme resultierende Richtung 8 zentrisch auf die Mittellinie des Rohrquerschnitts bzw. der Austrittsöffnung zu bewegen, was eine weitere intensive Vermischung der Teilströme und insbesondere auch die Vermischung des gasförmigen Mediums mit dem flüssigen Medium begünstigt.At the outlet opening 5 of the outer tube 3 with a clear width of 100 mm, the conical taper 4 of the clear mixing tube cross-section is arranged in the form of a ring inserted into the outer tube 3 or such a molding. The inside diameter of this conical opening is 80 mm. The outer diameter of the inner tube 1 of the device is 60 mm, so that the annular gap 2 between the inner tube 1 and the outer tube 3 has a thickness of 20 mm. The conical taper 4 is designed such that the liquid-gas mixture jet flowing through the outer tube 3 , which essentially still has the contours of the annular gap 2 , partially with an acute angle of incidence of 40 ° onto the inner lateral surface 6 of the conical taper 4 incident. The partial stream of circular cross-section encountered here is deflected to the remaining partial stream, the two partial streams mixing intensively and the two partial streams moving together centrally in a direction 8 resulting from the two flow directions of the partial streams onto the center line of the pipe cross section or the outlet opening, which favors a further intensive mixing of the partial streams and in particular also the mixing of the gaseous medium with the liquid medium.

Beispiel 2Example 2

Das Außenrohr 3 mit einer lichten Weite 100 mm ist in Strömungsrichtung und beginnend in Höhe des Innenrohrendes gleichmäßig konisch über eine Distanz von 120 mm um 20 mm erweitert. An dieser Stelle der maximalen Erweiterung ist das Außenrohr wiederum konisch auf einer Distanz von 10 mm auf die lichte Weite von 100 mm reduziert. The outer tube 3 with a clear width of 100 mm is tapered evenly conically over a distance of 120 mm in the flow direction and starting at the height of the inner tube end. At this point of maximum expansion, the outer tube is again conically reduced by a distance of 10 mm to a clear width of 100 mm.

Bei einem Außendurchmesser des Innenrohres 1 von 60 mm und einem Innendurchmesser des Außenrohres 3 in Höhe des Innenrohrendes von 100 mm, weist der Ringspalt 2 zwischen Innenrohr 1 und Außenrohr 3 eine Dicke von 20 mm auf, was auch in etwa der Dicke des Ringstrahles entspricht. Infolge der Zentrifugalkräfte des wendelförmig Ringstrahles erfolgt die Strömung unmittelbar an der Innen­ wandung des in diesem Bereich erweiterten Außen­ rohres 3 entlang. Ein äußerer Teilstrom von etwa 10 mm Dicke trifft dann an der Einschnürung der Außenrohrquerschnittserweiterung 7 auf die innere Mantelfläche der kurzen konischen Abschrägung 6, wird von dieser in Strömungsrichtung und in Drallrichtung abgelenkt wobei sich dieser Teilstrom mit dem anderen Teilstrom turbulent vermischt, was auch eine Vermischung von gasfömigem Medium und flüssigem Medium begünstigt. Die Außenrohr-Austrittsöffnung 5 ist an dieser Stelle genauso groß bemessen wie in Höhe des Innenrohrendes, wodurch der Strom des Mediumgemisches nicht gedrosselt wird, was den Energiegehalt des strömenden Mediumgemisches nicht unnötig vermindert.With an outer diameter of the inner tube 1 of 60 mm and an inner diameter of the outer tube 3 at the height of the inner tube end of 100 mm, the annular gap 2 between the inner tube 1 and the outer tube 3 has a thickness of 20 mm, which also corresponds approximately to the thickness of the ring beam. As a result of the centrifugal forces of the helical ring jet, the flow takes place directly along the inner wall of the outer tube 3, which is enlarged in this area. An outer partial stream of about 10 mm thickness is then incident at the constriction of the outer pipe cross section extension 7 to the inner lateral surface of the short conical bevel 6, by this deflected in the flow direction and in the twist direction wherein this partial flow turbulently mixed with the other partial stream, which is also a mixture favored by gaseous medium and liquid medium. The outer tube outlet opening 5 is dimensioned at this point as large as at the height of the inner tube end, as a result of which the flow of the medium mixture is not throttled, which does not unnecessarily reduce the energy content of the flowing medium mixture.

Claims (4)

1. Vorrichtung zum Eintrag von Gas in flüssige Medien in welcher sich durch Ausbildung eines Ringspaltes mittels einer Rohr- in Rohranordnung ein dem Ringspalt entsprechender drallierter Hohlstrahl bildet, wobei die Flüssigkeits-Gas- Gemisch-Austrittsöffnung des Außenrohres der Vorrichtung vom Innenrohr derselben beabstandet ist, dadurch gekennzeichnet, daß das Außenrohr (3) derselben an der Flüssigkeits-Gas-Gemisch-Austrittsöffnung (5) kurz konisch verjüngt ist, wobei die lichte Weite der Flüssigkeits-Gas-Gemisch-Austrittsöffnung (5) größer bemessen ist, als der Außendurchmesser des Innenrohres (1) der Vorrichtung.1. Device for introducing gas into liquid media in which a twisted hollow jet corresponding to the ring gap is formed by forming an annular gap by means of a tube-in-tube arrangement, the liquid-gas mixture outlet opening of the outer tube of the device being spaced from the inner tube thereof. characterized in that the outer tube ( 3 ) is tapered briefly at the liquid-gas mixture outlet opening ( 5 ), the clear width of the liquid-gas mixture outlet opening ( 5 ) being larger than the outer diameter of the Inner tube ( 1 ) of the device. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die konische Verjüngung (4) der Außenrohr- Austrittsöffnung (5) an dem Außenrohr (3) angeformt ist oder als Formteil an dieser angeordnet ist.2. Device according to claim 1, characterized in that the conical taper ( 4 ) of the outer tube outlet opening ( 5 ) on the outer tube ( 3 ) is integrally formed or is arranged as a molded part on this. 3. Vorrichtung nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die innere Mantelfläche (6) der konusartigen Verjüngung (4) in ihrem axialem Querschnitt gerade, konkav oder konvex ausgebildet ist. 3. Device according to claims 1 and 2, characterized in that the inner lateral surface ( 6 ) of the conical taper ( 4 ) is straight, concave or convex in its axial cross section. 4. Vorrichtung nach den Ansprüchen 2 bis 3, dadurch gekennzeichnet, dass das Außenrohr (3) über eine Distanz bis zur mehrfachen lichten Weite desselben eine Außenrohrquerschnittserweiterung (7) in Strömungsrichtung, beginnend am Innenrohrende, aufweist und endend an der kurzen konischen Verjüngung (4) an der Stelle der maximalen Außenrohrquerschnittserweiterung (7), wobei die lichte Weite der konischen Verjüngung (4) gleich oder größer der lichten Außenrohrweite in Höhe des Innenrohres (1) bemessen ist.4. Device according to claims 2 to 3, characterized in that the outer tube ( 3 ) over a distance up to several times the same width has an outer tube cross-sectional widening ( 7 ) in the flow direction, starting at the inner tube end, and ending at the short conical taper ( 4th ) at the location of the maximum outer tube cross-sectional widening ( 7 ), the clear width of the conical taper ( 4 ) being equal to or greater than the clear outer tube width at the height of the inner tube ( 1 ).
DE10131279A 2001-01-30 2001-06-28 Device for introducing gas into liquid media Expired - Fee Related DE10131279C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10131279A DE10131279C2 (en) 2001-01-30 2001-06-28 Device for introducing gas into liquid media

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10104155 2001-01-30
DE10131279A DE10131279C2 (en) 2001-01-30 2001-06-28 Device for introducing gas into liquid media

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DE10131279A1 true DE10131279A1 (en) 2002-11-07
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT413020B (en) * 2002-10-14 2005-10-15 Hochgatterer Manuel Apparatus for mixing gases and liquids has mixing chamber with axially spaced ribs with sharp edges and domed shaped plates in its center whose widest sections coincide with ribs to form nozzles

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125513A1 (en) * 1991-08-01 1993-02-04 Escher Wyss Gmbh Fibre suspension mixing - introduces thick suspension into centre of thin suspension flow at a faster speed with turbulence
DE4211290C2 (en) * 1992-04-03 1994-07-07 Voith Gmbh J M Mixing device with variable pipe cross-sections for mixing two liquids at a constant mixture volume flow to supply the headbox of a paper machine
DE4414272A1 (en) * 1994-04-23 1995-10-26 Erz & Kohleflotation Gmbh Device for gassing a suspension
DE19822607A1 (en) * 1997-05-22 1998-11-26 Innova G Entwicklungsgesellsch Equipment for mixing of fluid into a gas stream
DE19933680C1 (en) * 1999-05-13 2000-12-07 Juergen Kampe Apparatus to introduce gas into liquid, e.g. air into water, comprises gas pipe with slits to discharge gas into a surrounding pipe of flowing liquid in spiral motion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125513A1 (en) * 1991-08-01 1993-02-04 Escher Wyss Gmbh Fibre suspension mixing - introduces thick suspension into centre of thin suspension flow at a faster speed with turbulence
DE4211290C2 (en) * 1992-04-03 1994-07-07 Voith Gmbh J M Mixing device with variable pipe cross-sections for mixing two liquids at a constant mixture volume flow to supply the headbox of a paper machine
DE4414272A1 (en) * 1994-04-23 1995-10-26 Erz & Kohleflotation Gmbh Device for gassing a suspension
DE19822607A1 (en) * 1997-05-22 1998-11-26 Innova G Entwicklungsgesellsch Equipment for mixing of fluid into a gas stream
DE19933680C1 (en) * 1999-05-13 2000-12-07 Juergen Kampe Apparatus to introduce gas into liquid, e.g. air into water, comprises gas pipe with slits to discharge gas into a surrounding pipe of flowing liquid in spiral motion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT413020B (en) * 2002-10-14 2005-10-15 Hochgatterer Manuel Apparatus for mixing gases and liquids has mixing chamber with axially spaced ribs with sharp edges and domed shaped plates in its center whose widest sections coincide with ribs to form nozzles

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Publication number Publication date
DE10131279C2 (en) 2003-04-17

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