EP1170054B1 - Mixer for mixing gases and other Newtonian liquids - Google Patents

Mixer for mixing gases and other Newtonian liquids Download PDF

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Publication number
EP1170054B1
EP1170054B1 EP00112874A EP00112874A EP1170054B1 EP 1170054 B1 EP1170054 B1 EP 1170054B1 EP 00112874 A EP00112874 A EP 00112874A EP 00112874 A EP00112874 A EP 00112874A EP 1170054 B1 EP1170054 B1 EP 1170054B1
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EP
European Patent Office
Prior art keywords
built
row
flow
mixer
flow direction
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
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EP00112874A
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German (de)
French (fr)
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EP1170054A1 (en
Inventor
Hans Prof. Dr.-Ing. Ruscheweyh
Michael Dipl.-Ing. Kaatz
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Balcke Duerr GmbH
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Balcke Duerr GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE50001174T priority Critical patent/DE50001174D1/en
Priority to DK00112874T priority patent/DK1170054T3/en
Priority to PT00112874T priority patent/PT1170054E/en
Priority to EP00112874A priority patent/EP1170054B1/en
Priority to AT00112874T priority patent/ATE231738T1/en
Priority to ES00112874T priority patent/ES2190920T3/en
Application filed by Balcke Duerr GmbH filed Critical Balcke Duerr GmbH
Priority to CA002350944A priority patent/CA2350944C/en
Priority to MXPA01006232A priority patent/MXPA01006232A/en
Priority to US09/884,682 priority patent/US6615507B2/en
Publication of EP1170054A1 publication Critical patent/EP1170054A1/en
Application granted granted Critical
Publication of EP1170054B1 publication Critical patent/EP1170054B1/en
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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
    • B01F25/40—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
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4316—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod
    • B01F25/43161—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod composed of consecutive sections of flat pieces of material
    • 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
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4316—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
    • Y10T137/2087—Means to cause rotational flow of fluid [e.g., vortex generator]
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
    • Y10T137/2087—Means to cause rotational flow of fluid [e.g., vortex generator]
    • Y10T137/2093—Plural vortex generators

Definitions

  • the invention relates to a mixer for the mixture of gases and other Newtonian fluids, with a flow channel and arranged therein flow influencing installation surfaces, the installation surfaces are vortex generating surfaces with free flowing, directed against the flow leading edges, the course of both in the main flow direction of the Gas as well as a transverse thereto extending component.
  • mixing lengths of 15 to 100 times the channel diameter are required for turbulent flow.
  • this mixing section can be significantly shortened.
  • it must be taken in most conventionally used systems, a high pressure loss especially when high demands are placed on the homogeneity of the self-adjusting mixture.
  • Many of the conventional mixing systems are also limited to simple geometries, e.g. on cylindrical tubes or square channels, and can not be applied to large scale systems and complex mixing chamber systems.
  • the invention has for its object to provide a mixer for the mixture of gases and other Newtonian fluids, which causes a rapid mixing at even shorter mixing distance.
  • Such a trained mixer allows a particularly rapid mixing of the flow at a very short mixing distance.
  • the mixing has the consequence that the profiles of the guided gas and / or liquid flow are uniformed, with performance losses are avoided.
  • extensive and stable vortex vortex mounting surface according to the invention has a relatively low flow resistance, since it does not act with its entire surface as a guide surface, but with their front edges static vortex fields generated that automatically expand in the flow direction without additional installations for this extension or fins would be required. It results at least by the invention, each with respect to the flow direction partially overlapping vortex mounting surfaces a low-loss and effective mixing on a short mixing section.
  • a preferred development of the mixer is characterized by a further row of installation surfaces arranged at a distance behind the row, wherein the angles of incidence of the installation surfaces of the further row are opposite to the angles of incidence of the installation surfaces of the first row.
  • the angle of attack of the installation surfaces with respect to the main flow direction is preferably between 40 ° and 80 °, preferably 60 °.
  • the flow channel has a substantially rectangular cross section with a width to thickness ratio of B / D ⁇ 2, the row defined by the installation surfaces extending in the direction of the width.
  • FIG. 1 shows in longitudinal section a flow channel of rectangular cross-section narrowing at 1.
  • the flow channel is flowed through by a homogeneous gas or liquid mixture.
  • gases and liquids are meant here all so-called “Newtonian liquids”, i. including those fluids that behave in their fluidic properties comparable to the gases.
  • the flow channel including its width B and its thickness D is shown in cross section.
  • the ratio of the width B to the thickness D should preferably be B / D ⁇ 2.
  • FIG. 2 like FIG. 1, shows that mounting surfaces 2 are arranged in series in the flow channel.
  • the row is formed by a total of four installation surfaces 2.
  • the mounting surfaces 2 of each row which extends substantially transversely to the main flow direction 3, are designed identically with preferably the same angle of attack ⁇ to the main flow direction 3.
  • the angle of attack ⁇ to the main flow direction 3 is between 40 ° and 80 °, preferably 60 °.
  • the free flow around, directed against the flow leading edges 4 of the circular disk-shaped in the embodiment of the installation surfaces 2 have both a main flow direction, as well as a transverse thereto extending component. Further, since each mounting surface 2 is arranged at an acute angle to the main flow direction 3 in the flow channel, formed at each leading edge 4 of the mounting surfaces 2 vortex fields, which propagate in the form of a circle in the shape of a circle. In this case, the individual vortices roll inward on the back of the mounting surface 2. The vortices formed at the individual leading edges 4 behave largely statically, therefore do not change their position.
  • each vortex field forms a flow component transverse to the main flow direction of the gas, which results in a good mixing of the gas mixture as a result of the associated momentum exchange transverse to the flow direction.
  • the mixing is further enhanced by the particularly compact arrangement of the mounting surfaces 2 of each row, in which adjacent mounting surfaces 2 partially overlap with respect to the main flow direction 3. This overlap is indicated in Figure 2 by the reference numeral 5 and hatched drawn.
  • v 1 denotes the velocity profile of the gas flow on entering the mixing section. This velocity profile is nonuniform, due to, for example, a prior deflection of the gas flow. If a second row 7 of installation surfaces 2 is arranged downstream of a first row 6 of installation surfaces 2, and if the angles of incidence ⁇ 'of the installation surfaces of the second row 7 are opposite to the angles ⁇ of the installation surfaces of the first row 6, a homogenization can be achieved on exiting the mixing section achieve the velocity profile, as shown in Figure 1 with the velocity profile v 2 .
  • the mounting surfaces 2 are each designed as round discs.
  • disks with a delta-shaped or triangular basic shape, or elliptical or parabolic disks may also be used as the swirl mounting surfaces.
  • Such discs also have symmetrical and each inclined to the center plane arranged leading edges, as they are crucial for the emergence of leading edge vortices.

Abstract

A mixer for mixing gases and other Newtonian liquids comprises a flow channel which contains surfaces (2) that affect the flow. The surfaces create vortices and have front edges (4) that are directed against the flow and run with and laterally to the flow. A number of surfaces are arranged in a row (6), laterally to the main flow direction (3), and adjacent surfaces partially overlap.

Description

Die Erfindung betrifft einen Mischer für die Mischung von Gasen und anderen Newtonschen Flüssigkeiten, mit einem Strömungskanal und darin angeordneten, die Strömung beeinflussenden Einbauflächen, wobei die Einbauflächen wirbelerzeugende Flächen mit frei umströmten, gegen die Strömung gerichteten Vorderkanten sind, deren Verlauf sowohl eine in Hauptströmungsrichtung des Gases als auch eine quer hierzu verlaufende Komponente aufweist.The invention relates to a mixer for the mixture of gases and other Newtonian fluids, with a flow channel and arranged therein flow influencing installation surfaces, the installation surfaces are vortex generating surfaces with free flowing, directed against the flow leading edges, the course of both in the main flow direction of the Gas as well as a transverse thereto extending component.

Zum Mischen von Gas- oder Flüssigkeitsströmungen in Rohrleitungen oder Kanälen benötigt man bei turbulenter Strömung Mischlängen vom 15 bis 100-fachen des Kanaldurchmessers. Mittels geeigneter statischer Mischer in Gestalt von Einbaukörpern läßt sich diese Mischstrecke deutlich verkürzen. Es muß jedoch bei den meisten herkömmlich angewendeten Systemen ein hoher Druckverlust insbesondere dann in Kauf genommen werden, wenn hohe Anforderungen an die Homogenität der sich einstellenden Mischung gestellt werden. Viele der herkömmlichen Mischsysteme sind außerdem auf einfache Geometrien beschränkt, z.B. auf zylindrische Rohre oder quadratische Kanäle, und lassen sich nicht bei Großanlagen und komplizierten Mischkammersystemen anwenden.For mixing gas or liquid flows in pipelines or channels, mixing lengths of 15 to 100 times the channel diameter are required for turbulent flow. By means of suitable static mixer in the form of installation bodies, this mixing section can be significantly shortened. However, it must be taken in most conventionally used systems, a high pressure loss especially when high demands are placed on the homogeneity of the self-adjusting mixture. Many of the conventional mixing systems are also limited to simple geometries, e.g. on cylindrical tubes or square channels, and can not be applied to large scale systems and complex mixing chamber systems.

Aus der DE 29 11 873 C2 ist ein statischer Mischer bekannt, bei dem die Einbauten aus schräg angeströmten, deltaförmigen oder kreisscheibenförmigen Flächen bestehen, an deren Vorderkanten Wirbel entstehen. Die so gebildeten stationären und stabilen Wirbelsysteme wirken weit in den Strömungsnachlauf hinein, die zu mischenden Komponenten werden schichtenförmig eingerollt, was zu einer schnellen Vermischung bei sehr geringen Druckverlusten führt. Diese sogenannten "Wirbeleinbauflächen" haben sich wegen der erzielbaren kurzen Mischstrecke in der Praxis bewährt.From DE 29 11 873 C2, a static mixer is known, in which the internals consist of obliquely flowed, delta-shaped or circular disk-shaped surfaces, arise at the front edges of vertebrae. The stationary and stable vortex systems thus formed operate far into the flow lag into it, the components to be mixed are rolled up in layers, which leads to a rapid mixing at very low pressure losses. These so-called "spinal surfaces" have proven themselves in practice because of the achievable short mixing distance.

Der Erfindung liegt die Aufgabe zugrunde, einen Mischer für die Mischung von Gasen und anderen Newtonschen Flüssigkeiten zu schaffen, der eine schnelle Vermischung bei nochmals kürzerer Mischstrecke bewirkt.The invention has for its object to provide a mixer for the mixture of gases and other Newtonian fluids, which causes a rapid mixing at even shorter mixing distance.

Zur Lösung dieser Aufgabe wird bei einem Mischer mit den eingangs genannten Merkmalen vorgeschlagen, daß mehrere gleichartige Einbauflächen in einer Reihe im wesentlichen quer zur Hauptströmungsrichtung angeordnet sind, und daß sich aneinander benachbarte Einbauflächen in Bezug auf die Hauptströmungsrichtung teilweise überdecken.To solve this problem is proposed in a mixer with the features mentioned that a plurality of similar installation surfaces are arranged in a row substantially transverse to the main flow direction, and that adjacent to each other installation surfaces with respect to the main flow direction partially overlap.

Ein solchermaßen ausgebildeter Mischer ermöglicht eine besonders schnelle Durchmischung der Strömung bei sehr kurzer Mischstrecke. Die Durchmischung hat zur Folge, daß die Profile des hindurchgeführten Gas- und/oder Flüssigkeitsstromes vergleichmäßigt werden, wobei Leistungseinbußen vermieden werden. Trotz der Bildung ausgedehnter und stabiler Wirbel hat die erfindungsgemäße Wirbeleinbaufläche einen verhältnismäßig geringen Strömungswiderstand, da sie nicht mit ihrer gesamten Oberfläche als Leitfläche wirkt, sondern mit ihren vorderen Kanten statische Wirbelfelder erzeugt, die sich in Strömungsrichtung selbsttätig erweitem, ohne daß für diese Erweiterung zusätzliche Einbauten oder Leitflächen erforderlich wären. Es ergibt sich zumindest durch die erfindungsgemäßen, einander in Bezug auf die Strömungsrichtung teilweise überdeckenden Wirbeleinbauflächen eine verlustarme und wirkungsvolle Durchmischung auf kurzer Mischstrecke.Such a trained mixer allows a particularly rapid mixing of the flow at a very short mixing distance. The mixing has the consequence that the profiles of the guided gas and / or liquid flow are uniformed, with performance losses are avoided. Despite the formation of extensive and stable vortex vortex mounting surface according to the invention has a relatively low flow resistance, since it does not act with its entire surface as a guide surface, but with their front edges static vortex fields generated that automatically expand in the flow direction without additional installations for this extension or fins would be required. It results at least by the invention, each with respect to the flow direction partially overlapping vortex mounting surfaces a low-loss and effective mixing on a short mixing section.

Eine bevorzugte Weiterbildung des Mischers ist gekennzeichnet durch eine im Abstand hinter der Reihe angeordnete weitere Reihe von Einbauflächen, wobei die Anstellwinkel der Einbauflächen der weiteren Reihe entgegengesetzt zu den Anstellwinkeln der Einbauflächen der ersten Reihe sind. Durch eine solche Gestaltung des Mischers läßt sich zusätzlich zu dem Mischeffekt eine Vergleichmäßigung des Geschwindigkeitsprofiles über den Querschnitt des Strömungskanals erzielen.A preferred development of the mixer is characterized by a further row of installation surfaces arranged at a distance behind the row, wherein the angles of incidence of the installation surfaces of the further row are opposite to the angles of incidence of the installation surfaces of the first row. By such a design of the mixer, in addition to the mixing effect, a homogenization of the velocity profile over the cross section of the flow channel can be achieved.

Der Anstellwinkel der Einbauflächen in Bezug auf die Hauptströmungsrichtung beträgt vorzugsweise zwischen 40° und 80°, vorzugsweise 60°.The angle of attack of the installation surfaces with respect to the main flow direction is preferably between 40 ° and 80 °, preferably 60 °.

In weiterer Ausgestaltung des Mischers wird vorgeschlagen, daß der Strömungskanal einen im wesentlichen rechteckförmigen Querschnitt mit einem Verhältnis von Breite zu Dicke von B/D ≥ 2 aufweist, wobei die durch die Einbauflächen definierte Reihe sich in Richtung der Breite erstreckt.In a further embodiment of the mixer, it is proposed that the flow channel has a substantially rectangular cross section with a width to thickness ratio of B / D ≥ 2, the row defined by the installation surfaces extending in the direction of the width.

Auf der Zeichnung ist ein Ausführungsbeispiel eines erfindungsgemäßen Mischers dargestellt, und zwar zeigen

  • Figur 1 einen Längsschnitt durch einen Strömungskanal mit darin in zwei Reihen angeordneten Wirbeleinbauflächen und
  • Figur 2 einen Querschnitt durch den Strömungskanal entlang der Ebene II-II der Figur 1.
In the drawing, an embodiment of a mixer according to the invention is shown, in fact show
  • 1 shows a longitudinal section through a flow channel with arranged in two rows vortex mounting surfaces and
  • 2 shows a cross section through the flow channel along the plane II-II of Figure 1.

Figur 1 zeigt im Längsschnitt einen sich bei 1 verengenden Strömungskanal von rechteckförmigem Querschnitt. Der Strömungskanal wird von einem im homogenen Gas- oder Flüssigkeitsgemisch durchströmt. Unter Gasen und Flüssigkeiten sind hier alle so genannten "Newtonschen Flüssigkeiten" zu verstehen, d.h. einschließlich solcher Fluide, die sich in ihren strömungstechnischen Eigenschaften vergleichbar den Gasen verhalten.FIG. 1 shows in longitudinal section a flow channel of rectangular cross-section narrowing at 1. The flow channel is flowed through by a homogeneous gas or liquid mixture. By gases and liquids are meant here all so-called "Newtonian liquids", i. including those fluids that behave in their fluidic properties comparable to the gases.

In Figur 2 ist der Strömungskanal einschließlich seiner Breite B und seiner Dicke D im Querschnitt dargestellt. Das Verhältnis der Breite B zur Dicke D sollte vorzugsweise B/D ≥ 2 betragen.In Figure 2, the flow channel including its width B and its thickness D is shown in cross section. The ratio of the width B to the thickness D should preferably be B / D ≥ 2.

Figur 2 läßt ebenso wie Figur 1 erkennen, daß in dem Strömungskanal in Reihe zueinander Einbauflächen 2 angeordnet sind. Beim Ausführungsbeispiel wird die Reihe durch insgesamt vier Einbauflächen 2 gebildet. Die Einbauflächen 2 jeder Reihe, die sich im wesentlichen quer zur Hauptströmungsrichtung 3 erstreckt, sind gleichartig gestaltet mit vorzugsweise jeweils demselben Anstellwinkel α zur Hauptströmungsrichtung 3. Der Anstellwinkel α zur Hauptströmungsrichtung 3 beträgt zwischen 40° und 80°, vorzugsweise 60°.FIG. 2, like FIG. 1, shows that mounting surfaces 2 are arranged in series in the flow channel. In the exemplary embodiment, the row is formed by a total of four installation surfaces 2. The mounting surfaces 2 of each row, which extends substantially transversely to the main flow direction 3, are designed identically with preferably the same angle of attack α to the main flow direction 3. The angle of attack α to the main flow direction 3 is between 40 ° and 80 °, preferably 60 °.

Die frei umströmten, gegen die Strömung gerichteten Vorderkanten 4 der beim Ausführungsbeispiel kreisscheibenförmig gestalteten Einbauflächen 2 weisen sowohl eine in Hauptströmungsrichtung, als auch eine quer hierzu verlaufende Komponente auf. Da femer jede Einbaufläche 2 unter einem spitzen Winkel zu der Hauptströmungsrichtung 3 in dem Strömungskanal angeordnet ist, entstehen an jeder Vorderkante 4 der Einbauflächen 2 Wirbelfelder, welche sich stromabwärts kreiskegelförmig ausbreiten. Dabei wälzen sich die einzelnen Wirbel nach innen auf die Rückseite der Einbaufläche 2 ab. Die an den einzelnen Vorderkanten 4 gebildeten Wirbel verhalten sich weitgehend statisch, verändern daher ihre Lage nicht. Jedes Wirbelfeld bildet durch seine Rotation eine Strömungskomponente quer zur Hauptströmungsrichtung des Gases, die durch den damit verbundenen Impulsaustausch quer zur Strömungsrichtung eine gute Vermischung des Gasgemisches zur Folge hat. Verstärkt wird die Vermischung noch durch die besonders kompakte Anordnung der Einbauflächen 2 jeder Reihe, in dem sich einander benachbarte Einbauflächen 2 in Bezug auf die Hauptströmungsrichtung 3 teilweise überdecken. Diese Überdeckung ist in Figur 2 mit dem Bezugszeichen 5 bezeichnet und schraffiert eingezeichnet.The free flow around, directed against the flow leading edges 4 of the circular disk-shaped in the embodiment of the installation surfaces 2 have both a main flow direction, as well as a transverse thereto extending component. Further, since each mounting surface 2 is arranged at an acute angle to the main flow direction 3 in the flow channel, formed at each leading edge 4 of the mounting surfaces 2 vortex fields, which propagate in the form of a circle in the shape of a circle. In this case, the individual vortices roll inward on the back of the mounting surface 2. The vortices formed at the individual leading edges 4 behave largely statically, therefore do not change their position. By virtue of its rotation, each vortex field forms a flow component transverse to the main flow direction of the gas, which results in a good mixing of the gas mixture as a result of the associated momentum exchange transverse to the flow direction. The mixing is further enhanced by the particularly compact arrangement of the mounting surfaces 2 of each row, in which adjacent mounting surfaces 2 partially overlap with respect to the main flow direction 3. This overlap is indicated in Figure 2 by the reference numeral 5 and hatched drawn.

In Figur 1 ist mit v1 das Geschwindigkeitsprofil der Gasströmung beim Eintritt in die Mischstrecke bezeichnet. Dieses Geschwindigkeitsprofil ist, etwa aufgrund einer vorangehenden Umlenkung der Gasströmung, ungleichmäßig. Wird einer ersten Reihe 6 von Einbauflächen 2 eine zweite Reihe 7 von Einbauflächen 2 nachgeordnet, und sind die Anstellwinkel α' der Einbauflächen der zweiten Reihe 7 entgegengesetzt zu den Anstellwinkeln α der Einbauflächen der ersten Reihe 6, läßt sich beim Austritt aus der Mischstrecke eine Vergleichmäßigung des Geschwindigkeitsprofils erzielen, wie dies in Figur 1 mit dem Geschwindigkeitsprofil v2 eingetragen ist.In FIG. 1, v 1 denotes the velocity profile of the gas flow on entering the mixing section. This velocity profile is nonuniform, due to, for example, a prior deflection of the gas flow. If a second row 7 of installation surfaces 2 is arranged downstream of a first row 6 of installation surfaces 2, and if the angles of incidence α 'of the installation surfaces of the second row 7 are opposite to the angles α of the installation surfaces of the first row 6, a homogenization can be achieved on exiting the mixing section achieve the velocity profile, as shown in Figure 1 with the velocity profile v 2 .

Beim Ausführungsbeispiel sind die Einbauflächen 2 jeweils als runde Scheiben gestaltet. In gleicher Weise können jedoch als Wirbeleinbauflächen auch Scheiben mit deltaförmiger bzw. dreieckiger Grundform verwendet werden, oder elliptische oder parabelförmige Scheiben. Auch solche Scheiben besitzen symmetrisch und jeweils schräg zur Mittelebene angeordnete Vorderkanten, wie sie für das Entstehen von Vorderkantenwirbeln entscheidend sind.In the embodiment, the mounting surfaces 2 are each designed as round discs. In the same way, however, disks with a delta-shaped or triangular basic shape, or elliptical or parabolic disks may also be used as the swirl mounting surfaces. Such discs also have symmetrical and each inclined to the center plane arranged leading edges, as they are crucial for the emergence of leading edge vortices.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Verengungnarrowing
22
Einbauflächemounting surface
33
HauptströmungsrichtungMain flow direction
44
Vorderkanteleading edge
55
Überdeckungcoverage
66
Reihe von EinbauflächenRow of installation surfaces
77
Reihe von EinbauflächenRow of installation surfaces
BB
Breite des StrömungskanalsWidth of the flow channel
DD
Dicke des StrömungskanalsThickness of the flow channel
v1 v 1
Geschwindigkeitsprofil beim EintrittSpeed profile on entry
v2 v 2
Geschwindigkeitsprofil beim AustrittSpeed profile at the exit
ÜÜ
Überdeckungcoverage
αα
Anstellwinkelangle of attack
α'α '
Anstellwinkelangle of attack

Claims (5)

  1. Mixer for mixing gases and other Newtonian fluids, with a flow duct and built-in surfaces (2) disposed therein and influencing the flow, wherein the built-in surfaces are vortex-generating surfaces with front edges (4) around which the fluids freely flow, are directed against the flow and the path of which comprises both a component extending in the main flow direction (3) of the gas and one extending transversely thereto,
    characterised in that a plurality of like built-in surfaces (2) are disposed in a row (6) substantially transversely to the main flow direction (3), and that adjacent built-in surfaces (2) partly overlap in relation to the main flow direction (3).
  2. Mixer according to Claim 1, characterised by an additional row (7) of built-in surfaces (2) which is disposed at a spacing after the row (6), wherein the angles of incidence (α') of the built-in surfaces of the additional row (7) are opposite to the angles of incidence (α) of the built-in surfaces of the first row (6).
  3. Mixer according to Claim 1 or Claim 2, characterised in that the angle of incidence (α) of the built-in surfaces (2) is between 40° and 80°, preferably 60°.
  4. Mixer according to any one of Claims 1 to 3, characterised in that the built-in surfaces (2) are round, elliptical or triangular discs.
  5. Mixer according to any one of Claims 1 to 4, characterised in that the flow duct has a substantially rectangular cross section with a ratio of width (B) to thickness (D) of B/D ≥ 2, wherein the row (6, 7) defined by the built-in surfaces (2) extends in the direction of the width (B).
EP00112874A 2000-06-19 2000-06-19 Mixer for mixing gases and other Newtonian liquids Expired - Lifetime EP1170054B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
PT00112874T PT1170054E (en) 2000-06-19 2000-06-19 MIXER FOR MIXING GASES AND OTHER NEWTONIAN FLUIDS
EP00112874A EP1170054B1 (en) 2000-06-19 2000-06-19 Mixer for mixing gases and other Newtonian liquids
AT00112874T ATE231738T1 (en) 2000-06-19 2000-06-19 MIXER FOR MIXING GASES AND OTHER NEWTONIAN LIQUIDS
ES00112874T ES2190920T3 (en) 2000-06-19 2000-06-19 MIXER FOR GAS MIXING AND OTHER NEWTONIAN LIQUIDS.
DE50001174T DE50001174D1 (en) 2000-06-19 2000-06-19 Mixer for mixing gases and other Newtonian liquids
DK00112874T DK1170054T3 (en) 2000-06-19 2000-06-19 Mixer for mixing gases and other Newtonian fluids
CA002350944A CA2350944C (en) 2000-06-19 2001-06-18 Mixer for mixing gases and other newtonian liquids
MXPA01006232A MXPA01006232A (en) 2000-06-19 2001-06-18 Mixer for mixing gases and other newtonian liquids.
US09/884,682 US6615507B2 (en) 2000-06-19 2001-06-19 Mixer for mixing gases and other newton liquids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00112874A EP1170054B1 (en) 2000-06-19 2000-06-19 Mixer for mixing gases and other Newtonian liquids

Publications (2)

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EP1170054A1 EP1170054A1 (en) 2002-01-09
EP1170054B1 true EP1170054B1 (en) 2003-01-29

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Family Applications (1)

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EP00112874A Expired - Lifetime EP1170054B1 (en) 2000-06-19 2000-06-19 Mixer for mixing gases and other Newtonian liquids

Country Status (9)

Country Link
US (1) US6615507B2 (en)
EP (1) EP1170054B1 (en)
AT (1) ATE231738T1 (en)
CA (1) CA2350944C (en)
DE (1) DE50001174D1 (en)
DK (1) DK1170054T3 (en)
ES (1) ES2190920T3 (en)
MX (1) MXPA01006232A (en)
PT (1) PT1170054E (en)

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EP1568410B1 (en) 2004-02-27 2010-05-05 Haldor Topsoe A/S Apparatus for mixing fluid streams
US7448794B2 (en) 2004-02-27 2008-11-11 Haldor Topsoe A/S Method for mixing fluid streams
PL1681090T3 (en) * 2005-01-17 2007-10-31 Balcke Duerr Gmbh Apparatus and method for mixing of a fluid flow in a flow channel
US8010236B2 (en) * 2007-10-30 2011-08-30 Babcock Power Environmental Inc. Adaptive control system for reagent distribution control in SCR reactors
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US8501131B2 (en) 2011-12-15 2013-08-06 General Electric Company Method and apparatus to inject reagent in SNCR/SCR emission system for boiler
TW201417869A (en) * 2012-11-09 2014-05-16 Tainan Hydraulics Lab Nat Cheng Kung University Mixing device
CN103877837B (en) * 2014-02-26 2016-01-27 中国科学院过程工程研究所 A kind of flue ozone distributor and arrangement thereof being applied to low-temperature oxidation denitration technology
GB2550130B (en) * 2016-05-09 2021-01-27 James Muggleton Kevin System including passive blender for use with gas from an unconventional source
CN111059880A (en) * 2020-01-10 2020-04-24 亳州学院 Snakegourd seed heat treatment integrated device and treatment method thereof

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Also Published As

Publication number Publication date
PT1170054E (en) 2003-06-30
EP1170054A1 (en) 2002-01-09
CA2350944A1 (en) 2001-12-19
CA2350944C (en) 2005-04-05
US6615507B2 (en) 2003-09-09
US20020020076A1 (en) 2002-02-21
MXPA01006232A (en) 2003-05-19
DE50001174D1 (en) 2003-03-06
ATE231738T1 (en) 2003-02-15
ES2190920T3 (en) 2003-09-01
DK1170054T3 (en) 2003-06-23

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