EP0800857B1 - Mixer tube for low viscosity fluids - Google Patents

Mixer tube for low viscosity fluids Download PDF

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Publication number
EP0800857B1
EP0800857B1 EP96810224A EP96810224A EP0800857B1 EP 0800857 B1 EP0800857 B1 EP 0800857B1 EP 96810224 A EP96810224 A EP 96810224A EP 96810224 A EP96810224 A EP 96810224A EP 0800857 B1 EP0800857 B1 EP 0800857B1
Authority
EP
European Patent Office
Prior art keywords
tube
accordance
mixer
constriction
mixing
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
EP96810224A
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German (de)
French (fr)
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EP0800857A1 (en
Inventor
Markus Fleischli
Gottlieb Schneider
Marc Bruno Dr. Wehrli
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.)
Sulzer Chemtech AG
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Sulzer Chemtech AG
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
Application filed by Sulzer Chemtech AG filed Critical Sulzer Chemtech AG
Priority to AT96810224T priority Critical patent/ATE246036T1/en
Priority to ES96810224T priority patent/ES2203673T3/en
Priority to DE59610627T priority patent/DE59610627D1/en
Priority to EP96810224A priority patent/EP0800857B1/en
Priority to TW086101299A priority patent/TW358039B/en
Priority to JP9036291A priority patent/JPH09276678A/en
Priority to US08/808,380 priority patent/US5813762A/en
Priority to KR1019970006982A priority patent/KR100481930B1/en
Priority to CA002199332A priority patent/CA2199332C/en
Priority to MXPA/A/1997/002575A priority patent/MXPA97002575A/en
Priority to PL97319395A priority patent/PL182950B1/en
Priority to CZ19971091A priority patent/CZ291563B6/en
Priority to CN97109584A priority patent/CN1078817C/en
Priority to BR9701784-1A priority patent/BR9701784A/en
Publication of EP0800857A1 publication Critical patent/EP0800857A1/en
Application granted granted Critical
Publication of EP0800857B1 publication Critical patent/EP0800857B1/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
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • 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

Definitions

  • the invention relates to a mixing tube for low viscosity Fluids, in particular for fluids with suspended contained solids, according to the preamble of claim 1.
  • This device includes Mixing elements in a tube, each consisting of two outer segments and at least one inner segment consist. The segments are at one end or sides with the housing gap-free connected while their other ends are at a distance end in front of the pipe wall. Adjacent segments intersect with a gap at each intersection remains. The mixing takes place essentially within the mixing elements by a crosswise deflection individual partial flows.
  • the object of the invention is to provide a mixing tube to create static internals in terms of known static mixing device cheaper can be produced.
  • This task is claimed by the 1 defined mixing tube solved, in which the mixture due to the bottlenecks mentioned in the claim and the subsequent bottlenecks of mixed routes.
  • a Such a mixing device is also for low-viscosity Liquids that do not contain solids can be used.
  • the mixing tube according to the invention for low-viscosity fluids contains plate-shaped elements attached to or on individual parts of the tube, its cross section partially cover.
  • the bottlenecks left open by the elements each comprise at least one gap-shaped area, with a longitudinal extension of this gap, that of Pipe wall to pipe wall through the pipe axis or from the Pipe wall through the pipe axis to a second section runs.
  • the gap closes with the pipe axis Angles in the range between around 20 and 60 °, preferably between 35 and 45 °, a.
  • the one Length in the range of 1 to 10 pipe diameters.
  • the bottleneck or bottlenecks of the invention Mixing devices are shaped and arranged such that in the flowing fluid as it passes through a Bottleneck two opposite vortices form. While of the flow through the mixing section results in Whirl a partial mixing. Compared to the known mixing device are fewer mixing elements and for each mixing element only two segments are required to create one to achieve largely the same good mixing effect. However, a longer pipe is required. Further causes the mixing device according to the invention lower pressure drop.
  • the dependent claims 2 to 11 relate to advantageous Embodiments of the mixing tube according to the invention.
  • the Claim 12 relates to the use of Mixing tube.
  • Figures 1 and 2 represent an inventive Mixing tube 1 for low-viscosity fluids.
  • the tube wall 10 is only indicated by dash-dotted lines.
  • the circular Pipe has a diameter D.
  • the mixing pipe 1 contains plate-shaped elements 2 as internals, the individual Place the tube 1 partially cover its cross section and create bottlenecks 3.
  • the elements 2 are in elliptical surfaces with the main axes d and e arranged.
  • the bottleneck 3 released in the elements 2 includes two sections 31 and 32: a wide gap 31, the from the pipe wall 10 through the pipe axis c to the second portion 32 extends along the axis e, and a flow opening 32 adjoining the tube wall 10 of an elongated, here crescent-like shape, the is arranged transversely to the first partial region 31.
  • the shape of the second partial area 32 can also be, for example be lenticular.
  • the axis e (or the gap 31) closes with the Pipe axis c an angle ⁇ in the range between around 20 and 60 °, preferably between 35 and 45 °.
  • the second section 32 is downstream after the gap 31 arranged. After the bottleneck 3 there is a mixed section 4th
  • edges these segments essentially include the following Sections: an edge piece a with the shape of a elliptical arc adjacent to tube wall 10; on straight edge piece s, which forms a boundary with the gap 31; and an edge piece b that connects to the second partial area 32 of the bottleneck 3.
  • Between the tube wall 10 and the arcuate edge a can be a small gap located at individual points Connecting means, for example welding material, are bridged.
  • the elliptical border can, for example be approximated by straight pieces.
  • Edge piece s can also be a curved one.
  • the flowing fluid is in Fig.1 by arrows 5, 5 ' indicated.
  • the bottleneck 3 induces two in the flow opposite vortices that are projected onto a Cross-sectional area are indicated with arrows 6, 6 '.
  • the gap 31 is essentially trapezoidal (corner points A, B, B 'and A'); it widens towards the second Subarea 32 of the bottleneck 3. With this slit shape creates an optimal pair of vertebrae 6, 6 '. So that two Bottleneck is 3 mirror-symmetrical; the plane of symmetry lies on the pipe axis c.
  • the plate-shaped elements associated with a bottleneck 3 2 are in the embodiment of Figures 1 and 2 in arranged on one level. You can be together with the Manufacture connecting web 23 from a piece of sheet metal. Figure 3 shows how these elements 2 material-saving from one Strips of sheet metal can be cut out.
  • the plate-shaped elements 2 can instead of just be curved or kinked.
  • bottlenecks 3 in the mixing tube 1 there are at least two bottlenecks 3 in the mixing tube 1 provided, one each to a first bottleneck 3 adjacent, downstream bottleneck 3 ' outside the mixing section 4 at a distance m of around 3 to 5 pipe diameters D is arranged.
  • the free space between adjacent bottlenecks 3, 3 ' thus has a length of around 2 to 4 pipe diameters D. on.
  • the gaps 31 of adjacent bottlenecks 3, 3 ' are transverse arranged to each other.
  • Figures 4 to 8 represent further embodiments possible bottlenecks 3.
  • the two are in Fig.4 Segments 21 and 22, which have the same shape, are angular arranged to each other.
  • the shape of the segment 21 or 22 can be seen in Fig. 5.
  • the segments 21 and 22 can of course also by a web 23 - for example, as shown in dashed lines - connected his.
  • Figures 6 and 7 show bottlenecks 3 for Mixing tubes 1 according to the invention, their cross sections are square or rectangular.
  • Fig. 6 also shows that a web 23 at a different location than at the Border between the two sections of the bottleneck 3 can be arranged.
  • the web 23 can be, for example Be a rod with a circular cross-section.
  • the fifth exemplary embodiment according to FIG. 8 shows one Bottleneck 3, which only consists of a gap-shaped area 31 consists.
  • the area 31 can be trapezoidal (with two curved sides AA ', BB') and thereby in or against expand the direction of flow.
  • the mixing tube 1 according to the invention can mix a Fluids with suspended solids are used become. Especially if the solids are fibrous, this use is advantageous.

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

Abstract

The static mixing tube (1) is suitable for low viscosity fluids, especially containing suspended solids, and has plates (2) in individual locations of the tube, each partly covering the cross section. Through the plates, open narrow passages (3) each include a gap region (31) running from wall to wall through the tube axis (c), or running from wall to wall though the tube axis to a second partial region (32). The gap encloses an angle of 20-60 degrees , preferably 35-45 degrees with the tube axis. There is also a mixing length (4).

Description

Die Erfindung betrifft ein Mischrohr für niedrigviskose Fluide, insbesondere für Fluide mit suspendiert enthaltenen Feststoffen, gemäss Oberbegriff von Anspruch 1.The invention relates to a mixing tube for low viscosity Fluids, in particular for fluids with suspended contained solids, according to the preamble of claim 1.

Aus der CH-PS 669 336 (= P.6005) ist eine statische Mischvorrichtung bekannt, mit der Feststoffteilchen enthaltende Fluide vermischt werden können, ohne dass Verstopfungen entstehen. Diese Vorrichtung umfasst Mischelemente in einem Rohr, die jeweils aus zwei äusseren Segmenten und mindestens einem inneren Segment bestehen. Die Segmente sind an ihren einen Enden beziehungsweise Seiten mit dem Gehäuse spaltfrei verbunden, während ihre anderen Enden in einem Abstand vor der Rohrwand enden. Benachbarte Segmente kreuzen sich, wobei an jeder Kreuzungsstelle ein Zwischenraum frei bleibt. Die Mischung erfolgt im wesentlichen innerhalb der Mischelemente durch ein kreuzweises Umlenken einzelner Teilströme.CH-PS 669 336 (= P.6005) is a static one Known mixing device with the solid particles containing fluids can be mixed without Blockages occur. This device includes Mixing elements in a tube, each consisting of two outer segments and at least one inner segment consist. The segments are at one end or sides with the housing gap-free connected while their other ends are at a distance end in front of the pipe wall. Adjacent segments intersect with a gap at each intersection remains. The mixing takes place essentially within the mixing elements by a crosswise deflection individual partial flows.

Aufgabe der Erfindung ist es, ein Mischrohr mit statischen Einbauten zu schaffen, das hinsichtlich der bekannten statischen Mischvorrichtung kostengünstiger herstellbar ist. Diese Aufgabe wird durch das in Anspruch 1 definierte Mischrohr gelöst, bei dem die Mischung aufgrund der im Anspruch genannten Engpässe und der an die Engpässe anschliessenden Mischstrecken erfolgt. Eine derartige Mischvorrichtung ist auch für niedrigviskose Flüssigkeiten verwendbar, die keine Feststoffe enthalten.The object of the invention is to provide a mixing tube to create static internals in terms of known static mixing device cheaper can be produced. This task is claimed by the 1 defined mixing tube solved, in which the mixture due to the bottlenecks mentioned in the claim and the the subsequent bottlenecks of mixed routes. A Such a mixing device is also for low-viscosity Liquids that do not contain solids can be used.

Das erfindungsgemässe Mischrohr für niedrigviskose Fluide enthält plattenförmige Elemente, die an einer oder an einzelnen Stellen des Rohrs dessen Querschnitt teilweise abdecken. Die durch die Elemente freigelassenen Engpässe umfassen jeweils mindestens einen spaltförmigen Bereich, mit einer Längserstreckung dieses Spalts, die von Rohrwand zu Rohrwand durch die Rohrachse oder von der Rohrwand durch die Rohrachse zu einem zweiten Teilbereich verläuft. Der Spalt schliesst mit der Rohrachse einen Winkel im Bereich zwischen rund 20 und 60°, vorzugsweise zwischen 35 und 45°, ein. Nach dem Engpass ist in Strömungsrichtung eine Mischstrecke vorgesehen, die eine Länge im Bereich von 1 bis 10 Rohrdurchmessern aufweist.The mixing tube according to the invention for low-viscosity fluids contains plate-shaped elements attached to or on individual parts of the tube, its cross section partially cover. The bottlenecks left open by the elements each comprise at least one gap-shaped area, with a longitudinal extension of this gap, that of Pipe wall to pipe wall through the pipe axis or from the Pipe wall through the pipe axis to a second section runs. The gap closes with the pipe axis Angles in the range between around 20 and 60 °, preferably between 35 and 45 °, a. After the bottleneck is in Flow direction provided a mixing section, the one Length in the range of 1 to 10 pipe diameters.

Der Engpass oder die Engpässe der erfindungsgemässen Mischvorrichtung sind derart geformt und angeordnet, dass in dem strömenden Fluid beim Durchtritt durch einen Engpass sich zwei gegenläufige Wirbel ausbilden. Während des Durchströmens der Mischstrecke ergibt sich in den Wirbeln eine teilweise Durchmischung. Verglichen mit der bekannten Mischeinrichtung sind weniger Mischelemente und pro Mischelement jeweils nur zwei Segmente nötig, um eine weitgehend gleich gute Mischwirkung zu erzielen. Allerdings wird ein längeres Rohr benötigt. Ferner verursacht die erfindungsgemässe Mischvorrichtung einen niedrigeren Druckverlust.The bottleneck or bottlenecks of the invention Mixing devices are shaped and arranged such that in the flowing fluid as it passes through a Bottleneck two opposite vortices form. While of the flow through the mixing section results in Whirl a partial mixing. Compared to the known mixing device are fewer mixing elements and for each mixing element only two segments are required to create one to achieve largely the same good mixing effect. However, a longer pipe is required. Further causes the mixing device according to the invention lower pressure drop.

Die abhängigen Ansprüche 2 bis 11 betreffen vorteilhafte Ausführungsformen des erfindungsgemässen Mischrohrs. Der Anspruch 12 bezieht sich auf die Verwendung des Mischrohrs.The dependent claims 2 to 11 relate to advantageous Embodiments of the mixing tube according to the invention. The Claim 12 relates to the use of Mixing tube.

Nachfolgend wird die Erfindung anhand der Zeichnungen erläutert. Es zeigen:

Fig. 1
ein erstes Ausführungsbeispiel der Einbaute eines erfindungsgemässen Mischrohrs mit einem kreisförmigen Rohrquerschnitt,
Fig. 2
zwei benachbarte Einbauten des Typs gemäss Fig.1,
Fig. 3
mehrere, aus einem Blechstreifen herausgeschnittene Einbauten,
Fig. 4
ein zweites Ausführungsbeispiel,
Fig. 5
ein Segment zu der Einbaute der Fig.4,
Fig. 6
ein drittes Ausführungsbeispiel, nämlich ein Rohr mit rechteckigem Querschnitt,
Fig. 7
eine Variante zu dem Beispiel der Fig.6 und
Fig. 8
ein fünftes Ausführungsbeispiel.
The invention is explained below with reference to the drawings. Show it:
Fig. 1
a first embodiment of the installation of a mixing tube according to the invention with a circular tube cross section,
Fig. 2
two adjacent internals of the type shown in FIG. 1,
Fig. 3
several internals cut out of a metal strip,
Fig. 4
a second embodiment,
Fig. 5
a segment to the built-in of Figure 4,
Fig. 6
a third embodiment, namely a tube with a rectangular cross section,
Fig. 7
a variant of the example of Fig.6 and
Fig. 8
a fifth embodiment.

Die Figuren 1 un 2 stellen ein erfindungsgemässes Mischrohr 1 für niedrigviskose Fluide dar. Die Rohrwand 10 ist nur strichpunktiert angedeutet. Das kreisförmige Rohr hat einen Durchmesser D. Das Mischrohr 1 enthält plattenförmige Elemente 2 als Einbauten, die an einzelnen Stellen des Rohrs 1 dessen Querschnitt teilweise abdecken und so Engpässe 3 herstellen. Die Elemente 2 sind in elliptischen Flächen mit den Hauptachsen d und e angeordnet. Figures 1 and 2 represent an inventive Mixing tube 1 for low-viscosity fluids. The tube wall 10 is only indicated by dash-dotted lines. The circular Pipe has a diameter D. The mixing pipe 1 contains plate-shaped elements 2 as internals, the individual Place the tube 1 partially cover its cross section and create bottlenecks 3. The elements 2 are in elliptical surfaces with the main axes d and e arranged.

Der in den Elementen 2 freigelassene Engpass 3 umfasst zwei Teilbereiche 31 und 32: einen breiten Spalt 31, der sich von der Rohrwand 10 durch die Rohrachse c zu dem zweiten Teilbereich 32 längs der Achse e erstreckt, und eine an die Rohrwand 10 angrenzende Durchflussöffnung 32 von einer länglichen, hier halbmondähnlichen Form, die quer zu dem ersten Teilbereich 31 angeordnet ist. Die Form des zweiten Teilbereichs 32 kann auch beispielsweise linsenförmig sein.The bottleneck 3 released in the elements 2 includes two sections 31 and 32: a wide gap 31, the from the pipe wall 10 through the pipe axis c to the second portion 32 extends along the axis e, and a flow opening 32 adjoining the tube wall 10 of an elongated, here crescent-like shape, the is arranged transversely to the first partial region 31. The The shape of the second partial area 32 can also be, for example be lenticular.

Die Achse e (oder der Spalt 31) schliesst mit der Rohrachse c einen Winkel ϕ ein, der im Bereich zwischen rund 20 und 60°, vorzugsweise zwischen 35 und 45°, liegt. Der zweite Teilbereich 32 ist stromabwärts nach dem Spalt 31 angeordnet. Nach dem Engpass 3 folgt eine Mischstrecke 4.The axis e (or the gap 31) closes with the Pipe axis c an angle ϕ in the range between around 20 and 60 °, preferably between 35 and 45 °. The second section 32 is downstream after the gap 31 arranged. After the bottleneck 3 there is a mixed section 4th

In der Normalprojektion auf einen Rohrquerschnitt beträgt die offene Fläche des Engpasses 3 rund 50 - 70% der Rohrquerschnittsfläche, wobei dem Spalt rund 60 - 70% der offenen Fläche zugeordnet ist. Bei diesen Verhältnissen ist der Materialbedarf gering und die Strömung des zu mischenden Fluids erleidet lediglich kleine Druckverluste.In the normal projection on a pipe cross section the open area of the bottleneck 3 around 50 - 70% of the Pipe cross-sectional area, with the gap around 60 - 70% of the open area is assigned. With these conditions the material requirement is low and the flow of the mixing fluids suffer only small Pressure losses.

Die plattenförmigen Elemente 2 eines Engpasses 3 bilden eine Anordnung mit zwei Segmenten 21 und 22. Die Ränder dieser Segmente umfassen im wesentlichen jeweils folgende Teilstücke: ein Randstück a mit der Form eines elliptischen Bogens, das an die Rohrwand 10 angrenzt; ein gerades Randstück s, das eine Grenze zum Spalt 31 bildet; und ein Randstück b, das an den zweiten Teilbereich 32 des Engpasses 3 angrenzt. Zwischen der Rohrwand 10 und dem bogenförmigen Rand a kann sich eine kleine Lücke befinden, die an einzelnen Stellen durch Verbindungsmittel, beispielsweise Schweissmaterial, überbrückt sind. Der elliptische Rand kann beispielsweise durch gerade Stücke angenähert sein. Anstelle des geraden Randstücks s kann auch ein gekrümmtes vorliegen.Form the plate-shaped elements 2 of a bottleneck 3 an arrangement with two segments 21 and 22. The edges these segments essentially include the following Sections: an edge piece a with the shape of a elliptical arc adjacent to tube wall 10; on straight edge piece s, which forms a boundary with the gap 31; and an edge piece b that connects to the second partial area 32 of the bottleneck 3. Between the tube wall 10 and the arcuate edge a can be a small gap located at individual points Connecting means, for example welding material, are bridged. The elliptical border can, for example be approximated by straight pieces. Instead of the straight one Edge piece s can also be a curved one.

Relativ gute Mischwirkungen erhält man auch, wenn die Segmente 21 und 22 stark verkürzt sind und die offene Fläche des Engpasses 75% beträgt. Für solche Segmente 21, 22 ist die Mischwirkung weniger gut; dafür ist der Druckverlust geringer. Dies gilt generell: grössere offene Fläche bedeutet einen geringen Druckverlust und umgekehrt.Relatively good mixing effects can also be obtained if the Segments 21 and 22 are greatly shortened and the open ones Bottleneck area is 75%. For such segments 21, 22 the mixing effect is less good; that's what Pressure loss less. This generally applies: larger ones open area means a low pressure drop and vice versa.

In der Ausführungsform der Figuren 1 und 2 sind die beiden Segmente 21 und 22 durch einen schmalen Steg 23 miteinander verbunden, der auf der Grenze zwischen den zwei Teilbereichen 31 und 32 des Engpasses 3 liegt. Mit diesem Steg 23 ergibt sich eine hinsichtlich der Konstruktion günstige Stabilisierung, die es erlaubt, für die plattenförmigen Elemente 2 eine kleinere Plattendicke zu wählen, als wenn der Steg 23 nicht vorhanden wäre.In the embodiment of Figures 1 and 2 are the two segments 21 and 22 through a narrow web 23 linked together on the border between the two partial areas 31 and 32 of the bottleneck 3. With this web 23 results in a Construction favorable stabilization that allows for the plate-shaped elements 2 have a smaller plate thickness to choose as if the web 23 were not present.

Das strömende Fluid ist in Fig.1 durch Pfeile 5, 5' angedeutet. Der Engpass 3 induziert in der Strömung zwei gegenläufige Wirbel, die in der Projektion auf eine Querschnittsfläche mit Pfeilen 6, 6' angedeutet sind.The flowing fluid is in Fig.1 by arrows 5, 5 ' indicated. The bottleneck 3 induces two in the flow opposite vortices that are projected onto a Cross-sectional area are indicated with arrows 6, 6 '.

Der Spalt 31 ist im wesentlichen trapezförmig (Eckpunkte A, B, B' und A'); er erweitert sich gegen den zweiten Teilbereich 32 des Engpasses 3 hin. Mit dieser Spaltform entsteht ein optimales Wirbelpaar 6, 6'. Damit sich zwei gleich starke Wirbel ergeben, ist der Engpass 3 spiegelsymmetrisch ausgebildet; die Symmetrieebene liegt auf der Rohrachse c.The gap 31 is essentially trapezoidal (corner points A, B, B 'and A'); it widens towards the second Subarea 32 of the bottleneck 3. With this slit shape creates an optimal pair of vertebrae 6, 6 '. So that two Bottleneck is 3 mirror-symmetrical; the plane of symmetry lies on the pipe axis c.

Die einem Engpass 3 zugeordneten plattenförmigen Elemente 2 sind beim Ausführungsbeispiel der Figuren 1 und 2 in einer Ebene angeordnet. Sie lassen sich zusammen mit dem Verbindungssteg 23 aus einem Stück Blech fertigen. Fig.3 zeigt, wie diese Elemente 2 materialsparend aus einem Streifen Blech ausgeschnitten werden können.The plate-shaped elements associated with a bottleneck 3 2 are in the embodiment of Figures 1 and 2 in arranged on one level. You can be together with the Manufacture connecting web 23 from a piece of sheet metal. Figure 3 shows how these elements 2 material-saving from one Strips of sheet metal can be cut out.

Die plattenförmigen Elemente 2 können statt eben auch gekrümmt oder geknickt sein.The plate-shaped elements 2 can instead of just be curved or kinked.

Im Mischrohr 1 sind mindestens zwei Engpässe 3 vorgesehen, wobei jeweils ein zu einem ersten Engpass 3 benachbarter, stromabwärts liegender Engpass 3' ausserhalb der Mischstrecke 4 in einem Abstand m von rund 3 bis 5 Rohrdurchmessern D angeordnet ist. Der einbautenfreie Raum zwischen benachbarten Engpässen 3, 3' weist somit ein Länge von rund 2 bis 4 Rohrdurchmesser D auf. Die Spalte 31 benachbarter Engpässe 3, 3' sind quer zueinander angeordnet.There are at least two bottlenecks 3 in the mixing tube 1 provided, one each to a first bottleneck 3 adjacent, downstream bottleneck 3 ' outside the mixing section 4 at a distance m of around 3 to 5 pipe diameters D is arranged. The free space between adjacent bottlenecks 3, 3 ' thus has a length of around 2 to 4 pipe diameters D. on. The gaps 31 of adjacent bottlenecks 3, 3 'are transverse arranged to each other.

Die Figuren 4 bis 8 stellen weitere Ausführungsformen möglicher Engpässe 3 dar. In Fig.4 sind die beiden Segmente 21 und 22, die gleich geformt sind, winkelig zueinander angeordnet. Die Form des Segments 21 bzw. 22 ist in Fig.5 zu sehen. Die Segmente 21 und 22 können selbstverständlich auch durch einen Steg 23 - beispielsweise wie gestrichelt dargestellt - verbunden sein.Figures 4 to 8 represent further embodiments possible bottlenecks 3. The two are in Fig.4 Segments 21 and 22, which have the same shape, are angular arranged to each other. The shape of the segment 21 or 22 can be seen in Fig. 5. The segments 21 and 22 can of course also by a web 23 - for example, as shown in dashed lines - connected his.

Die Figuren 6 und 7 zeigen Engpässe 3 für erfindungsgemässe Mischrohre 1, deren Querschnitte quadratisch oder rechteckig sind. Fig.6 zeigt zusätzlich, dass ein Steg 23 an einer anderen Stelle als an der Grenze zwischen den beiden Teilbereichen des Engpasses 3 angeordnet sein kann. Der Steg 23 kann beispielsweise ein Stab mit kreisförmigem Querschnitt sein. Figures 6 and 7 show bottlenecks 3 for Mixing tubes 1 according to the invention, their cross sections are square or rectangular. Fig. 6 also shows that a web 23 at a different location than at the Border between the two sections of the bottleneck 3 can be arranged. The web 23 can be, for example Be a rod with a circular cross-section.

Das fünfte Ausführungsbeispiel gemäss Fig. 8 zeigt einen Engpass 3, der nur aus einem spaltförmigen Bereich 31 besteht. Der Bereich 31 kann trapezförmig sein (mit zwei gekrümmten Seiten AA', BB') und sich dabei in oder gegen die Strömungsrichtung erweitern.The fifth exemplary embodiment according to FIG. 8 shows one Bottleneck 3, which only consists of a gap-shaped area 31 consists. The area 31 can be trapezoidal (with two curved sides AA ', BB') and thereby in or against expand the direction of flow.

Das erfindungsgemässe Mischrohr 1 kann das Mischen eines Fluids mit suspendiert enthaltenen Feststoffen verwendet werden. Besonders wenn die Feststoffe faserförmig sind, ist diese Verwendung vorteilhaft.The mixing tube 1 according to the invention can mix a Fluids with suspended solids are used become. Especially if the solids are fibrous, this use is advantageous.

Claims (12)

  1. Mixer tube (1) for low viscosity fluids, in particular for fluids with solid substances held in suspension, the mixer tube containing at least one mixer element (2) which comprises two plate-like segments (21, 22), which are optionally connected by at least one narrow bridge (23), wherein a constriction (3) which includes a gap (31) between the segments is formed by the segments (21, 22) in the tube (1), with a longitudinal extent of this gap (31) which extends from tube wall (10) to tube wall through the tube axis (c) or from the tube wall through the tube axis (c) to a second downstream partial region (32)of the constriction (3), and with the gap (31) subtending an angle to the tube axis in the range between about 20 and 60° and wherein a mixing path (4) free of inbuilt elements is provided after each mixing element in the direction of flow and has a length in the range of 1 to 10 tube diameters (D), with a through-flowing fluid forming two oppositely directed eddies in the mixing element free path (4)
  2. Mixer tube in accordance with claim 1 characterised in that the constriction (3) comprises two partial regions, namely the gap (31) which extends through the tube axis (c) to the second partial region (32), and the second partial region, which forms a through-flow opening bordering on the tube wall (10) of an elongate, for example half moon shaped or lens shaped form, with this through-flow opening being arranged transverse to the first partial region.
  3. Mixer tube in accordance with claim 2 characterised in that the edges of these segments each substantially comprising the following parts: an edge piece (a), in particular in the form of an elliptical arch which lies close to or at a small separation from the tube wall (10), an edge piece (s) which forms a boundary to the gap (31), and an edge piece (b) which borders on the second partial region (32) of the constriction.
  4. Mixer tube in accordance with claim 3 characterised in that the bridge or a bridge lies on the boundary between the two partial regions (31, 32) of the constriction (3).
  5. Mixer tube in accordance with one of the claims 1 to 4 characterised in that the gap (31) is substantially trapezoidal and diverges in the direction of flow.
  6. Mixer tube in accordance with one of the claims 1 to 5 characterised in that the constriction (3) is of mirror symmetry, with the plane of symmetry lying on the tube axis (c).
  7. Mixer tube in accordance with one of the claims 1 to 6 characterised in that the plate-shaped segments (21, 22) associated with the constriction (3) are arranged in a plane.
  8. Mixer tube in accordance with claims 7 and 4 characterised in that the plate-shaped segments (21, 22) arranged in a plane are produced together with the connecting bridge (23) from a single piece of sheet metal.
  9. Mixer tube in accordance with one of the claims 1 to 8 characterised in that at least two mixing elements (2) are provided, with the respectively adjacent downstream constriction (3') being arranged outside the mixing path (4) at a spacing (m) of around 3 to 5 tube diameters (D) or with the insert-free space between the adjacent constrictions having a length of about 2 to 4 tube diameters.
  10. Mixer tube in accordance with claim 9 characterised in that the gaps (31) of adjacent mixing elements (2) are arranged transverse to one another.
  11. Mixer tube in accordance with one of the claims 1 to 10 characterised in that, in a normal projection onto a tube cross-section, the open area of the constriction (3) amounts to about 50 - 75% of the tube cross-sectional area of the tube.
  12. Use of a mixer tube (1) in accordance with one of the claims 1 to 11 for the mixing of a fluid with solid substances held in suspension, with the solid substances being in particular fibrous.
EP96810224A 1996-04-12 1996-04-12 Mixer tube for low viscosity fluids Expired - Lifetime EP0800857B1 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
AT96810224T ATE246036T1 (en) 1996-04-12 1996-04-12 MIXING TUBE FOR LOW VISCOSITY FLUIDS
ES96810224T ES2203673T3 (en) 1996-04-12 1996-04-12 MIXING TUBE FOR LOW VISCOSITY FLUIDS.
DE59610627T DE59610627D1 (en) 1996-04-12 1996-04-12 Mixing tube for low-viscosity fluids
EP96810224A EP0800857B1 (en) 1996-04-12 1996-04-12 Mixer tube for low viscosity fluids
TW086101299A TW358039B (en) 1996-04-12 1997-02-04 Mixer tube for low viscosity fluids and use thereof
JP9036291A JPH09276678A (en) 1996-04-12 1997-02-20 Mixer pipe for low viscosity fluid
US08/808,380 US5813762A (en) 1996-04-12 1997-02-28 Mixer tube for low viscosity fluids
KR1019970006982A KR100481930B1 (en) 1996-04-12 1997-03-04 Low Viscosity Fluid Mixer Tubes
CA002199332A CA2199332C (en) 1996-04-12 1997-03-06 Mixer tube for low viscosity fluids
MXPA/A/1997/002575A MXPA97002575A (en) 1996-04-12 1997-04-09 Mixing pipe for viscosity fluids b
PL97319395A PL182950B1 (en) 1996-04-12 1997-04-09 Mixing tube for low-viscosity fluids
CZ19971091A CZ291563B6 (en) 1996-04-12 1997-04-10 Mixer tube for low-viscosity fluids
CN97109584A CN1078817C (en) 1996-04-12 1997-04-11 Pipe for mixing low viscosity liquid
BR9701784-1A BR9701784A (en) 1996-04-12 1997-04-11 Mixing tube for low viscosity fluids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96810224A EP0800857B1 (en) 1996-04-12 1996-04-12 Mixer tube for low viscosity fluids

Publications (2)

Publication Number Publication Date
EP0800857A1 EP0800857A1 (en) 1997-10-15
EP0800857B1 true EP0800857B1 (en) 2003-07-30

Family

ID=8225586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810224A Expired - Lifetime EP0800857B1 (en) 1996-04-12 1996-04-12 Mixer tube for low viscosity fluids

Country Status (13)

Country Link
US (1) US5813762A (en)
EP (1) EP0800857B1 (en)
JP (1) JPH09276678A (en)
KR (1) KR100481930B1 (en)
CN (1) CN1078817C (en)
AT (1) ATE246036T1 (en)
BR (1) BR9701784A (en)
CA (1) CA2199332C (en)
CZ (1) CZ291563B6 (en)
DE (1) DE59610627D1 (en)
ES (1) ES2203673T3 (en)
PL (1) PL182950B1 (en)
TW (1) TW358039B (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19748383C2 (en) * 1997-11-03 2000-11-23 U & A Gmbh Static mixer
EP0918146A1 (en) 1997-11-19 1999-05-26 Sulzer Chemtech AG Apparatus for decomposing pollutants of exhaust gases by means of catalytic converters
EP0956906A3 (en) 1998-03-25 2000-11-08 Shinyou Technolozies Inc. Fluid mixing-jetting apparatus, fluid mixer and snowmaker
ES2244441T3 (en) 1999-04-19 2005-12-16 Sulzer Chemtech Ag TORBELLINOS STATIC MIXERS AND EMPLOYMENT METHOD FOR THE SAME.
GB9910738D0 (en) * 1999-05-11 1999-07-07 Statiflo International Limited Static miker
FR2807336B1 (en) * 2000-04-07 2002-12-13 Pour Le Dev De L Antipollution STATIC MIXER
AU2001267187A1 (en) * 2000-06-06 2001-12-17 Trojan Technologies Inc Fluid mixing device
US6830370B1 (en) * 2000-11-28 2004-12-14 Ohr Co., Ltd. Cavitation generating device and fluid mixing device using the device
EP1412078B1 (en) 2001-08-02 2008-10-08 LG Life Sciences Limited Processes for the production of amino-protected derivatives of 4-aminomethylene-pyrrolidin-3-one, gemifloxacin or a salt thereof
NO318636B1 (en) * 2002-02-08 2005-04-18 Norsk Hydro As Device for transformation of gas / liquid stream into layered stream
US20060285433A1 (en) * 2005-06-20 2006-12-21 Jing-Tang Yang Fluidic mixer of serpentine channel incorporated with staggered sudden-expansion and convergent cross sections
US7213617B2 (en) * 2005-07-12 2007-05-08 Deere & Company Airflow divider with shutoff
TWI426952B (en) * 2006-06-27 2014-02-21 Sulzer Chemtech Ag A static mixer having a vane pair for the generation of a flow swirl in the direction of a passage flow
TWI417135B (en) * 2007-06-22 2013-12-01 Sulzer Chemtech Ag Static mixing element
US8397495B2 (en) * 2008-06-26 2013-03-19 Tenneco Automotive Operating Company Inc. Exhaust gas additive/treatment system and mixer for use therein
US9347355B2 (en) * 2011-09-08 2016-05-24 Tenneco Automotive Operating Company Inc. In-line flow diverter
EP2623181B1 (en) * 2012-02-03 2016-04-13 Alstom Technology Ltd Arrangement for injecting a reducing agent into a flue gas
DE102012008732A1 (en) * 2012-05-04 2013-11-07 Xylem Water Solutions Herford GmbH Mixing device for UV water treatment plants with open channel
CN104560111B (en) * 2013-10-25 2017-08-25 中国石油化工股份有限公司 Heat-transfer pipe and use its pyrolysis furnace
JP6382041B2 (en) * 2014-09-10 2018-08-29 旭有機材株式会社 Fluid mixer
JP2016107218A (en) * 2014-12-08 2016-06-20 旭有機材工業株式会社 Fluid mixer and fluid mixer-attached confluent joint
EP3034159B1 (en) * 2014-12-18 2020-11-04 The Procter and Gamble Company Static mixer and method of mixing fluids
US10729600B2 (en) 2015-06-30 2020-08-04 The Procter & Gamble Company Absorbent structure
US11376168B2 (en) 2015-11-04 2022-07-05 The Procter & Gamble Company Absorbent article with absorbent structure having anisotropic rigidity
WO2017079599A1 (en) 2015-11-04 2017-05-11 The Procter & Gamble Company Absorbent structure
US11441521B2 (en) 2017-08-15 2022-09-13 Volvo Truck Corporation Vaned valve for exhaust gas recirculation line
EP3479893A1 (en) 2017-11-06 2019-05-08 Sulzer Chemtech AG An improved mixer duct and a process of using it

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3409187A (en) * 1965-10-11 1968-11-05 Emil C. Socha Distributing spout
US4062524A (en) * 1973-06-06 1977-12-13 Bayer Aktiengesellschaft Apparatus for the static mixing of fluid streams
DE2522106C3 (en) * 1975-05-17 1982-04-15 Bayer Ag, 5090 Leverkusen Device for the continuous mixing of flowable substances and method for producing a mixing insert
DE2525020C3 (en) * 1975-06-05 1985-11-21 Basf Ag, 6700 Ludwigshafen Static mixer for fluids
US4040256A (en) * 1976-07-14 1977-08-09 The Dow Chemical Company Flume mixer
CH669336A5 (en) * 1985-12-11 1989-03-15 Sulzer Ag
US4813788A (en) * 1986-01-03 1989-03-21 Union Oil Company Of California Static, gravity-flow mixing apparatus for particulate matter
US4765204A (en) * 1986-09-03 1988-08-23 Koch Engineering Company, Inc. Method of manufacturing a motionless mixer
US4936689A (en) * 1988-07-11 1990-06-26 Koflo Corporation Static material mixing apparatus
US4929088A (en) * 1988-07-27 1990-05-29 Vortab Corporation Static fluid flow mixing apparatus
CH678284A5 (en) * 1988-11-03 1991-08-30 Sulzer Ag Static mixer assembly requiring no cleaning - in which inner face of tube segments bear ridges which cross each other diagonally with respect to tubular axis
ATE141827T1 (en) * 1991-07-30 1996-09-15 Sulzer Chemtech Ag MIXING DEVICE
JP3107877B2 (en) * 1991-08-19 2000-11-13 久夫 小嶋 Manufacturing method of static fluid mixer
JPH06182174A (en) * 1992-12-22 1994-07-05 Tonen Corp Fluid mixing apparatus
DE59309826D1 (en) * 1993-11-26 1999-11-11 Sulzer Chemtech Ag Winterthur Static mixing device
US5378063A (en) * 1993-12-02 1995-01-03 Tokyo Nisshin Jabara Co., Ltd. Static mixing module
JP3003581U (en) * 1994-02-16 1994-10-25 東京日進ジャバラ株式会社 Static mixing module and mixing device

Also Published As

Publication number Publication date
ES2203673T3 (en) 2004-04-16
DE59610627D1 (en) 2003-09-04
ATE246036T1 (en) 2003-08-15
KR970069108A (en) 1997-11-07
MX9702575A (en) 1997-10-31
TW358039B (en) 1999-05-11
JPH09276678A (en) 1997-10-28
CA2199332A1 (en) 1997-10-12
BR9701784A (en) 1999-10-19
CN1078817C (en) 2002-02-06
CZ109197A3 (en) 1997-10-15
CN1167007A (en) 1997-12-10
EP0800857A1 (en) 1997-10-15
PL182950B1 (en) 2002-05-31
US5813762A (en) 1998-09-29
CZ291563B6 (en) 2003-04-16
CA2199332C (en) 2000-11-21
PL319395A1 (en) 1997-10-13
KR100481930B1 (en) 2005-07-18

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