EP1125626A1 - Static mixer - Google Patents

Static mixer Download PDF

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Publication number
EP1125626A1
EP1125626A1 EP01810047A EP01810047A EP1125626A1 EP 1125626 A1 EP1125626 A1 EP 1125626A1 EP 01810047 A EP01810047 A EP 01810047A EP 01810047 A EP01810047 A EP 01810047A EP 1125626 A1 EP1125626 A1 EP 1125626A1
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EP
European Patent Office
Prior art keywords
chambers
mixer
static mixer
mixing
basic structure
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.)
Granted
Application number
EP01810047A
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German (de)
French (fr)
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EP1125626B1 (en
Inventor
Rolf Heusser
Markus Fleischli
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Sulzer Chemtech AG
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Sulzer Chemtech AG
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Priority to EP01810047A priority Critical patent/EP1125626B1/en
Publication of EP1125626A1 publication Critical patent/EP1125626A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/47—Mixing liquids with liquids; Emulsifying involving high-viscosity liquids, e.g. asphalt
    • 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
    • B01F25/432—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
    • B01F25/4321—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa the subflows consisting of at least two flat layers which are recombined, e.g. using means having restriction or expansion zones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/2305—Mixers of the two-component package type, i.e. where at least two components are separately stored, and are mixed in the moment of application
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
    • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held

Definitions

  • the invention relates to a static mixer, a device with a such mixer and use of the mixer.
  • the mixing results of the mixers mentioned are for individual applications insufficient, especially in cases where components are mixed that have different values of their viscosity. On insufficient mixed result manifests itself in the fact that at least one Flow thread that only consists of one of the components to be mixed exists, the mixer structure passes through and practically no or one to experiences slow mixing with adjacent flow threads. On such flow threads are referred to here as "mix-resistant”. Mixing-resistant flow threads come mainly in static mixers before, whose mixer structure consists of a periodic sequence of similar elementary mixing chambers. But also for non-periodic ones Mixer-resistant flow threads can be observed in mixer structures.
  • the object of the invention is to provide a static mixer, the Mixing result compared to the known mixers is improved. This The object is achieved by the static mixer defined in claim 1.
  • the static mixer includes a plurality of mixing chambers, one Form mixer structure.
  • the mixing chambers are in a tube along one Pipe axis arranged behind and next to each other. They are for mixing usable from at least two flowable components.
  • the Mixer structure represents a modification of a basic structure. In this Basic structure are the mixing chambers through radial, in the direction of Pipe axis oriented walls and through walls that are transverse to the pipe axis Walls separated from each other. Breakthroughs between neighboring Chambers in the radial walls form entrances and exits for the mixing components.
  • the modification consists of structural changes at individual points in the basic structure. It is designed in such a way that Flow of the components to be mixed is a transversal Dislocation of mix-resistant flow threads results, this Flow threads are resistant to mixing with respect to the basic structure.
  • the impurities have flow areas outside of the mix-resistant flow thread are usually a disadvantage Effect on the mixing process. If this is the case, only as many should be used Impurities are provided, such as for a sufficient number of Dislocation of the mix-resistant flow threads is necessary.
  • the defects can be designed so that they are not directly on the mix resistant flow threads, but indirectly by acting in their direct sphere of influence cause diversions, which in turn then influence the mix-resistant flow thread.
  • An arrangement suitable defects can be found empirically.
  • a device 100 is indicated by dash-dotted lines in FIG. 1.
  • This contains a static mixer 1, the mixer structure 1 'of which is a regular, unmodified basic structure 1 "forms.
  • the mixer structure 1 ' is as Side view shown. It is known from EP-A-0 749 776 and EP-A- 0 815 929, in which the basic structure 1 "on two different Wise is described:
  • the basic structure 1 consists of a multitude of Mixing elements together, arranged in a tube 10 one behind the other are; or it consists of a bundle of four chambered strands, whose mixing chambers 8 (“mixing chambers”) each between extend two closed ends 4a and 4b.
  • the mixing chambers 8 of the basic structure 1 "are of the same size without any installation and staggered.
  • Two side Reinforcement walls 5 extend over the entire length of the mixer 1.
  • the device 100 comprises a two-chambered container 100a, namely a cartridge with chambers 101 and 102. These are used for separate Inclusion of two flowable components A and B.
  • a and B can be inserted into the tube by means of pistons 111 and 112 10 are pressed in (arrows A ', B').
  • static mixer 1 which consists of the tube 10 and the mixer structure 1 ' the mixture exits the device through a nozzle 120 100 out.
  • the cartridge 100a can comprise more than two chambers.
  • the Tube 10 can be a tube part that can be placed on the cartridge 100a be trained.
  • FIG. 2 A section along the line II - II is shown in Fig. 2.
  • the mixer structure 1 ' is flowed through by the two components A and B, the same values for the Have viscosity.
  • Arrows in the mixing chamber 8 indicate the flow pattern (with the symbols 'circle with cross' and 'circle with point' arrows following below or above - in relation to the image plane - mean).
  • the Flow pattern is based on results of a numerical simulation drawn. As you can see, the flow threads appear to be of similar thickness Layers; this means good mixing.
  • Fig. 3 shows a corresponding representation as in Fig. 2, here for two Components A and B, their viscosity values by a factor of 100 are different.
  • the less viscous component B is much narrower Layers because this component flows faster.
  • the flow threads spread unevenly. Another unevenness is particularly strong over a cross section perpendicular to shown section stands. These irregularities are bad Mixing results.
  • Web 91 is formed in the mixing chamber 8 'to the tube axis 11 or axis the mixer structure 1 'is inclined.
  • the web 91 connects on a radial Wall 2 has an entrance 6b with an exit 7a such that the Flow through the web 91 from the tube wall 10 in the direction of the tube axis 11 is deflected (arrow 91 ').
  • the reverse is also possible: one Flow deflection through the web 91 from the tube axis 11 in the direction Pipe wall 10.
  • the modification 9 according to FIGS. 5 and 8 is shortened by the Lengths of three adjacent chambers 81, 82 and 83 with simultaneous Reduced number of inputs or outputs.
  • the pair is the the chambers 81 and 82 which lie one behind the other along the tube axis 11, arranged laterally from the third chamber 83.
  • Two breakthroughs 7c and 92 make a connection (arrow 92 ') between the two chambers of the pair 81, 82 ago.
  • a modification 9 advantageously includes several defects Modification elements 91 (first modification) or 81, 82, 83, 92 (second Modification), which is preferably carried out regularly over the entire length of the static mixer 1 can be positioned.
  • Modification elements 91 first modification
  • second Modification second Modification
  • the mixer structures 11 'of the described embodiments are included Advantage each monolithic; you can in particular from one Injection molded thermoplastic.
  • the mixer structure 11 ' has one rectangular cross-section and includes four arranged side by side Chamber strands. Each line forms a series of 5 to 15 mixing chambers 8.
  • Each chamber 8 of the basic structure has a length that is 1.5 to 2.5 times is longer than a chamber width, this width being greater than 1 mm and is less than 10 mm, preferably at least 2 mm and at most 5 mm.
  • the device 100 is suitable for mixing a highly viscous Components A with at least one further component B, one around can have a factor 10 to 1000 lower viscosity.
  • the Mass flow of the other component can be for example, by a factor of 10, less than the mass flow of highly viscous components.

Abstract

A known static mixer for two viscous fluids consists of a series of connecting chambers with longitudinal and transverse walls (2). The basic structure is improved by a modification (91) that introduces a transverse dislocation to divert (91') part of the stream from the basic flow pattern. An independent claim is also included for a vessel containing such a mixer. It is supplied with two fluids from cylindrical chambers with pistons and ends in a single outlet. The two components differ in viscosity by a factor of 10 to 1000. Preferred Features: The mixer consists of equal sized chambers and the modification (91) is a sloping bridge piece. Alternatively an additional longitudinal piece can be introduced over part of a chamber. The mixer is made in one piece as a thermoplastic injection molding with a chamber size of 2 to 5 mm.

Description

Die Erfindung betrifft einen statischen Mischer, eine Vorrichtung mit einem solchen Mischer und eine Verwendung des Mischers.The invention relates to a static mixer, a device with a such mixer and use of the mixer.

In der EP-A- 0 749 776 und der EP-A- 0 815 929 sind statische Mischer zum Mischen von mindestens zwei fliessfähigen Komponenten beschrieben, die kompakt sind und die trotz einem einfachen, materialsparenden Aufbau ihrer Mischerstruktur gute Mischresultate liefern. Diese Mischer eignen sich zum Mischen von hochviskosen Stoffen wie beispielsweise Dichtmassen, Zweikomponenten-Schäumen oder Zweikomponenten-Klebstoffen. Sie können preisgünstig durch Spritzgiessen aus Thermoplasten hergestellt werden, so dass sie für einen einmaligen Gebrauch wirtschaftlich verwendbar sind. Ein solcher "Einwegmischer" wird hauptsächlich für aushärtende Produkte verwendet, da bei diesen Produkten die Mischer praktisch nicht gereinigt werden können.In EP-A-0 749 776 and EP-A-0 815 929 static mixers are used Mixing of at least two flowable components described that are compact and despite a simple, material-saving structure of their Mixer structure deliver good mixing results. These mixers are suitable for Mixing of highly viscous substances such as sealing compounds, Two-component foams or two-component adhesives. she can be manufactured inexpensively by injection molding from thermoplastics be made economically usable for single use are. Such a "disposable mixer" is mainly used for curing Products used, since with these products the mixer is practically not can be cleaned.

Die Mischresultate der genannten Mischer sind bei einzelnen Anwendungen ungenügend, insbesondere in Fällen, bei denen Komponenten gemischt werden, die verschiedene Werte ihrer Viskosität aufweisen. Ein ungenügendes Mischresultat äussert sich dadurch, dass mindestens ein Strömungsfaden, der nur aus einem der zu mischenden Komponenten besteht, die Mischerstruktur durchläuft und dabei praktisch keine oder eine zu langsame Vermengung mit benachbarten Strömungsfäden erfährt. Ein solcher Strömungsfaden wird hier als "mischresistent" bezeichnet. Mischresistente Strömungsfäden kommen vor allem in statischen Mischern vor, deren Mischerstruktur aus einer periodischen Abfolge von gleichartigen elementaren Mischkammern besteht. Aber auch bei nichtperiodischen Mischerstrukturen lassen sich mischresistente Strömungsfäden beobachten.The mixing results of the mixers mentioned are for individual applications insufficient, especially in cases where components are mixed that have different values of their viscosity. On insufficient mixed result manifests itself in the fact that at least one Flow thread that only consists of one of the components to be mixed exists, the mixer structure passes through and practically no or one to experiences slow mixing with adjacent flow threads. On such flow threads are referred to here as "mix-resistant". Mixing-resistant flow threads come mainly in static mixers before, whose mixer structure consists of a periodic sequence of similar elementary mixing chambers. But also for non-periodic ones Mixer-resistant flow threads can be observed in mixer structures.

Aufgabe der Erfindung ist es, einen statischen Mischer zu schaffen, dessen Mischresultat gegenüber den bekannten Mischern verbessert ist. Diese Aufgabe wird durch den im Anspruch 1 definierten statischen Mischer gelöst.The object of the invention is to provide a static mixer, the Mixing result compared to the known mixers is improved. This The object is achieved by the static mixer defined in claim 1.

Der statische Mischer umfasst eine Vielzahl von Mischkammern, die eine Mischerstruktur bilden. Die Mischkammern sind in einem Rohr längs einer Rohrachse hinter- sowie nebeneinander angeordnet. Sie sind zum Mischen von mindestens zwei fliessfähigen Komponenten verwendbar. Die Mischerstruktur stellt eine Modifikation einer Grundstruktur dar. In dieser Grundstruktur sind die Mischkammern durch radiale, in Richtung der Rohrachse orientierte Wände und durch quer zur Rohrachse stehende Wände gegeneinander abgegrenzt. Durchbrüche zwischen benachbarten Kammern in den radialen Wänden bilden Ein- und Ausgänge für die zu mischenden Komponenten. Die Modifikation besteht aus Strukturänderungen an einzelnen Stellen der Grundstruktur. Sie ist so ausgeführt, dass in der Strömung der zu mischenden Komponenten sich eine transversale Dislokation von mischresistenten Strömungsfäden ergibt, wobei diese Strömungsfäden mischresistent bezüglich der Grundstruktur sind.The static mixer includes a plurality of mixing chambers, one Form mixer structure. The mixing chambers are in a tube along one Pipe axis arranged behind and next to each other. They are for mixing usable from at least two flowable components. The Mixer structure represents a modification of a basic structure. In this Basic structure are the mixing chambers through radial, in the direction of Pipe axis oriented walls and through walls that are transverse to the pipe axis Walls separated from each other. Breakthroughs between neighboring Chambers in the radial walls form entrances and exits for the mixing components. The modification consists of structural changes at individual points in the basic structure. It is designed in such a way that Flow of the components to be mixed is a transversal Dislocation of mix-resistant flow threads results, this Flow threads are resistant to mixing with respect to the basic structure.

Durch die transversale Dislokation des mischresistenten Stromfadens gelangt dieser in einen Bereich, in dem er einer starken Verformung unterworfen und damit gut vermischbar wird. Der dislozierte Strömungsfaden wird durch einen anderen ersetzt, der nun seinerseits vom Mischprozess weitgehend abgekoppelt ist. Es ist daher vorteilhaft, wenn an mehreren Positionen des statischen Mischers solche Störstellen eingerichtet werden, die eine Dislokation des jeweiligen mischresistenten Strömungsfadens bewirken. Vorteilhaft ist es ausserdem, wenn die Störstellen verschieden ausgebildet sind.Due to the transverse dislocation of the mix-resistant current thread this in an area in which it is subjected to severe deformation and so that it can be mixed well. The dislodged flow thread is represented by a another replaced, which in turn largely from the mixing process is uncoupled. It is therefore advantageous if the static mixer such impurities are set up, the one Dislocation of the respective mix-resistant flow thread. It is also advantageous if the defects are designed differently are.

Die Störstellen haben in Strömungsbereichen, die ausserhalb des mischresistenten Strömungsfadens liegen, in der Regel eine nachteilige Wirkung auf den Mischvorgang. Ist dies der Fall, so sollen nur gerade soviele Störstellen vorgesehen werden, wie für eine ausreichende Anzahl von Dislokationen der mischresistenten Strömungsfäden nötig ist.The impurities have flow areas outside of the mix-resistant flow thread are usually a disadvantage Effect on the mixing process. If this is the case, only as many should be used Impurities are provided, such as for a sufficient number of Dislocation of the mix-resistant flow threads is necessary.

Die Störstellen können so ausgebildet sein, dass sie nicht direkt auf den mischresistenten Strömungsfaden einwirken, sondern indirekt, indem sie in ihrem direkten Einflussbereich Umlenkungen bewirken, die ihrerseits dann den mischresistenten Strömungsfaden beeinflussen. Eine Ausgestaltung geeigneter Störstellen lässt sich empirisch finden. Man führt Versuche mit zu mischenden Komponenten aus, die unterschiedlich gefärbt sind, und vergleicht die Resultate für eine Grundstruktur mit jenen einer Modifikation der Grundstruktur, wobei man feststellen kann, ob mischresistente Strömungsfaden tatsächlich disloziert worden sind.The defects can be designed so that they are not directly on the mix resistant flow threads, but indirectly by acting in their direct sphere of influence cause diversions, which in turn then influence the mix-resistant flow thread. An arrangement suitable defects can be found empirically. One carries out experiments with mixing components that are colored differently, and compares the results for a basic structure with those of a modification of the Basic structure, whereby one can determine whether mix-resistant Flow threads have actually been dislocated.

Die abhängigen Ansprüche 2 bis 6 betreffen vorteilhafte Ausführungsformen des erfindungsgemässen statischen Mischers. Vorrichtungen mit solchen Mischern und eine Verwendung sind jeweils Gegenstand der Ansprüche 7 und 8 bzw. des Anspruchs 9.The dependent claims 2 to 6 relate to advantageous embodiments of the static mixer according to the invention. Devices with such Mixers and a use are each the subject of claims 7 and 8 and claim 9.

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

Fig. 1
einen statischen Mischer mit einer regelmässigen, nicht modifizierten Mischerstruktur, die eine Grundstruktur darstellt,
Fig. 2
eine Illustration des Mischprozesses, gezeichnet nach Ergebnissen einer numerischen Simulation,
Fig. 3
eine entsprechende Darstellung wie in Fig. 2 für eine Mischung zweier Komponenten, deren Werte für die Viskosität wesentlich verschieden sind,
Fig. 4
eine erste Modifikation der in Fig. 1 dargestellten Grundstruktur,
Fig. 5
eine zweite Modifikation,
Fig. 6
ein Schrägbild zu der Grundstruktur der Fig. 1,
Fig. 7
die Grundstruktur mit der ersten Modifikation gemäss Fig. 4,
Fig. 8
die Grundstruktur mit der zweiten Modifikation gemäss Fig. 5,
Fig. 9
weitere Beispiele für Modifikationen und
Fig.10
eine Illustration zum Auftreten von mischresistenten Strömungsfäden.
The invention is explained below with reference to the drawings. Show it:
Fig. 1
a static mixer with a regular, unmodified mixer structure, which is a basic structure,
Fig. 2
an illustration of the mixing process, drawn according to the results of a numerical simulation,
Fig. 3
a corresponding representation as in FIG. 2 for a mixture of two components, the values of which for the viscosity are significantly different,
Fig. 4
1 shows a first modification of the basic structure shown in FIG. 1,
Fig. 5
a second modification,
Fig. 6
2 shows an oblique image of the basic structure of FIG. 1,
Fig. 7
the basic structure with the first modification according to FIG. 4,
Fig. 8
the basic structure with the second modification according to FIG. 5,
Fig. 9
further examples of modifications and
Fig. 10
an illustration of the occurrence of mix-resistant flow threads.

In Fig. 1 ist eine Vorrichtung 100 strichpunktiert angedeutet. Diese enthält einen statischen Mischer 1, dessen Mischerstruktur 1' eine regelmässige, nicht modifizierte Grundstruktur 1" bildet. Die Mischerstruktur 1' ist als Seitenansicht abgebildet. Sie ist aus den genannten EP-A- 0 749 776 und EP-A- 0 815 929 bekannt, in welchen die Grundstruktur 1" auf zwei verschiedene Weisen beschrieben ist: Die Grundstruktur 1" setzt sich aus eine Vielzahl von Mischelementen zusammen, die in einem Rohr 10 hintereinander angeordnet sind; oder sie besteht aus einem Bündel von vier gekammerten Strängen, deren Mischkammern 8 ("mischwirksame Kammern") sich jeweils zwischen zwei geschlossenen Enden 4a und 4b erstrecken. Jedes der Mischelemente umfasst zwei axiale Abschnitte, wobei jedem der Abschnitte mindestens ein den Abschnitt unterteilender Trennsteg 2 bzw. 3 (radiale Wände) zugeordnet ist. Die Trennstege 2, 3 kreuzen sich und unterteilen den Rohrquerschnitt in gleich grosse Teilflächen. Die Teilflächen sind offen oder durch Umlenkscheiben 4 abgedeckt. Weitere Details erkennt man in den Zeichnungen, insbesondere in Fig. 6, die eine nicht modifizierte Grundstruktur 1" mit einer vollständig gezeigten Mischkammer 8 darstellt.A device 100 is indicated by dash-dotted lines in FIG. 1. This contains a static mixer 1, the mixer structure 1 'of which is a regular, unmodified basic structure 1 "forms. The mixer structure 1 'is as Side view shown. It is known from EP-A-0 749 776 and EP-A- 0 815 929, in which the basic structure 1 "on two different Wise is described: The basic structure 1 "consists of a multitude of Mixing elements together, arranged in a tube 10 one behind the other are; or it consists of a bundle of four chambered strands, whose mixing chambers 8 ("mixing chambers") each between extend two closed ends 4a and 4b. Each of the mixing elements comprises two axial sections, each of the sections having at least one assigned to the section dividing separator 2 or 3 (radial walls) is. The dividers 2, 3 intersect and divide the pipe cross-section into equally large partial areas. The partial areas are open or through Deflection disks 4 covered. Further details can be seen in the Drawings, particularly in Fig. 6, showing an unmodified basic structure 1 "with a fully shown mixing chamber 8.

Die Mischkammern 8 der Grundstruktur 1" sind einbautenfrei, gleich gross und versetzt zueinander angeordnet. Zwei Eingänge 6a, 6b und zwei Ausgänge 7a, 7b in einer wechselständigen Abfolge angeordnet bilden Verbindungen zu vier benachbarten Kammern. Zwei seitliche Verstärkungswände 5 erstrecken sich über die ganze Länge des Mischers 1.The mixing chambers 8 of the basic structure 1 "are of the same size without any installation and staggered. Two inputs 6a, 6b and two Form outputs 7a, 7b arranged in an alternating sequence Connections to four neighboring chambers. Two side Reinforcement walls 5 extend over the entire length of the mixer 1.

Die Vorrichtung 100 umfasst einen zweikammerigen Behälter 100a, nämlich eine Kartusche, mit Kammern 101 und 102. Diese dienen zur separaten Aufnahme von zwei fliessfähigen Komponenten A und B. Durch Ausgänge des Behälters 100a können A und B mittels Kolben 111 und 112 in das Rohr 10 eingepresst werden (Pfeile A', B'). Nach einer Vermischung von A mit B im statischen Mischer 1, der sich aus dem Rohr 10 und der Mischerstruktur 1' zusammensetzt, tritt das Gemisch durch eine Düse 120 aus der Vorrichtung 100 aus. Die Kartusche 100a kann mehr als zwei Kammern umfassen. Das Rohr 10 kann als ein auf die Kartusche 100a aufsetzbares Rohrteil ausgebildet sein.The device 100 comprises a two-chambered container 100a, namely a cartridge with chambers 101 and 102. These are used for separate Inclusion of two flowable components A and B. Through exits of the container 100a, A and B can be inserted into the tube by means of pistons 111 and 112 10 are pressed in (arrows A ', B'). After mixing A with B in static mixer 1, which consists of the tube 10 and the mixer structure 1 ' the mixture exits the device through a nozzle 120 100 out. The cartridge 100a can comprise more than two chambers. The Tube 10 can be a tube part that can be placed on the cartridge 100a be trained.

Ein Schnitt nach der Linie II - II ist in Fig. 2 dargestellt. Die Mischerstruktur 1' ist von den zwei Komponenten A und B durchströmt, die gleiche Werte für die Viskosität haben. Pfeile in der Mischkammer 8 geben den Strömungsverlauf an (wobei die Symbole 'Kreis mit Kreuz' und 'Kreis mit Punkt' Pfeile nach unten bzw. oben - auf die Bildebene bezogen - bedeuten). Das Strömungsmuster ist nach Ergebnissen einer numerischen Simulation gezeichnet. Wie man sieht, erscheinen die Strömungsfäden als ähnlich dicke Schichten; dies bedeutet eine gute Durchmischung.A section along the line II - II is shown in Fig. 2. The mixer structure 1 ' is flowed through by the two components A and B, the same values for the Have viscosity. Arrows in the mixing chamber 8 indicate the flow pattern (with the symbols 'circle with cross' and 'circle with point' arrows following below or above - in relation to the image plane - mean). The Flow pattern is based on results of a numerical simulation drawn. As you can see, the flow threads appear to be of similar thickness Layers; this means good mixing.

Fig. 3 zeigt eine entsprechende Darstellung wie in Fig. 2, hier für zwei Komponenten A und B, deren Werte für die Viskosität um einen Faktor 100 verschieden sind. Die weniger viskose Komponente B bildet viel schmalere Schichten, da diese Komponente schneller fliesst. Die Strömungsfäden breiten sich ungleichmässig aus. Eine weitere Ungleichmässigkeit ist besonders stark über einem Querschnitt ausgebildet, der senkrecht zum dargestellten Schnitt steht. Diese Ungleichmässigkeiten haben eine schlechte Durchmischung zur Folge.Fig. 3 shows a corresponding representation as in Fig. 2, here for two Components A and B, their viscosity values by a factor of 100 are different. The less viscous component B is much narrower Layers because this component flows faster. The flow threads spread unevenly. Another unevenness is particularly strong over a cross section perpendicular to shown section stands. These irregularities are bad Mixing results.

Aufgrund der Mängel, die das Mischverfahren aufweist, ergeben sich mischresistente Strömungsfäden, gegen deren ungünstigen Einfluss, der im gemischte Produkt sichtbar wird, mit den erfindungsgemässen Massnahmen vorgegangen werden soll. Diese Massnahmen in Form einer Modifikation der Grundstruktur haben zum Erfolg geführt; zwei erfolgreiche Fälle mit jeweils einer Modifikation 9 sind in den Figuren 4 und 7 bzw. 5 und 8 illustriert. Die in den Figuren 6 bis 8 dargestellten Mischerstrukturen sind zur besseren Erkennbarkeit der wesentlichen Merkmale mit nur einer Verstärkungswand 5 dargestellt.Due to the shortcomings that the mixing process has, arise Mix-resistant flow threads, against their unfavorable influence, the in mixed product is visible with the measures according to the invention to proceed. These measures in the form of a modification of the Basic structure has led to success; two successful cases with each a modification 9 are illustrated in FIGS. 4 and 7 or 5 and 8. In the The mixer structures shown in FIGS. 6 to 8 are for better The essential features can be recognized with only one reinforcement wall 5 shown.

Die Modifikation 9 gemäss den Figuren 4 und 7 ist durch einen geneigten Steg 91 in der Mischkammer 8' gebildet, der zur Rohrachse 11 oder Achse der Mischerstruktur 1' geneigt ist. Der Steg 91 verbindet auf einer radialen Wand 2 einen Eingang 6b mit einem Ausgang 7a solcherart, dass die Strömung durch den Steg 91 von der Rohrwand 10 in Richtung Rohrachse 11 umgelenkt wird (Pfeil 91'). Auch die Umkehrung ist möglich: eine Strömungsumlenkung durch den Steg 91 von der Rohrachse 11 in Richtung Rohrwand 10.The modification 9 according to FIGS. 4 and 7 is inclined Web 91 is formed in the mixing chamber 8 'to the tube axis 11 or axis the mixer structure 1 'is inclined. The web 91 connects on a radial Wall 2 has an entrance 6b with an exit 7a such that the Flow through the web 91 from the tube wall 10 in the direction of the tube axis 11 is deflected (arrow 91 '). The reverse is also possible: one Flow deflection through the web 91 from the tube axis 11 in the direction Pipe wall 10.

Die Modifikation 9 gemäss den Figuren 5 und 8 ist durch Verkürzungen der Längen dreier benachbarter Kammern 81, 82 und 83 bei gleichzeitiger Verringerung der Anzahl Ein- oder Ausgänge gebildet. Dabei ist das Paar der der Kammern 81 und 82, die längs der Rohrachse 11 hintereinander liegen, seitlich von der dritten Kammer 83 angeordnet. Zwei Durchbrüche 7c und 92 stellen eine Verbindung (Pfeil 92') zwischen den beiden Kammern des Paars 81, 82 her.The modification 9 according to FIGS. 5 and 8 is shortened by the Lengths of three adjacent chambers 81, 82 and 83 with simultaneous Reduced number of inputs or outputs. The pair is the the chambers 81 and 82 which lie one behind the other along the tube axis 11, arranged laterally from the third chamber 83. Two breakthroughs 7c and 92 make a connection (arrow 92 ') between the two chambers of the pair 81, 82 ago.

Eine Modifikation 9 umfasst mit Vorteil mehrere Störstellen mit Modifikationselementen 91 (erste Modifikation) bzw. 81, 82, 83, 92 (zweite Modifikation), die vorzugsweise regelmässig über die gesamte Länge des statischen Mischers 1 positioniert werden. Eine nicht dargestellte Kombination beider Modifikationselemente 91 bzw. 81, 82, 83, 92 ist besonders vorteilhaft.A modification 9 advantageously includes several defects Modification elements 91 (first modification) or 81, 82, 83, 92 (second Modification), which is preferably carried out regularly over the entire length of the static mixer 1 can be positioned. A combination, not shown both modification elements 91 and 81, 82, 83, 92 is particularly advantageous.

Weitere Möglichkeiten, wie die Grundstruktur modifiziert werden kann, sind in Fig. 9 zusammengefasst dargestellt: a) ausgebrochene Wandstücke 93, 94 und 95, die Bypass-Strömungen (Pfeile 93', 94' und 95') bewirken; und b) hinzugefügte Stege 96, die Durchgänge zwischen Mischkammern 8 verengen.Further possibilities of how the basic structure can be modified are in 9 summarized: a) broken-out wall pieces 93, 94 and 95, which cause bypass flows (arrows 93 ', 94' and 95 '); and b) added webs 96, the passages between mixing chambers 8 narrow.

Fig. 10 schliesslich zeigt schematisch anhand eines Querschnitts durch den statischen Mischer 1 mischresistente Strömungsfäden 30 und 31. Die Konturen dieser Strömungsfäden sind weniger klar als dargestellt; sie sind diffus gezahnt und befinden sich in einer weiteren Umgebung 30' bzw. 31'.10 finally shows schematically using a cross section through the static mixer 1 mix-resistant flow threads 30 and 31. Die Contours of these flow threads are less clear than shown; they are diffusely toothed and are in a further environment 30 'or 31'.

Die Mischerstrukturen 11' der beschriebenen Ausführungsformen werden mit Vorteil jeweils monolithisch ausgebildet; sie können insbesondere aus einem Thermoplast spritzgegossen werden. Die Mischerstruktur 11' hat einen rechteckigen Querschnitt und umfasst vier nebeneinander angeordnete Kammerstränge. Jeder Strang bildet eine Serie von 5 bis 15 Mischkammern 8. Jede Kammer 8 der Grundstruktur weist eine Länge auf, die 1.5 bis 2.5 Mal länger als eine Kammerbreite ist, wobei diese Breite grösser als 1mm und kleiner 10 mm, vorzugsweise mindestens 2mm und maximal 5 mm ist.The mixer structures 11 'of the described embodiments are included Advantage each monolithic; you can in particular from one Injection molded thermoplastic. The mixer structure 11 'has one rectangular cross-section and includes four arranged side by side Chamber strands. Each line forms a series of 5 to 15 mixing chambers 8. Each chamber 8 of the basic structure has a length that is 1.5 to 2.5 times is longer than a chamber width, this width being greater than 1 mm and is less than 10 mm, preferably at least 2 mm and at most 5 mm.

Die Vorrichtung 100 eignet sich zum Vermischen einer hochviskosen Komponenten A mit mindestens einer weiteren Komponente B, die eine um einen Faktor 10 bis 1000 kleinere Viskosität aufweisen kann. Der Massenstrom der weiteren Komponente kann um ein Vielfaches, beispielsweise um einen Faktor 10, kleiner als der Massenstrom der hochviskosen Komponenten sein.The device 100 is suitable for mixing a highly viscous Components A with at least one further component B, one around can have a factor 10 to 1000 lower viscosity. The Mass flow of the other component can be for example, by a factor of 10, less than the mass flow of highly viscous components.

Claims (9)

Statischer Mischer (1) mit einer Vielzahl von eine Mischerstruktur (1') bildenden Mischkammern (8), die in einem Rohr (10) längs einer Rohrachse (11) hinter- sowie nebeneinander angeordnet sind und die zum Mischen von mindestens zwei fliessfähigen Komponenten (A, B) verwendbar sind, wobei die Mischerstruktur eine Modifikation (9) einer Grundstruktur (1") darstellt, in welcher Grundstruktur (1") die Mischkammern (8) durch radiale, in Richtung der Rohrachse orientierte Wände (2, 3) und durch quer zur Rohrachse stehende Wände (4, 4a, 4b) gegeneinander abgegrenzt sind und Durchbrüche zwischen benachbarten Kammern in den radialen Wänden Ein- und Ausgänge (6a, 6b bzw. 7a, 7b) für die zu mischenden Komponenten bilden, während die Modifikation (9) aus Strukturänderungen an einzelnen Stellen der Grundstruktur (1") besteht und so ausgeführt ist, dass in der Strömung der zu mischenden Komponenten sich eine transversale Dislokation von mischresistenten Strömungsfäden (30) ergibt, die mischresistent bezüglich der Grundstruktur sind. Static mixer (1) with a plurality of mixing chambers (8) forming a mixer structure (1 '), which are arranged in a tube (10) alongside and alongside one another along a tube axis (11) and which are used to mix at least two flowable components ( A, B) can be used, the mixer structure representing a modification (9) of a basic structure (1 "), in which basic structure (1 ") the mixing chambers (8) are delimited from each other by radial walls (2, 3) oriented in the direction of the pipe axis and by walls (4, 4a, 4b) transverse to the pipe axis and openings between adjacent chambers in the radial walls form entrances and exits (6a, 6b or 7a, 7b) for the components to be mixed, while the modification (9) consists of structural changes at individual points in the basic structure (1 ") and is carried out in such a way that in the flow of the components to be mixed there is a transverse dislocation of mix-resistant flow threads (30) which are mix-resistant with respect to the basic structure. Statischer Mischer nach Anspruch 1, dadurch gekennzeichnet, dass die Mischkammern (8) der Grundstruktur (1") einbautenfreie, gleich grosse Kammern sind und versetzt zueinander angeordnet sind, so dass zwei Eingänge (6a, 6b) und zwei Ausgänge (7a, 7b) Verbindungen zu vier benachbarten Kammern bilden.Static mixer according to claim 1, characterized in that the mixing chambers (8) of the basic structure (1 ") are built-in, the same large chambers are and are staggered, so that two inputs (6a, 6b) and two outputs (7a, 7b) Make connections to four neighboring chambers. Statischer Mischer nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Modifikation (9) zumindest teilweise durch geneigt zur Rohrachse (11) stehende Stege (91) gebildet ist, die jeweils in einer Mischkammer (8') auf einer radialen Wand (2, 3) einen Eingang (6b) mit einem Ausgang (7a) solcherart verbindet (91'), dass die Strömung durch den Steg von der Rohrwand (10) in Richtung Rohrachse (11) oder umgekehrt von der Rohrachse in Richtung Rohrwand umgelenkt wird. Static mixer according to claim 1 or 2, characterized in that the modification (9) is at least partially inclined to Pipe axis (11) standing webs (91) is formed, each in a Mixing chamber (8 ') on a radial wall (2, 3) an entrance (6b) connects (91 ') to an outlet (7a) such that the flow through the web from the pipe wall (10) towards the pipe axis (11) or reversed from the pipe axis towards the pipe wall becomes. Statischer Mischer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Modifikation (9) zumindest teilweise durch Verkürzungen der Längen von drei benachbarten Kammern (81, 82, 83) bei gleichzeitiger Verringerung der Anzahl Ein- oder Ausgänge gebildet ist, wobei ein Paar von Kammern (81, 82), die längs der Rohrachse (11) hintereinander angeordnet sind, zwei dieser Kammern bilden und die dritte Kammer (83), die seitlich von dem Kammerpaar angeordnet ist, über zwei Durchbrüche (7c, 92) eine Verbindung (92') zwischen den beiden Kammern des Paars herstellt.Static mixer according to one of claims 1 to 3, characterized characterized in that the modification (9) at least partially by Shortening the lengths of three neighboring chambers (81, 82, 83) while reducing the number of inputs or outputs is formed, wherein a pair of chambers (81, 82) along the Pipe axis (11) are arranged one behind the other, two of these chambers form and the third chamber (83) laterally from the pair of chambers is arranged, via two openings (7c, 92) a connection (92 ') between the two chambers of the couple. Statischer Mischer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Mischerstruktur (1') monolithisch ausgebildet ist, insbesondere aus einem Thermoplast spritzgegossen ist.Static mixer according to one of claims 1 to 4, characterized characterized in that the mixer structure (1 ') is monolithic is, in particular injection molded from a thermoplastic. Statischer Mischer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Mischerstruktur (1') einen quadratischen oder rechteckigen Querschnitt hat, vier nebeneinander angeordnete Kammerstränge umfasst, jeder Strang eine Serie von 5 bis 15 Kammern (8) bildet und jede Kammer der Grundstruktur (1") eine Länge aufweist, die 1.5 bis 2.5 Mal länger als eine Kammerbreite ist, wobei diese Breite grösser als 1mm und kleiner 10 mm, vorzugsweise mindestens 2mm und maximal 5 mm ist.Static mixer according to one of claims 1 to 5, characterized characterized in that the mixer structure (1 ') has a square or has a rectangular cross-section, four arranged side by side Chamber strands include, each strand a series of 5 to 15 Forms chambers (8) and each chamber of the basic structure (1 ") Has a length that is 1.5 to 2.5 times longer than a chamber width, this width being greater than 1 mm and less than 10 mm, preferably is at least 2mm and maximum 5mm. Vorrichtung (100) mit einem mehrkammerigen Behälter (100a) zur separaten Aufnahme von mindestens zwei fliessfähigen Komponenten (A, B), die durch Ausgänge des Behälters in ein auf den Behälter aufgesetzten Rohrteil (10) einpressbar sind, und mit einer im Rohrteil angeordneten Mischerstruktur (1'), die zusammen mit dem Rohrteil einen statischen Mischer (1) gemäss einem der Ansprüche 1 bis 6 bildet.Device (100) with a multi-chambered container (100a) for separate inclusion of at least two flowable components (A, B) by exits of the container into one on the container attached pipe part (10) can be pressed in, and with one in the pipe part arranged mixer structure (1 ') together with the pipe part a static mixer (1) according to one of claims 1 to 6 forms. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die Kammern (101, 102) des Behälters (100a) zylinderförmig sind und dass kolbenartige Mittel (111, 112) vorgesehen sind, mittels derer die fliessfähigen Komponenten (A, B) aus den Kammern auspressbar sind. Apparatus according to claim 7, characterized in that the Chambers (101, 102) of the container (100a) are cylindrical and that piston-like means (111, 112) are provided, by means of which the flowable components (A, B) can be squeezed out of the chambers. Verwendung eines statischen Mischers gemäss einem der Ansprüche 1 bis 6, insbesondere in einer Vorrichtung (100) nach Anspruch 7 oder 8, zur Vermischung einer hochviskosen Komponenten (A) mit mindestens einer weiteren Komponente (B), die eine um einen Faktor 10 bis 1000 kleinere Viskosität aufweisen kann, wobei der Massenstrom der weiteren Komponente um ein Vielfaches kleiner als der Massenstrom der hochviskosen Komponenten sein kann.Use of a static mixer according to one of the claims 1 to 6, in particular in a device (100) according to claim 7 or 8, for mixing a highly viscous component (A) with at least one further component (B), one by a factor May have 10 to 1000 smaller viscosity, the Mass flow of the other component many times smaller than the mass flow of the highly viscous components can be.
EP01810047A 2000-02-17 2001-01-18 Static mixer Expired - Lifetime EP1125626B1 (en)

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EP1312409A1 (en) * 2002-03-22 2003-05-21 Sulzer Chemtech AG Mixing tube with a longitudinal element
EP1837070A1 (en) 2006-03-24 2007-09-26 StaMixCo Technology AG Static mixer, and method of manufacturing the same
US7645843B2 (en) 2004-12-17 2010-01-12 Borealis Technology Oy Process for polymerising olefins in the presence of an olefin polymerisation catalyst
EP2335817A3 (en) * 2009-12-15 2012-06-13 HILTI Aktiengesellschaft Static mixer
CN1720094B (en) * 2002-12-06 2012-08-29 苏尔寿混合技术有限公司 Stationary type mixing appliance
DE202015105397U1 (en) 2015-10-13 2017-01-17 Nikolaus Brugner Static mixer and mixing device with such a mixer
WO2017027275A3 (en) * 2015-08-07 2017-03-30 Nordson Corporation Entry mixing elements and related static mixers and methods of mixing
CN106659992A (en) * 2014-06-12 2017-05-10 黄嘉豪 Mixer
EP3241611A1 (en) 2016-05-02 2017-11-08 Borealis AG A process for feeding a polymerisation catalyst
EP3338882A1 (en) * 2016-12-14 2018-06-27 Felix Streiff Mixing element with high strength and mixing effect
DE202018106654U1 (en) 2018-11-22 2019-02-06 Sulzer Mixpac Ag Static mixer
US10245565B2 (en) 2015-08-07 2019-04-02 Nordson Corporation Double wall flow shifter baffles and associated static mixer and methods of mixing
CN111189759A (en) * 2020-01-14 2020-05-22 安徽奇书生物科技有限公司 Perfusion microscope

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JP6931355B2 (en) 2015-11-13 2021-09-08 リ ミキサーズ，インコーポレーテッド Static mixer
US11717794B2 (en) 2017-07-28 2023-08-08 3lmed GmbH Mixer
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Cited By (20)

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Publication number Priority date Publication date Assignee Title
EP1312409A1 (en) * 2002-03-22 2003-05-21 Sulzer Chemtech AG Mixing tube with a longitudinal element
CN1720094B (en) * 2002-12-06 2012-08-29 苏尔寿混合技术有限公司 Stationary type mixing appliance
US7645843B2 (en) 2004-12-17 2010-01-12 Borealis Technology Oy Process for polymerising olefins in the presence of an olefin polymerisation catalyst
EP1837070A1 (en) 2006-03-24 2007-09-26 StaMixCo Technology AG Static mixer, and method of manufacturing the same
EP2335817A3 (en) * 2009-12-15 2012-06-13 HILTI Aktiengesellschaft Static mixer
EP3156121A4 (en) * 2014-06-12 2018-01-24 HUANG, Chia-Hao Mixer
CN106659992B (en) * 2014-06-12 2019-03-29 黄嘉豪 Mixer
CN106659992A (en) * 2014-06-12 2017-05-10 黄嘉豪 Mixer
US10363526B2 (en) 2015-08-07 2019-07-30 Nordson Corporation Entry mixing elements and related static mixers and methods of mixing
WO2017027275A3 (en) * 2015-08-07 2017-03-30 Nordson Corporation Entry mixing elements and related static mixers and methods of mixing
US10245565B2 (en) 2015-08-07 2019-04-02 Nordson Corporation Double wall flow shifter baffles and associated static mixer and methods of mixing
US10427114B2 (en) 2015-08-07 2019-10-01 Nordson Corporation Double wall flow shifter baffles and associated static mixer and methods of mixing
DE202015105397U1 (en) 2015-10-13 2017-01-17 Nikolaus Brugner Static mixer and mixing device with such a mixer
WO2017191054A1 (en) 2016-05-02 2017-11-09 Borealis Ag A process for feeding a polymerisation catalyst
EP3241611A1 (en) 2016-05-02 2017-11-08 Borealis AG A process for feeding a polymerisation catalyst
US10946357B2 (en) 2016-05-02 2021-03-16 Borealis Ag Process for feeding a polymerisation catalyst
EP3338882A1 (en) * 2016-12-14 2018-06-27 Felix Streiff Mixing element with high strength and mixing effect
DE202018106654U1 (en) 2018-11-22 2019-02-06 Sulzer Mixpac Ag Static mixer
WO2020104473A2 (en) 2018-11-22 2020-05-28 Sulzer Mixpac Ag Static mixer
CN111189759A (en) * 2020-01-14 2020-05-22 安徽奇书生物科技有限公司 Perfusion microscope

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