EP0472491B1 - Static laminar mixing device, admixing device, as well as the use of the mixing and admixing device - Google Patents
Static laminar mixing device, admixing device, as well as the use of the mixing and admixing device Download PDFInfo
- Publication number
- EP0472491B1 EP0472491B1 EP91810565A EP91810565A EP0472491B1 EP 0472491 B1 EP0472491 B1 EP 0472491B1 EP 91810565 A EP91810565 A EP 91810565A EP 91810565 A EP91810565 A EP 91810565A EP 0472491 B1 EP0472491 B1 EP 0472491B1
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- Prior art keywords
- mixer
- mixing
- mixing device
- static
- admixing
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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
- 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
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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
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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
- B01F23/471—Mixing liquids with liquids; Emulsifying involving high-viscosity liquids, e.g. asphalt using a very viscous liquid and a liquid of low viscosity
Definitions
- the invention relates to a static laminar mixing device for mixing media of different viscosities, to a mixing device for supplying a medium, and to the use of the mixing device and the mixing device.
- Static laminar mixing devices are systems built from so-called static mixers, in which the flow of the media to be mixed, e.g. Liquid with liquid or liquid with gas, remains laminar.
- Such laminar mixers are used in mixing devices for mixing e.g. Liquids of widely differing viscosities, such as those used when admixing low-viscosity, soluble additives to high-viscosity liquids.
- the low-viscosity (low-viscosity) liquid becomes the main stream of the high-viscosity (Viscous) liquid supplied, for example, via a tube which can be arranged in front of or directly at the entrance to the mixer element and opens into the main stream of the highly viscous liquid.
- the object of the invention is to provide laminar mixing devices which have improved mixing properties when mixing components of substantially different viscosities. This can be achieved by a laminar mixing device with the features of claim 1.
- the mixer device has a first mixing column equipped with twelve SULZER-type SMX® DN17 mixing elements, also called a pre-mixer, and a second mixing column equipped with eighteen SULZER-type SMX® DN50 mixing elements, also called a main mixer.
- the two mixing columns of the new mixing device according to the invention together have a length of only 1.1 m with a substantially improved, at least doubled, amount of admixture of the additive.
- the number of mixing elements in the first mixing column should be at least four, but less than half the total number of mixing elements in the two mixing columns.
- the new admixing device with the constricting orifice in the main flow of the highly viscous liquid and which is arranged in the region of the mouth of the feed pipe for the low-viscosity medium can achieve the maximum possible, homogeneously miscible amount of the additive or the low-viscous medium in comparison to conventional admixing devices or metering devices by up to about a third.
- the cross section of mixing columns is practically always circular and the diameter of the likewise expediently circular orifice should generally be at most 2/3 of the diameter of the main stream, ie the mixer column.
- a mixing device also called a metering point, can also comprise several orifices which are arranged next to one another.
- several orifices with a feed tube for the additive would also be distributed over the cross section of the main flow.
- the total cross section of the plurality of orifices should advantageously be less than half the cross section of the main flow. It should be noted that the flow is always laminar even in the area of the restricting orifices.
- the performance of the new metering device to support the increased mixing performance of the mixing device is particularly effective.
- the flow velocities in the pre-mixer and main mixer are typically in the range from one to a hundred mmsec ⁇ 1, for example from about 50 mmsec ⁇ 1 in the pre-mixer and 1 to 10 mmsec ⁇ 1 in the main mixer.
- the static laminar mixing device for mixing media with very different viscosities has two consecutively arranged mixers with different cross sections.
- the cross section of the first mixer is smaller.
- the admixing device for metering the additive with a lower viscosity than the medium of the main stream has an orifice in the opening of which the nozzle opens.
- the mixer 1 of FIG. 1A has, for example, thirty mixing elements 11 which are arranged alternately in a crosswise manner in the column 10.
- the main viscous medium 12, for example a plastic is mixed with the low-viscosity additive 13, e.g. a mineral oil / paraffin.
- the admixing device 1213 comprises an orifice 14 for the main flow 12, in the opening of which the nozzle 15 opens.
- the additive 12 supplied is dissolved in the plastic and / or homogeneously distributed.
- any other known admixer could also be provided instead of the new admixing device 1213; for example one as shown in Fig. 1B.
- the laminar mixer device 1 'of Fig. 1B consists of the premixer 1a (the main flow experiences relatively high shear / shear rate in the order of magnitude ⁇ ⁇ 20-200 s ⁇ 1) and the main mixer 1b (the main flow experiences relatively low shear therein / Shear rate in the order of magnitude ⁇ ⁇ 1-5 s ⁇ 1), which has a larger cross-section than the premixer 1a.
- the mixer 1a is equipped with, for example, twelve mixing elements 11a arranged crosswise.
- the mixer Ib comprises, for example, eighteen mixer elements 11b which are likewise arranged in a crosswise manner.
- the low-viscosity medium / additive 13 ' (eg paraffin oil) is added to the main flow 12' of the viscous medium (eg a plastic such as polystyrene) in the admixing arrangement or metering device 1213 '.
- the viscous medium eg a plastic such as polystyrene
- a new metering device with orifice could also be provided. It would be too conceivable to arrange a transition piece with a transition section without mixing elements between the two mixers 1a and 1b of the mixing device 1 '.
- the additive flow 21 is fed via the nozzle 22 with the nozzle channel 220 to the main flow 23 in the region of the opening 20 of the orifice 24.
- the additive 21 is supplied laterally to the nozzle 22, which is mounted in the web 25.
- the nozzle channel 220 and the aperture 20 open directly into the mixer 26 with the mixing elements 27.
- the main stream 33 of the viscous component is diverted and fed to the mixer column 36 with the mixing elements 37 via the channel 30 of the aperture 34.
- the nozzle 32 with the nozzle channel 320 for the more fluid additive stream 31 is not angled in this example, directed in the direction of the mixer column 36.
- the admixing device 4 of Fig. 4A and 4B has two nozzles 42 and 42 'for additive 41.
- the main stream 430 of the higher-viscosity agent is divided into the two parallel partial main streams 43 and 43 ', which flow through the mixer 46 and 46' equipped with mixing elements 47 and 47 '.
- the two aperture openings 40 and 40 ' are present, in which the nozzle tubes 42 and 42' open out concentrically.
- the parallel mixer 46 and 46 'with the partial main streams 43 and 43' could, which is not shown here, form the premixer for a common main mixer of a static laminar mixing device.
- the SULZER type SMX mixer elements are suitable as mixer elements.
- the low-viscosity additive could also be a gas such as N2, CO2 or H2O vapor.
Description
Die Erfindung bezieht sich auf eine statische Laminar-Mischeinrichtung zum Mischen von Medien unterschiedlicher Viskosität, auf eine Zumischvorrichtung für das Zuführen eines Mediums, sowie auf die Verwendung der Mischeinrichtung und der Zumischvorrichtung.The invention relates to a static laminar mixing device for mixing media of different viscosities, to a mixing device for supplying a medium, and to the use of the mixing device and the mixing device.
Statische Laminar-Mischeinrichtungen sind aus sogenannten statischen Mischern aufgebaute Anlagen, in denen die Strömung der zu mischenden Medien, z.B. Flüssigkeit mit Flüssigkeit oder Flüssigkeit mit Gas, laminar bleibt. Derartige Laminar-Mischer werden in Mischeinrichtungen zum Mischen von z.B. Flüssigkeiten stark verschiedener Viskosität, wie beim Zumischen niedrigviskoser, löslicher Additive zu hochviskosen Flüssigkeiten verwendet.Static laminar mixing devices are systems built from so-called static mixers, in which the flow of the media to be mixed, e.g. Liquid with liquid or liquid with gas, remains laminar. Such laminar mixers are used in mixing devices for mixing e.g. Liquids of widely differing viscosities, such as those used when admixing low-viscosity, soluble additives to high-viscosity liquids.
Beim Mischen wird die niedrigviskose (leichtflüssige) Flüssigkeit dem Hauptstrom der hochviskosen (zähflüssigen) Flüssigkeit z.B. über ein Rohr zugeführt, das vor dem oder direkt am Eingang zum Mischerelement angeordnet sein kann und in den Hauptstrom der hochviskosen Flüssigkeit mündet.When mixing, the low-viscosity (low-viscosity) liquid becomes the main stream of the high-viscosity (Viscous) liquid supplied, for example, via a tube which can be arranged in front of or directly at the entrance to the mixer element and opens into the main stream of the highly viscous liquid.
Wenn die Viskositäten der zu mischenden Flüssigkeiten um Grössenordnungen (Unterschied 5 x 10³ bis 10⁶ oder mehr) verschieden sind, sind für das Erreichen genügender Auflösung und/oder Durch-Mischung relativ grosse Mischerlängen in den Mischereinrichtungen notwendig. Die Erfindung, wie sie in den Ansprüchen definiert ist, hat zur Aufgabe Laminar-Mischeinrichtungen zu schaffen, die verbesserte Mischeigenschaften beim Mischen von Komponenten wesentlich verschiedener Viskositäten haben. Dies kann durch eine Laminar-Mischeinrichtung mit den Merkmalen von Anspruch 1 erreicht werden.If the viscosities of the liquids to be mixed differ by orders of magnitude (difference 5 x 10³ to 10⁶ or more), relatively long mixer lengths in the mixer devices are necessary to achieve sufficient dissolution and / or thorough mixing. The object of the invention, as defined in the claims, is to provide laminar mixing devices which have improved mixing properties when mixing components of substantially different viscosities. This can be achieved by a laminar mixing device with the features of
Die Verwendungsansprüche beziehen sich auf besonders vorteilhafte Anwendungen der Mischereinrichtung und/oder der Zumischeinrichtung. Die abhängigen Ansprüche schliesslich beziehen sich auf vorteilhafte Weiterbildungen der Erfindung.The use claims relate to particularly advantageous applications of the mixer device and / or the admixing device. Finally, the dependent claims relate to advantageous developments of the invention.
Mit der Laminar-Mischeinrichtung kann mit der gleichen Gesamt-Zahl von Mischeinsätzen in den beiden Mischern mit unterschiedlichem Querschnitt nicht nur eine verbesserte Durchmischung erzielt, sondern eine wesentlich verbesserte Auflösung der zugemischten Flüssigkeit bzw. des zugemischten Gases in der hochviskosen Flüssigkeit des Hauptstroms erzielt werden.With the laminar mixing device, with the same total number of mixing inserts in the two mixers with different cross-sections, not only can improved mixing be achieved, but also a significantly improved dissolution of the added liquid or admixed gas can be achieved in the highly viscous liquid of the main stream.
Werden z.B. in einer Laminar-Mischeinrichtung für Polystyrol, die eine einzige Mischkolonne von etwa 1.5 m Länge aufweist, und die mit dreissig Mischelementen vom SULZER-Typ SMX® DN50 bestückt ist, nur 1 bis 2 % Mineralöl/Paraffinöl-Additivs im Polystyrol gelöst, sind es mit einer Laminar-Mischeinrichtung nach der Erfindung beträchtliche 4 bis 6 % des Additivs, die gelöst sind und bei gleichzeitiger Verwendung der neuen Mischdüse noch mehr. Die Mischereinrichtung weist eine erste, mit zwölf Mischelementen vom SULZER-Typ SMX® DN17 bestückte Mischkolonne, auch Vormischer genannt, und eine zweite, mit achtzehn Mischelementen vom SULZER-Typ SMX® DN50 bestückte Mischkolonne, auch Hauptmischer genannt, auf. Die beiden Mischkolonnen der neuen Mischeinrichtung nach der Erfindung, weisen zusammen eine Länge von lediglich 1.1 m auf bei wesentlich verbesserter, mindestens verdoppelter Zumischmenge des Additivs. Die Zahl der Mischelemente in der ersten Mischkolonne sollte wenigstens vier, aber weniger als die Hälfte der Gesamtzahl der Mischelemente in den beiden Mischkolonnen sein.E.g. In a laminar mixing device for polystyrene, which has a single mixing column of about 1.5 m in length, and which is equipped with thirty SULZER-type SMX® DN50 mixing elements, only 1 to 2% mineral oil / paraffin oil additives are dissolved in the polystyrene with a laminar mixing device according to the invention considerable 4 to 6% of the additive which is dissolved and even more when the new mixing nozzle is used at the same time. The mixer device has a first mixing column equipped with twelve SULZER-type SMX® DN17 mixing elements, also called a pre-mixer, and a second mixing column equipped with eighteen SULZER-type SMX® DN50 mixing elements, also called a main mixer. The two mixing columns of the new mixing device according to the invention together have a length of only 1.1 m with a substantially improved, at least doubled, amount of admixture of the additive. The number of mixing elements in the first mixing column should be at least four, but less than half the total number of mixing elements in the two mixing columns.
Die neue Zumischvorrichtung mit der verengenden Blende im Hauptstrom der hochviskosen Flüssigkeit und die im Bereich der Einmündung des Zufuhrrohrs für das niedrigviskose Medium angeordnet ist, kann die maximal mögliche, homogen einmischbare Menge des Additivs bzw. des niedrigviskosen Mediums im Vergleich zu herkömmlichen Zumischvorrichtungen bzw. Dosiervorrichtungen um bis zu etwa einen Drittel erhöhen. Mit dem Einbringen der verengenden Blende ergibt sich auch bei laminaren Strömungsverhältnissen ein verbessertes Ablösen kleinerer Tropfen der niederviskosen Komponente aus der Zuleitungsdüse. Der Querschnitt von Mischkolonnen ist praktisch immer kreisförmig und der Durchmesser der ebenfalls zweckmässigerweise kreisförmigen Blende sollte in der Regel höchstens 2/3 des Durchmessers des Hauptstroms, d.h. der Mischerkolonne, sein. Eine Zumischvorichtung, auch Dosierstelle genannt, kann auch mehrere Blenden, die nebeneinander angeordnet sind, umfassen. In diesem Fall wären auch mehrere Blenden mit Zufuhrrohr für das Additiv über den Querschnitt des Hauptstroms verteilt. Der Gesamtquerschnitt der mehreren Blendenöffnungen sollte in diesem Fall mit Vorteil kleiner als die Hälfte des Querschnitts des Hauptstroms sein. Es ist festzuhalten, dass die Strömung auch im Bereich der verengenden Blenden immer laminar ist.The new admixing device with the constricting orifice in the main flow of the highly viscous liquid and which is arranged in the region of the mouth of the feed pipe for the low-viscosity medium can achieve the maximum possible, homogeneously miscible amount of the additive or the low-viscous medium in comparison to conventional admixing devices or metering devices by up to about a third. With the introduction of the narrowing orifice there is an improved detachment of smaller drops of the low-viscosity component from the supply nozzle, even in laminar flow conditions. The cross section of mixing columns is practically always circular and the diameter of the likewise expediently circular orifice should generally be at most 2/3 of the diameter of the main stream, ie the mixer column. A mixing device, also called a metering point, can also comprise several orifices which are arranged next to one another. In this case, several orifices with a feed tube for the additive would also be distributed over the cross section of the main flow. In this case, the total cross section of the plurality of orifices should advantageously be less than half the cross section of the main flow. It should be noted that the flow is always laminar even in the area of the restricting orifices.
In Verbindung mit einer verbesserten Laminar-Mischeinrichtung nach der Erfindung kommt die Leistungsfähigkeit der neuen Dosiervorrichtung zur Unterstützung der erhöhten Mischleistung der Mischeinrichtung besonders gut zur Geltung.In conjunction with an improved laminar mixing device according to the invention, the performance of the new metering device to support the increased mixing performance of the mixing device is particularly effective.
Die Strömungsgeschwindigkeiten im Vor- und Hauptmischer liegen typisch im Bereich von einem bis hundert mmsec⁻¹, beispielsweise von etwa 50 mmsec⁻¹ im Vor- bzw. 1 bis 10 mmsec⁻¹ im Hauptmischer.The flow velocities in the pre-mixer and main mixer are typically in the range from one to a hundred mmsec⁻¹, for example from about 50 mmsec⁻¹ in the pre-mixer and 1 to 10 mmsec⁻¹ in the main mixer.
Die statische Laminar-Mischeinrichtung für das Mischen von Medien mit stark unterschiedlicher Viskosität, weist zwei nacheinander angeordnete Mischer mit unterschiedlichem Querschnitt auf. Der Querschnitt des ersten Mischers ist kleiner. Die Zumischvorrichtung für das Dosieren des Additivs mit niedrigerer Viskosität als das Medium des Hauptstroms, weist eine Blende auf, in deren Öffnung die Düse mündet. Sowohl mit der Laminar-Mischeinrichtung allein, als auch mit der Zumischvorrichtung allein, besonders aber in Kombination, werden deutlich verbesserte Mischergebnisse erreicht. Mit der Mischeinrichtung werden beim Zumischen und Lösen von Additiven, wie Mineralöl/Paraffin zu Kunstoffschmelzen und Polystyrol, ausgezeichnete Resultate erzielt.The static laminar mixing device for mixing media with very different viscosities has two consecutively arranged mixers with different cross sections. The cross section of the first mixer is smaller. The admixing device for metering the additive with a lower viscosity than the medium of the main stream has an orifice in the opening of which the nozzle opens. Both with the laminar mixing device alone and with the admixing device alone, but especially in combination, significantly improved mixing results are achieved. Excellent results are achieved with the mixing device when adding and dissolving additives such as mineral oil / paraffin to plastic melts and polystyrene.
Nachstehend wird die Erfindung anhand der in den schematischen Schnitt-Zeichnungen dargestellten Ausführungsbeispielen näher erläutert.The invention is explained in more detail below on the basis of the exemplary embodiments illustrated in the schematic sectional drawings.
Es zeigen:
- Fig. 1A
- Eine Laminar-Mischeinrichtung bisheriger Bauart, die nur aus einer einzigen Mischkolonne besteht. Die Mischkolonne weist aber eine neue Zumischvorrichtung auf;
- Fig. 1B
- eine Laminar-Mischeinrichtung nach der Erfindung, mit zwei Mischkolonnen von unterschiedlichem Querschnitt;
- Fig. 2
- eine Zumischvorrichtung, bei der das niederviskose Additiv dem hochviskosen Hauptstrom von der Seite zugeführt wird;
- Fig. 3
- Eine andere Zumischvorrichtung, bei welcher der hochviskose Hauptstrom von der Seite dem Mischdüsenbereich der Zumischvorrichtung zugeführt wird;
- Fig. 4A
- eine Zumischvorrichtung, in welcher der hochviskose Hauptstrom in zwei Teil-Hauptströme aufgeteilt wird. Jedem Teilhauptstrom wird mit einer Düse das niederviskose Additiv für jeden der Teilhauptströme den statischen Mischern zugeführt;
- Fig. 4B
- der Schnitt nach IV B - IV B von Fig. 4A durch die beiden Mischer für die Teil-Hauptströme.
- Fig. 1A
- A laminar mixing device of the previous type, which consists of only a single mixing column. The mixing column, however, has a new admixing device;
- Figure 1B
- a laminar mixing device according to the invention, with two mixing columns of different cross-section;
- Fig. 2
- an admixing device in which the low-viscosity additive is supplied to the high-viscosity main stream from the side;
- Fig. 3
- Another admixing device, in which the highly viscous main stream is fed from the side to the mixing nozzle area of the admixing device;
- Figure 4A
- a mixing device in which the highly viscous main stream is divided into two main streams. The low-viscosity additive for each of the sub-main streams is fed to the static mixers with each sub-main stream;
- Figure 4B
- the section according to IV B - IV B of Fig. 4A through the two mixers for the partial main streams.
Der Mischer 1 von Fig. 1A weist beispielsweise dreissig Mischelemente 11 auf, die abwechselnd kreuzweise zueinander in der Kolonne 10 aneinandergereiht sind. Dem Hauptstrom 12 des hochviskosen Mediums, beispielsweise eines Kunststoffs wird in der Zumischvorrichtung 1213 das niederviskose Additiv 13, z.B. ein Mineralöl/Paraffin, zugeführt. Die Zumischvorrichtung 1213 umfasst eine Blende 14 für den Hauptstrom 12, in deren Öffnung die Düse 15 mündet. Am Ausgang des Mischers 1 ist das zugeführte Additiv 12 im Kunststoff gelöst und/oder homogen verteilt. Nach herkömmlicher Bauart könnte anstelle der neuen Zumischvorrichtung 1213 auch irgendein anderer bekannter Zumischer vorgesehen sein; beispielsweise einer, wie in Fig. 1B gezeigt.The
Die Laminar-Mischereinrichtung 1′ von Fig. 1B besteht aus dem Vormischer 1a (der Hauptstrom erfährt darin relativ hohe Scherung/Schergeschwindigkeit in der Grössenordnung τ ≈ 20-200 s⁻¹) und dem Hauptmischer 1b (der Hauptstrom erfährt darin relativ niedrige Scherung/Schergeschwindigkeit in der Grössenordnung τ ≈ 1-5 s⁻¹), der einen grösseren Querschnitt als der Vormischer 1a aufweist. Der Mischer 1a ist mit z.B. zwölf kreuzweise angeordnete Mischeremente 11a bestückt. Der Mischer Ib umfasst beispielsweise achtzehn, ebenfalls kreuzweise angeordnete Mischerelemente 11b. Das niedrigviskose Medium/Additiv 13′ (z.B. Paraffinöl) wird in der Zumischanordnung bzw. Dosiervorrichtung 1213′ dem Hauptstrom 12′ des zähflüssigen Mediums (z.B. ein Kunststoff wie Polystyrol) zugemischt. Anstelle der als konventionell dargestellten Zumischvorrichtung könnte auch eine neue Dosiervorrichtung mit Blende vorgesehen sein. Es wäre auch denkbar, zwischen den beiden Mischern 1a und 1b der Mischvorrichtung 1′ ein Übergangsstück mit einer Uebergangsstrecke ohne Mischelemente anzuordnen.The laminar mixer device 1 'of Fig. 1B consists of the premixer 1a (the main flow experiences relatively high shear / shear rate in the order of magnitude τ ≈ 20-200 s⁻¹) and the
Mit der neuen Einrichtung von Fig. 1B ist es z.B. bei praktisch gleicher Verweilzeit, bei allerdings höherem Druckverlust (etwa 62 bar gegenüber etwa 36 bar) möglich, auf einer kürzeren Strecke eine etwa doppelte bis dreifache Menge Additiv zuzumischen und im Hauptstrom zu lösen.With the new device of Fig. 1B it is e.g. With practically the same dwell time, but with a higher pressure loss (about 62 bar compared to about 36 bar), it is possible to mix in about twice to three times the amount of additive over a shorter distance and to dissolve it in the main stream.
In der Zumisch- oder Dosiervorrichtung 2 von Fig. 2 wird der Additivstrom 21 über die Düse 22 mit dem Düsenkanal 220 dem Hauptstrom 23 im Bereich der Öffnung 20 der Blende 24 zugeführt. Die Zuführung des Additivs 21 erfolgt seitlich zur Düse 22, die im Steg 25 montiert ist. Der Düsenkanal 220 und die Blendenöffnung 20 münden direkt in den Mischer 26 mit den Mischelementen 27.In the admixing or
In der Zumisch- und Dosiervorrichtung 3 von Fig. 3 wird der Hauptstrom 33 der zähflüssigen Komponente umgelenkt und der Mischerkolonne 36 mit den Mischelementen 37 über die kanalartig ausgebildete Öffnung 30 der Blende 34 zugeführt. Die Düse 32 mit dem Düsenkanal 320 für den leichterflüssigen Additivstrom 31, ist in diesem Beispiel nicht abgewinkelt, in Richtung der Mischerkolonne 36 gerichtet.In the admixing and
Die Zumischvorrichtung 4 von Fig. 4A und 4B weist zwei Düsen 42 und 42′ für Additiv 41 auf. Der Hauptstrom 430 des höherviskosen Mittels teilt sich in die beiden parallelen Teil-Hauptströme 43 und 43′, welche durch die mit Mischelementen 47 bzw. 47′ bestückten Mischer 46 bzw. 46′ fliessen. In der plattenförmigen Blende 44 sind die beiden Blendenöffnungen 40 bzw. 40′ vorhanden, in welche konzentrisch die Düsenrohre 42 bzw. 42′ münden.The admixing device 4 of Fig. 4A and 4B has two
Die parallel verlaufenden Mischer 46 und 46′ mit den Teil-Hauptströmen 43 und 43′ könnten, was hier nicht gezeichnet ist, den Vormischer für einen gemeinsamen Hauptmischer einer statischen Laminar-Mischeinrichtung bilden.The
Als Mischerelemente sind beispielsweise die SULZER Typ SMX-Mischerelemente geeignet. Beim niedrigviskoses Additiv könnte es sich auch um ein Gas, wie etwa N₂, CO₂ oder H₂O-Dampf, handeln.For example, the SULZER type SMX mixer elements are suitable as mixer elements. The low-viscosity additive could also be a gas such as N₂, CO₂ or H₂O vapor.
Claims (8)
- A static laminar mixing device (1') for mixing media of widely different viscosities, having - looking in the direction of flow - a first static mixer (1a) and a second static mixer (1b) of which the cross-section in the direction of flow is greater than that of the first mixer (1a), both mixers being armed with miner elements which are in them selves the same, and the number of mixer elements in the first mixer (1a) being at least four but less than half the total number of mixer elements in both mixers, and the said mixing device also having before the inlet or at the inlet to the first mixer (1a) an admixing device (1213) by which a low-viscosity medium (13) is fed to the flow of the higher-viscosity medium (12).
- A static laminar mixing device (1') as in Claim 1, having a ratio between the cross-section of the first mixer (1a) and the cross-section of the second mixer (1b) of less than or equal to one to two (ratio V ≦ 1:2).
- A static laminar mixing device (1') as in Claim 1 or 2, in which the first mixer (1a) consists of a number of mixer columns (46, 46') arranged in parallel.
- A static laminar mixing device (1') as in one of the Claims 1 to 2, having for arrangement in the flow (12) of a first medium, before or in the static laminar mixer (1a), an admixing device (1213) which has in the flow (12) of the first medium a convergent orifice plate (14) which is arranged in the region of the mouth of the duct for feeding a second medium (13) into the flow (12) of the first medium.
- A static laminar mixing device (1') as in Claim 4, in which the opening in the orifice plate (14) of the admixing device (1213) exhibits a cross-section of at most half the cross-section of flow (12) of the first medium before the orifice plate.
- A static laminar mixing device (1') as in Claim 4 or 5, in which the admixing device exhibits an orifice plate (44) having a number of openings (40, 40').
- Use of a laminar mixing device (1') as in one of the Claims 1 to 6, for the mixing of liquids having a difference in viscosity in the range of orders of magnitude from 5 x 10² to 10⁷.
- Use of a laminar mixing device (1') as in one of the Claims 1 to 6, for the intermixing of mineral oil with a polystyrene melt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH274390 | 1990-08-23 | ||
| CH2743/90 | 1990-08-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0472491A1 EP0472491A1 (en) | 1992-02-26 |
| EP0472491B1 true EP0472491B1 (en) | 1995-02-22 |
Family
ID=4240616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91810565A Expired - Lifetime EP0472491B1 (en) | 1990-08-23 | 1991-07-12 | Static laminar mixing device, admixing device, as well as the use of the mixing and admixing device |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US6419386B1 (en) |
| EP (1) | EP0472491B1 (en) |
| JP (1) | JP3187462B2 (en) |
| CA (1) | CA2047599C (en) |
| DE (1) | DE59104667D1 (en) |
| ES (1) | ES2068558T3 (en) |
| FI (1) | FI95663C (en) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19524182A1 (en) * | 1995-07-03 | 1997-01-09 | Basf Ag | Process and device for the continuous production of polymers |
| EP0766996B1 (en) | 1995-10-05 | 2000-03-08 | Sulzer Chemtech AG | Apparatus for mixing a low viscosity fluid with a high viscosity fluid |
| US6405759B1 (en) | 1997-08-05 | 2002-06-18 | Owens Corning Composites Sprl | Apparatus for the continuous preparation of glass fiber sizing compositions |
| ATE308375T1 (en) * | 2000-02-17 | 2005-11-15 | Sulzer Chemtech Ag | STATIC MIXER |
| JP2002189106A (en) * | 2000-12-20 | 2002-07-05 | Dainippon Printing Co Ltd | Glare-proof film, method for manufacturing the same and display device using glare-proof film |
| DE60210765T2 (en) | 2001-06-01 | 2007-02-08 | E.I. Dupont De Nemours And Co., Wilmington | METHOD FOR MIXING LIQUIDS OR GASES WITH STRONG DIFFERENT VISCOSITY |
| CN100374188C (en) * | 2001-06-01 | 2008-03-12 | 纳幕尔杜邦公司 | Process for blending fluids of widely differing viscosities |
| US7199242B2 (en) | 2001-08-02 | 2007-04-03 | Lg Life Sciences Limited | Processes for the production of amino-protected derivatives of 4-aminomethylene-pyrrolidin-3-one and/or 4-aminomethylene-pyrrolidin-3-alkoxyimino derivatives and/or 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 |
| FR2843966A1 (en) * | 2002-08-30 | 2004-03-05 | Bp Chem Int Ltd | METHOD AND APPARATUS FOR DEGASSING A POLYMER |
| US7351749B2 (en) * | 2002-12-16 | 2008-04-01 | Unilever Home & Personal Care Usa, Division Of Conopco, Inc. | Process for manufacture of personal care products utilizing a concentrate water phase |
| TWI351306B (en) | 2003-05-16 | 2011-11-01 | Sulzer Chemtech Ag | Method of mass transfer of a material or heat |
| DE502004006983D1 (en) * | 2003-08-26 | 2008-06-12 | Sulzer Chemtech Ag | Static mixer with polymorphic structure |
| US7081233B2 (en) * | 2004-05-18 | 2006-07-25 | Dynamax Engineering Ltd. | Method and apparatus for degassing liquid sulfur |
| ATE401123T1 (en) | 2004-12-17 | 2008-08-15 | Borealis Tech Oy | METHOD FOR POLYMERIZING OLEFINS IN THE PRESENCE OF AN OLEFIN POLYMERIZATION CATALYST |
| WO2009092730A1 (en) * | 2008-01-22 | 2009-07-30 | Basf Se | Production of additive mixtures |
| US20110052702A1 (en) * | 2008-01-24 | 2011-03-03 | National Institute Of Advanced Industrial Science And Technology | Method and Apparatus for Producing Organic Nanotubes |
| DE102010039700A1 (en) * | 2010-08-24 | 2012-03-01 | Bayer Technology Services Gmbh | Apparatus and method for gas dispersion |
| US9174362B2 (en) | 2011-07-12 | 2015-11-03 | Castagra Products, Inc. | Solvent-free plural component spraying system and method |
| EP2735604A1 (en) * | 2012-11-22 | 2014-05-28 | Castrol Limited | Method of preparing a lubricant composition |
| EP3241611B1 (en) | 2016-05-02 | 2020-03-04 | Borealis AG | A process for feeding a polymerisation catalyst |
| BR112019000068B1 (en) | 2016-07-05 | 2023-04-11 | Ineos Americas, Llc | CONTINUOUS PROCESS FOR ACID GAS REMOVAL |
| CN112742232B (en) * | 2019-10-29 | 2023-04-18 | 中国石油化工股份有限公司 | Ammonia spraying static mixer |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3770208A (en) * | 1970-11-23 | 1973-11-06 | Ethyl Corp | Mixing nozzle |
| DE2315114B2 (en) * | 1973-03-27 | 1979-08-23 | Basf Ag, 6700 Ludwigshafen | Process for mixing liquids with large differences in viscosity |
| BE798607A (en) * | 1973-04-24 | 1973-10-24 | Popov Vitaly F | GAS AND / OR LIQUID MIXER WITH EJECTOR |
| US4008072A (en) * | 1974-09-16 | 1977-02-15 | The Anaconda Company | Sulfidization reaction |
| FR2412627A1 (en) * | 1977-12-22 | 1979-07-20 | Rhone Poulenc Textile | METHOD AND DEVICE FOR OBTAINING DOUBLE-COMPONENT YARNS |
| US4255125A (en) * | 1978-12-15 | 1981-03-10 | Exxon Research & Engineering Co. | Mixing apparatus and the uses thereof |
| JPS5939174B2 (en) * | 1982-02-01 | 1984-09-21 | 名友産業株式会社 | fluid mixing device |
| FR2548043A1 (en) * | 1983-06-14 | 1985-01-04 | Saint Gobain Vitrage | METHOD AND DEVICE FOR CASTING MANUFACTURE OF TRANSPARENT OPTICALLY HOMOGENEOUS LAYER FROM COMPONENT MIXTURE |
| GB8604673D0 (en) * | 1986-02-25 | 1986-04-03 | Shaw Co Manchester Ltd Francis | Treating viscous material |
| US4861165A (en) * | 1986-08-20 | 1989-08-29 | Beloit Corporation | Method of and means for hydrodynamic mixing |
| JPS6434427A (en) * | 1987-07-30 | 1989-02-03 | Tanaka Shokuhin Kikai Kk | Method for mixing fluids having different viscosity |
| US5044558A (en) * | 1989-05-09 | 1991-09-03 | Halliburton Company | Burner nozzle with replaceable air jetting assembly |
-
1991
- 1991-07-12 DE DE59104667T patent/DE59104667D1/en not_active Expired - Lifetime
- 1991-07-12 ES ES91810565T patent/ES2068558T3/en not_active Expired - Lifetime
- 1991-07-12 EP EP91810565A patent/EP0472491B1/en not_active Expired - Lifetime
- 1991-07-23 CA CA002047599A patent/CA2047599C/en not_active Expired - Fee Related
- 1991-08-20 JP JP20822091A patent/JP3187462B2/en not_active Expired - Fee Related
- 1991-08-20 FI FI913934A patent/FI95663C/en not_active IP Right Cessation
-
1995
- 1995-05-26 US US08/456,001 patent/US6419386B1/en not_active Expired - Lifetime
- 1995-06-06 US US08/470,374 patent/US6428200B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0472491A1 (en) | 1992-02-26 |
| CA2047599A1 (en) | 1992-02-24 |
| ES2068558T3 (en) | 1995-04-16 |
| JP3187462B2 (en) | 2001-07-11 |
| FI95663B (en) | 1995-11-30 |
| JPH0687120A (en) | 1994-03-29 |
| FI95663C (en) | 1996-03-11 |
| CA2047599C (en) | 2003-09-23 |
| US6419386B1 (en) | 2002-07-16 |
| US6428200B1 (en) | 2002-08-06 |
| FI913934A0 (en) | 1991-08-20 |
| DE59104667D1 (en) | 1995-03-30 |
| FI913934A (en) | 1992-02-24 |
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