DE102011075558A1 - Device useful for mixing several fluids, of which one fluid is partially formed from a chemical, in main stream bounded by channel wall, comprises main mixing chamber, which is connected to premix chamber, comprising baffle surfaces - Google Patents

Device useful for mixing several fluids, of which one fluid is partially formed from a chemical, in main stream bounded by channel wall, comprises main mixing chamber, which is connected to premix chamber, comprising baffle surfaces Download PDF

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DE102011075558A1
DE102011075558A1 DE102011075558A DE102011075558A DE102011075558A1 DE 102011075558 A1 DE102011075558 A1 DE 102011075558A1 DE 102011075558 A DE102011075558 A DE 102011075558A DE 102011075558 A DE102011075558 A DE 102011075558A DE 102011075558 A1 DE102011075558 A1 DE 102011075558A1
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mixing
main
fluid
chamber
main stream
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German (de)
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Thomas Jaschinski
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Voith Patent GmbH
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Voith Patent GmbH
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • B01F25/31324—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices arranged concentrically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • 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
    • B01F25/421—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 by moving the components in a convoluted or labyrinthine path
    • B01F25/423—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 by moving the components in a convoluted or labyrinthine path by means of elements placed in the receptacle for moving or guiding the components
    • B01F25/4231—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 by moving the components in a convoluted or labyrinthine path by means of elements placed in the receptacle for moving or guiding the components using baffles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—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
    • B01F25/4311—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10—Maintenance of mixers
    • B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
    • B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0418—Geometrical information
    • B01F2215/0422—Numerical values of angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0436—Operational information
    • B01F2215/0481—Numerical speed values

Abstract

Device for mixing several fluids, of which at least one fluid is at least partially formed from a chemical, in a main stream (6) bounded by a channel wall, in which at least two fluids before mixing in the main stream are contacted with each other in a premix chamber (7) to form a mixed fluid, comprises a main mixing chamber (8), which is connected to the premix chamber, comprising baffle surfaces (9) for changing the direction of flow of a mixed fluid stream.

Description

Die Erfindung betrifft eine Vorrichtung zur Einmischung von mehreren Fluiden, von denen zumindest ein Fluid wenigstens teilweise von einer Chemikalie gebildet wird, in einen von einer Kanalwand begrenzten Hauptstrom, wobei zumindest zwei Fluide vor der Einmischung in den Hauptstrom in einem Vormischraum miteinander in Kontakt gebracht werden und ein Mischfluid bilden.The invention relates to a device for mixing a plurality of fluids, of which at least one fluid is at least partially formed by a chemical, into a main flow delimited by a duct wall, wherein at least two fluids are brought into contact with each other before being mixed into the main flow in a premixing space and form a mixed fluid.

Bei der Herstellung einer Faserstoffsuspension kommen zunehmend Chemikalien zum Einsatz, die den Herstellungsprozess und/oder die Qualität der Faserstoffbahn positiv beeinflussen sollen. Dabei handelt es sich meist um Fixier- oder Retentionsmittel.In the production of a pulp suspension increasingly chemicals are used, which should positively influence the manufacturing process and / or the quality of the fibrous web. These are usually fixing or retention agents.

Beim Zuführen eines Fluids in einen Hauptstrom, insbesondere jedoch in eine strömende Faserstoffsuspension stellt sich grundsätzlich das Problem einer möglichst guten Durchmischung. Dabei ist der Grad der Durchmischung auch mit dem Chemikalienbedarf verbunden.When feeding a fluid into a main stream, but in particular into a flowing pulp suspension, there is basically the problem of the best possible thorough mixing. The degree of mixing is also linked to the need for chemicals.

Um den Chemikalienbedarf zu minimieren gibt es bereits seit längerer Zeit Bestrebungen die Durchmischung zu verbessern, was jedoch bisher noch nicht ausreichend befriedigen kann.In order to minimize the need for chemicals, there has long been an effort to improve the mixing, which, however, can not yet sufficiently satisfy.

Problematisch sind dabei insbesondere auch Ablagerungen im Bereich der Eindüsung.In particular, deposits in the area of the injection are also problematic.

Ähnliche Probleme ergeben sich aber auch bei der chemischen Behandlung von im Hauptstrom geführtem Wasser.But similar problems also arise in the chemical treatment of guided in the main stream of water.

Die Aufgabe der Erfindung ist es daher eine möglichst umfassende und schonende Einmischung von Chemikalien in den Hauptstrom zu gewährleisten.The object of the invention is therefore to ensure the most comprehensive and gentle mixing of chemicals in the main stream.

Erfindungsgemäß wurde die Aufgabe dadurch gelöst, dass sich an den Vormischraum ein Hauptmischraum anschließt, welcher Prallflächen zur Veränderung der Strömungsrichtung des Mischfluid-Stroms besitzt.According to the invention, this object is achieved in that adjoins the premixing a main mixing chamber, which has baffles for changing the flow direction of the mixed fluid flow.

Über die Prallflächen kann eine Verwirbelung des Mischfluid-Stroms erreicht werden, wodurch sich die Vermischung innerhalb des Hauptmischraumes wesentlich verbessert. Außerdem kann so beim Mischfluid-Strom auch ein Drall erzeugt werden, was die Vermischung beim Eintritt des Mischfluid-Stromes in den Hauptstrom intensiviert.Via the baffles, a turbulence of the mixed fluid flow can be achieved, whereby the mixing within the main mixing chamber is substantially improved. In addition, a swirl can thus be generated in the mixing fluid flow, which intensifies the mixing when the mixed fluid flow enters the main flow.

Zusätzlich kann die Vermischung im Vormischraum und/oder im Hauptmischraum über eine dort vorgesehene Mischvorrichtung, vorzugsweise in Form eines statischen Mischers noch weiter verbessert werden.In addition, the mixing in the premixing chamber and / or in the main mixing chamber can be further improved by means of a mixing device provided there, preferably in the form of a static mixer.

Um eine Reinigung der Mischvorrichtung zu erleichtern, ist es von Vorteil, wenn sich am zum Hauptstrom weisenden Ende des Hauptmischraumes eine Absperrvorrichtung, insbesondere ein Schieber befindet. Bei geschlossener Absperrvorrichtung sind der Hauptmischraum und der Vormischraum vom Hauptstrom abgeschnitten. Dies ermöglicht es beide Mischräume mit einer Reinigungsflüssigkeit zu spülen, was der Bildung von Ablagerungen wirksam entgegenwirkt. Anschließend kann die Absperrvorrichtung wieder geöffnet werden und die Eindüsung der Fluide in den Hauptstrom erfolgen.In order to facilitate a cleaning of the mixing device, it is advantageous if a shut-off device, in particular a slide, is located on the end of the main mixing chamber facing the main flow. When the shut-off device is closed, the main mixing chamber and the pre-mixing chamber are cut off from the main flow. This makes it possible to flush both mixing chambers with a cleaning liquid, which effectively counteracts the formation of deposits. Subsequently, the shut-off device can be opened again and the injection of the fluids into the main flow.

Im Interesse einer einfachen Ausführung ist es vorteilhaft, wenn die Prallflächen von Prallplatten gebildet werden, die in den Mischfluid-Strom hineinragen. Um den Grad der Verwirbelung und/oder die Ausrichtung eines Dralls zu beeinflussen, sollte die Ausrichtung zumindest einer Prallfläche veränderbar, insbesondere steuerbar sein.In the interest of a simple embodiment, it is advantageous if the baffles are formed by baffles, which protrude into the mixing fluid flow. In order to influence the degree of turbulence and / or the orientation of a twist, the orientation of at least one baffle should be variable, in particular controllable.

Je nach Anforderung, Art der Chemikalien und Einsatzfeld kann es von Vorteil, sein, wenn wenigstens ein weiteres Fluid erst im Hauptmischraum mit dem Mischfluid-Strom in Kontakt gebracht, insbesondere vermischt wird. Depending on the requirements, the nature of the chemicals and the field of application, it may be advantageous if at least one further fluid is brought into contact, in particular mixed, with the mixed fluid flow only in the main mixing chamber.

Um die Vermischung des Mischfluid-Stroms auch bei der Eindüsung in den Hauptstrom zu fördern, sollte der Mischfluid-Strom mit einem Winkel zwischen 10 und 170°, vorzugsweise zwischen 70 und 110° zur Strömungsrichtung des Hauptstroms geneigt in diesen eingedüst werden.In order to promote the mixing of the mixed fluid flow also in the injection into the main flow, the mixed fluid flow should be injected at an angle between 10 and 170 °, preferably between 70 and 110 ° inclined to the flow direction of the main flow in this.

Besondere Vorteile bietet die Erfindung hinsichtlich der Durchmischung bei einem von einer Faserstoffsuspension zur Herstellung einer Papier-, Karton-, Tissue- oder einer anderen Faserstoffbahn gebildeten Hauptstrom.The invention offers particular advantages in terms of mixing in a main stream formed by a pulp suspension for producing a paper, board, tissue or other fibrous web.

Vorteilhaft ist die Anwendung jedoch ebenso bei Hauptströmen, die von Prozess-, Frischwasser o.ä gebildet werden.However, the application is also advantageous in the case of main streams which are formed by process water, fresh water or the like.

Nachfolgend soll die Erfindung an mehreren Ausführungsbeispielen näher erläutert werden.The invention will be explained in more detail below with reference to several exemplary embodiments.

In der beigefügten Zeichnung zeigen die 1 bis 3 schematische Querschnitte von verschieden gestalteten Mischdüsen zur Vermischung von mehreren Fluiden 1, 2, 3, 4 und zur Eindüsung des daraus entstehenden Mischfluid-Stromes in einen Hauptstrom 6 aus einer Faserstoffsuspension, wie sie zur Herstellung einer Papierbahn verwendet wird.In the accompanying drawing show the 1 to 3 schematic cross sections of differently shaped mixing nozzles for mixing of several fluids 1 . 2 . 3 . 4 and for injection of the resulting mixed fluid stream into a main stream 6 from a pulp suspension, as used to make a paper web.

Dabei werden mehrere Fluide 1, 2, 3, 4 zumindest teilweise von einer Chemikalie, wie beispielsweise einem Retentionsmittel, Stärke, einem Biozid, einem Neutralleimungsmittel, einem Farbstoff oder einem Aufheller gebildet. In wenigstens einem Fluid 1, 2, 3, 4 können auch mineralische Stoffe oder Mikro- oder Nanopartikel, wie Bentonit oder Silikat enthalten sein.There are several fluids 1 . 2 . 3 . 4 at least partially formed by a chemical such as a retention aid, starch, a biocide, a neutral sizing agent, a dye or a brightener. In at least one fluid 1 . 2 . 3 . 4 It is also possible for mineral substances or micro- or nanoparticles, such as bentonite or silicate, to be present.

Die Strömungsgeschwindigkeit der Fluide 1, 2, 3, 4 sollte dabei so hoch sein, dass sich keine Ablagerungen an den Wänden der Zuführleitungen oder der Mischräume 7, 8 bilden. Daher sollte die Strömungsgeschwindigkeit der Fluide 1, 2, 3, 4 zwischen 0,05 und 20 m/s, vorzugsweise zwischen 0,1 und 10 m/s und insbesondere zwischen 0,1 und 5 m/s liegen.The flow velocity of the fluids 1 . 2 . 3 . 4 should be so high that no deposits on the walls of the supply lines or mixing rooms 7 . 8th form. Therefore, the flow rate of the fluids should be 1 . 2 . 3 . 4 between 0.05 and 20 m / s, preferably between 0.1 and 10 m / s and in particular between 0.1 and 5 m / s.

Zur Verdünnung der Chemikalien sollte wenigstens eines der Fluide 1, 2, 3, 4 zumindest teilweise von Faserstoffsuspension oder Wasser, insbesondere Prozesswasser, wie Klarfiltrat oder Biowasser gebildet werden.To dilute the chemicals should be at least one of the fluids 1 . 2 . 3 . 4 at least partially formed by pulp suspension or water, in particular process water, such as clear filtrate or bio-water.

Dabei ist es besonders vorteilhaft, wenn bestimmte Chemikalien vor der Vermischung mit der Faserstoffsuspension in ihrer Konzentration soweit vermindert werden, dass es zu keiner Vorreaktion, insbesondere Flockung kommt.It is particularly advantageous if certain chemicals are so far reduced before mixing with the pulp suspension in their concentration that there is no pre-reaction, especially flocculation.

Gemeinsam ist allen Ausführungen, dass drei Fluide 1, 2, 3 in einem Vormischraum 7 der Mischdüse miteinander in Kontakt gebracht werden und sich dabei bereits vermischen.Common to all designs is that three fluids 1 . 2 . 3 in a premix room 7 the mixing nozzle are brought into contact with each other and already mix.

Hierzu werden die Fluide 1, 2, 3 in konzentrisch angeordneten Ringräumen zum Vormischraum 7 geführt. Der dabei entstehende Mischfluid-Strom gelangt dann vom Vormischraum 7 in einen Hauptmischraum 8. Die Zuführung ist aber nicht auf die konzentrische Zuführung der Fluide 1, 2, 3 beschränkt. So ist beispielsweise auch eine T-förmige oder Y-förmige Zuführung möglich.For this purpose, the fluids 1 . 2 . 3 in concentrically arranged annular spaces to the premixing room 7 guided. The resulting mixed fluid stream then passes from the premixing chamber 7 into a main mixing room 8th , The supply is not on the concentric supply of fluids 1 . 2 . 3 limited. For example, a T-shaped or Y-shaped feed is possible.

Zumindest der Hauptmischraum 8 besitzt an der Wand befestigte Prallflächen 9 in Form von Prallplatten zur Verwirbelung und damit Vermischung des Mischfluid-Stromes sowie zur Bildung eines Dralls, der die Eindüsung und Einmischung des Mischfluid-Stromes in den Hauptstrom wesentlich verbessert. At least the main mixing room 8th has baffles attached to the wall 9 in the form of baffle plates for swirling and thus mixing of the mixed fluid flow and for forming a twist, which substantially improves the injection and mixing of the mixed fluid flow into the main flow.

Da die Prallplatten wenn auch nur geringfügig die Gefahr von Ablagerungen erhöhen, besitzt die Mischdüse eine spezielle Vorrichtung zur Reinigung der Mischräume 7, 8. Hierzu befindet sich am zum Hauptstrom 6 weisenden Ende des Hauptmischraumes 8 eine Absperrvorrichtung 10 in Form eines Schiebers.Since the baffles, if only slightly increase the risk of deposits, the mixing nozzle has a special device for cleaning the mixing chambers 7 . 8th , This is located on the main stream 6 pointing end of the main blending room 8th a shut-off device 10 in the form of a slider.

Bei Bedarf kann über diesen Schieber der Hauptmischraum 8 vom Hauptstrom 6 getrennt werden. Dies erlaubt es, den Vormischraum 7 und den Hauptmischraum 8 mit einer Reinigungsflüssigkeit zu spülen. Die Reinigungsflüssigkeit kann dabei über eine oder mehrere Fluid-Zuführungen in die Mischräume 7, 8 geleitet werden.If necessary, the main mixing chamber can be accessed via this slide 8th from the main stream 6 be separated. This allows the premixing room 7 and the main mixing room 8th to rinse with a cleaning fluid. The cleaning fluid can be via one or more fluid feeds into the mixing chambers 7 . 8th be directed.

Nach erfolgter Reinigung und der Abfuhr der Reinigungsflüssigkeit kann der Schieber wieder geöffnet und die Eindüsung des Mischfluid-Stromes in den Hauptstrom 6 fortgesetzt werden.After cleaning and the removal of the cleaning liquid, the slide can be opened again and the injection of the mixed fluid flow into the main stream 6 to be continued.

Beispielsweise zur Anpassung an die Art der Chemikalien, den Grad der Verdünnung oder die Zusammensetzung des Hauptstroms können die in den Mischfluid-Strom hineinreichenden Prallplatten auch in ihrer Ausrichtung veränderbar sein.For example, in order to adapt to the type of chemicals, the degree of dilution or the composition of the main stream, the baffles extending into the mixing fluid stream may also be changeable in their orientation.

Die Eindüsung des Mischfluid-Stromes in den von einer Kanalwand 5 begrenzten Hauptstrom 6 erfolgt hier senkrecht zur Strömungsrichtung des Hauptstroms 6.The injection of the mixed fluid flow into that of a channel wall 5 limited mainstream 6 takes place here perpendicular to the flow direction of the main stream 6 ,

Bei der in 1 gezeigten Ausführung erfolgt die Zuführung eines weiteren Fluids 4 in den Hauptmischraum 8, wo das Fluid 4 mit dem Mischfluid-Strom vermischt wird. Dabei sind Prallplatten nur im Hauptmischraum 8 und dort vor und nach dem Schieber angeordnet. Auf diese Weise wird die Einmischung des weiteren Fluids 4 und die Ausbildung eines Dralls des Mischfluid-Stromes kurz vor dem Eintritt in den Hauptstrom 6 unterstützt.At the in 1 As shown embodiment, the supply of another fluid takes place 4 in the main mixing room 8th where the fluid 4 is mixed with the mixed fluid stream. Here, baffles are only in the main mixing chamber 8th and arranged there before and after the slider. In this way, the interference of the other fluid 4 and the formation of a swirl of the mixed fluid stream just before entering the main stream 6 supported.

Im Gegensatz hierzu erfolgt bei 2 keine Zuführung eines weiteren Fluids 4 in den Hauptmischraum 8. Außerdem befinden sich alle Prallplatten in Strömungsrichtung vor dem Schieber, was bei der Reinigung Vorteile bietet und es möglich macht, das Gehäuse des Vormischraumes 7 über den Schieber hinaus in den Hauptmischraum 8 zu verschieben.In contrast, at 2 no supply of another fluid 4 in the main mixing room 8th , In addition, all baffles are in the flow direction in front of the slide, which offers advantages in cleaning and makes it possible, the housing of the premixing chamber 7 beyond the slider into the main mixing room 8th to move.

Eine umfassende Verwirbelung und damit auch Vermischung ergibt sich bei der Ausführung gemäß 3, da dort im Vormischraum 7 und im Hauptmischraum 8 vor und nach dem Schieber Prallplatten an der Wandung befestigt sind.A comprehensive turbulence and thus mixing results in the execution according to 3 because there in the premix room 7 and in the main mixing room 8th before and after the slider baffles are attached to the wall.

Im Ergebnis kann der Einsatz von Chemikalien auf ein Minimum reduziert werden.As a result, the use of chemicals can be reduced to a minimum.

Claims (10)

Vorrichtung zur Einmischung von mehreren Fluiden (1, 2, 3), von denen zumindest ein Fluid (1, 2, 3) wenigstens teilweise von einer Chemikalie gebildet wird, in einen von einer Kanalwand (5) begrenzten Hauptstrom (6), wobei zumindest zwei Fluide (1, 2, 3) vor der Einmischung in den Hauptstrom (6) in einem Vormischraum (7) miteinander in Kontakt gebracht werden und ein Mischfluid bilden, dadurch gekennzeichnet, dass sich an den Vormischraum (7) ein Hauptmischraum (8) anschließt, welcher Prallflächen (9) zur Veränderung der Strömungsrichtung des Mischfluid-Stroms besitzt. Device for mixing in several fluids ( 1 . 2 . 3 ), of which at least one fluid ( 1 . 2 . 3 ) is at least partially formed by a chemical, into one of a channel wall ( 5 ) limited mainstream ( 6 ), wherein at least two fluids ( 1 . 2 . 3 ) before being mixed into the main stream ( 6 ) in a pre-mixing room ( 7 ) are brought into contact with each other and form a mixed fluid, characterized in that the pre-mixing space ( 7 ) a main mixing room ( 8th ) connects which baffles ( 9 ) has to change the flow direction of the mixed fluid flow. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Vormischraum (7) eine Mischvorrichtung, vorzugsweise einen statischen Mischer umfasst.Device according to claim 1, characterized in that the pre-mixing space ( 7 ) comprises a mixing device, preferably a static mixer. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Hauptmischraum (8) eine Mischvorrichtung, vorzugsweise einen statischen Mischer umfasst.Apparatus according to claim 1 or 2, characterized in that the main mixing chamber ( 8th ) comprises a mixing device, preferably a static mixer. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich am zum Hauptstrom (6) weisenden Ende des Hauptmischraumes (8) eine Absperrvorrichtung (10), insbesondere ein Schieber befindet.Device according to one of the preceding claims, characterized in that on to the main stream ( 6 ) pointing end of the main mixing chamber ( 8th ) a shut-off device ( 10 ), in particular a slider is located. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Prallflächen (9) von Prallplatten gebildet werden, die in den Mischfluid-Strom hineinragen.Device according to one of the preceding claims, characterized in that the baffles ( 9 ) are formed by baffles, which protrude into the mixing fluid flow. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Ausrichtung zumindest einer Prallfläche (9) veränderbar, insbesondere steuerbar ist.Device according to one of the preceding claims, characterized in that the alignment of at least one baffle surface ( 9 ) changeable, in particular controllable. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens ein weiteres Fluid (4) im Hauptmischraum (8) mit dem Mischfluid-Strom in Kontakt gebracht, insbesondere vermischt wird. Device according to one of the preceding claims, characterized in that at least one further fluid ( 4 ) in the main mixing room ( 8th ) is brought into contact with the mixed fluid stream, in particular mixed. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Mischfluid-Strom mit einem Winkel zwischen 10 und 170°, vorzugsweise zwischen 70 und 110° zur Strömungsrichtung des Hauptstroms (6) geneigt in diesen eingedüst wird.Device according to one of the preceding claims, characterized in that the mixed fluid flow at an angle between 10 and 170 °, preferably between 70 and 110 ° to the flow direction of the main stream ( 6 ) is injected into this inclined. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Hauptstrom (6) von einer Faserstoffsuspension zur Herstellung einer Papier-, Karton-, Tissue- oder einer anderen Faserstoffbahn gebildet wird.Device according to one of the preceding claims, characterized in that the main flow ( 6 ) is formed by a pulp suspension to produce a paper, board, tissue or other fibrous web. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Hauptstrom (6) von Prozess-, Frischwasser o.ä gebildet wird.Device according to one of claims 1 to 8, characterized in that the main stream ( 6 ) is formed by process, fresh water or the like.
DE102011075558A 2011-05-10 2011-05-10 Device useful for mixing several fluids, of which one fluid is partially formed from a chemical, in main stream bounded by channel wall, comprises main mixing chamber, which is connected to premix chamber, comprising baffle surfaces Withdrawn DE102011075558A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2883601A1 (en) * 2013-12-16 2015-06-17 China Petrochemical Development Corporation, Taipei (Taiwan) Fluid mixing device
WO2017098083A1 (en) * 2015-12-09 2017-06-15 Outotec (Finland) Oy Mixing apparatus and arrangement for introducing a first liquid, a second liquid, and a third liquid into a process liquid flow which is flowing in a linear flow duct section
CN110237734A (en) * 2019-06-10 2019-09-17 中国石油大学(北京) Gas mixer and emission-control equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2883601A1 (en) * 2013-12-16 2015-06-17 China Petrochemical Development Corporation, Taipei (Taiwan) Fluid mixing device
WO2017098083A1 (en) * 2015-12-09 2017-06-15 Outotec (Finland) Oy Mixing apparatus and arrangement for introducing a first liquid, a second liquid, and a third liquid into a process liquid flow which is flowing in a linear flow duct section
US10155206B1 (en) 2015-12-09 2018-12-18 Outotec (Finland) Oy Mixing apparatus and arrangement for introducing a first liquid, a second liquid, and a third liquid into a process liquid flow which is flowing in a linear flow duct section
AU2016365765B2 (en) * 2015-12-09 2020-01-02 Outotec (Finland) Oy Mixing apparatus and arrangement for introducing a first liquid, a second liquid, and a third liquid into a process liquid flow which is flowing in a linear flow duct section
EA034389B1 (en) * 2015-12-09 2020-02-03 Оутотек (Финлэнд) Ой Mixing apparatus and arrangement for introducing a first liquid, a second liquid, and a third liquid into a process liquid flow which is flowing in a linear flow duct section
CN110237734A (en) * 2019-06-10 2019-09-17 中国石油大学(北京) Gas mixer and emission-control equipment

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