EP0655275A1 - Static mixing device - Google Patents

Static mixing device Download PDF

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Publication number
EP0655275A1
EP0655275A1 EP93810829A EP93810829A EP0655275A1 EP 0655275 A1 EP0655275 A1 EP 0655275A1 EP 93810829 A EP93810829 A EP 93810829A EP 93810829 A EP93810829 A EP 93810829A EP 0655275 A1 EP0655275 A1 EP 0655275A1
Authority
EP
European Patent Office
Prior art keywords
mixing
mixing device
sections
webs
flow direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93810829A
Other languages
German (de)
French (fr)
Other versions
EP0655275B1 (en
Inventor
Georges Alfaré
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sulzer Chemtech AG
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Sulzer Chemtech AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sulzer Chemtech AG filed Critical Sulzer Chemtech AG
Priority to DE59309826T priority Critical patent/DE59309826D1/en
Priority to EP93810829A priority patent/EP0655275B1/en
Priority to US08/336,613 priority patent/US5492408A/en
Priority to TW083110613A priority patent/TW252929B/zh
Priority to JP28672294A priority patent/JP3607733B2/en
Priority to KR10-1994-0030678A priority patent/KR100359196B1/en
Publication of EP0655275A1 publication Critical patent/EP0655275A1/en
Application granted granted Critical
Publication of EP0655275B1 publication Critical patent/EP0655275B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • 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
    • B01F25/4315—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material
    • B01F25/43151—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being deformed flat pieces of material composed of consecutive sections of deformed flat pieces of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/432—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
    • B01F25/4322—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 essentially composed of stacks of sheets, e.g. corrugated sheets

Definitions

  • the mixing element is preferably essentially rotationally symmetrical with respect to a 180 ° rotation about the main flow direction.
  • the two strip-like sections are mirror-symmetrical to one another, specifically with respect to the plane at which the sections are assembled.
  • a mixing element can also be composed of more than two strip-like sections. 6 shows an example with four sections 1, 2, 1 'and 2'.
  • a mixing device comprises more than one mixing element 3. It is advantageously provided that the adjacent mixing elements are pivoted relative to one another with respect to the main flow direction by an angle of preferably 90 °.

Abstract

The static mixing device for a flowing medium includes a tubular shell (4) and at least one mixing element (3) arranged in the shell, the structural elements of which mixing element are essentially bridges (11, 12, 21, 22). The shell defines a main flow direction (5) of the medium and the bridges (12, 22) which carry out the mixing action are each at an angle to the main flow direction. To simplify manufacture, the mixing element is composed according to the invention from at least two strip-like, essentially zigzag-shaped or wave-shaped parts (1, 2). Preferably, the mixing element is essentially constructed to be rotationally symmetric with respect to a 180 DEG rotation about the main direction of flow. <IMAGE>

Description

Die Erfindung betrifft eine statische Mischvorrichtung gemäss Oberbegriff von Anspruch 1. Eine solche Vorrichtung ist aus den Patentschriften CH 642 564 (= P.5473) oder DE 28 08 854 (= P.5285) bekannt. Das Mischelement dieser Vorrichtung weist eine Struktur auf, die sich aus ineinandergreifenden, sich kreuzenden Stegen aufbaut, wobei die Stege zwei Gruppen von parallel ausgerichteten Strukturelementen bilden.The invention relates to a static mixing device according to the preamble of claim 1. Such a device is known from the patents CH 642 564 (= P.5473) or DE 28 08 854 (= P.5285). The mixing element of this device has a structure which is composed of interlocking, intersecting webs, the webs forming two groups of structural elements aligned in parallel.

Die Herstellung der bekannten Mischelemente ist relativ aufwendig; denn die Mischelemente werden aus einzelnen Stegen zusammengefügt, wobei das Zusammenfügen beispielsweise durch Schweissen erfolgt. Es ist Aufgabe der Erfindung, eine Mischvorrichtung zu schaffen, für die ein kostengünstigeres Herstellverfahren möglich ist. Diese Aufgabe wird durch eine Vorrichtung gelöst, dessen Mischelement das kennzeichnende Merkmal des Anspruchs 1 aufweist.The production of the known mixing elements is relatively complex; because the mixing elements are assembled from individual webs, the joining being carried out, for example, by welding. It is an object of the invention to provide a mixing device for which a less expensive manufacturing process is possible. This object is achieved by a device, the mixing element of which has the characterizing feature of claim 1.

Für die erfindungsgemässe Vorrichtung ist das Mischelement vorzugsweise bezüglich einer 180°-Drehung um die Hauptfliessrichtung im wesentlichen rotationssymmetrisch ausgebildet. In der vorliegenden Beschreibung werden nur Ausführungsbeispiele gezeigt, welche diese Rotationssymmetrie aufweisen. Es ist aber beispielsweise auch denkbar, dass die beiden streifenartigen Teilstücke zueinander spiegelsymmetrisch sind, und zwar bezüglich der Ebene, an der die Teilstücke zusammengesetzt sind.For the device according to the invention, the mixing element is preferably essentially rotationally symmetrical with respect to a 180 ° rotation about the main flow direction. In the present description, only exemplary embodiments are shown which have this rotational symmetry. But it is for example it is also conceivable that the two strip-like sections are mirror-symmetrical to one another, specifically with respect to the plane at which the sections are assembled.

Die Ansprüche 2 bis 6 betreffen verschiedene Ausführungsformen der erfindungsgemässen Mischvorrichtung. Das Material, aus dem die Mischelemente gefertigt werden, ist vorzugsweise eine metallische Legierung oder ein Kunststoff (Anspruch 7). Die beiden Teilstücke werden mit Vorteil zusammengeschweisst (Anspruch 8). Anspruch 9 bezieht sich auf eine vorteilhafte Mischvorrichtung mit mehr als einem Mischelement.Claims 2 to 6 relate to different embodiments of the mixing device according to the invention. The material from which the mixing elements are made is preferably a metallic alloy or a plastic (claim 7). The two sections are advantageously welded together (claim 8). Claim 9 relates to an advantageous mixing device with more than one mixing element.

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

Fig. 1
ausschnittsweise eine perspektivische Darstellung eines Mischelements zur erfindungsgemässen Mischvorrichtung,
Fig. 2
Längsschnitt durch eine Mischvorrichtung mit dem Mischelement der Fig.1,
Fig. 3
Draufsicht auf ein Teilsstück einer zweiten Ausführungsform des erfindungsgemässen Mischelements,
Fig. 4
eine dritte Ausführungsform
Fig. 5
eine vierte Ausführungsform und
Fig. 6
Längsschnitt durch ein Mischelement mit vier Teilstücken.
The invention is explained in more detail below with reference to the drawings. Show it:
Fig. 1
a perspective view of a mixing element for the mixing device according to the invention,
Fig. 2
Longitudinal section through a mixing device with the mixing element of Figure 1,
Fig. 3
Top view of a section of a second embodiment of the mixing element according to the invention,
Fig. 4
a third embodiment
Fig. 5
a fourth embodiment and
Fig. 6
Longitudinal section through a mixing element with four sections.

Das Mischelement 3 der Fig.1 setzt sich aus den streifenartigen, im wesentlichen zickzack- oder wellenförmigen Teilstücken 1 und 2 zusammen. Das Teilstück 1 umfasst die mischwirksamen Stege 12, wobei zwischen jeweils zwei dieser Stege 12 ein Durchbruch 13 liegt. Beim Teilstück 2 haben die entsprechenden Stege und Durchbrüche die Bezugszeichen 22 bzw. 23. Die beiden Teilstücke 1 und 2 sind an den Querstegen 11 und 21 miteinander verbunden, beispielsweise durch eine Punktschweissung. An den äusseren Extremstellen weisen die Stege 12 und 22 Verbindungsstücke 14 bzw. 24 auf. Die Teilstücke 1 und 2 können durch Stanzen aus Metall- oder Kunststoffplatten - und anschliessendem Umformen - hergestellt werden. Die Teilstücke können auch spritzgegossen werden.The mixing element 3 of FIG. 1 is composed of the strip-like, essentially zigzag or wavy sections 1 and 2. The section 1 comprises the mixing-effective webs 12, an opening 13 being located between two of these webs 12 in each case. In section 2, the corresponding webs and openings have the reference numerals 22 and 23, respectively. The two sections 1 and 2 are connected to one another at the cross webs 11 and 21, for example by spot welding. The webs 12 and 22 have connecting pieces 14 and 24 at the outer extreme points. The sections 1 and 2 can be produced by stamping from metal or plastic plates - and then reshaping. The sections can also be injection molded.

Fig.2 zeigt, wie das Mischelement 3 der Fig.1 in einem rohrförmigen Gehäuse 4 angeordnet ist. Mit dem Pfeil 5 ist die Hauptfliessrichtung angegeben.2 shows how the mixing element 3 of FIG. 1 is arranged in a tubular housing 4. The main flow direction is indicated by arrow 5.

Während beim ersten Ausführungsbeispiel in Fig.1 das Teilstück 1 in Form einer starren Kette vorliegt, dessen Kettenglieder jeweils zwei parallele mischwirksame Stege 12 umfassen, liegt beim zweiten Ausführungsbeispiel in Fig.3 eine entsprechende Kette mit jeweils drei Stegen 12 und zwei Durchbrüchen 13 vor. Beim dritten Ausführungsbeispiel, Fig.4, weisen die Kettenglieder jeweils nur einen mischwirksamen Steg auf.While in the first exemplary embodiment in FIG. 1 the section 1 is in the form of a rigid chain, the chain links of which each comprise two parallel mixing-effective webs 12, in the second exemplary embodiment in FIG. 3 there is a corresponding chain with three webs 12 and two openings 13 each. In the third exemplary embodiment, FIG. 4, the chain links each have only one mixing web.

Fig.5 stellt ein viertes Ausführungsbeispiel ausschnittsweise dar, bei dem die Durchbrüche 13a und 13b (bzw. 23a und 23b) durch teilweises Ausschneiden sowie Ausbiegen von Material gebildet sind, wobei das ausgebogene Material 15a und 15b (bzw. 25a und 25b) selbst die Funktion von mischwirksamen Stegen hat.5 shows a fourth exemplary embodiment in sections, in which the openings 13a and 13b (or 23a and 23b) are formed by partially cutting out and bending out material, the bent material 15a and 15b (or 25a and 25b) itself Function of mix-effective webs.

Ein Mischelement kann auch aus mehr als zwei streifenartigen Teilstücken zusammengesetzt sein. Fig.6 zeigt ein Beispiel mit vier Teilstücken 1, 2, 1' und 2'.A mixing element can also be composed of more than two strip-like sections. 6 shows an example with four sections 1, 2, 1 'and 2'.

Im allgemeinen umfasst eine Mischvorrichtung mehr als ein Mischelement 3. Dabei wird mit Vorteil vorgesehen, dass die aneinander grenzenden Mischelemente bezüglich der Hauptfliessrichtung um einen Winkel von vorzugsweise 90° gegeneinander verschwenkt sind.In general, a mixing device comprises more than one mixing element 3. It is advantageously provided that the adjacent mixing elements are pivoted relative to one another with respect to the main flow direction by an angle of preferably 90 °.

Ausser für Mischvorgänge kann bekanntlich eine Mischvorrichtung wie die hier beschriebene Mischvorrichtung auch bei Wärme- und Stoffaustauschvorgängen eingesetzt werden.In addition to mixing processes, it is known that a mixing device such as the mixing device described here can also be used in heat and mass transfer processes.

Claims (9)

Statische Mischvorrichtung für ein fliessendes Medium, umfassend ein rohrartiges Gehäuse (4) und mindestens ein im Gehäuse angeordnetes Mischelement (3), dessen Strukturelemente im wesentlichen Stege (11, 12, 21, 22) sind, wobei das Gehäuse eine Hauptfliessrichtung (5) des Mediums definiert und die Stege (12, 22), welche die Mischwirkung ausüben, jeweils mit der Hauptfliessrichtung einen Winkel einschliessen,
   dadurch gekennzeichnet, dass das Mischelement aus mindestens zwei streifenartigen, im wesentlichen zickzack- oder wellenförmigen Teilstücken (1, 2) zusammengesetzt ist und das Mischelement vorzugsweise bezüglich einer 180°-Drehung um die Hauptfliessrichtung im wesentlichen rotationssymmetrisch ausgebildet ist.Static mixing device for a flowing medium, comprising a tubular housing (4) and at least one mixing element (3) arranged in the housing, the structural elements of which are essentially webs (11, 12, 21, 22), the housing being a main flow direction (5) of the Medium is defined and the webs (12, 22), which exert the mixing action, each form an angle with the main flow direction,
characterized in that the mixing element is composed of at least two strip-like, substantially zigzag or wave-shaped sections (1, 2) and the mixing element is preferably essentially rotationally symmetrical with respect to a 180 ° rotation about the main flow direction. Mischvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Teilstücke stegartige Bereiche aufweisen, die quer zur Hauptfliessrichtung liegen und an denen die beiden Teilstücke miteinander verbunden sind.Mixing device according to claim 1, characterized in that the sections have web-like areas which lie transversely to the main flow direction and on which the two sections are connected to one another. Mischvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Teilstücke Durchbrüche aufweisen, die jeweils mindestens einen Zwischenraum zwischen zwei benachbarten, parallelen Stegen bilden.Mixing device according to claim 1 or 2, characterized in that the sections have openings which each form at least one space between two adjacent, parallel webs. Mischvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Durchbrüche durch Entfernen von Material hergestellt sind.Mixing device according to claim 3, characterized in that the openings are made by removing material. Mischvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Durchbrüche durch teilweises Ausschneiden sowie Ausbiegen von Material gebildet sind, wobei das ausgebogene Material selbst die Funktion von mischwirksamen Stegen hat.Mixing device according to claim 3, characterized in that the openings are formed by partially cutting and bending material, the bent material itself having the function of mixing-effective webs. Mischvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Teilstück in Form einer starren Kette vorliegt, wobei die Kettenglieder jeweils von einem mischwirksamen Steg oder von Gruppen, die zwei oder mehr parallele mischwirksame Stege umfassen, gebildet sind.Mixing device according to one of claims 1 to 5, characterized in that the section is in the form of a rigid chain, the chain links being formed in each case by a mixing web or by groups which comprise two or more parallel mixing webs. Mischvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Teilstücke durch Stanzen aus Metall- oder Kunststoffplatten oder durch Spritzgiessen hergestellt sind.Mixing device according to one of claims 1 to 6, characterized in that the sections are made by punching from metal or plastic plates or by injection molding. Mischvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die beiden Teilstücke des Mischelements durch Schweissen, insbesondere Punktschweissen, miteinander verbunden sind.Mixing device according to one of claims 1 to 7, characterized in that the two sections of the mixing element are connected to one another by welding, in particular spot welding. Mischvorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass mindestens zwei Mischelemente im Gehäuse hintereinander angeordnet sind, wobei die aneinander grenzenden Mischelemente bezüglich der Hauptfliessrichtung um einen Winkel von vorzugsweise 90° gegeneinander verschwenkt sind.Mixing device according to one of claims 1 to 8, characterized in that at least two mixing elements are arranged one behind the other in the housing, the adjacent mixing elements being pivoted relative to one another with respect to the main flow direction by an angle of preferably 90 °.
EP93810829A 1993-11-26 1993-11-26 Static mixing device Expired - Lifetime EP0655275B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE59309826T DE59309826D1 (en) 1993-11-26 1993-11-26 Static mixing device
EP93810829A EP0655275B1 (en) 1993-11-26 1993-11-26 Static mixing device
US08/336,613 US5492408A (en) 1993-11-26 1994-11-09 Static mixing apparatus
TW083110613A TW252929B (en) 1993-11-26 1994-11-14
JP28672294A JP3607733B2 (en) 1993-11-26 1994-11-21 Static stirring device
KR10-1994-0030678A KR100359196B1 (en) 1993-11-26 1994-11-22 A static mixing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93810829A EP0655275B1 (en) 1993-11-26 1993-11-26 Static mixing device

Publications (2)

Publication Number Publication Date
EP0655275A1 true EP0655275A1 (en) 1995-05-31
EP0655275B1 EP0655275B1 (en) 1999-10-06

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US (1) US5492408A (en)
EP (1) EP0655275B1 (en)
JP (1) JP3607733B2 (en)
KR (1) KR100359196B1 (en)
DE (1) DE59309826D1 (en)
TW (1) TW252929B (en)

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EP0070916A1 (en) * 1981-07-30 1983-02-09 GebràœDer Sulzer Aktiengesellschaft Installation element for an apparatus with a jacket tube for mass transfer, direct heat exchange and mixing
EP0072875A1 (en) * 1981-07-30 1983-03-02 GebràœDer Sulzer Aktiengesellschaft Installation element for an apparatus for mass transfer, direct heat exchange and mixing
US4511258A (en) * 1983-03-25 1985-04-16 Koflo Corporation Static material mixing apparatus
US4710326A (en) * 1986-08-29 1987-12-01 Seah Alexander M Corrugated packing and methods of use
WO1993004771A1 (en) * 1991-09-03 1993-03-18 Otto Tuchenhagen Gmbh & Co.Kg. Static mixer

Cited By (14)

* Cited by examiner, † Cited by third party
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WO2000078440A1 (en) * 1999-06-21 2000-12-28 Koch-Glitsch, Inc. Stacked static mixing elements
US6394644B1 (en) 1999-06-21 2002-05-28 Koch-Glitsch, Inc. Stacked static mixing elements
DE10155045C2 (en) * 2000-11-17 2003-10-30 Sulzer Chemtech Ag Winterthur Component to a static mixer
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
DE10158651B4 (en) * 2001-11-30 2016-02-04 Ritter Gmbh Static mixing element
EP1837070A1 (en) * 2006-03-24 2007-09-26 StaMixCo Technology AG Static mixer, and method of manufacturing the same
WO2013026782A3 (en) * 2011-08-24 2013-05-10 Friedrich Boysen Gmbh & Co. Kg Mixer device
US9835068B2 (en) 2011-08-24 2017-12-05 Friedrich Boysen Gmbh & Co. Kg Mixer device
WO2013066709A1 (en) * 2011-10-31 2013-05-10 Nordson Corporation Reconfigurable mixing baffle for static mixer and method for making a static mixer
JP2014532556A (en) * 2011-10-31 2014-12-08 ノードソン コーポレーションＮｏｒｄｓｏｎ Ｃｏｒｐｏｒａｔｉｏｎ Reconfigurable mixing baffle for static mixer and method for making static mixer
US9242214B2 (en) 2011-10-31 2016-01-26 Nordson Corporation Reconfigurable mixing baffle for static mixer and method for making a static mixer
US9981232B2 (en) 2011-10-31 2018-05-29 Nordson Corporation Reconfigurable mixing baffle for static mixer and method for making a static mixer
US11446616B2 (en) 2011-10-31 2022-09-20 Nordson Corporation Reconfigurable mixing baffle for static mixer and method for making a static mixer
DE102012003161A1 (en) 2012-02-17 2012-09-20 Daimler Ag Mixing device for fluid medium, particularly adhesive, has tubular base body, where multiple mixing elements are arranged in inner chamber flowing through fluid medium space of base body

Also Published As

Publication number Publication date
EP0655275B1 (en) 1999-10-06
KR950013572A (en) 1995-06-15
JPH07185283A (en) 1995-07-25
TW252929B (en) 1995-08-01
JP3607733B2 (en) 2005-01-05
DE59309826D1 (en) 1999-11-11
KR100359196B1 (en) 2003-01-10
US5492408A (en) 1996-02-20

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