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EP0655275B1 - Static mixing device - Google Patents

Static mixing device Download PDF

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Publication number
EP0655275B1
EP0655275B1 EP93810829A EP93810829A EP0655275B1 EP 0655275 B1 EP0655275 B1 EP 0655275B1 EP 93810829 A EP93810829 A EP 93810829A EP 93810829 A EP93810829 A EP 93810829A EP 0655275 B1 EP0655275 B1 EP 0655275B1
Authority
EP
European Patent Office
Prior art keywords
mixing
mixing device
sections
bars
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93810829A
Other languages
German (de)
French (fr)
Other versions
EP0655275A1 (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
Original Assignee
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
    • 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
    • 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 invention relates to a static mixing device according to the preamble of claim 1.
  • a static mixing device is from US-A-4577258 known.
  • the object of the present invention was to one over US-A-4577258 to create more stable mixing device. This task is characterized by the Features of claim 1 solved.
  • Claims 2 to 5 relate to various 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 6).
  • the two sections are included Advantage welded together (claim 7).
  • Claim 8 relates to an advantageous mixing device more than one mixing element.
  • the mixing element 3 of Figure 1 is made up of the strip-like, essentially zigzag or undulating sections 1 and 2 together.
  • the section 1 comprises the mixing-effective webs 12, with between two of these webs 12 each have an opening 13.
  • At the Section 2 have the corresponding webs and openings the reference numerals 22 and 23.
  • the two sections 1 and 2 are connected to one another at the crossbars 11 and 21, for example by spot welding.
  • To the The webs 12 and 22 have outer extreme points Connectors 14 and 24 respectively.
  • Sections 1 and 2 can by punching from metal or plastic plates - and subsequent forming - are produced.
  • the Parts can also be injection molded.
  • Fig.2 shows how the mixing element 3 of Fig.1 in one tubular housing 4 is arranged. With arrow 5 is the main flow direction is given.
  • Section 1 is in the form of a rigid chain
  • the Chain links each have two parallel mixing bridges 12, lies in the second embodiment in 3 shows a corresponding chain, each with three webs 12 and two openings 13 before.
  • the third Embodiment, Figure 4 have the chain links only one mix-effective bridge.
  • Fig.5 represents a fourth embodiment Detail, in which the openings 13a and 13b (or 23a and 23b) by partially cutting out as well Bending of material are formed, the bent material 15a and 15b (or 25a and 25b) itself has the function of mixing-effective webs.
  • a mixing device comprises more than one Mixing element 3. It is advantageously provided that the adjacent mixing elements with respect to the Main flow direction at an angle of preferably -90 ° are pivoted against each other.

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

Description

Die Erfindung betrifft eine statische Mischvorrichtung gemäss Oberbegriff von Anspruch 1. Eine solche Vorrichtung ist aus der Patentschrift US-A-4577258 bekannt.The invention relates to a static mixing device according to the preamble of claim 1. Such a device is from US-A-4577258 known.

Aufgabe der vor liegenden Erfindung war es, eine gegenüber der US-A-4577258 stabilere Mischvorrichtung zu schaffen. Diese Aufgabe wird durch die kennzeichnanden Merkmale des Anspruchs 1 gelöst. The object of the present invention was to one over US-A-4577258 to create more stable mixing device. This task is characterized by the Features of claim 1 solved.

Die Ansprüche 2 bis 5 betreffen verschiedene Ausführungsformen der erfindungsgemässen Mischvorrichtung. Das Material, aus dem die Mischelemente gefertigt werden, ist vorzugsweise eine metallische Legierung oder ein Kunststoff (Anspruch 6). Die beiden Teilstücke werden mit Vorteil zusammengeschweisst (Anspruch 7). Anspruch 8 bezieht sich auf eine vorteilhafte Mischvorrichtung mit mehr als einem Mischelement.Claims 2 to 5 relate to various 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 6). The two sections are included Advantage welded together (claim 7). Claim 8 relates to an advantageous mixing device 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 und
Fig. 5
eine vierte Ausführungsform,
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 and
Fig. 5
a fourth embodiment,

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 Figure 1 is made up of the strip-like, essentially zigzag or undulating sections 1 and 2 together. The section 1 comprises the mixing-effective webs 12, with between two of these webs 12 each have an opening 13. At the Section 2 have the corresponding webs and openings the reference numerals 22 and 23. The two sections 1 and 2 are connected to one another at the crossbars 11 and 21, for example by spot welding. To the The webs 12 and 22 have outer extreme points Connectors 14 and 24 respectively. Sections 1 and 2 can by punching from metal or plastic plates - and subsequent forming - are produced. The Parts 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.Fig.2 shows how the mixing element 3 of Fig.1 in one tubular housing 4 is arranged. With arrow 5 is the main flow direction is given.

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 embodiment in Fig.1 Section 1 is in the form of a rigid chain, the Chain links each have two parallel mixing bridges 12, lies in the second embodiment in 3 shows a corresponding chain, each with three webs 12 and two openings 13 before. The third Embodiment, Figure 4, have the chain links only one mix-effective bridge.

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. Fig.5 represents a fourth embodiment Detail, in which the openings 13a and 13b (or 23a and 23b) by partially cutting out as well Bending of material are formed, the bent material 15a and 15b (or 25a and 25b) itself has the function of mixing-effective webs.

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.Generally, a mixing device comprises more than one Mixing element 3. It is advantageously provided that the adjacent mixing elements with respect to the Main flow direction at an angle of preferably -90 ° are pivoted against each other.

Ausser für Mischvorgänge kann bekanntlich eine Mischvorrichtung wie die hier beschriebene Mischvorrichtung auch bei Wärme- und Stoffaustauschvorgängen eingesetzt werden.As is known, one can be used for mixing processes Mixing device like the one described here Mixing device even with heat and Mass transfer processes are used.

Claims (8)

  1. A static mixing device for a flowing medium, comprising a tubular housing (4) and at least one mixing element (3) disposed in the housing, the structural elements of which are substantially plane bars (11, 12, 21, 22), wherein the housing defines a main direction of flow (5) of the medium and the bars (12, 22), which exert the mixing action, enclose an angle with the main direction of flow, the mixing element is formed of at least two strip-like, substantially zigzag or wavy sections (1, 2) and the arrangement of the one section can be transported into the arrangement of the other section by a 180° rotation around the housing axis,
    characterized in that the sections are disposed one above the another and comprise bar-like regions which lie transversally to the bars (11, 21) having a mixing action and which are connected, face to face, to one another at the contact points of the two sections.
  2. A mixing device according to Claim 1,
    characterized in that the sections (12) comprise openings (13, 23) which each form at least one space between two adjacent, parallel bars (12, 22).
  3. A mixing device according to Claim 2,
    characterised in that the openings (13, 23) are produced by the removal of material.
  4. A mixing device according to Claim 2,
    characterized in that the openings (13, 23) are formed by partial blanking or bending out of material, the bent-out material itself having the function of bars (15a, 15b) having a mixing action.
  5. A mixing device according to one of Claims 1 to 4,
    characterized in that the section (1) is provided in the form of a rigid chain, the chain links each being formed by a bar (12) having a mixing action or by groups comprising two or more parallel bars (12) having a mixing action.
  6. A mixing device according to one of Claims 1 to 5,
    characterized in that the sections (12) are produced by stamping from metal or plastic plates or by injection moulding.
  7. A mixing device according to one of Claims 1 to 6,
    characterized in that the two sections (12) of the mixing element (3) are connected to one another by welding, especially spot welding.
  8. A mixing device according to one of Claims 1 to 7,
    characterized in that at least two mixing elements (3) are disposed one behind the other in the housing, the adjacent mixing elements being mutually swivelled by an angle of preferably 90° in relation to the main direction of flow.
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 EP0655275A1 (en) 1995-05-31
EP0655275B1 true EP0655275B1 (en) 1999-10-06

Family

ID=8215076

Family Applications (1)

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

Country Status (6)

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

Cited By (7)

* Cited by examiner, † Cited by third party
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WO2011000685A1 (en) 2009-07-01 2011-01-06 Sulzer Chemtech Ag Device for cleaning exhaust gases containing nox
EP4059979A1 (en) 2021-03-18 2022-09-21 Sulzer Management AG A process of continuously manufacturing a poly(hydroxy acid) homo- or copolymer with tunable molecular weight, structure and composition
EP4445979A1 (en) 2023-04-11 2024-10-16 Sulzer Management AG A multi-stage devolatilization apparatus comprising at least one static mixer
EP4445978A1 (en) 2023-04-11 2024-10-16 Sulzer Management AG A devolatilization apparatus comprising distributors comprising a static mixer
EP4445980A1 (en) 2023-04-11 2024-10-16 Sulzer Management AG A devolatilization apparatus comprising a perforated roof element
EP4470999A1 (en) 2023-06-01 2024-12-04 Sulzer Management AG A process and plant for recycling polystyrene waste containing at least one organic halogen containing flame retardant
EP4491365A1 (en) 2023-07-13 2025-01-15 Sulzer Management AG Method and device for the continuous production of graded polymer foams

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011000685A1 (en) 2009-07-01 2011-01-06 Sulzer Chemtech Ag Device for cleaning exhaust gases containing nox
EP4059979A1 (en) 2021-03-18 2022-09-21 Sulzer Management AG A process of continuously manufacturing a poly(hydroxy acid) homo- or copolymer with tunable molecular weight, structure and composition
WO2022195019A1 (en) 2021-03-18 2022-09-22 Sulzer Management Ag A process of continuously manufacturing a poly(hydroxy acid) copolymer with tunable molecular weight, structure and composition
EP4445979A1 (en) 2023-04-11 2024-10-16 Sulzer Management AG A multi-stage devolatilization apparatus comprising at least one static mixer
EP4445978A1 (en) 2023-04-11 2024-10-16 Sulzer Management AG A devolatilization apparatus comprising distributors comprising a static mixer
EP4445980A1 (en) 2023-04-11 2024-10-16 Sulzer Management AG A devolatilization apparatus comprising a perforated roof element
WO2024213449A1 (en) 2023-04-11 2024-10-17 Sulzer Management Ag A devolatilization apparatus comprising distributors comprising a static mixer
WO2024213470A1 (en) 2023-04-11 2024-10-17 Sulzer Management Ag A devolatilization apparatus comprising a perforated roof element
WO2024213471A1 (en) 2023-04-11 2024-10-17 Sulzer Management Ag A multi-stage devolatilization apparatus comprising at least one static mixer
EP4470999A1 (en) 2023-06-01 2024-12-04 Sulzer Management AG A process and plant for recycling polystyrene waste containing at least one organic halogen containing flame retardant
WO2024245996A1 (en) 2023-06-01 2024-12-05 Sulzer Management Ag A process and plant for recycling polystyrene waste containing at least one organic halogen containing flame retardant
EP4491365A1 (en) 2023-07-13 2025-01-15 Sulzer Management AG Method and device for the continuous production of graded polymer foams
WO2025012173A1 (en) 2023-07-13 2025-01-16 Sulzer Management Ag A method and device for the continuous production of graded polymer foams

Also Published As

Publication number Publication date
KR100359196B1 (en) 2003-01-10
JPH07185283A (en) 1995-07-25
DE59309826D1 (en) 1999-11-11
KR950013572A (en) 1995-06-15
EP0655275A1 (en) 1995-05-31
US5492408A (en) 1996-02-20
JP3607733B2 (en) 2005-01-05
TW252929B (en) 1995-08-01

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