EP2286904B1 - Dispositif de mélange statique pour matières pouvant s'écouler - Google Patents

Dispositif de mélange statique pour matières pouvant s'écouler Download PDF

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Publication number
EP2286904B1
EP2286904B1 EP09405136A EP09405136A EP2286904B1 EP 2286904 B1 EP2286904 B1 EP 2286904B1 EP 09405136 A EP09405136 A EP 09405136A EP 09405136 A EP09405136 A EP 09405136A EP 2286904 B1 EP2286904 B1 EP 2286904B1
Authority
EP
European Patent Office
Prior art keywords
webs
mixing device
static mixing
mixing
flow duct
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.)
Active
Application number
EP09405136A
Other languages
German (de)
English (en)
Other versions
EP2286904A1 (fr
Inventor
Alain Georg
Günther Schwald
Daniel Altenburger
Tobias Vögeli
Silvano Andreoli
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.)
FLUITEC INVEST AG
Original Assignee
FLUITEC INVEST 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 FLUITEC INVEST AG filed Critical FLUITEC INVEST AG
Priority to AT09405136T priority Critical patent/ATE553839T1/de
Priority to EP09405136A priority patent/EP2286904B1/fr
Priority to US12/855,295 priority patent/US8807826B2/en
Publication of EP2286904A1 publication Critical patent/EP2286904A1/fr
Application granted granted Critical
Publication of EP2286904B1 publication Critical patent/EP2286904B1/fr
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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
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/47—Mixing liquids with liquids; Emulsifying involving high-viscosity liquids, e.g. asphalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4316—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod
    • B01F25/43161—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod composed of consecutive sections of 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
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/2805—Mixing plastics, polymer material ingredients, monomers or oligomers
    • 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
    • B01F2215/0418—Geometrical information
    • B01F2215/0431—Numerical size values, e.g. diameter of a hole or conduit, area, volume, length, width, or ratios thereof

Definitions

  • the present invention relates to a static mixing device, comprising a tubular, a longitudinal axis and an inner diameter flow channel having at least one arranged in the flow channel mixing element of a length and a diameter corresponding to the inner diameter of the flow channel, each mixing element arranged a plurality of crosswise, with the longitudinal axis of the Flow channel having an angle greater 0 ° including webs, wherein the webs are arranged in two intersecting, a plurality of mutually parallel, spaced from each other by an equal distance planes levels and when projecting the two levels of crowd on a perpendicular to the longitudinal axis of the flow channel lying projection plane adjacent webs have an intermediate distance.
  • helical mixer static mixer has helically curved, sheet-like, alternately left and right-hand plates or mixing elements, which lined up with intersecting end edges divide the flow of substances to be mixed as they enter each element.
  • the flow channel is the same in shape and cross section in each of the elements.
  • the spiral mixer is used in particular for mixing in the turbulent range. In the laminar field, the spiral mixer is only partially usable because of its moderate mixing performance.
  • a special family of static mixers are the so-called X-mixers. These consist of intersecting webs or plates.
  • X-mixer On off AT 330 135 B
  • Known X-mixer has in a tube at least one mixing insert in the form of a webs and slots having plate pair. In each case, the webs of a plate extend through the slots of the other plate crossing therethrough.
  • the plates are arranged inclined to one another and to the axis of the tube.
  • the supplied stream of substances to be mixed is split by the webs as a result of the inclination of the plates in terms of time and place offset into partial streams.
  • the web approaches form strong dead zones, which increase the residence time unnecessarily and can damage critical fluids.
  • the plates must be positioned with countless welds, which can lead to increased corrosion.
  • the assembly of the plates is very time consuming and therefore costly.
  • This known device is used in particular for mixing in the laminar range. In the turbulent range, it is only partially usable because of its high pressure loss.
  • CSE-X mixer The geometry known as CSE-X mixer is in CH 693 560 A5 described.
  • This patent shows a device for static mixing, consisting of a tubular housing with at least one mixing insert arranged therein in the form of a webs and slots having plate which is bent.
  • the plates Preferably, the plates have projections on the web edges and have elliptical peripheral shapes.
  • Two curved plates, each with the webs of one plate passing through the slits of the other plate, are attached to the protrusions.
  • the mixing inserts can be positioned one behind the other in the tubular housing, wherein the mixing inserts can touch directly or can also have spacings between the inserts.
  • the device can mix well with this simple geometry in all flow areas.
  • the mixing quality is determined only by the number of mixing inserts and their installation position.
  • the mixed use was known on the market especially as 4-, 6- and 8-bar construction and also has an increasing with increasing number of webs, high pressure loss.
  • EP 0 154 013 A1 shows a mixing device for plastic melt processing machines.
  • the mixing element has intersecting webs whose end pieces penetrate the openings of the pipe or a sleeve.
  • the webs have between the intersection points free spaces and reduce the pressure loss significantly.
  • the stable welded construction can be significantly distorted at greater temperature differences, which can lead to jamming of the sleeve in the pipe.
  • WO 2009/000642 A1 shows a mixing device of the type mentioned, in which wie in EP 0 154 013 A1 - The webs have clear spaces between the intersections.
  • the in WO 2009/000642 A1 in Fig. 3 illustrated 5-bar mixer has an L / D ratio of 1 on. With this geometry, the pressure loss is significantly reduced.
  • the construction is mechanically very weak and can hardly be expertly welded. Soldered versions are very time-consuming and as a rule barely gap-free.
  • Micro-chromosomes are understood as the targeted use of Static mixers of different geometries and nominal widths. Basically, first a uniform pre-distribution in the macro mixer must be achieved, then in the micro mixer the best possible fine distribution is achieved. The basics typically used are the CSE-X mixers.
  • CH 642 564 A5 The investigations in CH 642 564 A5 show that the number of web layers directly influences the layer formation and thus the mixing quality. The more web layers are used, the more layers are produced, which has a positive effect on the mixing quality. However, the pressure loss increases as the number of webs increases.
  • An ideal geometry according to CH 642 564 A5 six or eight webs and an L / D ratio of 0.75 to 1.5.
  • the invention has for its object to provide a static mixing device of the type mentioned with further improved mixing effect without substantial increase in pressure drop, which does not have the aforementioned disadvantages of prior art mixers.
  • the mixing device should preferably be able to be used in the laminar flow range and ensure a largely complete mixing.
  • the mixing elements should be simple and inexpensive to manufacture, have a significantly reduced pressure drop and mechanically stable can be assembled to mixer bars.
  • the mixing elements should be able to be positioned as short as possible as well as long designs in the flow channel.
  • the flow channel should have a round, rectangular, or square cross-section.
  • the webs are formed waisted between adjacent intersections and in the middle between adjacent intersections, the webs their smallest width and adjacent webs have their greatest distance, and the inner wall of the flow channel adjacent webs between the front edge edges one of Sidecut of the webs corresponding recess having the smallest width to form a largest in the middle between the front edge edges wall distance, wherein the measured over the diameter of the mixing element sum of the smallest widths of the webs is at least 35% of the diameter of the mixing element.
  • the static mixing device according to the present invention is particularly suitable for mixing media, at least one of which is a flowable, laminar flowing medium, in particular a polymer melt or another highly viscous fluid.
  • the size z is called pressure loss manifold and represents the ratio of the pressure loss for a static mixer in a round hollow body to the empty tube.
  • ⁇ stands for the dynamic viscosity
  • w for the flow rate
  • L for the length
  • D for the diameter.
  • the z-factor is a conventional laminar resistance factor in static mixing technology and is regularly used for the comparison of static mixers.
  • the mixing intensity allows the comparison of static mixers with a uniform diameter D.
  • the mixing intensity M used as Mischgütemass referred to in the present comparative experiments on the basis of 100% set intensity of the previously applicable as a mixer with the smallest mixing intensity spiral mixer, the disadvantage, however, a high L / D ratio of 25 and consequently a large Length required. This applies to two media to be mixed for a viscosity ratio of 1: 1.
  • tubular flow channel 10 having a longitudinal axis x and an inner diameter D has two adjoining, a length L having identical mixing elements 12 with a substantially the inner diameter D of the flow channel 10 corresponding Umhüllungs trimmesser.
  • the two mixing elements 12 are with respect to the longitudinal axis x of the flow channel 10 by a Angle of 90 ° rotated against each other.
  • the mixing element 12 consists of a plurality of intersecting webs 14A, 14B.
  • the webs 14A, 14B are arranged in mutually parallel planes separated from each other by an equal distance and forming two intersecting planes A, B.
  • the two level shares A, B close with the longitudinal axis x of the flow channel an angle ⁇ of 45 ° and with each other an angle of 90 °.
  • the mixing element 12 shown by way of example in the drawing has four web layers, each with two webs 14A, 14B which intersect alternately, and thus corresponds to a 4-web mixer.
  • All webs 14A, 14B extend within the mixing element 12 via their respective maximum length which is limited by the end faces of the mixing element 12 and by the inner wall of the flow channel 10, the contour of the webs 14A, 14B close to the wall being the circular cross-section of the wall Flow channel 10 is only partially adapted so that in the near-wall webs 14A, 14B - as in the other webs - only front end portions 22 adjoin the inner wall of the flow channel 10 with little play.
  • the adjoining the inner wall of the flow channel 10 webs 14A, 14B are provided on the directed against the inner wall side with a recess 24 which extends between the end-side end portions or butt edges 22 with the inner wall of the flow channel 10 and corresponding to the waist of the webs largest Wall distance c have, which in the present case is 50% of the greatest distance between a adjacent bars 14A, 14B.
  • the webs 14A, 14B have on each provided Junction 16 a notch 18 or the notch depth of the notch 18 corresponding, a projection 20 generating cutback on.
  • the assembly of the mixing element 12 is carried out in a simple manner of two in Fig. 3 shown web plates 26 with four arranged alternately, the four in Fig. 4 shown webs 14A, 14B corresponding half webs 14A ', 14B' and the four in Fig. 4 illustrated webs 14A, 14B.
  • two web plates 26 are bent about an axis s at an angle of 90 ° and in the in Fig. 1 shown connected by ends 28 of the two middle web halves 14A ', 14B' by welding together.
  • four webs 14A, 14B are placed over the notches 18 and projections 20 at the intersections 16 on the curved and welded together web plates 24 and partially welded at the intersection points 16.

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

Claims (11)

  1. Dispositif de mélange statique, avec un canal d'écoulement tubulaire (10) présentant un axe longitudinal (x) et un diamètre intérieur (D), comportant au moins un élément de mélange (12) disposé dans le canal d'écoulement (10), d'une longueur (L) et d'un diamètre correspondant au diamètre intérieur (D) du canal d'écoulement (10), dans lequel chaque élément de mélange (12) présente une pluralité de chicanes (14A, 14B) disposées en croix, formant avec l'axe longitudinal (x) du canal d'écoulement (10) un angle (α) supérieur à 0°, dans lequel les chicanes (14A, 14B) sont disposées dans deux faisceaux de plans (A, B) qui se croisent et qui présentent une pluralité de plans de séparation disposés parallèlement les uns aux autres et séparés l'un de l'autre par une distance égale et, en projection des deux faisceaux de plans (A, B) sur un plan de projection mené perpendiculairement à l'axe longitudinal (x) du canal d'écoulement (10), des chicanes proches l'une de l'autre (14A, 14B) présentent une distance intermédiaire, caractérisé en ce que les chicanes (14A, 14B) sont de forme cintrée entre des points de croisement voisins (16) et, au milieu entre des points de croisement voisins (16), les chicanes (14A, 14B) présentent leur plus petite largeur (b) et des chicanes (14A, 14B) voisines l'une de l'autre y présentent leur plus grande distance intermédiaire (a), et les chicanes (14A, 14B) voisines de la paroi intérieure du canal d'écoulement (10) présentent, entre des bords frontaux (22), un évidement correspondant au cintrage des chicanes (14A, 14B) avec la plus petite largeur (b) en formant une plus grande distance de la paroi (c) au milieu entre les bords frontaux (22), dans lequel la somme des plus petites largeurs (b) des chicanes (14A, 14B), mesurée sur le diamètre de l'élément de mélange (12), vaut au moins 35 % du diamètre de l'élément de mélange (12).
  2. Dispositif de mélange statique selon la revendication 1, caractérisé en ce que toutes les chicanes (14A, 14B) forment avec l'axe longitudinal (x) du canal d'écoulement (10) un angle (α) de 45°.
  3. Dispositif de mélange statique selon la revendication 1 ou 2, caractérisé en ce que toutes les chicanes (14A, 14B) présentent la même plus petite largeur (b).
  4. Dispositif de mélange statique selon l'une quelconque des revendications 1 à 3, caractérisé en ce que toutes les chicanes (14A, 14B) voisines l'une de l'autre présentent la même plus grande distance intermédiaire (a).
  5. Dispositif de mélange statique selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la plus petite largeur (b) des chicanes (14A, 14B) vaut 50 % de leur largeur (b') aux points de croisement (16) des chicanes (14A, 14B).
  6. Dispositif de mélange statique selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la plus petite largeur (b) des chicanes (14A, 14B) est de même valeur que la plus grande distance intermédiaire (a) de chicanes voisines (14A, 14B).
  7. Dispositif de mélange statique selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la plus grande distance de la paroi (c) vaut 50 % de la plus petite largeur (b) des chicanes (14A, 14B) et 50 % de la plus grande distance intermédiaire (a) de chicanes voisines (14A, 14B).
  8. Dispositif de mélange statique selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'élément de mélange (12) présente quatre couches de chicanes.
  9. Dispositif de mélange statique selon l'une quelconque des revendications 1 à 8, caractérisé en ce que des éléments de mélange (12) se succédant par rapport à l'axe longitudinal (x) du canal d'écoulement (10) sont disposés avec un décalage angulaire de 90° l'un par rapport à l'autre.
  10. Dispositif de mélange statique selon l'une quelconque des revendications 1 à 9, caractérisé en ce que des éléments de mélange successifs (12) sont espacés l'un de l'autre.
  11. Utilisation d'un dispositif de mélange statique selon l'une quelconque des revendications précédentes pour le mélange de milieux, dans laquelle au moins un d'eux est un milieu à écoulement laminaire, en particulier un fluide à haute viscosité.
EP09405136A 2009-08-12 2009-08-12 Dispositif de mélange statique pour matières pouvant s'écouler Active EP2286904B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT09405136T ATE553839T1 (de) 2009-08-12 2009-08-12 Statische mischvorrichtung für fliessfähige stoffe
EP09405136A EP2286904B1 (fr) 2009-08-12 2009-08-12 Dispositif de mélange statique pour matières pouvant s'écouler
US12/855,295 US8807826B2 (en) 2009-08-12 2010-08-12 Static mixing device for flowable substances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09405136A EP2286904B1 (fr) 2009-08-12 2009-08-12 Dispositif de mélange statique pour matières pouvant s'écouler

Publications (2)

Publication Number Publication Date
EP2286904A1 EP2286904A1 (fr) 2011-02-23
EP2286904B1 true EP2286904B1 (fr) 2012-04-18

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EP09405136A Active EP2286904B1 (fr) 2009-08-12 2009-08-12 Dispositif de mélange statique pour matières pouvant s'écouler

Country Status (3)

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US (1) US8807826B2 (fr)
EP (1) EP2286904B1 (fr)
AT (1) ATE553839T1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
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EP3081285A1 (fr) 2015-04-16 2016-10-19 Fluitec Invest AG Dispositif de mélange statique pour des matières pouvant s'écouler
EP3932531A1 (fr) 2020-07-02 2022-01-05 Fluitec Invest AG Calorimètre à réactions continu

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JP5724904B2 (ja) * 2012-02-20 2015-05-27 株式会社デンソー 膨張弁
EP2915581B1 (fr) 2014-03-06 2017-07-12 Fluitec Invest AG Mélangeur statique
EP3034159B1 (fr) * 2014-12-18 2020-11-04 The Procter and Gamble Company Mélangeur statique et procédé pour mélanger des fluides
US10729600B2 (en) 2015-06-30 2020-08-04 The Procter & Gamble Company Absorbent structure
HUE057989T2 (hu) 2015-11-04 2022-06-28 Procter & Gamble Nedvszívó szerkezetet tartalmazó nedvszívó árucikk
EP3370673B1 (fr) 2015-11-04 2022-03-30 The Procter & Gamble Company Structure absorbante
WO2017079597A1 (fr) 2015-11-04 2017-05-11 The Procter & Gamble Company Structure absorbante
JP6976245B2 (ja) 2015-11-11 2021-12-08 フルイテック インヴェスト アーゲー 連続法による化学反応を行うための装置
EP3181221A1 (fr) 2015-12-16 2017-06-21 Fluitec Invest AG Procede de surveillance d'une reaction chimique et reacteur
DE102016008759A1 (de) 2016-07-18 2018-01-18 Giang Do Additiv gefertigte zelluare Bauteile als justierbare statische Mischer
CN113166356B (zh) 2018-11-28 2023-12-29 巴斯夫欧洲公司 生产聚氨酯组合物的方法
WO2023117854A1 (fr) 2021-12-20 2023-06-29 Basf Se Procédé de production en continu de dispersions aqueuses de polyuréthane
EP4292699A1 (fr) 2022-06-17 2023-12-20 Fluitec Invest AG Appareil et procédé pour effectuer une réaction chimique non sélective
EP4309772A1 (fr) 2022-07-19 2024-01-24 Glue Tec Industrieklebstoffe GmbH & Co. Kg Mélangeur statique

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CH642564A5 (de) 1979-10-26 1984-04-30 Sulzer Ag Statische mischvorrichtung.
DE4428813C2 (de) * 1994-08-13 1996-11-14 Ewald Schwing Verfahrenstechni Vorrichtung zum statischen Mischen von Fluiden, insbesondere von thermoplastifiziertem Kunststoff, und Verfahren zur Herstellung einer solchen Vorrichtung
DE19813600A1 (de) * 1998-03-27 1999-09-30 Bayer Ag Statischer Scheibenmischer
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DE10063485A1 (de) * 2000-12-20 2002-07-04 Bayer Ag Statischer Mischer
CH693560A5 (de) 2001-11-05 2003-10-15 Fluitec Georg Ag Statische Mischvorrichtung für fliessfähige Stoffe.
CN1321729C (zh) * 2002-07-15 2007-06-20 苏尔泽化学技术美国公司 交叉元件的组件及其构建的方法
US7198400B2 (en) * 2003-05-03 2007-04-03 Husky Injection Molding Systems Ltd. Static mixer and a method of manufacture thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3081285A1 (fr) 2015-04-16 2016-10-19 Fluitec Invest AG Dispositif de mélange statique pour des matières pouvant s'écouler
EP3932531A1 (fr) 2020-07-02 2022-01-05 Fluitec Invest AG Calorimètre à réactions continu

Also Published As

Publication number Publication date
US8807826B2 (en) 2014-08-19
EP2286904A1 (fr) 2011-02-23
US20110080801A1 (en) 2011-04-07
ATE553839T1 (de) 2012-05-15

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