EP1123730B1 - Mélangeur statique - Google Patents

Mélangeur statique Download PDF

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Publication number
EP1123730B1
EP1123730B1 EP01101637A EP01101637A EP1123730B1 EP 1123730 B1 EP1123730 B1 EP 1123730B1 EP 01101637 A EP01101637 A EP 01101637A EP 01101637 A EP01101637 A EP 01101637A EP 1123730 B1 EP1123730 B1 EP 1123730B1
Authority
EP
European Patent Office
Prior art keywords
static mixer
slats
trellises
mixer according
mixer
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
EP01101637A
Other languages
German (de)
English (en)
Other versions
EP1123730A3 (fr
EP1123730A2 (fr
Inventor
Heinrich Schuchardt
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
Bayer Technology Services GmbH
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 Bayer Technology Services GmbH filed Critical Bayer Technology Services GmbH
Priority to DK01101637T priority Critical patent/DK1123730T3/da
Publication of EP1123730A2 publication Critical patent/EP1123730A2/fr
Publication of EP1123730A3 publication Critical patent/EP1123730A3/fr
Application granted granted Critical
Publication of EP1123730B1 publication Critical patent/EP1123730B1/fr
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
    • B01F25/4316—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
    • 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
    • B01F25/4317—Profiled elements, e.g. profiled blades, bars, pillars, columns or chevrons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0058—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having different orientations to each other or crossing the conduit for the other heat exchange medium
    • 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
    • B01F25/4319—Tubular elements
    • 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
    • B01F35/90—Heating or cooling systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0052—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for mixers

Definitions

  • the invention relates to a static mixer consisting of at least one Mixer insert, possibly a support and possibly a hold-down device, with an enclosing housing, the mixer insert from a variety of nested grids, parallel to each other, one on top of the other lying layers arranged webs is composed and wherein the Grid against each other by an angle ⁇ around the main direction of flow through the Mixers are arranged twisted.
  • a pump presses the liquid through static mixer built-in pipe, the main flow axis The following liquid is divided into partial flows, which, depending on the type of internals be swirled and mixed.
  • Kenics mixers With the so-called Kenics mixers (see “Mixing during manufacture and processing von Kunststoffe ", publisher VDI Ges. Kunststofftechnik, VDI publishing house 1986, pp. 238-241), the liquid flow of the mixed material is through a into one Pipe installed divider divided into partial flows. This divider is around that Tube axis twisted. A vortex-shaped flow arises in each of the partial flows, which leads to the redistribution of the liquid in the cross section of the tube. Usually several such mixing elements are arranged one behind the other to form the liquid to share again and again and to achieve a sufficient mixer result. A satisfactory mixture is typically only after 10 to 12 mixing elements reached.
  • SMX mixers consist of two or more mutually perpendicular grids of parallel Metal strips that are welded together at their crossing points and in are made at an angle to the main flow direction of the mixture, in order to to divide and mix the liquid into partial flows.
  • the manufacturing cost for this mixer is very high because of the many welded joints to be made.
  • a single mixing element is unsuitable as a mixer because it only mixes takes place along a preferred direction transverse to the main flow direction. Therefore several mixing elements, which are rotated by 90 ° to each other, must be used one after the other to be ordered. Good mixing typically requires 5 to 6 mixer elements arranged one behind the other.
  • An SMX mixer only points two against each other grid of parallel webs rotated by 180 °. These grids consist of layers more equidistant Stege. Adjacent layers are aligned. Any location represents a plane of symmetry that is not crossed when mixing.
  • the object of the invention is to provide a static mixer which the Mixing effect of the known mixers, especially the SMX mixer, exceeds and can be produced with a minimal manufacturing outlay.
  • a static mixer at least from a housing with possibly a support and possibly a hold-down and with a mixer insert consisting of at least three against each other parallel webs twisted around the direction of flow, leading to Flow direction are set.
  • the invention relates to a static mixer consisting of at least one Mixer insert, possibly a support and possibly a hold-down device, with an enclosing housing, the mixer insert consisting of at least three nested grids of parallel to each other, one on top of the other lying layers arranged webs is composed and wherein the Grid against each other by an angle ⁇ around the main direction of flow through the Mixers are arranged twisted.
  • a preferred embodiment of the static mixer is characterized in that that the webs to the main flow direction through the mixer by an angle ⁇ preferably from 30 to 60 °.
  • the webs are a grid through the bars of the other grilles, the housing and the terminal bars fixed in position by the support and / or the hold-down device.
  • the number of grids in the mixer insert is preferably static Mixer three or four.
  • the static mixer is particularly preferably rotationally symmetrical the number of grids built up.
  • a preferred embodiment of the static mixer is characterized in that that three grids with parallel webs are built from parallel layers of webs are, with adjacent layers each sitting on a gap.
  • Another preferred embodiment of the static mixer is characterized in that that four grids with parallel webs are built from parallel layers of webs are, with adjacent layers aligned with each other.
  • adjacent grating planes are of a grid is offset from each other and the number of grids is four.
  • the webs are designed as hollow webs which open into the housing wall, wherein the housing wall is a casing with feeds divided into several chambers and has derivatives for a heat transfer medium.
  • Another object of the invention is the use of the invention static mixer for mixing highly viscous mix, in particular Polymer melts or polymer solutions with additives, other polymers, Dyes, pigments or stabilizers.
  • a static mixer according to the invention is shown in a perspective view in FIG View shown; the housing 1 is shown cut away.
  • Figure 4 shows a view along the bars of a grid. It can be seen that the Bars 2a, 2b, 2c through the bars 6a, 6b, 6c and 7a, 7b, 7c of the other grids in their Location are fixed. Bridges are only added in the top and bottom layers fixed by the support 3 or the hold-down device 4 (not shown in FIG. 4).
  • Figure 5 shows an arrangement of webs for a mixer insert with a square cross-section and with fourfold rotational symmetry of the webs to each other.
  • This mixer insert requires a housing 1 with a square cross section.
  • FIG. 6 shows a mixer / heat exchanger consisting of a Outer housing 10 and an inner housing 1, with nozzle 13 for the product supply and nozzle 14 for product removal, and a feed line 11 and a drain 12 for a temperature control medium. Walls between outer housing 10 and inner housing 1 divide the space into two chambers 15 and 16 for the supply and discharge of the heat transfer medium.
  • FIG. 9 shows the arrangement of the tubes Ridges 17 inside the mixer / heat exchanger. It is marked by four grids with parallel webs, which are at 90 ° to each other Flow direction are arranged rotated.
  • a particularly narrow pipe arrangement is achieved in that adjacent grid levels of a grid are arranged offset from one another.
  • Figure 10 shows an alternative arrangement of the hollow webs of the mixer insert for a mixer / heat exchanger as shown in Example 4. Adjacent grid levels aligned with each other, the number of grids is four.
  • Such a mixer / heat exchanger is particularly suitable for 2-phase flows. Since the distance of the pipes across the flow direction is large compared to the distance in the main flow direction, there are large flow channels for the product. The arrangement of the tubes results in one in these flow channels Swirl flow with separation into a gas flow inside the channel and a liquid flow on the outside of the channel. This can cause pressure loss when Flow through such a mixer / heat exchanger can be kept small.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Disintegrating Or Milling (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
  • Toys (AREA)

Claims (13)

  1. Mélangeur statique, se composant au moins d'un garnissage de mélangeur (2), éventuellement d'un support (3) et éventuellement d'un moyen de retenue (4), avec une enceinte enveloppante (1), le garnissage de mélangeur (2) étant composé d'au moins trois grilles emboítées les unes dans les autres composées d'ailettes parallèles les unes aux autres (2a, 2b, 2c; 12a, 12b, 12c) disposées en couches (5a, 5b) disposées les unes au-dessus des autres, et les grilles étant disposées avec une inclinaison d'angle α l'une par rapport à l'autre autour de la direction d'écoulement principale à travers le mélangeur.
  2. Mélangeur statique selon la revendication 1, dans lequel les ailettes (2a, 2b, 2c; 12a, 12b, 12c) sont inclinées d'un angle β par rapport à la direction d'écoulement principale à travers le mélangeur.
  3. Mélangeur statique selon la revendication 2, dans lequel l'angle β vaut de 30° à 60°.
  4. Mélangeur statique selon l'une quelconque des revendications 1 à 3, dans lequel les ailettes (2a, 2b, 2c; 12a, 12b, 12c) d'une grille sont fixées dans leur position par les ailettes (6a, 6b, 6c; 7a, 7b, 7c) des autres grilles, par l'enceinte (1) ainsi que, pour les ailettes d'extrémité (2a, 2b, 2c) par le support (3) et/ou par le moyen de retenue (4).
  5. Mélangeur statique selon l'une quelconque des revendications 1 à 4, dans lequel le nombre des grilles est de trois.
  6. Mélangeur statique selon l'une quelconque des revendications 1 à 4, dans lequel le nombre des grilles est de quatre.
  7. Mélangeur statique selon l'une quelconque des revendications 1 à 6, dans lequel le mélangeur présente une symétrie de révolution correspondant au nombre des grilles.
  8. Mélangeur statique selon la revendication 5, dans lequel les trois grilles avec des ailettes parallèles (2a, 2b, 2c; 6a, 6b, 6c; 7a, 7b, 7c) sont constituées de couches parallèles d'ailettes (2a, 2b, 2c; 12a, 12b, 12c), des couches voisines étant chaque fois disposées en quinconce l'une par rapport à l'autre.
  9. Mélangeur statique selon la revendication 6, dans lequel les quatre grilles avec des ailettes parallèles sont constituées de couches parallèles d'ailettes, des couches voisines étant alignées l'une avec l'autre.
  10. Mélangeur statique selon l'une quelconque des revendications 1 à 9, dans lequel les ailettes (2a, 2b, 2c; 12a, 12b, 12c) sont formées par des ailettes creuses et débouchent dans la paroi de l'enceinte, la paroi de l'enceinte présentant une chemise divisée en plusieurs chambres avec des arrivées et des départs pour un fluide caloporteur.
  11. Mélangeur statique selon l'une quelconque des revendications 1 à 10, dans lequel des plans de grille voisins d'une grille sont disposés avec un décalage l'un par rapport à l'autre et le nombre de grilles est de quatre.
  12. Mélangeur statique selon l'une quelconque des revendications 1 à 10, dans lequel des plans de grille voisins d'une grille dont disposés en alignement l'un avec l'autre et le nombre de grilles est de quatre.
  13. Utilisation du mélangeur statique selon l'une quelconque des revendications 1 à 12 pour le mélange de matières à mélanger à haute viscosité, en particulier des polymères fondus ou des solutions de polymères avec des substances d'addition, d'autres polymères, des colorants, des pigments ou des agents stabilisants.
EP01101637A 2000-02-08 2001-01-26 Mélangeur statique Expired - Lifetime EP1123730B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK01101637T DK1123730T3 (da) 2000-02-08 2001-01-26 Statisk blander

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10005457 2000-02-08
DE10005457A DE10005457A1 (de) 2000-02-08 2000-02-08 Statischer Mischer

Publications (3)

Publication Number Publication Date
EP1123730A2 EP1123730A2 (fr) 2001-08-16
EP1123730A3 EP1123730A3 (fr) 2003-05-02
EP1123730B1 true EP1123730B1 (fr) 2004-11-03

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Family Applications (1)

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EP01101637A Expired - Lifetime EP1123730B1 (fr) 2000-02-08 2001-01-26 Mélangeur statique

Country Status (9)

Country Link
US (1) US6595679B2 (fr)
EP (1) EP1123730B1 (fr)
JP (1) JP2001246234A (fr)
AT (1) ATE281230T1 (fr)
CA (1) CA2333839C (fr)
DE (2) DE10005457A1 (fr)
DK (1) DK1123730T3 (fr)
ES (1) ES2232527T3 (fr)
PT (1) PT1123730E (fr)

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CA2333839C (fr) 2009-10-06
DE10005457A1 (de) 2001-08-09
US6595679B2 (en) 2003-07-22
CA2333839A1 (fr) 2001-08-08
ATE281230T1 (de) 2004-11-15
JP2001246234A (ja) 2001-09-11
US20010012235A1 (en) 2001-08-09
PT1123730E (pt) 2005-03-31
DE50104336D1 (de) 2004-12-09
EP1123730A3 (fr) 2003-05-02
ES2232527T3 (es) 2005-06-01
EP1123730A2 (fr) 2001-08-16
DK1123730T3 (da) 2005-02-14

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