EP1674152A2 - Micromélangeur statique - Google Patents

Micromélangeur statique Download PDF

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Publication number
EP1674152A2
EP1674152A2 EP05027040A EP05027040A EP1674152A2 EP 1674152 A2 EP1674152 A2 EP 1674152A2 EP 05027040 A EP05027040 A EP 05027040A EP 05027040 A EP05027040 A EP 05027040A EP 1674152 A2 EP1674152 A2 EP 1674152A2
Authority
EP
European Patent Office
Prior art keywords
mixing chamber
junctions
static micromixer
fluid
micromixer according
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
EP05027040A
Other languages
German (de)
English (en)
Other versions
EP1674152A3 (fr
EP1674152B1 (fr
Inventor
Klaus Dr. Schubert
Jürgen Dr. Brandner
Manfred Kraut
Achim Wenka
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.)
Forschungszentrum Karlsruhe GmbH
Original Assignee
Forschungszentrum Karlsruhe 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.)
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Publication date
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Publication of EP1674152A2 publication Critical patent/EP1674152A2/fr
Publication of EP1674152A3 publication Critical patent/EP1674152A3/fr
Application granted granted Critical
Publication of EP1674152B1 publication Critical patent/EP1674152B1/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
    • 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
    • B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
    • B01F25/31425—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction with a plurality of perforations in the axial and circumferential direction covering the whole surface
    • 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
    • B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/30—Micromixers
    • B01F33/301—Micromixers using specific means for arranging the streams to be mixed, e.g. channel geometries or dispositions
    • B01F33/3012—Interdigital streams, e.g. lamellae

Definitions

  • the invention relates to a static micromixer with a mixing chamber, feeds for at least two fluid fractions to be mixed or dispersed, each having at least one junction in the mixing chamber and at least one orifice from the mixing chamber according to the preamble of claim 1.
  • a micromixer In a micromixer, the fluids to be mixed, each separately separated, are divided into a large number (often several thousand) of fluid flow filaments, all of which open into a mixing chamber via the inlets, via the inlets.
  • a static micromixer is characterized by the fact that there are no moving parts in it except for the fluid fractions to be mixed.
  • such a micromixer with at least one mixing chamber and an upstream guide component for the separate supply of fluids to be mixed to a mixing chamber
  • the guide member with dimensions in the millimeter range of several superimposed films having a respective thickness of 100 microns thickness is composed, in which the channels are incorporated as microstructures.
  • the channels of a film comprise feeds for only one of the two fluid fractions.
  • a similar micromixer in which, with an otherwise identical structure and functional principle, the supply channels of two fluids to be mixed or discharged in an arcuate manner run parallel to one another into the mixing chamber is described in DE 195 40 292 C1.
  • the guide channels have a constant cross-section with widths less than 250 microns, the films in which the channel structures are incorporated, a thickness of about 100 microns.
  • WO97 / 17130 Another way to optimize the mixing process is WO97 / 17130.
  • the micromixer By merging individual channels into a slot-shaped channel per film, the micromixer obtains a more favorable ratio of volume flow to channel wall surface and thus a reduction in the friction pressure losses in the guide component due to the omission of the webs between the individual channels.
  • the object of the invention is to propose a static micromixer of the generic type with an improved mixing efficiency.
  • the invention comprises a mixing chamber, a number of feeds for at least two fluid fractions to be mixed or dispersed, each having at least one confluence with the mixing chamber and at least one orifice from the mixing chamber.
  • the wall of the mixing chamber in the region of the junctions can be designed as desired, but preferably flat or as a cylindrical surface.
  • the essential feature of the invention relates to the arrangement of the junctions of the fluid fractions in the mixing chamber, in alternating order in at least two planes, wherein the junctions of a plane are arranged offset to those in the respective adjacent plane.
  • An alternating sequence of the junctions and thus of the fluid flow filaments flowing into the mixing chamber ensures high specific mixing surfaces between the fluid fractions to be mixed or dispersed in the mixing chamber. This can be further improved by the fact that the junctions in several, ie at least two levels are arranged, wherein the junctions of a plane are arranged offset from those in the respective adjacent level.
  • each of the fluid flow filaments completely borders, i. on all sides of the fluid flow filaments of another fluid fraction, whereby a maximum possible specific mixing surface between the fluid fractions and consequently a further improvement of the mixing efficiency can be achieved.
  • mixing or dispersing two fluid fractions is ideally created an arrangement of the individual junction cross-sections similar to a checkerboard arrangement.
  • the orientation of the junctions to the mixing chamber wall i. the angle of incidence of the fluid flow filaments is between 0 ° (parallel to the mixing chamber wall) and 90 ° (orthogonal to the mixing chamber wall) preferably in favor of a laminar flow parallel to each other in the direction of the outlet or outlets.
  • turbulent flow fractions promote thorough mixing or dispersion of the fluid flow filaments in the mixing chamber, they also cause larger residence time differences of the fluid mixtures in the mixing chamber, which are absolutely to be avoided in the case of certain, in particular reactive mixing processes.
  • the object is achieved in that the layers are formed by stacked films with grooves as fluid guides, wherein the feeds per fluid fraction via fluid channels, comprising superimposed openings in the films, are fluidly interconnected.
  • the superimposed openings form in the film stack, the fluid channels from which branch off the fluid guides to the mixing chamber.
  • the fluid connections to the fluid channels are preferably placed on the respective limiting outer cover film.
  • one is Feed can also be realized via channels on one or more foils, wherein preferably the respective limiting outer cover foils sealingly cover the fluid channels.
  • the aforementioned low pitch angle of the junctions can be achieved for example by a design of the films wholly or only in the region of the junctions, i. directly in the wall of the mixing chamber as a truncated cone lateral surfaces or as angled, bent or bent films. This is, for example, via a cold forming of the individual films or of the film stack before the connection of the films with one another to the guide component, e.g. realized via a diffusion welding.
  • the fluid channels with appropriate means for measurements such as e.g. a thermocouple or for a temperature control or a pressure measurement such. equipped with a heating element or a fluidic heat exchanger and dimensioned accordingly, which can be tailored to the fluid fractions in an advantageous manner immediately before entering the fluid guides individually.
  • appropriate means for measurements such as e.g. a thermocouple or for a temperature control or a pressure measurement such. equipped with a heating element or a fluidic heat exchanger and dimensioned accordingly, which can be tailored to the fluid fractions in an advantageous manner immediately before entering the fluid guides individually.
  • the first embodiment has a flat wall of the mixing chamber in the region of the junctions.
  • 1a and b show an example of a part of this embodiment for the mixing of two fluid fractions A and B, namely the guide member 1, comprising a plurality of gas-tight and pressure-tight interconnected (eg via a diffusion welding process), alternately stacked films 2 and 3 (first film 2 and second film 3) between two cover films 4.
  • the guide member 1 comprising a plurality of gas-tight and pressure-tight interconnected (eg via a diffusion welding process), alternately stacked films 2 and 3 (first film 2 and second film 3) between two cover films 4.
  • the feeds 5 and the junctions 6 are incorporated as channel structures (preferably, cutting, e-rosic or chemically corrosive).
  • the cover films have connection openings 7 for the abovementioned fluid connections, which are not shown in FIGS. 1a and b, however.
  • connection openings adjoin the aforementioned fluid channels in the guide component, which form in the films in the film stack by a number of apertures 8 arranged congruently one above the other.
  • the fluids A and B are introduced into the fluid channels (represented by arrows on the cover foils 4) and from there into the feeders 5 in order to leave the guide component via junctions 6 into the mixing chamber.
  • the surface of the guide member 1 in the region of the junctions 6 forms the flat wall 9 of the mixing chamber.
  • the alternating layer sequence of the foils 2 and 3 continues into the region 10 as far as the cover foil 4.
  • each film opens only a feed 5 from each aperture 8, wherein the apertures form the fluid channels for the fluid fractions A and B in an alternating sequence.
  • Each foil thus forms a plane with junctions of the fluid fractions A and B in alternating sequence.
  • the channel structures of film 2 and 3 are not congruent, but have mutually arranged junctions 6 and 5 feeds.
  • the checkerboard pattern of the junctions 6 of the fluids A and B is shown in FIGS. 1a and b, the junctions oriented at an angle of 90 ° to the wall 9 are (see Fig.2).
  • the junctions 6 of the fluid fractions A and B are oriented parallel to one another in favor of laminar mixing of the abovementioned fluid flow filaments in the mixing chamber (see FIG. In principle, angles greater than 0 °, in particular between 45 and 90 °, are suitable.
  • an unequal angle and thus a crossing of the fluid flow filaments are to be striven for in principle, if a targeted adjustment of a turbulent flow state is desired directly at the junctions.
  • the angle difference is preferably above 10 °. If it is above 90 °, there will be a counterflow of the fluid flow filaments and thus an undesired increased back pressure.
  • FIGS . 3 to 5 A second embodiment of the static micromixer is shown in FIGS . 3 to 5 . It is characterized by a preferably symmetrical about an axis of symmetry 13 preferably cylindrical mixing chamber 12 with two end portions.
  • the guide component 1 comprises, as in the first embodiment, a plurality of foils 2 and 3 with fluid channels forming openings 8 and channel structures, ie the leads 5 and junctions 6, and a cover sheet 4 with the connection openings 7 for supplying the fluids A and B.
  • Das Guide member 1 is in turn sealingly placed on a mixing chamber housing 14, -glued or -welded.
  • the axis of symmetry is orthogonal to the planes formed by the films.
  • the foils 2 and 3 and thus the junctions (see Figures 3 and 4) and the outlets 11 (see Fig.3) are located in each one of these end portions, wherein the aforementioned guide member 1, the one end of the rotationally symmetric mixing chamber 12 completely encloses.
  • the feeds 5 shown on the second foil 3 have an offset to the apertures 8, whereby the junctions 6 on the mixing chamber wall 9 with alternating sequence of the foils 2 and 3 and in a order each one confluence per level (slide) staggered arrangement of the junctions according to a checkerboard pattern (see Fig.4 and 5).
  • the junctions are aligned with respect to the axis of symmetry and each form a right angle with this.
  • the junctions can be arranged askew to the axis of symmetry, whereby in a rotationally symmetrical mixing chamber, a flow direction, preferably a helical, in particular in the outer region of the mixing chamber, pretending. It makes sense to make the mixing chamber as an annular gap volume and / or to arrange the orifices in the flow direction.
  • the orifices are arranged outside the axis of symmetry.
  • a knit as possible similar geometric alignment of all Junctions in their arrangement to the axis of symmetry for both of the fluid fractions favors laminar mixing of the fluid flow filaments in the aforementioned manner.
  • FIG. 6 shows a sectional view of another embodiment with an annular gap volume as a rotationally symmetrical mixing chamber 12. It differs from the embodiment shown in Figure 3 to 5 the second embodiment by the arranged around the symmetry axis 13 of core 15. If the inlets in the aforementioned sense skew to the axis of symmetry 13 and also aligned to this, builds in the annular gap volume around the core 15 in the direction of the orifice 11 a flow helix.
  • FIG. 6 also shows by way of example the course of the fluid channels 16 formed by the openings of the foils 2 and 3.
  • the temperature device comprises a microfluidic heat exchanger with a microchannel structure and a temperature control medium flowing through, ie with two connections 1 and two distribution channels 18, between which a plurality of parallel individual channels 19 penetrates the mixing chamber housing 14.
  • other components of the static micromixer can also be tempered, i. heat or cool, such as in the region of the core, selectively the feeds and Einmündugen for a fluid fraction or the orifice.
  • tempered i. heat or cool, such as in the region of the core, selectively the feeds and Einmündugen for a fluid fraction or the orifice.
  • a temperature of the junctions can be undesirable effects of larger temperature and pressure gradients, such as cavitation or changes in the state of matter, reduce upon entry of fluid flow filaments of a fluid fraction from the junctions into the mixing chamber.
  • the temperature control medium is axially in one direction to one Guided end of the core to pass it back axially between the inner and outer tube with heat in the surrounding area of the mixing chamber 12.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Accessories For Mixers (AREA)
EP05027040A 2004-12-23 2005-12-10 Micromélangeur statique Active EP1674152B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004062074A DE102004062074A1 (de) 2004-12-23 2004-12-23 Statischer Mikrovermischer

Publications (3)

Publication Number Publication Date
EP1674152A2 true EP1674152A2 (fr) 2006-06-28
EP1674152A3 EP1674152A3 (fr) 2006-07-05
EP1674152B1 EP1674152B1 (fr) 2008-03-26

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Family Applications (1)

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EP05027040A Active EP1674152B1 (fr) 2004-12-23 2005-12-10 Micromélangeur statique

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EP (1) EP1674152B1 (fr)
AT (1) ATE390203T1 (fr)
DE (2) DE102004062074A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2936959A3 (fr) * 2008-10-14 2010-04-16 Renault Sas Dispositif de melange de gaz.
WO2011091962A1 (fr) 2010-01-28 2011-08-04 Cargill, Incorporated Microtraitement servant à la préparation d'un polycondensat
WO2011159409A1 (fr) * 2010-06-14 2011-12-22 Dow Global Technologies Llc Mélangeur statique à injection réactive, et procédés de mélange pendant une opération de mélange amine-phosgène
EP2433970A1 (fr) 2010-09-28 2012-03-28 Cargill, Incorporated Procédé en microfluidique pour préparer un polycondensat
EP2759334A4 (fr) * 2012-04-06 2015-05-27 Fujikura Ltd Dispositif de régulation de fluide et mélangeur de fluides
WO2017162681A1 (fr) 2016-03-23 2017-09-28 Karlsruher Institut für Technologie Réacteur pour la production de gaz de synthèse
WO2019240653A1 (fr) * 2018-06-12 2019-12-19 Martin Andersson Procédé et système de mélange microfluidique
WO2021195534A1 (fr) 2020-03-26 2021-09-30 Cargill, Incorporated Microtraitement pour la préparation d'une protéine modifiée
WO2023159173A1 (fr) 2022-02-17 2023-08-24 Cargill, Incorporated Dextrines résistantes et procédés de fabrication de dextrines résistantes
WO2023159175A1 (fr) 2022-02-17 2023-08-24 Cargill, Incorporated Dextrines résistantes et procédés de fabrication de dextrines résistantes
WO2023159171A1 (fr) 2022-02-17 2023-08-24 Cargill, Incorporated Dextrines résistantes et procédés de fabrication de dextrines résistantes
WO2023159172A1 (fr) 2022-02-17 2023-08-24 Cargill, Incorporated Dextrines résistantes et procédés de fabrication de dextrines résistantes

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007013932A1 (de) 2007-03-23 2008-09-25 Forschungszentrum Karlsruhe Gmbh Vorrichtung und Verfahren zum Mischen von mindestens zwei Flüssigkeiten und Verwendung der Vorrichtung
DE102007041737B4 (de) * 2007-09-04 2010-01-14 Buma Gmbh & Co. Kg Mischvorrichtung zur Mischung von viskosen Komponenten
CN101716473B (zh) * 2009-11-04 2011-11-30 中国科学院长春光学精密机械与物理研究所 芯片内微混合器及其制作方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995030476A1 (fr) * 1994-05-09 1995-11-16 Bayer Aktiengesellschaft Procede et dispositif permettant la realisation de reactions chimiques au moyen d'un melange a microstructure
WO2002089966A2 (fr) * 2001-05-07 2002-11-14 Uop Llc Appareil destine a melanger et a faire reagir au moins deux fluides

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4433439A1 (de) * 1994-09-20 1996-03-21 Kernforschungsz Karlsruhe Verfahren zur Durchführung chemischer Reaktionen mittels Mikrostruktur-Mischung
DE4416343C2 (de) * 1994-05-09 1996-10-17 Karlsruhe Forschzent Statischer Mikro-Vermischer
DE19540292C1 (de) * 1995-10-28 1997-01-30 Karlsruhe Forschzent Statischer Mikrovermischer
DE19541266A1 (de) * 1995-11-06 1997-05-07 Bayer Ag Verfahren und Vorrichtung zur Durchführung chemischer Reaktionen mittels eines Mikrostruktur-Lamellenmischers
DE10041823C2 (de) * 2000-08-25 2002-12-19 Inst Mikrotechnik Mainz Gmbh Verfahren und statischer Mikrovermischer zum Mischen mindestens zweier Fluide
DE10123092B4 (de) * 2001-05-07 2005-02-10 INSTITUT FüR MIKROTECHNIK MAINZ GMBH Verfahren und statischer Mischer zum Mischen mindestens zweier Fluide
JP4431857B2 (ja) * 2003-05-30 2010-03-17 富士フイルム株式会社 マイクロデバイス

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995030476A1 (fr) * 1994-05-09 1995-11-16 Bayer Aktiengesellschaft Procede et dispositif permettant la realisation de reactions chimiques au moyen d'un melange a microstructure
WO2002089966A2 (fr) * 2001-05-07 2002-11-14 Uop Llc Appareil destine a melanger et a faire reagir au moins deux fluides

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2936959A3 (fr) * 2008-10-14 2010-04-16 Renault Sas Dispositif de melange de gaz.
WO2011091962A1 (fr) 2010-01-28 2011-08-04 Cargill, Incorporated Microtraitement servant à la préparation d'un polycondensat
WO2011159409A1 (fr) * 2010-06-14 2011-12-22 Dow Global Technologies Llc Mélangeur statique à injection réactive, et procédés de mélange pendant une opération de mélange amine-phosgène
US9259704B2 (en) 2010-06-14 2016-02-16 Dow Global Technologies Llc Static reactive jet mixer, and methods of mixing during an amine-phosgene mixing process
EP2433970A1 (fr) 2010-09-28 2012-03-28 Cargill, Incorporated Procédé en microfluidique pour préparer un polycondensat
EP2759334A4 (fr) * 2012-04-06 2015-05-27 Fujikura Ltd Dispositif de régulation de fluide et mélangeur de fluides
US9358512B2 (en) 2012-04-06 2016-06-07 Fujikura Ltd. Fluid control device and fluid mixer
DE102016105492A1 (de) 2016-03-23 2017-09-28 Karlsruher Institut für Technologie Reaktor zur Herstellung von Synthesegas
WO2017162681A1 (fr) 2016-03-23 2017-09-28 Karlsruher Institut für Technologie Réacteur pour la production de gaz de synthèse
US10888833B2 (en) 2016-03-23 2021-01-12 Karlsruher Institut Fuer Technologie Reactor for producing synthesis gas
WO2019240653A1 (fr) * 2018-06-12 2019-12-19 Martin Andersson Procédé et système de mélange microfluidique
WO2021195534A1 (fr) 2020-03-26 2021-09-30 Cargill, Incorporated Microtraitement pour la préparation d'une protéine modifiée
WO2023159173A1 (fr) 2022-02-17 2023-08-24 Cargill, Incorporated Dextrines résistantes et procédés de fabrication de dextrines résistantes
WO2023159175A1 (fr) 2022-02-17 2023-08-24 Cargill, Incorporated Dextrines résistantes et procédés de fabrication de dextrines résistantes
WO2023159171A1 (fr) 2022-02-17 2023-08-24 Cargill, Incorporated Dextrines résistantes et procédés de fabrication de dextrines résistantes
WO2023159172A1 (fr) 2022-02-17 2023-08-24 Cargill, Incorporated Dextrines résistantes et procédés de fabrication de dextrines résistantes

Also Published As

Publication number Publication date
DE102004062074A1 (de) 2006-07-06
EP1674152A3 (fr) 2006-07-05
DE502005003443D1 (de) 2008-05-08
EP1674152B1 (fr) 2008-03-26
ATE390203T1 (de) 2008-04-15

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