EP1572335A2 - Micromelangeur lamellaire statique - Google Patents

Micromelangeur lamellaire statique

Info

Publication number
EP1572335A2
EP1572335A2 EP03780105A EP03780105A EP1572335A2 EP 1572335 A2 EP1572335 A2 EP 1572335A2 EP 03780105 A EP03780105 A EP 03780105A EP 03780105 A EP03780105 A EP 03780105A EP 1572335 A2 EP1572335 A2 EP 1572335A2
Authority
EP
European Patent Office
Prior art keywords
plate
slot
diaphragm
openings
plates
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
EP03780105A
Other languages
German (de)
English (en)
Other versions
EP1572335B1 (fr
Inventor
Wolfgang Ehrfeld
Matthias Kroschel
Till Merkel
Frank Herbstritt
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.)
Ehrfeld Mikrotechnik BTS GmbH
Original Assignee
Ehrfeld Mikrotechnik BTS 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 Ehrfeld Mikrotechnik BTS GmbH filed Critical Ehrfeld Mikrotechnik BTS GmbH
Publication of EP1572335A2 publication Critical patent/EP1572335A2/fr
Application granted granted Critical
Publication of EP1572335B1 publication Critical patent/EP1572335B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B01F25/421—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 by moving the components in a convoluted or labyrinthine path
    • B01F25/422—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 by moving the components in a convoluted or labyrinthine path between stacked plates, e.g. grooved or perforated plates
    • 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
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • 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
    • 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
    • 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
    • B01F33/30121—Interdigital streams, e.g. lamellae the interdigital streams being concentric lamellae
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S366/00—Agitating
    • Y10S366/03—Micromixers: variable geometry from the pathway influences mixing/agitation of non-laminar fluid flow

Definitions

  • the invention relates to a micromixer for mixing, dispersing, emulsifying or suspending at least two fluid phases, which must contain at least one slotted plate with slotted openings and a diaphragm plate arranged above it with bent slits.
  • the slot openings in the slot plate (s) and cover plate (s) are designed as through openings.
  • the opening can be of any shape, preferably the opening has a simple geometry (e.g. hole or rectangular slot).
  • Static micromixers are key elements of microreaction technology.
  • Statistical micromixers take advantage of the principle of multilamination in order to achieve rapid mixing of fluid phases by diffusion.
  • a geometric configuration of alternately arranged lamellae makes it possible to ensure good mixing in the microscopic range.
  • Multilamination mixers made of structured and periodically stacked thin plates have already been described in detail in the literature; Examples of this can be found in German patents DE 44 16 343, DE 19540 292 and German patent application DE 199 28 123.
  • German patent application DE 199 27 554 also describes, in contrast to the multi-lamination mixers, which consist of structured and periodically stacked, thin plates , a micromixer for mixing two or more starting materials, the micromixer having mixing cells.
  • Each of these mixing cells has a feed chamber which is adjoined by at least two groups of channel fingers, which engage in a comb-like manner between the channel fingers to form mixing areas.
  • Above the mixing area are outlet slots that extend perpendicular to the channel fingers and through which the product exits.
  • the plates are preferably firmly connected to one another and the microstructures are therefore no longer freely accessible; cleaning of the micromixers described is therefore not possible in a simple manner.
  • the plate stacks have to be dismantled, which generally proves to be very complex.
  • the advantages achieved by the invention are that the static lamination micro-mixer can be manufactured inexpensively, is easy to clean and the fluids to be mixed are mixed quickly and effectively with one another.
  • the pressure drop is so low that it can also be used for large throughputs.
  • the number of blind slots in the cover plate and / or the number of slot openings in the slot plate can be greater than 1.
  • the fluid streams brought in from different areas of the fluid distribution are guided in the slot openings of the slot plate in such a way that they enter the slot opening of an overlying slot or diaphragm plate.
  • the fluid phases come together in the slot openings of the diaphragm plate.
  • the slot openings in the slot plate can be offset parallel to one another and / or can be arranged in a periodic pattern to one another. Through Suitable geometric shape and alignment can favor slot openings according to claim 6 structures in the slot plate, the emergence of secondary effects.
  • the slot openings can be arranged obliquely to each other.
  • a further embodiment allows the slot openings to be funnel-shaped or club-shaped. This configuration of the molds can be expedient in order to achieve a uniform pressure distribution in the feed channels. This is a prerequisite for achieving a uniform mixing quality in the entire component. It is also possible for a plurality of slotted plates and / or diaphragm plates to be arranged offset directly from one another.
  • a control of the flow can be achieved according to protection claim 9, if slotted plates and / or diaphragm plates that are directly one above the other or staggered are used.
  • the steering effect according to protection claim 11 can be used to direct the one or more fluid flows to the metering point of one or more fluid flows.
  • the mixing chamber can be mounted above the cover plate according to protection claim 12.
  • protection claim 13 it is also possible that the glare slots in the diaphragm plate are offset parallel to one another and / or can be arranged in a periodic pattern with respect to one another.
  • a further advantageous embodiment of the invention allows the slot openings in the slot plate and the diaphragm slots in the diaphragm plate to be arranged at any angle, preferably 90 °, with respect to one another.
  • the slot openings in the slot plate and the blind slots in the cover plate can have a width of less than 500 microns. To improve the result when mixing liquids, emulsifying or suspending, slit openings with widths of less than 100 ⁇ m have proven particularly useful.
  • the width of the slot openings in the slot plate is for everyone in the basic type of mixer all fluid phases are the same. However, it has been shown that when bringing together fluids that differ in terms of their viscosity and / or in which the volume flows are in a numerical ratio other than 1: 1, it can be advantageous if the width and / or shape and cross section are different differentiate the slot openings in the slot plate for the different fluids.
  • a further advantageous embodiment allows the slit and cover plates to be made partially or completely of metal, glass, ceramic and plastic or of a combination of these materials.
  • the slotted and cover plates can be produced by stamping, embossing, milling, eroding, etching, plasma etching, laser cutting, laser cladding or by the LIGA technology, but preferably by laser cutting or LIGA technology.
  • a further advantageous embodiment allows the slit and cover plates to consist of a stack of microstructured thin plates; these thin, micro-structured plates can be bonded to one another by soldering, welding, diffusion welding or gluing, or non-positively by screwing, pressing (eg in a housing) or riveting.
  • An advantageous embodiment according to claim 20 allows the blind slots in the cover plate and the slot openings in the slot plate to be branched.
  • the static micromixer obtained in this way can be accommodated in a housing provided for this purpose.
  • the housing can contain channels, thus allowing a spatial division of the fluids. These channels can be arranged parallel to one another, radially, concentrically or one behind the other. In order to achieve a suitable distribution of the speeds along the channels, it may be advantageous to maintain or vary their cross sections according to claim 24 over their length.
  • micro-mixer can be used according to claim 25 individually or as part of a modular arrangement for performing physical or chemical conversions or can be integrated according to claim 26 together with other function modules in a component. Exemplary embodiments of the inventions are shown in the drawings and are described in more detail below.
  • Figure 1 is a schematic representation of the static micromixer consisting of a slotted and an orifice plate.
  • FIG. 2a shows an exploded view of a static lamination micro-mixture consisting of the lower housing part (10), feed channels (11), slotted plate (20) and cover plate (30);
  • Fig. 2b representation of a static lamination micro-mixer consisting of lower housing part (10), feed channels (11), slotted plate (20) and cover plate (30);
  • Fig. 3a top view of the feed channels (11), slot openings (22a, 22b) and glare slots (31) of a static lamination micro-mixer;
  • FIG. 3b top view of the slot openings of different geometry and orientation (22) in a slot plate (20) of a static lamination micro-mixer;
  • FIG. 3c plan view of the slot openings of different geometry and orientation (22) in a slot plate (20) of a static
  • Fig. 3d top view of the slot openings of different geometry and orientation (22) in a slot plate (20), wherein the slot openings for both fluids overlap in the plane of the slot plate;
  • 3e top view of the slot openings of different geometry and orientation (22) in a slot plate (20), the slot openings having different widths and shapes;
  • 3f top view of the slot openings of different geometry and orientation (22) in a slot plate (20), the slot openings, the blind slots (31) and / or the feed channels (11) having different and variable widths and shapes;
  • 4b shows a top view of a static lamination micro-mixer
  • FIG. 6 shows an exploded view of a static micromixer with viewing angle from below
  • Fig. 7 a schematic representation of the lower housing part (10);
  • Fig. 7b cross section through lower housing part (10) along the plane B-B;
  • Fig. 7c cross section through the lower housing part (10) along the plane C-C;
  • 8a shows a schematic representation of a static micromixer with two different slotted plates and staggered slot openings (22, 23);
  • FIG. 8b schematic representation of a composite static
  • Lamination micro mixer with two different slotted plates; 9a exploded views of lamination micro-mixers with a parallel offset arrangement of the channels for separating the fluids in the housing;
  • Fig. 9b exploded views of lamination micro mixers with radially concentric arrangement of the channels for separating the
  • FIG. 1 shows the schematic representation of a static lamination micro-mixer consisting of a lower part 10, a slotted plate 20 and an anti-glare plate 30.
  • the lower part 10 contains the feed channel 11a for the fluid A and the feed channel 11b for the fluid B.
  • the slot plate 20 has slot openings 22a and 22b for the fluids A and B which are fed from the feed channel 11a and 11b.
  • the diaphragm plate 30 with a diaphragm slot 31 is located above the diaphragm plate 20.
  • the diaphragm plate 30 covers the outer area of the slot openings 22a and 22b, while the central area of the slot openings 22a and 22b overlaps with the diaphragm slot 31 and thereby remains free.
  • 2a shows the exploded view of a static micromixer consisting of lower part 10, feed channels 11a and 11b, slotted plate 20 and orifice plate 30.
  • the feed channels 11a and 11b each contain the fluids A and B;
  • the slot plate 20 with the slot openings 22a and 22b is located above these feed channels.
  • 2b shows a schematic illustration of a static micromixer, as shown in FIG. 2a, consisting of lower part 10, slotted plate 20 and cover plate 30.
  • slot openings 22a and 22b arranged in double rows in the form of slot areas 21. These slot areas 21 are supplied with fluids through the feed channels 11a and 11b. One half of the slot openings 22a overlaps with the feed channels 11a, the other with the feed channels 1b. In the central region of the double rows, the slot openings 22 overlap with the blind slot 31 arranged above them. As shown here, the slot openings 22 can also be arranged obliquely.
  • 3b, 3c, 3d, 3e and 3f show slot openings 22 with different geometrical configurations and orientations.
  • the feed channels 11 are located below the slot openings.
  • the blind slots 31 are located above the slot openings.
  • the cross sections of the feed channels 11 and the blind slots 31 can vary along their course (FIG. 3f).
  • the slot openings 22 can be expanded in a funnel shape. The width and shape of the slot openings 22 can vary between the fluids (Fig. 3e) and within the fluids (Fig. 3f).
  • FIG. 4a shows the top view of a lower housing part 10.
  • the lower housing part 10 is provided with numerous slot-shaped feed channels 11 a and 11 b, which are shown alternately shifted to the right or left.
  • the slot plate 20 arranged above are the slot area 21 shown as black bars; the slot area 21 is positioned between two feed channels 11a and 11b, so that it is overlapped by two feed channels.
  • the blind slots 31 of the overlying blind plate 30 are located centrally above the slot regions 21 of the slot plate 20.
  • FIG. 4b shows a schematic arrangement of feed channels 11a and 11b, slot regions 21 and blind slots 31.
  • Figure 5 shows an exploded view of a static lamination micromixer; the micromixer consists of the lower housing part 10 and the upper housing part 40. Between the lower housing part 10 and the upper housing part 40 there are the slotted plates 20 and the cover plates 30. In the lower housing part 10 there is a groove 13 into which a sealing ring 50 can be inserted, so that the micromixer to seal against the environment.
  • the lower housing part 10 and the upper housing part 40 are each provided with openings for fastening elements 44, through which both can be fixed against one another.
  • the lower housing part 10 contains on the outer surface two fluid inlet channels 12a and 12b for the fluids A and B to be mixed.
  • the slot plate 20 contains numerous slot areas 21;
  • the cover plate 30, which has a plurality of cover slots 31, is attached above the slit plate 20.
  • the upper housing part 40 contains a fluid outlet 42 for discharging the mixture obtained.
  • FIG. 6 shows, in analogy to FIG. 5, an exploded view of a static lamination micro-mixer with a viewing angle from the underside.
  • the upper housing part 40 contains a large mixing chamber 45, into which all blind slots 31 of the blind plate 30 open.
  • a plurality of support structures 41 are attached in the upper housing part 40.
  • FIG 7a shows the schematic representation of the lower housing part 10.
  • the lower housing part 10 is provided with supply channels 11a and 11b for the fluids A and B to be mixed.
  • Fluid inlets 12a and 12b are provided on the outer sides of the lower housing part.
  • the recesses 44 at the four corners of the lower housing part 10 allow it to be fixed.
  • FIG. 7b shows the cross section through the lower housing part 10 along the line BB in FIG. 7a.
  • the fluid inlet 12a continues in the fluid inlet channel 14 for the fluid A.
  • On the top of the fluid inlet channel 14 are the Feed channels 11a for the fluid.
  • FIG. 7c shows the cross section through the lower housing part 10 along the line C-C in FIG. 7a.
  • the feed channels 11a for the fluid A and 11b for the fluid B run alternately in parallel without there being a cross-connection between these two feed channels.
  • FIG 8a shows the schematic representation of a static lamination micro-mixer with the two different slot openings 22a / 22b and 23a / 23b.
  • the slot openings 22a and 22b of the first slot plate form the feed channels for the second slot plate with small slot openings 23a and 23b.
  • the slot openings 22a / 22b and 23a / 23b are each rotated by 90 ° to one another.
  • FIG. 8b shows the top view of such a static micromixer according to FIG. 8a consisting of two different slotted plates, the slotted openings of which are rotated through 90 ° to one another.
  • FIGS. 9a and 9b show two exemplary embodiments for lamination micro mixers in the exploded view.
  • the slot openings in the slot plate, the slot openings in the cover plate and the channels for distributing the fluids can then be arranged in a circular or parallel arrangement.
  • lamination micro-mixer shows an exemplary embodiment for the use of a lamination micro-mixer as part of an integrated arrangement for performing physico-chemical conversions.
  • lamination micro mixers (60) and tube bundle heat exchangers (70) were integrated into one component. LIST OF REFERENCE NUMBERS

Abstract

Micromélangeur lamellaire statique pour le mélange, la dispersion, l'émulsion ou la suspension d'au moins deux phases fluides, qui comporte au moins une plaque à fentes pourvue d'ouvertures en forme de fentes et une plaque d'obturation située sur la plaque à fentes et pourvue de fentes conçues comme ouvertures traversantes.
EP03780105.7A 2002-12-07 2003-12-03 Micromelangeur lamellaire statique Expired - Lifetime EP1572335B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20218972U DE20218972U1 (de) 2002-12-07 2002-12-07 Statischer Laminationsmikrovermischer
DE20218972U 2002-12-07
PCT/EP2003/013603 WO2004052518A2 (fr) 2002-12-07 2003-12-03 Micromelangeur lamellaire statique

Publications (2)

Publication Number Publication Date
EP1572335A2 true EP1572335A2 (fr) 2005-09-14
EP1572335B1 EP1572335B1 (fr) 2013-05-29

Family

ID=7977747

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03780105.7A Expired - Lifetime EP1572335B1 (fr) 2002-12-07 2003-12-03 Micromelangeur lamellaire statique

Country Status (8)

Country Link
US (1) US7909502B2 (fr)
EP (1) EP1572335B1 (fr)
JP (2) JP4847700B2 (fr)
KR (1) KR100806401B1 (fr)
CN (1) CN100360218C (fr)
AU (1) AU2003288216A1 (fr)
DE (1) DE20218972U1 (fr)
WO (1) WO2004052518A2 (fr)

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KR100806401B1 (ko) 2008-02-21
JP4847700B2 (ja) 2011-12-28
KR20050085326A (ko) 2005-08-29
WO2004052518A3 (fr) 2005-06-09
CN100360218C (zh) 2008-01-09
WO2004052518A2 (fr) 2004-06-24
DE20218972U1 (de) 2003-02-13
AU2003288216A8 (en) 2004-06-30
CN1780681A (zh) 2006-05-31
EP1572335B1 (fr) 2013-05-29
JP2006508795A (ja) 2006-03-16
US20060087917A1 (en) 2006-04-27
US7909502B2 (en) 2011-03-22
AU2003288216A1 (en) 2004-06-30

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