EP0945168B1 - Procédé et dispositif pour la préparation d'un mélange homogéne à action continue - Google Patents

Procédé et dispositif pour la préparation d'un mélange homogéne à action continue Download PDF

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Publication number
EP0945168B1
EP0945168B1 EP99102503A EP99102503A EP0945168B1 EP 0945168 B1 EP0945168 B1 EP 0945168B1 EP 99102503 A EP99102503 A EP 99102503A EP 99102503 A EP99102503 A EP 99102503A EP 0945168 B1 EP0945168 B1 EP 0945168B1
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EP
European Patent Office
Prior art keywords
mixing chamber
mixing
valve
control
water
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
EP99102503A
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German (de)
English (en)
Other versions
EP0945168A1 (fr
Inventor
Jürgen Raak
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.)
RAAK, HARALD, DR.
Original Assignee
Raak Harald Dr
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Filing date
Publication date
Application filed by Raak Harald Dr filed Critical Raak Harald Dr
Publication of EP0945168A1 publication Critical patent/EP0945168A1/fr
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Publication of EP0945168B1 publication Critical patent/EP0945168B1/fr
Anticipated expiration legal-status Critical
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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
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • 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
    • B01F23/49—Mixing systems, i.e. flow charts or diagrams
    • 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
    • B01F23/50—Mixing liquids with solids
    • B01F23/59—Mixing systems, i.e. flow charts or diagrams
    • 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
    • B01F33/70—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
    • 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
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/81—Combinations of similar mixers, e.g. with rotary stirring devices in two or more receptacles
    • 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
    • B01F35/20—Measuring; Control or regulation
    • 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
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2112—Level of material in a container or the position or shape of the upper surface of the material

Definitions

  • the present invention relates to a device for continuous manufacturing and online dosing homogeneous mixtures of difficult to mix gaseous, using liquid or solid mixes a liquid solvent, preferably water, consisting of at least one small dimensioned working under overpressure or underpressure conditions Mixing chamber.
  • a liquid solvent preferably water
  • the liquid mixed substances can be emulsions, Act dispersions or the like, solid Mixed substances can be made from powders, granules or the like exist.
  • DE-PS 32 22 209 and in EP 0 096 746 B1 is a continuous manufacturing process of mixtures and inline doses of two heavy miscible components, preferably of water and a polyacrylamide suspension described in which the components via a dosing point of a closed, supplied with a turbine-equipped mixing cell and mixed, which is characterized is that in the mixing cell a gas cushion by feeding is formed by air, which means that the mixed goods initially " be kept contactless "and that the intensive mixing in a pipe mixer connected to the mixing cell he follows.
  • a device is also described in the cited DE-PS, the only liquid on the mixture Dosing is aligned and to carry out the Procedure serves.
  • the device essentially consists from the fact that by means of an injector the air for the gas cushion is generated and a turbine in the mixing cell is arranged by the pressure difference of the first component is driven, and that the supply line of the second Component arranged at a distance from the surface of the mix is.
  • the mixed goods must already be pre-mixed or be merged before going over a Conveying device (pump) for further intensive mixing be fed to the static mixer.
  • a Conveying device pump
  • a direct merging and mixing of several Mixing material in the mixer body is not due to the design possible because the static mixer is only from a tube with fixed static mixer inserts. These mixer inserts differ depending on the mixing feed geometric shapes, but they are cannot and cannot be changed during the mixing process thus have no influence on the quality of the solution the mixture. Due to the closed design is also not a visual control of the mixing process possible (trade journal "CHEMIE TECHNIK", 25. Year -1996- No. 1, page 12 + No. 8, page 38).
  • the dynamic mixers are in contrast to do this, as a rule, discontinuously, i.e. in Batch operation, working mixers, which are very expensive in purchase and require considerably more space.
  • the set-up and cleaning work is accordingly associated with considerable additional effort.
  • System-related moving and rotating parts are required hence an unevenly higher operating cost and Energy consumption than usual with static mixers.
  • dynamic mixers When compared to static mixers dynamic mixers Combine mixed goods in one step and can mix them together at the same time the technical effort required for this is very large. This applies equally if within mixed operation Changes to the device are made can, which have a direct influence on the mixing quality have e.g. those entered in the mixing room Mixing energies are changed by variations of the Agitator speeds, drive powers etc., or by Limitation of the mixing room volume by level restrictions the batch container etc.
  • the mix can fed directly to a mixing chamber and visually controllable there be mixed. Corrections or interventions during the mixing process it is possible at any time by adding a static mixer insert and one for the fill level responsible electronic level sensor height adjustable are arranged.
  • the procedure can also both in the pressure and in the vacuum range (vacuum) be performed.
  • the procedure with the Device according to the invention in the vacuum area is used when there is annoying air or Influences of oxygen should be avoided, e.g. at mixed goods sensitive to oxidation.
  • the already for this Known mixing systems used require one considerable additional technical effort than it does with the the method according to the invention is the case.
  • an additionally installed ventilation unit enables the solvent intensely before entering the mixing zone to ventilate and, if required, the mixing task does that in the subsequent mixing process of the excess portion not taken up by means of a venting device immediately from the same Eliminate mixing chamber.
  • New mixing tasks can be realized with this procedure and carried out, e.g. also by a Modular summary of several consecutive Mixing chambers in a network.
  • a device according to claim 2 which is that in a small dimension Reaction chamber of a mixing chamber, which with a transparent top is equipped, the mixed goods merged in a controlled manner and immediately intensively together are mixed, being at any time of the Mixing process there is an option through stepless Changes e.g. the static mixer position or of the electronic chamber level responsible for the mixing chamber Level sensor in the mixing process effectively intervene.
  • stepless Changes e.g. the static mixer position or of the electronic chamber level responsible for the mixing chamber Level sensor in the mixing process effectively intervene.
  • the Combine mixing chambers very well, e.g. a Mixing chamber in the suction line under negative pressure conditions and another mixing chamber in simultaneously the pressure line of the same pump under overpressure conditions operate.
  • Each mixing unit is with a small dimension Control electronics with visual status display Execution of a fully automatic process combined.
  • the device is made essentially of two basic parts, the mixing chamber 1 with a small-sized reaction space, in which the mixed goods are brought together and mixed are, as well as one connected to the control line f electronic control and operating module a with which is a continuous and in particular a fully automatic Continuous mixing is guaranteed.
  • a Dosing lock 3 at the apex of the mixing chamber is attached, on the body of the supply connections for the mix 5, a combined vacuum pressure gauge 4 with safety valve 4/1 and the two supply connections 6, 7 are located, which are independent from each other via the flexible supply lines 6/1 and 7/1 from the respective solenoid valves 6/5 and 7/5 or via the two manual valves 6/4 and 7/4 be charged.
  • positions 6/2, 7/2 and 6/6, 7/6 are only connection fittings for the respective ventilation supply lines, wherein these are equipped with pressure gauges 6/3 and 7/3 for checking are.
  • Supply line with the integrated solenoid valve 7/5 can also use the check valve 7/7 and the Aeration unit 10 gaseous media directly into the solvent inject what is going on during the ventilation process the supply line with the integrated solenoid valve 6/5 otherwise only indirectly, via the solvent-free zone LZ, is possible.
  • the solvent is fed into the mixing chamber via the inlet 8 1 introduced, aerated by the ventilation unit 10 and by a static integrated in the bore 11 Mixer insert 12 in highly turbulent rotating ring layers added.
  • the mix is fed from the metering lock 3 coming across the solvent free zone LZ vertically from above into this turbulent solvent flow introduced, mixed and over a distributor floor 13 supplied with slots to the output 9 to the Leave mixing chamber 1 as a homogeneous mixture.
  • a level sensor 2 is arranged, the contactless through the mixing chamber wall Level of the mixing chamber 1 detected.
  • the solenoid valves 6/5, 7/5 and the electronic level sensor 2 are included the control and operating module a via the control line f electrically connected to each other.
  • the mixing chamber On the surface of the top of the control and operating module a is symbolically the mixing chamber with the respective associated aggregates shown with flashing and / or color-changing LEDs L1, L2 are the current interconnection of the mixing device identifies, in particular the solenoid valves 6/5, 7/5, the electronic level sensor 2 and the function lamp b.
  • the surface of the housing of the control and operating module a is with an electrical switch d to the friend Vent and e to switch the module on / off.
  • the control and operating module a is circuit-wise designed that an electrical connection of all shown, given electrically operated units together is. With the use of electronic components thus an automatic and controlled mixing process can be set, whereby the energy supply of the control and control module by means of the plug 10 from conventional 220 V sockets.
  • This ventilation function is only in the vacuum area provided the level in the To keep mixing chamber 1 constant. Should the liquid level rise in the reactor so far that the in a preset position adjusted electronic level sensor 2 is activated, the solenoid valve 6/5 opens interval-like and one finely dosed via the manual valve 6/4 Air volume is via the connection fittings 6/6, 6 and Dosing lock 3 fed to the mixing chamber 1 until the desired level in the reactor set and the solenoid valve 6/5 closes again.
  • Aeration medium can e.g. atmospheric Outside air are sniffed.
  • the mixes used for the mixing process are as shown in Figs. 2, 3, 4 by an externally operated Dosing unit 5/1 on the connection fitting 5 and Dosing lock 3 by the level of the Mixing chamber 1 dependent solvent-free zone LZ vertically into that generated by the static mixer part 12 turbulent solvent flow introduced.
  • the suction and pressure pump 9/1 required for conveying the finished mixture continuously draws the homogeneous mixture produced in accordance with the method from the connection fitting of the outlet 9 of the mixing chamber 1 in order to use the valve 9/2 and the flow meter / flow monitor 9/3) to be transported to the end user.
  • the underpressure that results in this method in the mixing chamber 1) 1 can be set by a pressure reducing valve (not shown) in the supply line of the inlet 8 supplying the solvent.
  • the control and operating module a is via the control line g with the actuators of the pump 9/1 and the valve 9/2, with the flow meter / flow monitor 9/3 and the Dosing unit 5/1 connected. Circuitry are involved these units interconnected so that deviations in the specified flow rate from Flow meter / flow monitor 9/3 registered and e.g. by switching off the pumps 5/1, 9/1 or closing the Valve 9/2 are corrected. With this measure an uncontrolled mixing process avoided and always one constant solution concentration ensured.
  • the operation according to the invention is shown in the device according to FIG Device in the overpressure area, e.g. in the pressure line of a suction and pressure pump 8/3 with downstream valve 8/2 and flow meter / flow monitor 8/1 shown.
  • the control and operating module a with switch d set to the "ventilate" function.
  • This ventilation function is also in the overpressure range as provided in the vacuum area Fig. 2 exclusively for the level in the mixing chamber 1 constant to keep.
  • the ventilation medium is e.g. compressed air suitable.
  • the mixes used for the mixing process are as shown in Figs. 2, 3, 4 by an externally operated Dosing unit 5/1 in the same way as in the vacuum area 2 in the solvent flow of the Mixing chamber introduced.
  • Control and operating modules a are via control line g with the actuators of the pump 8/3 and the valve 8/2 with the flow meter / flow monitor 8/1 and the dosing unit 5/1 connected. Circuitry are involved these units are also electrically interconnected as shown in Fig. 2.
  • the second ventilation line e.g. Compressed air or another gaseous medium Mixing chamber 1 supplied to aerate the solvent become.
  • the connection fitting 7/6 the solenoid valve 7/5 the manual valve 7/4 and the check valve 7/7 the gas then passes into the ventilation unit 10 to be finely divided with the solvent before the actual mixing process in the subsequent reaction space takes place.
  • the course of the reaction is determined by the speed of mass transfer. Since due to the device according to the invention the very small dimensioned reaction volume of the Mixing chamber short mixing times (seconds up to Can be realized in fractions of a second) The methods described here also in particular for gas-liquid reactions.
  • Excess gas that is not absorbed by the solvent can be removed from the mixture can be from the first ventilation line via the connection fitting 6 and the manual valve 6/4 or Solenoid valve 6/5 according to the description Fig. 1 removed become.
  • the control and Control module a) with the switch d on the function "vent" set With this process arrangement, the control and Control module a) with the switch d on the function "vent" set.
  • the mixture can also be made after leaving the exit 9 again partly the circuit of the pump 8/3 are fed. This will mix the mixture in several times the pump 8/3 circulated. This will make the mix improved.
  • each mixing chamber as an independent one Mixing module can be operated.
  • the stepless adjustment possibilities shown with its Help influence at any point in the mixing process the mixing quality can be taken. This is particularly beneficial if during adjust the mixing process changes, for example the throughput quantities, temperatures, viscosities, Relate to surface activities or the like can.
  • the representation "mixer lowered” should symbolically show that the static mixer insert 12 in the bore 11 is arranged adjustable in height.
  • the Mixer flowing around solvent flow variable Generate mixed geometries and thus according to the Mixer position different mixing energies and Mixing effects in the reaction chamber of the mixing chamber 1 contribute.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Accessories For Mixers (AREA)

Claims (10)

  1. Dispositif pour la préparation continue et le dosage en ligne de mélanges homogènes de produits gazeux, liquides ou solides difficilement miscibles, en utilisant un solvant liquide, de préférence de l'eau, constitué d'au moins une chambre de mélange de petites dimensions, travaillant dans des conditions de surpression ou de dépression, caractérisé par le fait que sont disposés à l'intérieur de la chambre de mélange (1) dans un évidement (11) du fond, qui constitue l'entrée, un élément mélangeur statique (12) réglable en hauteur, et à l'extérieur de la chambre de mélange (1), un capteur électronique de niveau de remplissage (2) réglable en hauteur.
  2. Dispositif selon la revendication 1, caractérisé par au moins une chambre de mélange (1) de petites dimensions, équipée d'un élément mélangeur statique (12) réglable en hauteur, d'un fond de distribution (13), d'une unité d'aération (10) et d'un capteur électronique de niveau de remplissage (2) réglable en hauteur, relié par le câble de commande (f) à un module de contrôle et de commande (8) ; sur la partie supérieure transparente de cette chambre de mélange est monté un doseur rotatif (3), sur lequel se trouve un manomètre de pression/dépression combiné (4) avec clapet de sécurité (4/1) ainsi que la robinetterie de raccordement (5) pour le produit à mélanger, la robinetterie de raccordement (6) pour la première ligne d'aération et/ou de désaération, composée du tuyau d'alimentation flexible (6/1), de la robinetterie de raccordement (6/2) avec manomètre (6/3), de la vanne de dosage (6/4), de l'électrovanne (6/5) et de la robinetterie de raccordement (6/6), la deuxième ligne d'aération et/ou de désaération étant composée de la robinetterie de raccordement (7) avec le tuyau d'alimentation flexible (7/1), la robinetterie de raccordement (7/2) avec le manomètre (7/3), la vanne de dosage (7/4), l'électrovanne (7/5), la robinetterie de raccordement (7/6) et le clapet antiretour (7/7) pour la liaison avec l'unité d'aération (10) qui se trouve dans la partie inférieure de la chambre de mélange (1) pour l'introduction du fluide d'aération à contre-courant dans le solvant introduit par l'entrée (8), de sorte qu'en fonctionnement le solvant enrichi par le fluide d'aération passe ensuite par l'élément mélangeur statique (12) à travers l'évidement (11) et, après le mélange avec le produit à mélanger arrivant verticalement du doseur rotatif (3) par une zone exempte de solvant (LZ), quitte la chambre de mélange (1) sous forme de solution homogène par le fond de distribution (13), pourvu de rainures découpées, et la sortie (9).
  3. Dispositif selon la revendication 2, caractérisé par le fait que la partie supérieure de la chambre de mélange (1) est réalisée dans un matériau résistant aux chocs et transparent et que la chambre de mélange est limitée dans sa forme de réalisation la plus petite à un volume total d'environ 1 litre.
  4. Dispositif selon les revendications 2 et 3, caractérisé par le fait que la console de guidage supportant le capteur (2) est solidaire de la paroi extérieure de la chambre de mélange (1), le capteur (2) étant muni d'une plaque de base sur laquelle se trouve une diode électroluminescente pour l'éclairage de la chambre de mélange (1), le capteur électronique de niveau de remplissage (2) étant relié au module de contrôle et de commande (a) par la ligne de commande (f).
  5. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé par le fait que l'élément mélangeur statique (12) réglable en hauteur est placé au centre de la face inférieure de la chambre de mélange (1) dans un évidement (11).
  6. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé par le fait que le module de contrôle et de commande (a) est également relié électriquement par la ligne de commande (g) à des accessoires externes, comme par exemple le doseur de produit à mélanger (5/1), la pompe aspirante et refoulante (9/1), les vannes (9/2) ou le contrôleur de débit (9/3) ainsi que la pompe aspirante et refoulante (8/3), la vanne (8/2), le débitmètre/contrôleur de débit (8/1).
  7. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé par le fait que le module de contrôle et de commande (a) représente symboliquement la chambre de mélange avec ses accessoires associés, munis de diodes électroluminescentes (L1, L2) clignotantes et/ou de couleur variable qui identifient la connexion actuelle du dispositif de mélange, en particulier des électrovannes (6/5, 7/5), du capteur électronique de niveau de remplissage (2), du témoin de fonctionnement (b) et du doseur de produit à mélanger (5/1) et/ou des vannes (8/2, 9/2), et qu'un commutateur électrique (d) pour aérer et désaérer et un commutateur électrique (e) pour mettre en marche et arrêter le module sont disposés sur la surface mentionnée du boítier.
  8. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé par le fait que les circuits du module de contrôle et de commande sont conçus de manière à assurer une interconnexion électrique de tous les accessoires à commande électrique représentés et à rendre ainsi réglable, par l'emploi de composants électroniques, un processus de mélange continu automatique, l'alimentation électrique du module de contrôle et de commande étant réalisée à partir de prises 220 V standard au moyen de la fiche (c).
  9. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé par le fait que la chambre de mélange (1) exploitée dans des conditions de dépression (vide) est munie d'une vanne (9/2) placée en aval dans la conduite d'aspiration d'une pompe aspirante et refoulante (9/1) et d'un débitmètre/contrôleur de débit (9/3), une deuxième chambre de mélange (1") étant ensuite, le cas échéant, exploitée dans des conditions de surpression dans la conduite de refoulement de la même pompe aspirante et refoulante (9/1), avec vanne (9/2) placée en aval et débitmètre/contrôleur de débit (9/3).
  10. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé par le fait que la chambre de mélange (1) exploitée dans des conditions de surpression est munie d'une conduite de refoulement, d'une pompe aspirante et refoulante (8/3) avec vanne (8/2) placée en aval et d'un débitmètre/contrôleur de débit (8/1).
EP99102503A 1998-02-19 1999-02-10 Procédé et dispositif pour la préparation d'un mélange homogéne à action continue Expired - Lifetime EP0945168B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19806934A DE19806934A1 (de) 1998-02-19 1998-02-19 Verfahren und Vorrichtung zur kontinuierlichen Herstellung homogener Mischungen
DE19806934 1998-02-19

Publications (2)

Publication Number Publication Date
EP0945168A1 EP0945168A1 (fr) 1999-09-29
EP0945168B1 true EP0945168B1 (fr) 2003-07-02

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EP99102503A Expired - Lifetime EP0945168B1 (fr) 1998-02-19 1999-02-10 Procédé et dispositif pour la préparation d'un mélange homogéne à action continue

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EP (1) EP0945168B1 (fr)
AT (1) ATE244056T1 (fr)
DE (2) DE19806934A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014001574B4 (de) * 2014-02-05 2017-07-27 Gea Tds Gmbh Verfahren und Vorrichtung zur kontinuierlichen Dosierung von wenigstens einer festkörperartigen, kleinstückigen Beimengung in eine Trägerflüssigkeit
CN112892390B (zh) * 2021-01-28 2022-07-15 江西省奋发粘胶化工有限公司 一种硅酮胶用智能化调色设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE927685C (de) * 1950-12-28 1955-05-16 Paul Vollrath Maschinenfabrik Mischvorrichtung fuer Fluessigkeiten mit pulvrigen oder koernigen Stoffen
DE3222209C2 (de) * 1982-06-12 1984-06-07 Allied Colloids Manufacturing GmbH, 2000 Hamburg Verfahren und Vorrichtung zur kontinuierlichen Herstellung einer Mischung aus zwei schwer mischbaren Komponenten, vorzugsweise aus Wasser und einer Polyacrylamid-Suspension

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EP0945168A1 (fr) 1999-09-29
ATE244056T1 (de) 2003-07-15
DE19806934A1 (de) 1999-09-30
DE59906142D1 (de) 2003-08-07

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