EP0182110B1 - Dispositif de production d'une émulsion stable pour l'utilisation dans les appareils d'épuration et de décontamination - Google Patents

Dispositif de production d'une émulsion stable pour l'utilisation dans les appareils d'épuration et de décontamination Download PDF

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Publication number
EP0182110B1
EP0182110B1 EP85113281A EP85113281A EP0182110B1 EP 0182110 B1 EP0182110 B1 EP 0182110B1 EP 85113281 A EP85113281 A EP 85113281A EP 85113281 A EP85113281 A EP 85113281A EP 0182110 B1 EP0182110 B1 EP 0182110B1
Authority
EP
European Patent Office
Prior art keywords
container
emulsion
water
emulsifier
stirring element
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
EP85113281A
Other languages
German (de)
English (en)
Other versions
EP0182110A2 (fr
EP0182110A3 (en
Inventor
Dieter Dipl.-Ing. Endtner
Roland Dipl.-Ing. Schick (Fh)
Helmut Dipl.-Ing. Stelzmüller (FH)
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Priority to AT85113281T priority Critical patent/ATE49512T1/de
Publication of EP0182110A2 publication Critical patent/EP0182110A2/fr
Publication of EP0182110A3 publication Critical patent/EP0182110A3/de
Application granted granted Critical
Publication of EP0182110B1 publication Critical patent/EP0182110B1/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
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/43—Mixing liquids with liquids; Emulsifying using driven stirrers
    • 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
    • B01F23/41—Emulsifying
    • 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
    • B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/808—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers driven from the bottom of the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • 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
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32—Driving arrangements
    • B01F35/321—Disposition of the drive
    • B01F35/3213—Disposition of the drive at the lower side of the axis, e.g. driving the stirrer from the bottom of a receptacle

Definitions

  • the invention relates to a device for producing a stable emulsion for use in cleaning and detoxification devices, which contains solids suspended in water, a solvent and an emulsifier.
  • a supply line for the solvent and the emulsifier which have a greater specific weight than water, is provided in a vessel with a circular cross section at the bottom, that a supply line is provided above this supply line
  • a feed for the solids slurried with water opens into the container, that means are provided which set the contents of the container in rotation about the longitudinal axis of the container, that the container is surrounded by a collecting space which receives the emulsion overflowing over the upper edge of the container, from which an outlet for the finished emulsion emerges, and that the feed for the solids slurried with water opens into the container at several points at different heights.
  • a device with similar features is known per se from LU-A-82 828, but this known device is used for mixing solids into a liquid, for example for producing a suspension, but not for producing a stable emulsion. Furthermore, this known device lacks the important feature that the substances to be supplied, in this case the solids suspended in water, are supplied at different levels. It is precisely this feature that is extremely important in the context of the present invention for producing a stable emulsion, because this feature means that the concentration of the slurry at the start of emulsion formation is significantly lower than the concentration in the finished emulsion. This means that the emulsion can be formed in the desired manner. It is only gradually that the concentration of the aqueous slurry in the emulsion increases, to the extent that the liquid in the container moves upward.
  • the emulsion is formed in the container by introducing the specifically lighter component (solid suspended in water) into the more heavily component (solvent and emulsifier) introduced into the container from below.
  • the liquid inside the container is rotated so that the aqueous slurry of the solid is introduced into a moving liquid from top to bottom.
  • the concentration of the aqueous slurry in the solvent and emulsifier is lower than in the finished emulsion; this promotes emulsion formation, particularly in this area of the most intensive mixing.
  • the emulsion formed in the container enters the collecting space via the upper edge of the container and is calmed and stabilized there, so that a stable emulsion can finally emerge from this collecting space.
  • the device works continuously and produces the desired emulsion in a surprisingly short time.
  • the device which rotates the contents of the container is a stirring element which is rotatable on the bottom of the container about the longitudinal axis of the container.
  • This can be designed as a flat disk, and it is advantageous if the stirring element is held on a drive shaft which penetrates the bottom of the container in a sealed manner.
  • the feed for the solids suspended in water is formed by a tube which concentrically enters the container from above and has outlet openings on its front side and at different heights in its jacket. This tube preferably ends approximately halfway up the container.
  • a vent line which can be closed by means of a floating body branches off from the tube, so that air entrained by the aqueous slurry can escape from the tube and from the container.
  • the supply for the solids suspended in water can be formed by pipelines which open into the side wall of the container and which open out at different heights.
  • the junction can be radial, in a modified embodiment it is also possible for the pipes to flow into the container tangentially and in the same direction of rotation.
  • a driven stirring element can be recorded under certain circumstances if the tangentially introduced aqueous slurry is introduced to such an extent that the liquid in the container alone is sufficiently rotated as a result.
  • vent line which ventilates the container and can be closed with a float body is provided.
  • the collecting space can protrude from the top of the container, so that the liquid rising due to the rotation on the container wall enters the collecting space via the container edge.
  • the liquid level which arises in this case has a substantially parabolic cross section in the lower region, while the liquid in the upper region runs much flatter, since the rotation of the liquid from the container is only transferred to the collecting space to a limited extent.
  • the outlet is arranged in the area of the underside of the collecting space, since the emulsion is particularly stable and calm in this area.
  • the underside of the collecting space can be arranged between the bottom of the container and approximately 2/3 of the container height.
  • the container is cylindrical, but it is also advantageous if the side walls of the container are parabolic.
  • a swirl chamber can be connected to the outlet, which leads to an additional homogeneous mixing of the emulsion.
  • the emulsion produced in the device described below contains water, a solvent, e.g. Chlorine-containing, aliphatic and aromatic hydrocarbons, an emulsifier which acts as a phase transfer catalyst, and a solid which consists of active chlorine-containing compounds, i.e. Compounds which are capable of splitting off chlorine and hypochlorite with water with hydrolysis, such as, for. As calcium hypochlorite, chlorinated lime or alkali hypochlorite.
  • Such emulsions are used for cleaning and disinfection and are sprayed for this purpose using a high-pressure jet device.
  • an aqueous slurry is first prepared in a conventional manner by mixing water and the powdery or granular solids, which is then mixed in the device described below with a liquid chemical which contains solvent and emulsifier and is specifically heavier than water.
  • the first embodiment of a device for emulsion formation shown in FIG. 1 comprises a circular cylindrical container 1 with a flat bottom 2, through which a drive shaft 3 is sealed and concentrically guided and which carries a disk-shaped stirring element 4 at its end lying inside the container.
  • a feed line 5 enters through the bottom 2 into the interior of the container 1, the outlet point being below the disk-shaped stirring element 4.
  • solvent and emulsifier can be introduced into the container from a storage container for solvent and emulsifier by means of a feed pump in a manner not shown, the inflow quantity being adjustable by a metering valve, also not shown in the drawing.
  • the upper part of the container 1 is surrounded by a likewise circular cylindrical collecting space 6, the outer diameter of which is larger than that of the container 1 and the underside 7 of which is arranged approximately in the upper third of the container 1.
  • the collecting space 6 is closed by means of a cover 8, the closed upper side of the collecting space 6 projecting substantially beyond the upper edge 9 of the container, for example the upper edge 9 can end approximately halfway up the collecting space 6.
  • the collecting space 6 In the vicinity of the underside 7, the collecting space 6 has a radially emerging outlet 10.
  • a tube 11 is introduced through the cover 8 of the collecting space 6 concentrically to the container into the collecting space 6 and the container 1, the free end 12 of which ends approximately halfway up the container 1.
  • This tube 11 has in its end face 13 an outlet opening 14 and further outlet openings 15 in its side wall 16, the outlet openings 15 being arranged at different heights in the side wall; There are no outlet openings above the upper edge 9 of the container 1 15 in the side wall.
  • the aqueous slurry can be introduced into the container from a slurry device, not shown in the drawing.
  • an upwardly emerging ventilation line 17 also emerges through the cover 8 with a conically narrowing region 18, in which there is a float 19 which is conical on the top and which, together with the conical region 18, closes the ventilation line 17 when the floating body floats in the liquid. However, it releases the ventilation line 17 when there is air in the ventilation line 17 so that it can escape to the outside.
  • the liquid inside the container and to a lesser extent inside the collecting space is set in rotation about the longitudinal axis of the container by the stirring element 4, so that an essentially parabolic liquid level is formed in the container, which is increasingly flatter in the collecting space runs.
  • Solvent and emulsifier are introduced into the container from below, and the aqueous slurry through tube 11 from above. A substantial part of the aqueous slurry enters through the front exit opening 14 directly into the area above the stirring element 4, in which particularly intensive mixing takes place, as indicated by the arrows A in FIG. In this area, the concentration of the aqueous slurry is low, which promotes emulsion formation.
  • the emulsion formed is driven upwards along the container walls, further aqueous slurry entering the emulsion through the side openings 15 in the tube 11 and being emulsified.
  • the emulsion has reached the desired composition, thorough and uniform mixing having taken place, since the aqueous slurry is introduced from the stationary tube into the emulsion rotating rapidly around the tube.
  • the emulsion calms down and stabilizes, which is then finally discharged through the outlet 10, if necessary, in the drawing Swirl chamber, not shown, can be supplied for their final use.
  • the emulsion is subsequently stabilized in the swirl chamber, which can be equipped with baffles.
  • the concentration of the slurry at the beginning of the emulsion formation is substantially lower than the concentration in the finished emulsion, and this means that the emulsion formation can take place in the desired manner. It is only gradually that the concentration of the aqueous slurry in the emulsion increases, to the extent that the liquid in the container moves upward.
  • the container 1 is not circular cylindrical, but the wall of the container 1 has a parabola-shaped course, the parabola being cut off at the lower end by the flat bottom 2.
  • the collecting space 6 completely surrounds the container 1, so that the underside 7 of the collecting space 6 lies in one plane with the bottom 2 of the container 1.
  • the introduction of the aqueous slurry does not take place via a concentrically introduced pipe, but rather via a plurality of feed lines 20 which radially penetrate the collecting space 6 and open into the wall of the container 1 and are arranged at different heights.
  • the aqueous slurry is first introduced via deep-lying feed lines into the space above the stirring element 4, in which the concentration of the aqueous slurry is substantially lower than the final concentration in the finished emulsion.
  • additional aqueous slurry is subsequently introduced through higher-level feed lines until the final concentration is finally reached.
  • a vent line 17a is provided, which in this case does not branch off from the feed line for the aqueous slurry, but is held on the cover 8.
  • the feed line has a conically narrowing region 18a and surrounds a floating body 19a which can close the vent line in the region of the conically narrowing region.
  • the feed lines 20 are not introduced radially into the container, but tangentially, namely in a uniform direction of rotation, so that the liquid in the interior of the container is set in rotation by the aqueous slurry introduced. This makes it possible to dispense with a stirring element in the container. Otherwise, the emulsion is formed in the same way as in the exemplary embodiment in FIG. 2.
  • the inside of the container and the collecting space is under excess pressure, ie the two are inside Components fed into the room are fed under pressure.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Detergent Compositions (AREA)

Claims (18)

1. Dispositif pour la production d'une émulsion stable destinée à être utilisée dans des appareils de nettoyage et de décontamination, qui contient des matières solides mises en suspension avec de l'eau, un solvant et un émulsifiant, dans lequel, dans un récipient (1) à section circulaire, une conduite d'arrivée pour le solvant et l'émulsifiant, qui possèdent un poids spécifique supérieur à celui de l'eau, est prévue au niveau du fond (2), une arrivée (tube 11; conduite d'arrivée 20) acheminant les matières solides mises en suspension avec de l'eau débouche dans le récipient (1) au-dessus de cette conduite d'arrivée (5), il est prévu des organes (élément agitateur 4; conduites d'arrivée tangentielles 20) qui mettent le contenu du récipient (1) en rotation autour de l'axe longitudinal du récipient (1), le récipient (1) est entouré d'une chambre collectrice (6) qui reçoit l'émulsion qui se déverse par dessus le bord supérieur (9) du récipient (1), et d'où part une sortie (10) pour l'émulsion finie, et l'arrivée (11; 20) acheminant les matières solides mises en suspension avec l'eau débouche dans le récipient (1) en plusieurs points de ce récipient (1), à différents niveaux et au-dessous du bord supérieur (9) de ce récipient.
2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif qui met le contenu du récipient (1) en rotation est un élément agitateur (4) qui peut tourner autour de l'axe longitudinal du récipient (1), au niveau du fond (2) du récipient (1 ).
3. Dispositif selon la revendication 2, caractérisé en ce que l'élément agitateur (4) est un disque plat.
4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que l'élément agitateur (4) est monté sur un arbre d'entraînement (3) qui traverse le fond (2) du récipient (1) à joint étanche.
5. Dispositif selon une quelconque des revendications 2 à 4, caractérisé en ce que la conduite d'arrivée (5) qui amène le solvant et l'émulsifiant débouche dans le récipient (1) au-dessous de l'élément agitateur (4).
6. Dispositif selon une des revendications 2 à 5, caractérisé en ce que l'arrivée des matières solides mises en suspension dans l'eau est formée par un tube (11) qui pénètre concentriquement dans le récipient (1) par le haut, qui présente des ouvertures de sortie (14 et 15 respectivement) dans sa face frontale (13) et à dif-férents niveaux dans sa paroi cylindrique (paroi latérale 16).
7. Dispositif selon la revendication 6, caractérisé en ce que le tube (11) se termine à peu près à mi-hauteur du récipient (1 ).
8. Dispositif selon la revendication 6 ou 7, caractérisé en ce que, sur le tube (11), est piquée une conduite d'échappement d'air (17) qui peut être obturée au moyen d'un flotteur (19).
9. Dispositif selon une des revendications 1 à 5, caractérisé en ce que l'arrivée des matières solides mises en suspension dans l'eau est formée par des conduites d'arrivée (20) qui débouchent dans la paroi latérale du récipient (1 ).
10. Dispositif selon la revendication 9, caractérisé en ce que les conduites d'arrivée (20) débouchent radialement.
11. Dispositif selon la revendication 9, caractérisé en ce que les conduites d'arrivée (20) débouchent tangentiellement dans le récipient (1), toutes dans le même sens de rotation.
12. Dispositif selon une des revendications 1 à 7 ou 9 à 11, caractérisé en ce qu'il est prévu une conduite d'échappement d'air (17a), servant à dégaser le récipient (1), et qui peut être obturée au moyen d'un flotteur (19a).
13. Dispositif selon une des revendications précédentes, caractérisé en ce que la chambre collectrice (6) déborde au-delà du récipient (1) dans sa partie supérieure.
14. Dispositif selon une des revendications précédentes, caractérisé en ce que la sortie (10) est agencée dans la région de la face inférieure (7) de la chambre collectrice (6).
15. Dispositif selon la revendication 14, caractérisé en ce que la face inférieure (7) de la chambre collectrice (6) est placée entre le fond (2) du récipient (1) et un point situé à peu près au 2/3 de la hauteur du récipient.
16. Dispositif selon une des revendications précédentes, caractérisé en ce que le récipient (1) est de configuration cylindrique.
17. Dispositif selon une quelconque des revendications 1 à 16, caractérisé en ce que les parois latérales du récipient (1) ont un profil parabolique.
18. Dispositif selon une des revendications précédentes, caractérisé en ce qu'une chambre de turbulence se raccorde à la sortie (10).
EP85113281A 1984-11-14 1985-10-19 Dispositif de production d'une émulsion stable pour l'utilisation dans les appareils d'épuration et de décontamination Expired - Lifetime EP0182110B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85113281T ATE49512T1 (de) 1984-11-14 1985-10-19 Vorrichtung zum erzeugen einer stabilen emulsion zur verwendung in reinigungs- und entgiftungsgeraeten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3441529 1984-11-14
DE19843441529 DE3441529A1 (de) 1984-11-14 1984-11-14 Vorrichtung zum erzeugen einer stabilen emulsion zur verwendung in reinigungs- und entgiftungsgeraeten

Publications (3)

Publication Number Publication Date
EP0182110A2 EP0182110A2 (fr) 1986-05-28
EP0182110A3 EP0182110A3 (en) 1987-05-06
EP0182110B1 true EP0182110B1 (fr) 1990-01-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113281A Expired - Lifetime EP0182110B1 (fr) 1984-11-14 1985-10-19 Dispositif de production d'une émulsion stable pour l'utilisation dans les appareils d'épuration et de décontamination

Country Status (4)

Country Link
US (1) US4750843A (fr)
EP (1) EP0182110B1 (fr)
AT (1) ATE49512T1 (fr)
DE (2) DE3441529A1 (fr)

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CZ277748B6 (en) * 1987-09-03 1993-04-14 Matra Werke Gmbh Apparatus for the continuous production of a liquid mixture of solid or liquid substances
US5403092A (en) * 1994-02-01 1995-04-04 Eastman Kodak Company Viscous shear mixing device and method
US6019499A (en) * 1995-04-18 2000-02-01 Advanced Molecular Technologies, Llc Method of conditioning hydrocarbon liquids and an apparatus for carrying out the method
JPH11503818A (ja) 1995-04-18 1999-03-30 アドバンスト・モレキュラー・テクノロジーズ・リミテッド・ライアビリティ・カンパニー 流体加熱方法および同方法を実施するための装置
US5599101A (en) * 1995-09-01 1997-02-04 Pardikes; Dennis G. Dry polymer processing system
US7384183B2 (en) * 2002-09-06 2008-06-10 Global Ground Support, Llc Mobile decontamination unit
CN101879045A (zh) * 2006-04-03 2010-11-10 玛美得股份有限公司 油炸机
US20090268547A1 (en) * 2008-04-14 2009-10-29 Norchem Industries Devices, systems and methods for dry powder processing
JP4798174B2 (ja) * 2008-05-21 2011-10-19 株式会社日立プラントテクノロジー 乳化装置
RU2404466C1 (ru) * 2009-08-18 2010-11-20 Федеральное государственное унитарное предприятие "Горно-химический комбинат" Перемешивающее устройство кольцевого аппарата
RU2446494C2 (ru) * 2010-04-30 2012-03-27 Федеральное государственное унитарное предприятие "Горно-химический комбинат" Пульсационное перемешивающее устройство кольцевого аппарата
CN111790311B (zh) * 2020-07-21 2022-04-19 浙江佳润新材料有限公司 一种纺织品用乳液的生产方法

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DE1085851B (de) * 1955-02-28 1960-07-28 Bayer Ag Vorrichtung zur Herstellung von Loesungen aus pulverfoermigen, insbesondere Stoffen mit niedrigem Schuettgewicht
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Also Published As

Publication number Publication date
EP0182110A2 (fr) 1986-05-28
DE3441529A1 (de) 1986-05-22
US4750843A (en) 1988-06-14
DE3575381D1 (de) 1990-02-22
ATE49512T1 (de) 1990-02-15
EP0182110A3 (en) 1987-05-06

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