EP1186348B1 - Method and device for spraying liquids - Google Patents

Method and device for spraying liquids Download PDF

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Publication number
EP1186348B1
EP1186348B1 EP01121120A EP01121120A EP1186348B1 EP 1186348 B1 EP1186348 B1 EP 1186348B1 EP 01121120 A EP01121120 A EP 01121120A EP 01121120 A EP01121120 A EP 01121120A EP 1186348 B1 EP1186348 B1 EP 1186348B1
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EP
European Patent Office
Prior art keywords
hollow cylinder
range
liquid
cylinder
atomized
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.)
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EP01121120A
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German (de)
French (fr)
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EP1186348A1 (en
Inventor
Markus Nowotny
Guido Schaer
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DSM IP Assets BV
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DSM IP Assets BV
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Priority to DK01121120T priority Critical patent/DK1186348T3/en
Priority to EP01121120A priority patent/EP1186348B1/en
Publication of EP1186348A1 publication Critical patent/EP1186348A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1007—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member
    • B05B3/1021—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with individual passages at its periphery

Definitions

  • the invention further relates to methods for sputtering, for spray cooling and for spray-drying a liquid using a Device of the type mentioned above.
  • the invention further relates to the use of a device of the above mentioned type for the production of powders from solutions or dispersions, and preferably from emulsions.
  • the invention is fundamentally based on the object, a device of the kind specified above, with which a close Drop size distribution is achievable, the average drop size when sprayed in a range of 50 to 500 microns, and preferably should be in a range of 100 to 350 microns.
  • the invention also the object of a device of the above To provide type, with which technically desired throughputs can be achieved in the atomization of the liquid, and which thereby should work wear-resistant.
  • the structure and dimensions of the Hollow cylinder and the round hole nozzles in the cylindrical wall to are chosen so that a uniform distribution of the liquid and the Temperature of this liquid in the hollow cylinder and in the just mentioned round hole nozzles is achieved, and that the round hole nozzles a have low tendency to clog.
  • the should Hollow cylinder easy to assemble and dismantle, and the hollow cylinder as well as the round hole nozzles should be easy to clean.
  • the invention is also the object of the method for Sputtering, for spray cooling or spray drying of a liquid to provide with a device according to the invention.
  • liquid is intended to mean solutions, in particular aqueous solutions, Dispersions and emulsions of active ingredients, as well as melts, e.g. Fat melts that may contain an active ingredient include.
  • active ingredients are fat-soluble vitamins, such as vitamins A, E, D and K; Carotenoids, such as ⁇ -carotene, zeaxanthin, lutein and astaxanthin, and fat-soluble pharmaceutical agents; but also water-soluble Pharmaceutical agents and vitamins, such as vitamin C and the Vitamins of the B group.
  • the hollow cylinder is on a screwed with co-rotating hollow shaft, which is used to feed the atomizing liquid in the hollow cylinder is used.
  • the hollow cylinder can therefore be mounted and removed with little effort, which reduces the time spent on maintenance work. Through this and through the very simple structure and the small wall thickness of the hollow cylinder the hollow cylinder and the round hole nozzles are easy to clean.
  • the device related part of the above-mentioned object is according to the invention also with a device of the type specified above solved, which has the features defined in claim 12 features.
  • the latter means may e.g. a co-rotating hollow shaft 19th include, which is also rotatable by the drive 12 and which on the one hand e.g. via a pump with a source of liquid to be atomized, on the other hand connected to the hollow cylinder 11 and 21, respectively.
  • the hollow cylinder 11 or 21 can be made of all for the here described Purpose of machinable materials, e.g. out a metal, such as steel or alloy steel, or a plastic, such as Polyvinyl chloride or polyethylene.
  • the drive 12 makes it possible to the hollow cylinder 11 at a speed rotate in a range between 2000 and 20,000 revolutions per Minute and preferably between 3000 and 10000 revolutions per Minute is.
  • a first embodiment of an inventive device has the The above-described basic structure according to FIG. 1 and contains a Hollow cylinder 11 according to FIGS 2-4.
  • the hollow cylinder 11 is at its lower end closed with a bottom 13 and has at its upper end a Opening 15.
  • the Cylinder jacket 16 of the hollow cylinder 11 a plurality of round hole nozzles 18 for dispensing the liquid to be atomized.
  • the hollow cylinder 11 is at its upper side with the co-rotating Hollow shaft 19 separably connected, through which a liquid in the Hollow cylinder 11 through the opening 15 can be inserted.
  • the hollow cylinder 11th is preferably screwed onto the co-rotating hollow shaft 19. This has the advantage that the hollow cylinder 11 mounted without special tool or is removable.
  • the hollow cylinder 11 has a diameter which between 10 and 25 millimeters.
  • the surface of the cylinder jacket 16, which has the round hole nozzles 18, extends in the axial direction over a length which is between 20 and 120 Millimeters lies.
  • Each of the round hole nozzles 18 in the shell 16 of the hollow cylinder 11 has a Hole diameter ranging between 0.05 and 1 millimeter, preferably between 0.1 and 0.4 millimeters.
  • Each of the Round hole nozzles 18 in the shell 16 of the hollow cylinder 11 has a relationship Length / hole diameter ranging between 1 and 50, preferably between 2 and 10.
  • the hollow cylinder 11 is through suitable choice of the viscosity of the liquid to be atomized, Throughput of the liquid to be atomized, the speed and the Diameter of the hollow cylinder 11 a laminar yarn decay and thus a narrow droplet size distribution when Zertropfen achieved, the average droplet size when sprayed between 50 and 500 Micrometer and preferably between 100 and 350 microns.
  • An embodiment of the device according to the invention has the above described basic structure according to FIG. 1, but contains instead of the Hollow cylinder 11 according to the figures 1-3 an arrangement according to the 5-9, which arrangement a rotatable hollow cylinder 21 for Contains the intake of the liquid to be atomized and an inlet pipe 31, which is rotatable with the hollow cylinder 21 and through which the atomizing liquid in the hollow cylinder 21 is inserted.
  • the hollow cylinder 21 is at its lower end closed with a bottom 23 and has at its upper end a Opening 25.
  • the Mantle 26 of the hollow cylinder 11 a plurality of round hole nozzles 28 for Dispensing of the liquid to be atomized.
  • the hollow cylinder 21 is at its upper end with the co-rotating Hollow shaft 19 separably connected, through which a liquid in the Hollow cylinder 21 is inserted through the opening 25.
  • the hollow cylinder 21st is preferably screwed onto the co-rotating hollow shaft 19. This has the advantage that the hollow cylinder 21 mounted without special tool or is removable.
  • the hollow cylinder 21 has a diameter which suitably between 10 and 60 millimeters, and preferably between 20 and 40 millimeters, lies.
  • the surface of the cylinder jacket 26, which has the round hole nozzles 28, extends in the axial direction over a length that expediently between 120 and 400 millimeters, and preferably between 120 and 250 Millimeters lies.
  • Each of the round hole nozzles 28 in the shell 26 of the hollow cylinder 21 has a Hole diameter reasonably between 0.05 and 1 mm and preferably between 0.1 and 0.4 millimeters.
  • Each of the Round hole nozzles 28 in the shell 26 of the hollow cylinder 21 has a relationship Length / hole diameter between 1 and 50 and preferably between 2 and 10 lies.
  • the inlet pipe 31 is arranged in the cylinder 21 so that the longitudinal axis 34 of the inlet pipe 31 with the axis of rotation 27 of the hollow cylinder 21st coincides.
  • the inlet 32 of the inlet pipe 31 is connected to the opening 25 of the Hollow cylinder 21 and thereby with the source of the atomized Fluid connected.
  • the output 33 of the inlet pipe 31 is in the interior of the hollow cylinder 21 and arranged in its end region, in which the bottom of the hollow cylinder lies.
  • the outlet 33 of the inlet pipe 31 is the inside of the cylinder wall 26 facing, wherein the distance between this output 33 and the Inside the cylinder bottom 23 much smaller than the distance between this output 33 and the opening 25 of the hollow cylinder 21 is.
  • the distance between the outlet 33 of the inlet pipe 31 and the Inside the cylinder bottom 23 is preferably between 1 and 20 Millimeter.
  • the cylindrical side wall 35 of the inlet pipe 31 except the above-mentioned output 33 more Openings on, with all these openings in the axial direction between its input 32 and its output 33 are arranged.
  • the device according to the invention described above feasible Zerstäubungsart can be used for the production of large-scale Powders of solutions, dispersions, or preferably emulsions, and Melting be applied.
  • FIG. 10 An example of the apparatus required for this purpose is shown schematically in FIG. 10.
  • This structure includes a stacking container 41, a feed pump 42, a filter 43, a temperature-conditioned delivery line 44, a spray container 45, a spray 46, a product discharge line 47, and possibly a supply line 48 for necessary auxiliaries such as silica, starch, cold / warm air or others aids.
  • the mesh size of the filter 43 is a function of the hole diameter the round hole nozzles 18 and 28 selected.
  • hole diameter in one Range between 0.05 and 1 millimeter is e.g. a filter 43 with a Mesh size selected in a range between 50 and 1000 microns.
  • hole diameters in a range between 0.1 and 0.4 millimeters is preferably a filter 43 with a mesh size in a range between 100 and 400 microns.
  • aqueous drug e.g., vitamin E
  • emulsion is placed in the stack container 41 stored at 60 ° C.
  • the feed pump 42 is the emulsion, with a dry substance from about 45-50%, through the filter 43, with a typical mesh size 100-300 microns, promoted to the spray 46.
  • the emulsion in the Spray container 45 atomized.
  • the ambient temperature in the spray container 45 is 20 ° C.
  • the required auxiliary substances 8 in the Spray container 45 dosed.

Landscapes

  • Nozzles (AREA)
  • Glanulating (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Colloid Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The equipment for atomizing fluids contains a rotatable hollow cylinder (21) for accommodation of fluid to be atomized and a drive for rotating the cylinder. The cylinder cover has aa number of round hole nozzles. The cylinder is closed at its lower end and at its upper end has an aperture (25) for input of fluid to be atomized. If required, the cylinder can have an inlet tube (31) for the fluid, which is rotatable with the cylinder. The longitudinal axis of the tube coincides with the rotary axis of the cylinder. The end of the tube (36) is close to the tube base.

Description

Die Erfindung betrifft eine Vorrichtung zum Zerstäuben von Flüssigkeiten, welche Vorrichtung

  • einen drehbaren Hohlzylinder zur Aufnahme der zu zerstäubenden Flüssigkeit, und
  • einen Antrieb zum Rotieren des Hohlzylinders enthält,
wobei der Hohlzylinder an seinem unteren Ende mit einem Boden verschlossen ist und an seinem oberen Ende eine Öffnung hat, und dessen Mantel eine Vielzahl von Rundlochdüsen zur Abgabe der zu zerstäubenden Flüssigkeit aufweist.The invention relates to a device for atomizing liquids, which device
  • a rotatable hollow cylinder for receiving the liquid to be atomized, and
  • includes a drive for rotating the hollow cylinder,
wherein the hollow cylinder is closed at its lower end with a bottom and at its upper end has an opening, and whose jacket has a plurality of round hole nozzles for discharging the liquid to be atomized.

Eine derartige Vorrichtung ist aus US 3241948 bekannt.Such a device is known from US 3241948.

Die Erfindung betrifft ferner Verfahren zum Zerstäuben, zur Sprühkühlung und zur Sprühtrocknung einer Flüssigkeit unter Verwendung einer Vorrichtung der oben erwähnten Art.The invention further relates to methods for sputtering, for spray cooling and for spray-drying a liquid using a Device of the type mentioned above.

Die Erfindung betrifft ferner die Verwendung einer Vorrichtung der oben erwähnten Art zur Erzeugung von Pulvern aus Lösungen oder Dispersionen, und vorzugsweise aus Emulsionen.The invention further relates to the use of a device of the above mentioned type for the production of powders from solutions or dispersions, and preferably from emulsions.

Eine Vorrichtung der oben erwähnten Art ist auch in der Veröffentlichung von P. Schmid "Auslegung rotierender poröser Zerstäubungskörper", Verfahrenstechnik 8 (1974) Nr. 7, beschrieben. Diese Veröffentlichung enthält eine prinzipielle Beschreibung der Benutzung eines Hohlzylinders mit einer Vielzahl von Rundlochdüsen. A device of the type mentioned above is also in the publication of P. Schmid "Design of Rotating Porous Sputtering Body", Process Engineering 8 (1974) No. 7, described. This publication contains a basic description of the use of a hollow cylinder with a variety of round hole nozzles.

Der Erfindung liegt grundsätzlich die Aufgabe zugrunde, eine Vorrichtung der oben angegebenen Art zur Verfügung zu stellen, mit der eine enge Tropfengrössenverteilung erzielbar ist, wobei die mittlere Tropfengrösse bei der Versprühung in einem Bereich von 50 bis 500 Mikrometer, und vorzugsweise in einem Bereich von 100 bis 350 Mikrometer liegen sollte. Im Rahmen dieser grundsätzlichen Aufgabenstellung liegt der Erfindung ausserdem die Aufgabe zugrunde, eine Vorrichtung der oben angegebenen Art zur Verfügung zu stellen, mit welcher technisch erwünschte Durchsätze bei der Zerstäubung der Flüssigkeit zu erzielen sind, und welche dabei verschleissarm arbeiten soll. Die Struktur und die Abmessungen des Hohlzylinders und der Rundlochdüsen in dessen zylindrischer Wand sollen so gewählt seien, dass eine gleichmässige Verteilung der Flüssigkeit und der Temperatur dieser Flüssigkeit im Hohlzylinder und in den soeben erwähnten Rundlochdüsen erreicht wird, und dass die Rundlochdüsen eine geringe Verstopfungsneigung aufweisen. Darüber hinaus sollte der Hohlzylinder leicht montier- und abmontierbar sein, und der Hohlzylinder sowie die Rundlochdüsen sollten leicht zu reinigen sein.The invention is fundamentally based on the object, a device of the kind specified above, with which a close Drop size distribution is achievable, the average drop size when sprayed in a range of 50 to 500 microns, and preferably should be in a range of 100 to 350 microns. Within the scope of this basic task is the invention also the object of a device of the above To provide type, with which technically desired throughputs can be achieved in the atomization of the liquid, and which thereby should work wear-resistant. The structure and dimensions of the Hollow cylinder and the round hole nozzles in the cylindrical wall to are chosen so that a uniform distribution of the liquid and the Temperature of this liquid in the hollow cylinder and in the just mentioned round hole nozzles is achieved, and that the round hole nozzles a have low tendency to clog. In addition, the should Hollow cylinder easy to assemble and dismantle, and the hollow cylinder as well as the round hole nozzles should be easy to clean.

Der Erfindung liegt ferner die Aufgabe zugrunde Verfahren zum Zerstäuben, zur Sprühkühlung oder zur Sprühtrocknung einer Flüssigkeit mit einer erfindungsgemässen Vorrichtung zur Verfügung zu stellen.The invention is also the object of the method for Sputtering, for spray cooling or spray drying of a liquid to provide with a device according to the invention.

Der Ausdruck "Flüssigkeit" soll Lösungen, insbesondere wässrige Lösungen, Dispersionen und Emulsionen von Wirkstoffen, sowie Schmelzen, z.B. Fettschmelzen, die einen Wirkstoff enthalten können, umfassen. Beispiele von Wirkstoffen sind fettlösliche Vitamine, wie die Vitamine A, E, D und K; Carotinoide, wie β-Carotin, Zeaxanthin, Lutein und Astaxanthin, und fettlösliche pharmazeutische Wirkstoffe; aber auch wasserlösliche pharmazeutische Wirkstoffe und Vitamine, wie Vitamin C und die Vitamine der B-Gruppe.The term "liquid" is intended to mean solutions, in particular aqueous solutions, Dispersions and emulsions of active ingredients, as well as melts, e.g. Fat melts that may contain an active ingredient include. Examples of active ingredients are fat-soluble vitamins, such as vitamins A, E, D and K; Carotenoids, such as β-carotene, zeaxanthin, lutein and astaxanthin, and fat-soluble pharmaceutical agents; but also water-soluble Pharmaceutical agents and vitamins, such as vitamin C and the Vitamins of the B group.

Der eine Vorrichtung betreffende Teil der oben erwähnten Aufgabe wird erfindungsgemäss mit einer Vorrichtung der oben angegebenen Art gelöst, welche die im Patentanspruch 1 definierten Merkmale aufweist. The device related part of the above-mentioned object is solved according to the invention with a device of the type indicated above, which has the features defined in claim 1.

Weitere Aspekte dieser erfindungsgemässen Vorrichtung sind in den Unteransprüchen 2-11 definiert.Other aspects of this inventive device are in the Subclaims 2-11 defined.

Die Vorteile dieser erfindungsgemässen Vorrichtung sind wie folgt:

  • sie ermöglicht es, einen laminaren Fadenzerfall der zu zerstäubenden Flüssigkeit zu erzeugen und damit eine enge Tropfengrössenverteilung zu erzielen, wobei die mittlere Tropfengrösse bei der Versprühung in einem Bereich von 50 bis 500 Mikrometer, und bei bevorzugten Ausführungsformen in einem Bereich von 100 bis 350 Mikrometer liegt,
  • eine sehr einfache Struktur, die relativ kleinen Abmessungen und das geringe Gewicht des Hohlzylinders ermöglichen einen sehr kompakten Aufbau der Vorrichtung zum Zerstäuben von Flüssigkeiten,
  • die relativ kleinen Abmessungen bewirken weiterhin eine gleichmässige Verteilung der Flüssigkeit und der Temperatur dieser Flüssigkeit im Hohlzylinder und in den Rundlochdüsen im Zylindermantel, wodurch ebenfalls verhindert wird, dass sich die Rundlochdüsen durch Trocknungs- oder Geliervorgänge zusetzen und auf diese Weise verstopfen,
  • durch die relativ geringen Strömungsgeschwindigkeiten in den Bohrungen der Rundlochdüsen des Hohlzylinders wird ein sehr verschleissarmer Betrieb erreicht,
  • für den Rotationsantrieb des Hohlzylinders wird erheblich weniger Energie als bei konventionellen Lösungen benötigt, und
  • sie ist für relativ niedrige Flüssigkeitsdurchsätze optimal geeignet.
The advantages of this device according to the invention are as follows:
  • it makes it possible to produce a laminar yarn breakage of the liquid to be atomized and thus to achieve a narrow droplet size distribution, the mean droplet size on spraying being in a range of 50 to 500 microns, and in preferred embodiments in a range of 100 to 350 microns .
  • a very simple structure, the relatively small dimensions and the low weight of the hollow cylinder allow a very compact structure of the device for atomizing liquids,
  • the relatively small dimensions further cause a uniform distribution of the liquid and the temperature of this liquid in the hollow cylinder and in the round hole nozzles in the cylinder jacket, which also prevents the Rundlochdüsen enforced by drying or gelling processes and clogged in this way,
  • due to the relatively low flow velocities in the bores of the round hole nozzles of the hollow cylinder, a very low-wear operation is achieved,
  • for the rotational drive of the hollow cylinder considerably less energy than in conventional solutions is needed, and
  • It is optimally suited for relatively low liquid flow rates.

In einer Ausführungsform ist der Hohlzylinder auf einer mitrotierenden Hohlwelle aufgeschraubt, die zur Einspeisung der zu zerstäubenden Flüssigkeit in den Hohlzylinder dient. Der Hohlzylinder kann daher mit geringem Aufwand montiert und abmontiert werden, was den Zeitaufwand für Unterhaltsarbeiten verringert. Hierdurch und durch die sehr einfache Struktur sowie die geringe Wandstärke des Hohlzylinders sind der Hohlzylinder sowie die Rundlochdüsen leicht zu reinigen.In one embodiment, the hollow cylinder is on a screwed with co-rotating hollow shaft, which is used to feed the atomizing liquid in the hollow cylinder is used. The hollow cylinder can therefore be mounted and removed with little effort, which reduces the time spent on maintenance work. Through this and through the very simple structure and the small wall thickness of the hollow cylinder the hollow cylinder and the round hole nozzles are easy to clean.

Der eine Vorrichtung betreffende Teil der oben erwähnten Aufgabe wird erfindungsgemäss auch mit einer Vorrichtung der oben angegebenen Art gelöst, welche die im Patentanspruch 12 definierten Merkmale aufweist.The device related part of the above-mentioned object is according to the invention also with a device of the type specified above solved, which has the features defined in claim 12 features.

Weitere Aspekte dieser erfindungsgemässen Vorrichtung sind in den Unteransprüchen 13-28 definiert.Other aspects of this inventive device are in the Subclaims 13-28 defined.

Die oben erwähnten Vorteile der erfindungsgemässen Vorrichtung gemäss Anspruch 1 gelten auch für die erfindungsgemässe Vorrichtung gemäss Anspruch 12. Durch den relativ geringen Mehraufwand für das Einlaufrohr wird trotz gegebenenfalls grösserer Abmessungen des Hohlzylinders vorteilhafterweise eine gleichmässige Verteilung der Flüssigkeit im Hohlzylinder und in den Rundlochdüsen des Mantels des Hohlzylinders und eine gleichmässige Verteilung der Temperatur dieser Flüssigkeit im Hohlzylinder erzielt.The above-mentioned advantages of the inventive device according to Claim 1 also apply to the inventive device according to Claim 12. Due to the relatively low overhead for the inlet pipe is despite possibly larger dimensions of the hollow cylinder advantageously a uniform distribution of the liquid in the Hollow cylinder and in the round hole nozzles of the shell of the hollow cylinder and a uniform distribution of the temperature of this liquid in the Hollow cylinder achieved.

Der ein Verfahren betreffende Teil der oben erwähnten Aufgabe wird erfindungsgemäss mit Verfahren der oben angegebenen Art gelöst, welche in den Patentansprüchen 29-36 definiert sind.The procedural part of the above-mentioned object becomes according to the invention solved by methods of the type indicated above, which are defined in the claims 29-36.

Mit dem Verfahren gemäss Anspruch 30 wird eine sehr geringe Verstopfungsneigung der Rundlochdüsen der zylindrischen Wand des Hohlzylinders erzielt.With the method according to claim 30 is a very low Clogging tendency of the round hole nozzles of the cylindrical wall of the Hollow cylinder achieved.

Der Teil der oben erwähnten Aufgabe, welcher eine Verwendung der erfindungsgemässen Vorrichtung betrifft, wird durch die Verwendung gelöst, die durch den Patentanspruch 37 definiert ist. The part of the above-mentioned object, which is a use of the relates to the device according to the invention, by the use solved, which is defined by the patent claim 37.

KURZBESCHREIBUNG DER FIGURENBRIEF DESCRIPTION OF THE FIGURES

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Figuren 1-11 beschrieben. Es zeigen

  • Fig. 1 eine erfindungsgemässe Vorrichtung zum Zerstäuben von Flüssigkeiten, in welcher Vorrichtung ein Hohlzylinder gemäss Fig. 2 oder eine Anordnung : Hohlzylinder 21 mit Einlaufrohr 31, gemäss Fig. 9 verwendbar ist,
  • Fig. 2 eine schematische Darstellung eines Querschnitts einer ersten Ausführungsform 11 des Hohlzylinders einer erfindungsgemässen Vorrichtung,
  • Fig. 3 eine vergrösserte Darstellung einer Seitenansicht des Ausschnitts E in Fig. 2,
  • Fig. 4 eine vergrösserte Darstellung eines kleinen Teils eines Querschnitts des Zylindermantels 16 in Fig. 2,
  • Fig. 5 eine schematische Darstellung eines Querschnitts einer zweiten Ausführungsform 21 des Hohlzylinders einer erfindungsgemässen Vorrichtung,
  • Fig. 6 eine vergrösserte Darstellung einer Seitenansicht des Ausschnitts F in Fig. 5,
  • Fig. 7 eine vergrösserte Darstellung eines kleinen Teils eines Querschnitts des Zylindermantels 26 in Fig. 5,
  • Fig. 8 einen Querschnitt eines Einlaufrohrs 31, das im Hohlzylinder 21 gemäss Fig. 5 eingesetzt wird,
  • Fig. 9 einen Querschnitt des Hohlzylinders 21 gemäss Fig. 5 mit einem in diesem Hohlzylinder eingesetzten Einlaufrohr 31,
  • Fig. 10 eine schematische Darstellung einer Anordnung, bei der eine erfindungsgemässe Vorrichtung zur Erzeugung von Pulvern aus Lösungen, Dispersionen, Emulsionen und Schmelzen, vorzugsweise aus Emulsionen, verwendet wird.
  • Fig. 11 ein Diagramm aus dem die mit der erfindungsgemässen Vorrichtung erzielte enge Korngrössenverteilung, dargestellt als Volumenverteilung, hervorgeht.
    • Embodiments of the invention are described below with reference to FIGS 1-11. Show it
  • 1 shows a device according to the invention for atomizing liquids, in which device a hollow cylinder according to FIG. 2 or an arrangement: hollow cylinder 21 with inlet pipe 31, according to FIG. 9, can be used, FIG.
  • 2 shows a schematic illustration of a cross section of a first embodiment 11 of the hollow cylinder of a device according to the invention,
  • 3 is an enlarged view of a side view of the section E in Fig. 2,
  • 4 is an enlarged view of a small part of a cross section of the cylinder jacket 16 in Fig. 2,
  • 5 shows a schematic illustration of a cross section of a second embodiment 21 of the hollow cylinder of a device according to the invention,
  • 6 is an enlarged view of a side view of the detail F in Fig. 5,
  • 7 is an enlarged view of a small part of a cross section of the cylinder jacket 26 in Fig. 5,
  • 8 shows a cross section of an inlet pipe 31, which is used in the hollow cylinder 21 according to FIG. 5,
  • 9 shows a cross section of the hollow cylinder 21 according to FIG. 5 with an inlet pipe 31 used in this hollow cylinder, FIG.
  • 10 shows a schematic representation of an arrangement in which a device according to the invention for producing powders from solutions, dispersions, emulsions and melts, preferably from emulsions, is used.
  • Fig. 11 is a diagram showing the achieved with the inventive device narrow grain size distribution, shown as volume distribution emerges.

    • PRINZIPIELLE STRUKTUR EINER ERFINDUNGSGEMÄSSEN VORRICHTUNGPRINCIPLE STRUCTURE OF A INVENTION CONTRAPTION

    Wie in Fig. 1 dargestellt, enthält eine erfindungsgemässe Vorrichtung folgende Komponenten:

    • einen drehbaren Hohlzylinder 11 oder 21 zur Aufnahme der zu zerstäubenden Flüssigkeit,
    • einen, vorzugsweise elektromechanischen, Antrieb 12 zum Rotieren des Hohlzylinders 11 bzw. 21 enthält, und
    • Mittel, durch welche die zu zerstäubende Flüssigkeit dem Hohlzylinder 11 bzw. 21 mit einem bestimmten Druck zugeführt wird. Dieser Druck liegt z.B. zwischen 0.3 und 5 bar.
    As shown in FIG. 1, an apparatus according to the invention contains the following components:
    • a rotatable hollow cylinder 11 or 21 for receiving the liquid to be atomized,
    • a, preferably electromechanical, drive 12 for rotating the hollow cylinder 11 and 21 contains, and
    • Means through which the liquid to be atomized is fed to the hollow cylinder 11 or 21 at a certain pressure. This pressure is for example between 0.3 and 5 bar.

    Die zuletzt genannten Mittel können z.B. eine mitrotierende Hohlwelle 19 umfassen, welche auch vom Antrieb 12 drehbar ist und welche einerseits z.B. über eine Pumpe mit einer Quelle der zu zerstäubenden Flüssigkeit, andererseits mit dem Hohlzylinder 11 bzw. 21 verbunden ist.The latter means may e.g. a co-rotating hollow shaft 19th include, which is also rotatable by the drive 12 and which on the one hand e.g. via a pump with a source of liquid to be atomized, on the other hand connected to the hollow cylinder 11 and 21, respectively.

    Der Hohlzylinder 11 bzw. 21 kann aus allen für den hier beschriebenen Zweck mechanisch bearbeitbaren Materialien hergestellt werden, z.B. aus einem Metall, wie Stahl oder legiertem Stahl, oder einem Kunststoff, wie Polyvinylchlorid oder Polyethylen.The hollow cylinder 11 or 21 can be made of all for the here described Purpose of machinable materials, e.g. out a metal, such as steel or alloy steel, or a plastic, such as Polyvinyl chloride or polyethylene.

    Der Antrieb 12 ermöglicht es, den Hohlzylinder 11 mit einer Drehzahl zu rotieren, die in einem Bereich zwischen 2000 und 20000 Umdrehungen pro Minute und vorzugsweise zwischen 3000 und 10000 Umdrehungen pro Minute liegt.The drive 12 makes it possible to the hollow cylinder 11 at a speed rotate in a range between 2000 and 20,000 revolutions per Minute and preferably between 3000 and 10000 revolutions per Minute is.

    Nachstehend werden zwei verschiedene Ausführungsformen einer erfindungsgemässen Vorrichtung beschrieben.Hereinafter, two different embodiments of a described device according to the invention.

    ERSTES BEISPIEL EINER ERFINDUNGSGEMÄSSEN VORRICHTUNGFIRST EXAMPLE OF A DEVICE ACCORDING TO THE INVENTION

    Eine erste Ausführungsform einer erfindungsgemässen Vorrichtung hat die oben beschriebene prinzipielle Struktur gemäss Fig. 1 und enthält einen Hohlzylinder 11 gemäss den Figuren 2-4.A first embodiment of an inventive device has the The above-described basic structure according to FIG. 1 and contains a Hollow cylinder 11 according to FIGS 2-4.

    Wie aus Fig. 2 ersichtlich, ist der Hohlzylinder 11 an seinem unteren Ende mit einem Boden 13 verschlossen und hat an seinem oberen Ende eine Öffnung 15. Wie in den Figuren 3 und 4 im Detail dargestellt, weist der Zylindermantel 16 des Hohlzylinders 11 eine Vielzahl von Rundlochdüsen 18 zur Abgabe der zu zerstäubenden Flüssigkeit auf.As can be seen from Fig. 2, the hollow cylinder 11 is at its lower end closed with a bottom 13 and has at its upper end a Opening 15. As shown in detail in Figures 3 and 4, the Cylinder jacket 16 of the hollow cylinder 11 a plurality of round hole nozzles 18 for dispensing the liquid to be atomized.

    Der Hohlzylinder 11 ist an seiner oberen Seite mit der mitrotierenden Hohlwelle 19 trennbar verbunden, durch welche eine Flüssigkeit in den Hohlzylinder 11 durch die Öffnung 15 einführbar ist. Der Hohlzylinder 11 ist vorzugsweise auf die mitrotierende Hohlwelle 19 aufschraubbar. Dies hat den Vorteil, dass der Hohlzylinder 11 ohne Spezialwerkzeug montier- bzw. demontierbar ist. Der Hohlzylinder 11 hat einen Durchmesser, der zwischen 10 und 25 Millimeter liegt.The hollow cylinder 11 is at its upper side with the co-rotating Hollow shaft 19 separably connected, through which a liquid in the Hollow cylinder 11 through the opening 15 can be inserted. The hollow cylinder 11th is preferably screwed onto the co-rotating hollow shaft 19. This has the advantage that the hollow cylinder 11 mounted without special tool or is removable. The hollow cylinder 11 has a diameter which between 10 and 25 millimeters.

    Die Fläche des Zylindermantels 16, welche die Rundlochdüsen 18 aufweist, erstreckt sich in axialer Richtung über eine Länge, die zwischen 20 und 120 Millimeter liegt.The surface of the cylinder jacket 16, which has the round hole nozzles 18, extends in the axial direction over a length which is between 20 and 120 Millimeters lies.

    Jede der Rundlochdüsen 18 im Mantel 16 des Hohlzylinders 11 hat einen Lochdurchmesser, der in einem Bereich zwischen 0.05 und 1 Millimeter, vorzugsweise zwischen 0.1 und 0.4 Millimeter liegt. Jede der Rundlochdüsen 18 im Mantel 16 des Hohlzylinders 11 hat ein Verhältnis Länge/Lochdurchmesser, das in einem Bereich zwischen 1 und 50, vorzugsweise zwischen 2 und 10 liegt.Each of the round hole nozzles 18 in the shell 16 of the hollow cylinder 11 has a Hole diameter ranging between 0.05 and 1 millimeter, preferably between 0.1 and 0.4 millimeters. Each of the Round hole nozzles 18 in the shell 16 of the hollow cylinder 11 has a relationship Length / hole diameter ranging between 1 and 50, preferably between 2 and 10.

    Mit der soeben beschriebenen Ausführung des Hohlzylinders 11 ist durch geeignete Wahl der Viskosität der zu zerstäubenden Flüssigkeit, des Durchsatzes der zu zerstäubenden Flüssigkeit, der Drehzahl und des Durchmessers des Hohlzylinders 11 ein laminarer Fadenzerfall und damit eine enge Tropfengrössenverteilung beim Zertropfen erzielbar, wobei die mittlere Tropfengrösse bei der Versprühung zwischen 50 und 500 Mikrometer und vorzugsweise zwischen 100 und 350 Mikrometer liegt. With the just described embodiment of the hollow cylinder 11 is through suitable choice of the viscosity of the liquid to be atomized, Throughput of the liquid to be atomized, the speed and the Diameter of the hollow cylinder 11 a laminar yarn decay and thus a narrow droplet size distribution when Zertropfen achieved, the average droplet size when sprayed between 50 and 500 Micrometer and preferably between 100 and 350 microns.

    ZWEITES BEISPIEL EINER ERFINDUNGSGEMÄSSEN VORRICHTUNGSECOND EXAMPLE OF A DEVICE OF THE INVENTION

    Eine Ausführungsform der erfindungsgemässen Vorrichtung hat die oben beschriebene prinzipielle Struktur gemäss Fig. 1, enthält aber anstelle des Hohlzylinders 11 gemäss den Figuren 1-3 eine Anordnung gemäss den Figuren 5-9, welche Anordnung einen drehbaren Hohlzylinder 21 zur Aufnahme der zu zerstäubenden Flüssigkeit und ein Einlaufrohr 31 enthält, das mit dem Hohlzylinders 21 drehbar ist und durch welches die zu zerstäubende Flüssigkeit in den Hohlzylinders 21 einführbar ist.An embodiment of the device according to the invention has the above described basic structure according to FIG. 1, but contains instead of the Hollow cylinder 11 according to the figures 1-3 an arrangement according to the 5-9, which arrangement a rotatable hollow cylinder 21 for Contains the intake of the liquid to be atomized and an inlet pipe 31, which is rotatable with the hollow cylinder 21 and through which the atomizing liquid in the hollow cylinder 21 is inserted.

    Wie aus Fig. 5 ersichtlich, ist der Hohlzylinder 21 an seinem unteren Ende mit einem Boden 23 verschlossen und hat an seinem oberen Ende eine Öffnung 25. Wie in den Figuren 6 und 7 im Detail dargestellt, weist der Mantel 26 des Hohlzylinders 11 eine Vielzahl von Rundlochdüsen 28 zur Abgabe der zu zerstäubenden Flüssigkeit auf.As seen from Fig. 5, the hollow cylinder 21 is at its lower end closed with a bottom 23 and has at its upper end a Opening 25. As shown in detail in Figures 6 and 7, the Mantle 26 of the hollow cylinder 11 a plurality of round hole nozzles 28 for Dispensing of the liquid to be atomized.

    Der Hohlzylinder 21 ist an seinem oberen Ende mit der mitrotierenden Hohlwelle 19 trennbar verbunden, durch welche eine Flüssigkeit in den Hohlzylinder 21 durch die Öffnung 25 einführbar ist. Der Hohlzylinder 21 ist vorzugsweise auf die mitrotierende Hohlwelle 19 aufschraubbar. Dies hat den Vorteil, dass der Hohlzylinder 21 ohne Spezialwerkzeug montier- bzw. demontierbar ist. Der Hohlzylinder 21 hat einen Durchmesser, der zweckmässig zwischen 10 und 60 Millimeter, und vorzugsweise zwischen 20 und 40 Millimeter, liegt.The hollow cylinder 21 is at its upper end with the co-rotating Hollow shaft 19 separably connected, through which a liquid in the Hollow cylinder 21 is inserted through the opening 25. The hollow cylinder 21st is preferably screwed onto the co-rotating hollow shaft 19. This has the advantage that the hollow cylinder 21 mounted without special tool or is removable. The hollow cylinder 21 has a diameter which suitably between 10 and 60 millimeters, and preferably between 20 and 40 millimeters, lies.

    Die Fläche des Zylindermantels 26, welche die Rundlochdüsen 28 aufweist, erstreckt sich in axialer Richtung über eine Länge, die zweckmässig zwischen 120 und 400 Millimeter, und vorzugsweise zwischen 120 und 250 Millimeter liegt. The surface of the cylinder jacket 26, which has the round hole nozzles 28, extends in the axial direction over a length that expediently between 120 and 400 millimeters, and preferably between 120 and 250 Millimeters lies.

    Jede der Rundlochdüsen 28 im Mantel 26 des Hohlzylinders 21 hat einen Lochdurchmesser, der zweckmässig zwischen 0.05 und 1 Millimeter und vorzugsweise zwischen 0.1 und 0.4 Millimeter liegt. Jede der Rundlochdüsen 28 im Mantel 26 des Hohlzylinders 21 hat ein Verhältnis Länge/Lochdurchmesser, das zwischen 1 und 50 und vorzugsweise zwischen 2 und 10 liegt.Each of the round hole nozzles 28 in the shell 26 of the hollow cylinder 21 has a Hole diameter reasonably between 0.05 and 1 mm and preferably between 0.1 and 0.4 millimeters. Each of the Round hole nozzles 28 in the shell 26 of the hollow cylinder 21 has a relationship Length / hole diameter between 1 and 50 and preferably between 2 and 10 lies.

    Das Einlaufrohr 31 ist im Zylinder 21 so angeordnet, dass die Längsachse 34 des Einlaufrohrs 31 mit der Rotationsachse 27 des Hohlzylinders 21 zusammenfällt.The inlet pipe 31 is arranged in the cylinder 21 so that the longitudinal axis 34 of the inlet pipe 31 with the axis of rotation 27 of the hollow cylinder 21st coincides.

    Der Eingang 32 des Einlaufrohrs 31 ist mit der Öffnung 25 des Hohlzylinders 21 und dadurch mit der Quelle der zu zerstäubenden Flüssigkeit verbunden.The inlet 32 of the inlet pipe 31 is connected to the opening 25 of the Hollow cylinder 21 and thereby with the source of the atomized Fluid connected.

    Der Ausgang 33 des Einlaufrohrs 31 ist im Innern des Hohlzylinders 21 und in seinem Endbereich angeordnet, in dem der Boden des Hohlzylinders liegt.The output 33 of the inlet pipe 31 is in the interior of the hollow cylinder 21 and arranged in its end region, in which the bottom of the hollow cylinder lies.

    Der Ausgang 33 des Einlaufrohrs 31 ist der Innenseite der Zylinderwand 26 zugewandt, wobei der Abstand zwischen diesem Ausgang 33 und der Innenseite des Zylinderbodens 23 viel kleiner als der Abstand zwischen diesem Ausgang 33 und der Öffnung 25 des Hohlzylinders 21 ist.The outlet 33 of the inlet pipe 31 is the inside of the cylinder wall 26 facing, wherein the distance between this output 33 and the Inside the cylinder bottom 23 much smaller than the distance between this output 33 and the opening 25 of the hollow cylinder 21 is.

    Der Abstand zwischen dem Ausgang 33 des Einlaufrohrs 31 und der Innenseite des Zylinderbodens 23 liegt vorzugsweise zwischen 1 und 20 Millimeter.The distance between the outlet 33 of the inlet pipe 31 and the Inside the cylinder bottom 23 is preferably between 1 and 20 Millimeter.

    In einer bevorzugten Ausführungsform weist die zylindrische Seitenwand 35 des Einlaufrohrs 31 ausser dem oben erwähnten Ausgang 33 mehrere Öffnungen auf, wobei alle diese Öffnungen in axialer Richtung zwischen seinem Eingang 32 und seinem Ausgang 33 angeordnet sind.In a preferred embodiment, the cylindrical side wall 35 of the inlet pipe 31 except the above-mentioned output 33 more Openings on, with all these openings in the axial direction between its input 32 and its output 33 are arranged.

    BEISPIELE VON VERFAHREN, DIE MIT EINER ERFINDUNGSGEMÄSSEN VORRICHTUNG DURCHFÜHRBAR SINDEXAMPLES OF PROCEDURES USING THE INVENTION DEVICE ARE IMPLEMENTABLE

    Mit einer erfindungsgemässen Vorrichtung sind zum Beispiel unter anderem folgende Verfahren 1) bis 5) durchführbar, wobei sämtliche Rundlochdüsen im Mantel des Hohlzylinders 11 bzw. 21 vollständig mit der Flüssigkeit gefüllt werden, und wobei der Flüssigkeitsdurchsatz durch den Hohlzylinder so eingestellt wird, dass die Flüssigkeit mit einer Strömungsgeschwindigkeit zwischen 0.1 und 2.0 m/s und vorzugsweise mit einer Strömungsgeschwindigkeit zwischen 0.3 und 1.0 m/s durch die Rundlochdüsen fliesst.

  • 1) Ein Verfahren zum Zerstäuben einer Flüssigkeit, bei dem die Flüssigkeit mittels einer der oben beschriebenen Vorrichtungen zerstäubt wird.
  • 2) Ein Verfahren zur Sprühkühlung einer Flüssigkeit, bei dem die Flüssigkeit mittels einer der oben beschriebenen Vorrichtungen zerstäubt wird, wobei der Hohlzylinder 11 bzw. 21 in einem Gasstrom, z.B. in einem Luftstrom mit einer Lufttemperatur zwischen 5 und 50 °C angeordnet wird. Anstelle von Luft sind andere Gase, z.B. Stickstoff, verwendbar.
  • 3) Ein Verfahren zur Sprühkühlung einer Flüssigkeit, bei dem die Flüssigkeit mittels einer der oben beschriebenen Vorrichtungen zerstäubt wird, wobei die Versprühung in einem indirekt temperierten Raum erfolgt, in dem die Raumtemperatur zwischen 5 und 50 °C liegt.
  • 4) Ein Verfahren zur Sprühtrocknung einer Flüssigkeit, bei dem die Flüssigkeit mittels einer der oben beschriebenen Vorrichtungen zerstäubt wird, wobei der Hohlzylinder 11 bzw. 21 in einem Gasstrom mit einer Gastemperatur zwischen 140 und 300 °C angeordnet wird.
  • 5) Ein Verfahren zur Sprühtrocknung einer Flüssigkeit, bei dem die Flüssigkeit mittels einer der oben beschriebenen Vorrichtungen zerstäubt wird, wobei die Versprühung in einem indirekt temperierten Raum erfolgt, in dem die Raumtemperatur zwischen 140 und 300 °C liegt.
    • With a device according to the invention, for example, the following methods 1) to 5) can be carried out, wherein all round hole nozzles in the shell of the hollow cylinder 11 and 21 are completely filled with the liquid, and wherein the liquid flow rate through the hollow cylinder is adjusted so that the liquid flows at a flow rate between 0.1 and 2.0 m / s and preferably with a flow rate between 0.3 and 1.0 m / s through the round hole nozzles.
  • 1) A method of atomizing a liquid in which the liquid is atomized by means of one of the devices described above.
  • 2) A method for spray cooling a liquid in which the liquid is atomized by means of one of the above-described devices, wherein the hollow cylinder 11 or 21 is arranged in a gas stream, for example in an air stream with an air temperature between 5 and 50 ° C. Instead of air, other gases, such as nitrogen, can be used.
  • 3) A method for spray-cooling a liquid in which the liquid is atomized by means of one of the above-described devices, wherein the spraying takes place in an indirectly tempered room in which the room temperature is between 5 and 50 ° C.
  • 4) A method for spray-drying a liquid, wherein the liquid is atomized by means of one of the above-described devices, wherein the hollow cylinder 11 or 21 is arranged in a gas stream with a gas temperature between 140 and 300 ° C.
  • 5) A method for spray-drying a liquid in which the liquid is atomized by means of one of the above-described devices, wherein the spraying takes place in an indirectly tempered room in which the room temperature is between 140 and 300 ° C.

    • Die mit den oben beschriebenen, erfindungsgemässen Vorrichtungen erzielbare enge Korngrössenverteilung ist im Diagramm gemäss Fig. 11 als Volumenverteilung dargestellt.The devices according to the invention described above achievable narrow particle size distribution is in the diagram of FIG. 11 as Volume distribution shown.

    Anwendungsbeispieleapplications

    Die mit der oben beschriebenen, erfindungsgemässen Vorrichtung durchführbare Zerstäubungsart kann grosstechnisch für die Produktion von Pulvern aus Lösungen, Dispersionen, oder vorzugsweise Emulsionen, sowie Schmelzen angewendet werden.The device according to the invention described above feasible Zerstäubungsart can be used for the production of large-scale Powders of solutions, dispersions, or preferably emulsions, and Melting be applied.

    Ein Beispiel für den dafür benötigten apparativen Aufbau ist schematisch in Fig. 10 dargestellt. Dieser Aufbau umfasst
    einen Stapelbehälter 41, eine Förderpumpe 42, ein Filter 43, eine Temperatur-konditionierte Förderleitung 44, einen Sprühbehälter 45, eine Sprüheinrichtung 46, eine Produktaustragleitung 47, und eventuell eine Zufuhrleitung 48 für nötige Hilfsstoffe wie z.B. Kieselsäure, Stärke, Kalt/Warmluft oder andere Hilfsmittel.     An example of the apparatus required for this purpose is shown schematically in FIG. 10. This structure includes
    a stacking container 41, a feed pump 42, a filter 43, a temperature-conditioned delivery line 44, a spray container 45, a spray 46, a product discharge line 47, and possibly a supply line 48 for necessary auxiliaries such as silica, starch, cold / warm air or others aids.

    Die Maschenweite des Filters 43 wird in Funktion des Lochdurchmessers der Rundlochdüsen 18 bzw. 28 gewählt. Für Lochdurchmesser in einem Bereich zwischen 0.05 und 1 Millimeter wird z.B. ein Filter 43 mit einer Maschenweite in einem Bereich zwischen 50 und 1000 Mikrometer gewählt. Für Lochdurchmesser in einem Bereich zwischen 0.1 und 0.4 Millimeter wird vorzugsweise ein Filter 43 mit einer Maschenweite in einem Bereich zwischen 100 und 400 Mikrometer gewählt.The mesh size of the filter 43 is a function of the hole diameter the round hole nozzles 18 and 28 selected. For hole diameter in one Range between 0.05 and 1 millimeter is e.g. a filter 43 with a Mesh size selected in a range between 50 and 1000 microns. For hole diameters in a range between 0.1 and 0.4 millimeters is preferably a filter 43 with a mesh size in a range between 100 and 400 microns.

    Anwendungsbeispiel: Herstellung eines Wirkstoffpulvers in GelatinematrixExample of use: Preparation of a drug powder in gelatin matrix

    Eine wässrige Wirkstoff (z.B. Vitamin E-) Emulsion wird im Stapelbehälter 41 bei 60°C gelagert.An aqueous drug (e.g., vitamin E) emulsion is placed in the stack container 41 stored at 60 ° C.

    Über die Förderpumpe 42 wird die Emulsion, mit einer Trockensubstanz von ca. 45-50 %, durch den Filter 43, mit einer typischen Maschenweite 100-300 Mikrometer, zur Sprüheinrichtung 46 gefördert.About the feed pump 42 is the emulsion, with a dry substance from about 45-50%, through the filter 43, with a typical mesh size 100-300 microns, promoted to the spray 46.

    Über die beschriebene Sprüheinrichtung 46 wird die Emulsion in den Sprühbehälter 45 zerstäubt. Die Umgebungstemperatur im Sprühbehälter 45 beträgt 20 °C. Gleichzeitig werden die benötigten Hilfsstoffe 8 in den Sprühbehälter 45 dosiert.About the described spray 46, the emulsion in the Spray container 45 atomized. The ambient temperature in the spray container 45 is 20 ° C. At the same time, the required auxiliary substances 8 in the Spray container 45 dosed.

    Die Versprühung erfolgt mit der erfindungsgemässen Sprüheinrichtung 46, die folgende Merkmale aufweist:

  • Rundlochdurchmesser DB = 0.3 Millimeter,
  • Anzahl der Rundlochdüsen = 1000,
  • Dicke der Zylinderwand s = 1 Millimeter,
  • Durchmesser des Hohlzylinders DZ = 25 Millimeter,
  • Drehzahl der Düse n = 7000 Umdrehungen/Minute.
  • Emulsionsdurchsatz: 150 kg/Stunde
    • The spraying takes place with the spraying device 46 according to the invention, which has the following features:
  • Round hole diameter DB = 0.3 mm,
  • Number of round hole nozzles = 1000,
  • Thickness of the cylinder wall s = 1 millimeter,
  • Diameter of the hollow cylinder DZ = 25 mm,
  • Speed of the nozzle n = 7000 revolutions / minute.
  • Emulsion throughput: 150 kg / hour

    • Am Ausgang 47 des Sprühbehälters 45 resultiert ein Pulver mit einer mittleren Partikelgrösse von 200-250 Mikrometer.At the outlet 47 of the spray container 45 results in a powder with a average particle size of 200-250 microns.

    Obwohl in der vorstehenden Beschreibung bevorzugte Ausführungsbeispiele der Erfindung mit spezifischen Angaben beschrieben sind, dürfte es klar sein, dass eine solche Beschreibung nur zur Veranschaulichung dient, und dass Änderungen und Abwandlungen solcher Ausführungsbeispiele realisierbar sind, ohne die wesentliche Lehre der Erfindung zu verlassen, die durch die nachstehenden Patentansprüche definiert ist. Although preferred in the above description Embodiments of the invention described with specific information It should be clear that such a description is only for Illustration serves, and that changes and modifications of such Embodiments can be realized without the essential teaching of To leave the invention by the following claims is defined.

    BezugszeichenlisteLIST OF REFERENCE NUMBERS

    1111
    hohler Zylinderhollow cylinder
    1212
    Rotationsantriebrotary drive
    1313
    Bodenground
    1515
    Öffnungopening
    1616
    Wandwall
    1717
    Rotationsachseaxis of rotation
    1818
    Rundlochdüseround-hole die
    1919
    Hohlwellehollow shaft
    2121
    hohler Zylinderhollow cylinder
    2323
    Bodenground
    2525
    Öffnungopening
    2626
    Wandwall
    2727
    Rotationsachseaxis of rotation
    2828
    Rundlochdüseround-hole die
    3131
    Einlaufrohrinlet pipe
    3232
    Eingangentrance
    3333
    Ausgangoutput
    3434
    Längsachselongitudinal axis
    3535
    Wandwall
    3636
    Bodenground
    4141
    Stapelbehälterstacking containers
    4242
    FeedpumpeFeed pump
    4343
    Filterfilter
    4444
    FeedleitungFeed line
    4545
    Sprühbehälterspray
    4646
    Sprüheinrichtungspraying
    4747
    ProduktaustragleitungProduktaustragleitung
    4848
    Zufuhrleitung für HilfsstoffeSupply line for auxiliaries

    Claims (33)

    1. A device for atomizing liquids, which device comprises
      a rotatable hollow cylinder (11) for the reception of the liquid to be atomized, and
      a drive (12) for the rotation of the hollow cylinder (11),
      with the hollow cylinder being closed at its lower end with a bottom (13) and having an opening (15) at its upper end, and its casing (16) having a plurality of circular hole-type nozzles (18) for the output of liquids to be atomized,
      the device being characterised in that
      (a) the hollow cylinder (11) has a diameter which is in the range of from 10 to 25 millimeter, and
      (b) the surface of the cylinder casing (16), which has the circular holetype nozzles (18), extends in the axial direction over a length in the range of from 20 to 120 millimeter.
    2. A device according to claim 1, characterised in that the hollow cylinder is removably attached at its upper end to a co-rotating hollow shaft (19) through which liquid can be introduced into the hollow cylinder (11) through the opening (15).
    3. A device according to claim 2, characterised in that the hollow cylinder is screw-mounted on the co-rotating hollow shaft.
    4. A device according to claim 1, characterised in that each of the circular hole-type nozzles (18) in the casing (16) of the hollow cylinder (11) has a hole diameter in the range of from 0.05 to 1 millimeter.
    5. A device according to claim 4, characterised in that the liquid to be atomized is introduced into the hollow cylinder (11) through a filter (43) which allows the passage of particles having a size below a determined value which is in the range of from 50 to 1000 micrometer.
    6. A device according to claim 1, characterised in that each of the circular hole-type nozzles (18) in the casing (16) of the hollow cylinder (11) has a hole diameter which is in the range of form 0.1 to 0.4 millimeter.
    7. A device according to claim 6, characterised in that the liquid to be atomized is introduced into the hollow cylinder (11) through a filter (43) which allows the passage of particles having a size below a determined value being in the range of from 100 to 400 micrometer.
    8. A device according to claim 1, characterised in that each of the circular hole-type nozzles (18) in the casing (16) of the hollow cylinder (11) has a length/hole diameter ratio in the range of from 1 to 50.
    9. A device according to claim 1, characterised in that each of the circular hole-type nozzles (18) in the casing (16) of the hollow cylinder (11) has a length/hole diameter ratio in the range of from 2 to 10.
    10. A device according to claim 1, characterised in that the drive (12) for the rotation of the hollow cylinder (11) allows a speed of rotation which is in the range of from 2000 to 20000 revolutions per minute.
    11. A device according to claim 1, characterised in that the drive (12) for the rotation of the hollow cylinder (11) allows a speed of rotation which is in the range of from 3000 to 10000 revolutions per minute.
    12. A device for atomizing liquids, which device comprises
      a rotatable hollow cylinder (21) for the reception of the liquid to be atomized, and
      a drive (12) for the rotation of the hollow cylinder (21),
      with the hollow cylinder (21) being closed at its lower end with a bottom (23) and having an opening (25) at its upper end, and its casing (26) having a plurality of circular hole-type nozzles (28) for the output of liquids to be atomized,
      characterised in that the device
      contains a feed conduit (31) which is rotatable with the hollow cylinder (21) and through which the liquid to be atomized can be introduced into the hollow cylinder (21),
      with the inlet (32) of the feed conduit (31) being connected to the opening (25) of the hollow cylinder (21) and thereby to the source of the liquid to be atomized,
      with the outlet (33) of the feed conduit (31) being arranged inside the hollow cylinder (21) and at its end region in which the bottom of the hollow cylinder lies,
      and with the feed conduit (31) being arranged in the hollow cylinder (21) such that the longitudinal axis (34) of the feed conduit (31) coincides with the axis of rotation (27) of the hollow cylinder (21), and its outlet (33) being directed towards the inner side of the cylinder wall (26), with the distance between this outlet and the inner side of the cylinder bottom (23) being considerably smaller than the distance between this outlet (33) and the opening (25) of the hollow cylinder (21).
    13. A device according to claim 12, characterised in that the distance between the outlet (33) of the feed conduit (31) and the inner side of the cylinder bottom (23) is in the range of from 1 to 20 millimeter.
    14. A device according to claim 12, characterised in that the wall (35) of the feed conduit (31) has several openings in addition to the outlet (33) mentioned above, with all of these openings being arranged in the axial direction between the inlet (32) and the outlet (33) of the feed conduit.
    15. A device according to claim 12, characterised in that
      (a) the hollow cylinder (21) has a diameter in the range of from 10 to 60 millimeter, and
      (b) the area of the cylinder casing (26), which has the circular holetype nozzles (28), extends in the axial direction over a length in the range of from 120 to 400 millimeter.
    16. A device according to claim 12, characterised in that
      (a) the hollow cylinder (21) has a diameter in the range of from 20 to 40 millimeter, and
      (b) the area of the cylinder casing (26), which has the circular holetype nozzles (28), extends in the axial direction over a length in the range of from 120 to 250 millimeter.
    17. A device according to claim 12, characterised in that the hollow cylinder (21) is removably attached at its upper end to a co-rotating hollow shaft (19) through which liquid can be introduced into the hollow cylinder (21) through the opening (25).
    18. A device in accordance with claim 13, characterised in that the hollow cylinder (21) is screw-mounted on the co-rotating hollow shaft (19).
    19. A device according to claim 12, characterised in that each of the circular hole-type nozzles (28) in the cylinder casing (26) of the hollow cylinder (21) has hole diameter being in the range of from 0.05 to 1 millimeter.
    20. A device according to claim 19, characterised in that the liquid to be atomized is introduced into the hollow cylinder (21) through a filter (43) which allows the passage of particles having a size below a determined value which is in the range of from 50 to 1000 micrometer.
    21. A device according to claim 12, characterised in that each of the circular hole-type nozzles (28) in the cylinder casing (26) of the hollow cylinder (21) has a hole diameter which is in the range of from 0.1 to 0.4 millimeter.
    22. A device according to claim 21, characterised in that the liquid to be atomized is introduced into the hollow cylinder (21) through a filter (43) which allows the passage of particles having a size below a determined value which is in the range of from 100 to 400 micrometer.
    23. A device according to claim 12, characterised in that each of the circular hole-type nozzles (28) in the cylinder casing (26) of the hollow cylinder (21) has a length/hole diameter ratio which is in the range of from 1 to 50.
    24. A device according to claim 12, characterised in that each of the circular hole-type nozzles (28) in the cylinder casing (26) of the hollow cylinder (21) has a length/hole diameter ratio which is in the range of from 2 to 10.
    25. A device according to claim 12, characterised in that the electromechanical drive (12) for the rotation of the hollow cylinder (21) allows a speed of rotation in the range of from 2000 to 20000 revolutions per minute.
    26. A device according to claim 12, characterised in that the electromechanical drive (12) for the rotation of the hollow cylinder (21) allows a speed of rotation in the range of from 3000 to 10000 revolutions per minute.
    27. A method for spray cooling of a liquid, characterised in that the liquid is atomized by means of a device according to any one of claims 1 to 26 and in that the hollow cylinder (11, 2 1) is arranged in a gas stream with a gas temperature in the range of from 5° to 50°C.
    28. A method for spray cooling of a liquid, characterised in that the liquid is atomized by means of a device according to any one of claims 1 to 26 and in that the spraying is carried out in an indirectly tempered room in which the room temperature is in the range of from 5° to 50°C.
    29. A method for spray drying of a liquid, characterised in that the liquid is atomized by means of a device according to any one of claims 1 to 26 and in that the hollow cylinder (11,21) is arranged in a gas stream with a gas temperature in the range of from 140 to 300°C.
    30. A method for spray drying of a liquid, characterised in that the liquid is atomized by means of a device according to any one of claims 1 to 26 and in that the spraying is carried out in an indirectly tempered room in which the room temperature is in the range of from 140° to 300°C.
    31. A method according to any one of claims 27 to 30, characterised in that the liquid is introduced under a pressure which is in the range of from 0.3 to 5 bar.
    32. A method according to any one of claims 27 to 31, characterised in that the throughput of liquid through the hollow cylinder (11,21) is adjusted such that the liquid flows through the circular hole-type nozzles (18, 28) with a flow rate being in the range of from 0.1 to 2.0 m/s, preferably from 0.3 to 1.0 m/s.
    33. The use of a device according to any one of claims 1 to 26 for the production of powders from solutions, dispersions, emulsions or melts.
    EP01121120A 2000-09-05 2001-09-03 Method and device for spraying liquids Expired - Lifetime EP1186348B1 (en)

    Priority Applications (2)

    Application Number Priority Date Filing Date Title
    DK01121120T DK1186348T3 (en) 2000-09-05 2001-09-03 Method and device for atomizing liquids
    EP01121120A EP1186348B1 (en) 2000-09-05 2001-09-03 Method and device for spraying liquids

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    EP00810800 2000-09-05
    EP00810800A EP1186347A1 (en) 2000-09-05 2000-09-05 Method and device for spraying liquids
    EP01121120A EP1186348B1 (en) 2000-09-05 2001-09-03 Method and device for spraying liquids

    Publications (2)

    Publication Number Publication Date
    EP1186348A1 EP1186348A1 (en) 2002-03-13
    EP1186348B1 true EP1186348B1 (en) 2005-01-05

    Family

    ID=8174890

    Family Applications (2)

    Application Number Title Priority Date Filing Date
    EP00810800A Withdrawn EP1186347A1 (en) 2000-09-05 2000-09-05 Method and device for spraying liquids
    EP01121120A Expired - Lifetime EP1186348B1 (en) 2000-09-05 2001-09-03 Method and device for spraying liquids

    Family Applications Before (1)

    Application Number Title Priority Date Filing Date
    EP00810800A Withdrawn EP1186347A1 (en) 2000-09-05 2000-09-05 Method and device for spraying liquids

    Country Status (15)

    Country Link
    US (1) US6651898B2 (en)
    EP (2) EP1186347A1 (en)
    JP (1) JP4989827B2 (en)
    KR (1) KR100759651B1 (en)
    CN (1) CN1180889C (en)
    AT (1) ATE286433T1 (en)
    AU (1) AU782291B2 (en)
    BR (1) BR0103891A (en)
    CA (1) CA2356430A1 (en)
    DE (1) DE50105013D1 (en)
    DK (1) DK1186348T3 (en)
    ES (1) ES2233538T3 (en)
    MX (1) MXPA01008943A (en)
    NO (1) NO20014302L (en)
    TW (1) TW527223B (en)

    Cited By (1)

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    JP2002143725A (en) * 2000-09-05 2002-05-21 Roche Vitamins Ag Device for making liquid to foggy state by using hollow cylinder

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    JP4865989B2 (en) 2002-02-01 2012-02-01 ベンド・リサーチ・インコーポレーテッド Method for producing a homogeneous spray-dried solid amorphous drug dispersion using an improved spray-drying apparatus
    US7037535B2 (en) * 2002-11-19 2006-05-02 Kimberly-Clark Worldwide, Inc. Method and composition for neutralizing house dust mite feces
    CL2004001884A1 (en) * 2003-08-04 2005-06-03 Pfizer Prod Inc DRYING PROCEDURE FOR SPRAYING FOR THE FORMATION OF SOLID DISPERSIONS AMORPHES OF A PHARMACO AND POLYMERS.
    WO2008080037A2 (en) * 2006-12-21 2008-07-03 Isp Investments Inc. Carotenoids of enhanced bioavailability
    KR100839464B1 (en) * 2007-04-06 2008-06-19 송유천 A device for ejecting gas and water mixture
    KR100784464B1 (en) * 2007-06-27 2007-12-11 (주)건우기술 Apparatus for rotating a jet nozzle of water jet system
    CN108970157B (en) * 2018-08-08 2021-04-09 江西邦诚动物药业有限公司 Non-contact heating spray drying device
    CN112976760A (en) * 2019-12-02 2021-06-18 杭州特种纸业有限公司 Special paper gluing compounding machine

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    Also Published As

    Publication number Publication date
    AU782291B2 (en) 2005-07-14
    KR20020019402A (en) 2002-03-12
    KR100759651B1 (en) 2007-09-17
    ES2233538T3 (en) 2005-06-16
    MXPA01008943A (en) 2005-09-05
    CN1345634A (en) 2002-04-24
    JP2002143725A (en) 2002-05-21
    CN1180889C (en) 2004-12-22
    US6651898B2 (en) 2003-11-25
    ATE286433T1 (en) 2005-01-15
    BR0103891A (en) 2002-04-23
    EP1186347A1 (en) 2002-03-13
    DK1186348T3 (en) 2005-05-17
    US20020043571A1 (en) 2002-04-18
    NO20014302D0 (en) 2001-09-04
    EP1186348A1 (en) 2002-03-13
    NO20014302L (en) 2002-03-06
    DE50105013D1 (en) 2005-02-10
    AU6559401A (en) 2002-03-07
    TW527223B (en) 2003-04-11
    CA2356430A1 (en) 2002-03-05
    JP4989827B2 (en) 2012-08-01

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