EP1742725B1 - Method and device for pneumatic treatment of powder materials - Google Patents
Method and device for pneumatic treatment of powder materials Download PDFInfo
- Publication number
- EP1742725B1 EP1742725B1 EP05715997A EP05715997A EP1742725B1 EP 1742725 B1 EP1742725 B1 EP 1742725B1 EP 05715997 A EP05715997 A EP 05715997A EP 05715997 A EP05715997 A EP 05715997A EP 1742725 B1 EP1742725 B1 EP 1742725B1
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- 239000000463 material Substances 0.000 title claims abstract description 31
- 239000000843 powder Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 19
- 230000000284 resting effect Effects 0.000 claims 1
- 239000000126 substance Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920000426 Microplastic Polymers 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003260 vortexing Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
- F26B17/101—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis
- F26B17/104—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis with fixed or moving internal bodies for defining or changing the course of the entrained material
-
- 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
- B01F23/60—Mixing solids with solids
-
- 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
- B01F25/104—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components characterised by the arrangement of the discharge opening
-
- 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
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
- B01F25/51—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is circulated through a set of tubes, e.g. with gradual introduction of a component into the circulating flow
-
- 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
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
- B01F25/53—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
- F26B17/107—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers pneumatically inducing within the drying enclosure a curved flow path, e.g. circular, spiral, helical; Cyclone or Vortex dryers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2215/00—Auxiliary or complementary information in relation with mixing
- B01F2215/04—Technical information in relation with mixing
- B01F2215/0413—Numerical information
- B01F2215/0418—Geometrical information
- B01F2215/0422—Numerical values of angles
Definitions
- the invention relates to a method according to the preamble of claim 1 and an apparatus for the pneumatic treatment of powdery substances according to the preamble of claim 7.
- a conveyor device for plastic granules with a hose line protrudes, which dives at one end by means of a lance in a storage silo and the other protrudes through a filter support into a pipe socket which sits on the box-like inlet of a tangential intake opening of a plasticizing.
- a suction chamber about the filter support a likewise penetrated by the hose line cover assembly is provided with a suction chamber. The latter has suction openings directed towards the pipe socket and is in operative connection with a nozzle system to which compressed air or compressed gas can be supplied as working medium.
- a relatively high negative pressure is generated, which propagates through the suction openings and the filter in the pipe socket and from there through the suction line into the storage silo.
- that working medium should generate such a high pressure that the solids are sucked into that box-type inlet while being mixed with a suction air stream.
- the solids are separated from the suction air stream, and this is mixed with the working fluid. Filter cleaning can not be performed during the process.
- the EP 0 574 596 A describes a plant for the pneumatic handling of cement from ships in silos by means of a so-called.
- Lock container of several container segments in the uppermost container segment sits an exhaust filter, the lowermost container segment tapers like a funnel.
- a device for the pneumatic conveying of powdered substances of a specific gravity of 0.1 to 15.0 g / cm 3 and with a particle size range between 0.1 to 300 microns as conveyed using a filter in pipe systems is after US 6,325,572 B1 the ratio of the length of a container containing a pumping chamber for temporarily receiving the material to be conveyed to its inner diameter between 0.5 and 10.
- the ratio of the length of a container containing a pumping chamber for temporarily receiving the material to be conveyed corresponds to the width of a provided between a vacuum pump for sucking the conveyed material and the container - as interchangeable arranged in a filter insert plate-like Filter membrane formed - filters at most of its diameter determined by that diameter.
- a container is to be taken, at whose funnel-shaped base region two U-shaped tubes provided with a gas inlet are connected at both ends; the gas is introduced at the upper end of the base region and flows through it - as well as bulk material stored in it - towards the lower end of the pipe.
- CH-A-670 399 discloses a method according to the preamble of claim 1 and an apparatus according to the preamble of claim 7.
- powdery substances are conveyed and transported in a controlled atmosphere.
- the known systems for conveying powdered materials of this type are usually tuned in the design of the subsequently to be promoted product; These systems are one-offs which require high investment costs.
- the filling of powder in reaction vessels or reactors within explosive zones is generally carried out manually via a lock or a protective valve, since most reactors do not have the necessary space for an adequate charging system. Such an operation does not comply with the existing safety rules to prevent the risk of explosion; when the reactor is inertized, manually charging powders from the manhole results in atmospheric pressures and neutralizes the protective effect of the inert gas. In the case of manual solids entry, the inertization is abolished within a short time (O 2 concentration> 8%) and is not restored even after a prolonged operational N 2 purge.
- two streams of material are fed to the container space through at least two feed pipes, in particular in opposite directions, and are swirled in the container space.
- the material flows are supplied approximately tangentially, preferably also in about the same container height, so that their tracks intermesh. In this way, an intimate turbulence is generated.
- the material flows are preferably also introduced at an inclination angle to a radial plane of the container, i. the streams are introduced inclined downwards.
- each of the streams is taken from a common vessel and thus creates a cycle.
- the swirling streams should be introduced from the container space in the common vessel and withdrawn together from this.
- Another approach which can also be combined with the above method, is also to take each of the streams to a separate vessel. In the latter case, preferably different substances are mixed together.
- connection piece As low it has proven to provide the container at least two mutually approximately parallel connection piece, which are preferably associated with a common radial plane; Conveniently, they should include an inclination angle with the radial plane towards the container axis and / or be inclined downwards towards the container interior. Also, it has proven to be favorable to let the connection piece to each other slightly offset in height in the container interior.
- the container sits with its lower end to a collecting vessel and the other end is provided with a connection piece.
- At least one reflection device can be arranged as an impact element, at which the particles bounce off and are pushed back into the stream.
- the floor-mounted outlet member has at least two output members for a respective line, which is connected at the other end to one of the attachment pieces;
- the latter is intended, according to a further feature of the invention, to connect the outlet member of the reaction vessel with an attachment neck of the container, thus enabling a circulation.
- a branch line is connected to the line; this branch is then connected at the end to a vessel containing one of the powdery substances.
- a device 10 for the pneumatic conveying of powdery materials of small particle size range has a collecting vessel 12 as a main container with a cylindrical vessel wall 14 of a height h and an outer diameter d.
- the interior 15 of the collecting vessel 12 is closed at the bottom by a housing bottom 16 from which protrudes in the vessel axis A a bowl-like bottom nozzle 17.
- the vessel interior 15 is spanned by a dome cover 18, from which - a cylindrical container 20 made of electrolytically polished stainless steel of a length a of, for example, 600 mm, projects axially relative to the vessel axis A; whose interior 22 of a diameter d 1 from here 200 mm serves as a vortex chamber.
- This container interior 22 is of spans a plate-like sieve 24, above which from a container lid 26 a - here T-shaped - connecting piece 28 rises.
- a vacuum line and at the other end a delivery gas line can be connected, at least the latter containing a check valve.
- Such valves are exemplary at 29 in Fig. 3 indicated.
- a butterfly valve 32 is integrated as a blocking member in a connecting flange 34 respectively.
- the interior 22 of the container 20 are fed through the attachment piece 30, 30 a and the lines 40, 40 a two streams of powdery substances in the conveying direction x and y tangentially and according to Fig.2 on the inner surface of the container 20 in opposite orbits x 1 and y 1 transferred.
- a support ring 51 of a chassis 52 hanging - collecting vessel 12 a funnel-like design, and its tip 46 merges into a T-shaped pipe connection 47, at the cross tube 48, the two lines 40, 40 a are connected.
- the latter are defined in holding loops 53 that support ring 51.
- an intermediate piece is integrated as a lock insert 50, to which a branch line 42 and 42 a is connected; this ends on the other hand with an insert tip 44 and 44 a of rigid material.
- the insert tips 44 and 44 a of the branch lines 42 and 42 a are each immersed in a vessel 54, 55, which include different powders P, Q; These are fed through the lines 40/42 and 40 a / 42 a the vortexing process in the container interior 22.
- Fig. 4 can recognize - the parallel attachment piece 30, 30 b arranged opposite to each other, so that the circular paths x 2 , y 2 of the streams x, y are rectified. The turbulence arises here by the lateral impact of the circular paths x 2 , y 2 each other.
- the container 20 more than a pair of connecting pieces 30, 30 a offer for connection to more than two lines 40, 40 a .
- the system consists - as described - from a main container 12, 12 a with a deflector installed in the middle 36.
- a conveyor system with two tangential attachment piece 30, 30 a as inputs attached.
- their butterfly valves 32 open.
- the powders are automatically introduced with a powder delivery system and circulated through the main container 12, 12 a for a predetermined period of time.
- a reflection device ensures a homogeneous distribution of the powder mixture in the main container 12, 12 a .
- the mixing effect allows a significant increase in the speed and efficiency of mixing.
- the limited circulation speed prevents damage to the particles.
- the system can easily be operated under exclusion of oxygen. This also allows hygroscopic powders such as powders, which can oxidize or explode, to be mixed.
- Powders may be automatically sucked from the vessels 54, 55, for example, from drums, sacks, or directly from process apparatus, granulators, or the like. After completion of the mixing process, the system can be fully automatically and completely emptied into the next processing step. This system does not include any moving or rotating mechanical parts, which allows for easy automatic cleaning.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Disintegrating Or Milling (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentanspruches 1 und eine Vorrichtung zum pneumatischen Behandeln pulverförmiger Stoffe nach dem Oberbegriff des Anspruchs 7.The invention relates to a method according to the preamble of claim 1 and an apparatus for the pneumatic treatment of powdery substances according to the preamble of claim 7.
Aus der
Die
Bei einer Vorrichtung zum pneumatischen Fördern pulverförmiger Stoffe eines spezifischen Gewichtes von 0,1 bis 15,0 g/cm3 sowie mit einem Korngrößenbereich zwischen 0,1 bis 300 µm als Fördergut unter Einsatz eines Filters in Rohrsystemen ist nach
Der
Auch in der chemisichen, pharmazeutischen und der Lebensmittelindustrie werden pulverförmige Stoffe gefördert und in einer kontrollierten Atmosphäre transportiert. Die bekannten Anlagen zum Fördern pulverförmiger Werkstoffe dieser Art sind zumeist in der Konstruktion auf das nachträglich zu fördernde Produkt abgestimmt; bei diesen Anlagen handelt es sich um Einzelanfertigungen, die hohe Anlagekosten bedringen.Also in the chemical, pharmaceutical and food industries powdery substances are conveyed and transported in a controlled atmosphere. The known systems for conveying powdered materials of this type are usually tuned in the design of the subsequently to be promoted product; These systems are one-offs which require high investment costs.
Das Einfüllen von Pulver in Reaktionsgefäße oder Reaktoren innerhalb explosiver Zonen erfolgt im allgemeinen manuell über eine Schleuse oder ein Schutzventil, da die meisten Reaktoren nicht über den nötigen Platz für eine adäquate Ladeanlage verfügen. Eine solche Arbeitsweise entspricht nicht den vorhandenen Sicherheitsregeln zur Unterbindung der Explosionsgefahr; wenn der Reaktor inertisiert ist, führt das manuelle Einfüllen von Pulvern vom Mannloch zu atmosphärischen Drücken und hebt den Schutzeffekt des Inertgases auf. Bei manuellem Feststoffeintrag ist die Inertisierung innerhalb kurzer Zeit aufgehoben (02 Konzentration > 8 %) und wird auch nach längerer betriebsmäßiger N2-Spülung nicht wieder hergestellt.The filling of powder in reaction vessels or reactors within explosive zones is generally carried out manually via a lock or a protective valve, since most reactors do not have the necessary space for an adequate charging system. Such an operation does not comply with the existing safety rules to prevent the risk of explosion; when the reactor is inertized, manually charging powders from the manhole results in atmospheric pressures and neutralizes the protective effect of the inert gas. In the case of manual solids entry, the inertization is abolished within a short time (
In Kenntnis dieser Gegeben hat sich der Erfinder das Ziel gesetzt, ein kostengünstiges Vermischen und Konditionieren pulverförmiger Stoffe zu ermöglichen.With this knowledge in mind, the inventor has set himself the goal of enabling cost-effective mixing and conditioning of pulverulent substances.
Zur Lösung dieser Aufgabe führt die Lehre des unabhängigen Anspruches; die Unteransprüche geben günstige Weiterbildungen an. Zudem fallen in den Rahmen der Erfindung alle Kombinationen aus zumindest zwei der in der Beschreibung, der Zeichnung und/oder den Ansprüchen offenbarten Merkmale. Bei angegebenen Bemessungsbereichen sollen auch innerhalb der genannten Grenzen liegende Werte als Grenzwerte offenbart und beliebig einsetzbar sein.To achieve this object, the teaching of the independent claim; the dependent claims indicate favorable developments. In addition, all combinations of at least two of the features disclosed in the description, the drawings and / or the claims fall within the scope of the invention. at given design ranges, values within the stated limits should also be disclosed as limit values and be used as desired.
Erfindungsgemäß werden dem Behälterraum durch zumindest zwei Zuführrohre zwei Stoffströme -- insbesondere gegenläufig -- zugeführt und in dem Behälterraum verwirbelt. Dazu hat es sich als günstig erwiesen, dass die Stoffströme etwa tangential zugeführt werden, bevorzugt zudem in etwa gleicher Behälterhöhe, so dass deren Bahnen ineinandergreifen. Auf diese Weise wird eine innige Verwirbelung erzeugt.According to the invention, two streams of material are fed to the container space through at least two feed pipes, in particular in opposite directions, and are swirled in the container space. For this purpose, it has proved to be advantageous that the material flows are supplied approximately tangentially, preferably also in about the same container height, so that their tracks intermesh. In this way, an intimate turbulence is generated.
Dazu werden bevorzugt die Stoffströme auch in einem Neigungswinkel zu einer Radialebene des Behälters eingeleitet, d.h. die Stoffströme werden abwärts geneigt eingeführt.For this purpose, the material flows are preferably also introduced at an inclination angle to a radial plane of the container, i. the streams are introduced inclined downwards.
Gemäß einer der Möglichkeiten zur Durchführung des erfindungsgemäßen Verfahrens wird jeder der Stoffströme einem gemeinsamen Gefäß entnommen und so ein Kreislauf erzeugt. Hierzu sollen die verwirbelten Stoffströme aus dem Behälterraum in das gemeinsame Gefäß eingeführt sowie gemeinsam aus diesem abgezogen werden.According to one of the possibilities for carrying out the method according to the invention, each of the streams is taken from a common vessel and thus creates a cycle. For this purpose, the swirling streams should be introduced from the container space in the common vessel and withdrawn together from this.
Eine andere -- mit dem vorstehenden Verfahren auch kombinierbare -- Vorgehensweise ist es auch, jeden der Stoffströme einem gesonderten Gefäß zu entnehmen. Im letztgenannten Fall werden bevorzugt unterschiedliche Stoffe miteinander vermischt.Another approach, which can also be combined with the above method, is also to take each of the streams to a separate vessel. In the latter case, preferably different substances are mixed together.
Im Rahmen der Erfindung liegt eine Vorrichtung, die vor allem bei Durchführung vorstehender Verfahren eingesetzt werden soll, bei der zumindest zwei Zuführleitungen für jeweils einen Stoffstrom vorgesehen und diese an jeweils einen Anschlussstutzen angeschlossen sind; diese Anschlussstutzen münden nach einem Merkmal der Erfindung gleichgerichtet in den Behälterinnenraum, so dass die sie verlassenden Stoffströme aufeinandertreffen und so die Verwirbelung durchführen.In the context of the invention is a device which is to be used above all in carrying out the above method, in which at least two supply lines are provided for each a material flow and these are connected to a respective connecting piece; these connecting pieces open according to a feature of the invention rectified in the container interior, so that they meet the flow of material meet and so perform the turbulence.
Als günstig hat es sich erwiesen, am Behälter zumindest zwei zueinander etwa parallele Anschlussstutzen vorzusehen, die bevorzugt einer gemeinsamen Radialebene zugeordnet sind; günstigerweise sollen sie zur Behälterachse hin mit der Radialebene einen Neigungswinkel einschließen und/oder zum Behälterinnenraum hin abwärts geneigt sein. Auch hat es sich als günstig erwiesen, die Anschlussstutzen zueinander etwas höhenversetzt in den Behälterinnenraum münden zu lassen.As low it has proven to provide the container at least two mutually approximately parallel connection piece, which are preferably associated with a common radial plane; Conveniently, they should include an inclination angle with the radial plane towards the container axis and / or be inclined downwards towards the container interior. Also, it has proven to be favorable to let the connection piece to each other slightly offset in height in the container interior.
Bevorzugt sitzt der Behälter mit seinem unteren Ende einem Auffanggefäß auf und ist andernends mit einem Anschlussstutzen versehen.Preferably, the container sits with its lower end to a collecting vessel and the other end is provided with a connection piece.
Es wird bevorzugt, den Gefäßinnenraum des Auffanggefäßes firstwärts an zumindest einen Bodendurchbruch des Behälters anzufügen sowie mit einem bodenwärtigen Auslassorgan zu versehen. Auch kann im Gefäßinnenraum im Strömungsweg wenigstens eine Reflektionseinrichtung als Prallorgan angeordnet sein, an der die Partikel abprallen und in den Strom zurückgedrückt werden.It is preferred to attach the vessel interior of the collecting vessel firstly to at least one bottom opening of the container and to provide it with a bottom outlet body. Also, in the interior of the vessel in the flow path at least one reflection device can be arranged as an impact element, at which the particles bounce off and are pushed back into the stream.
Erfindungsgemäß weist das bodenwärtige Auslassorgan zumindest zwei Ausgangsorgane für jeweils eine -- andernends an einem der Ansatzstutzen angeschlossene -- Leitung auf; letztere soll nach einem weiteren Merkmal der Erfindung das Auslassorgan des Reaktionsgefäßes mit einem Ansatzstutzen des Behälters verbinden, also einen Kreislauf ermöglichen. In einer weiteren Ausgestaltung ist an die Leitung eine Zweigleitung angeschlossen; diese Zweigleitung wird dann andernends mit einem Gefäß verbunden, das einen der pulverförmigen Stoffe enthält.According to the invention, the floor-mounted outlet member has at least two output members for a respective line, which is connected at the other end to one of the attachment pieces; The latter is intended, according to a further feature of the invention, to connect the outlet member of the reaction vessel with an attachment neck of the container, thus enabling a circulation. In a further embodiment, a branch line is connected to the line; this branch is then connected at the end to a vessel containing one of the powdery substances.
Als günstig hat es sich erwiesen, das untere Hohlprofil an einer Bodenkammer enden zu lassen, die durch eine Förderleitung mit dem oberen Hohlprofil verbunden ist, um eine Zirkulation zu ermöglichen.It has proved to be favorable to let the lower hollow section end at a bottom chamber, which is connected by a delivery line with the upper hollow section to allow circulation.
Mit der Erfindung wird die vom Erfinder gesehene Aufgabe in bestechender Weise gelöst; das erfindungsgemäße System bietet an:
- ein geschlossenes, selbstfüllendes Mischsystem mit hohem Grad an Containment;
- ein sehr effizientes Mischen, d.h. deutlich geringere Mischzeiten im Vergleich zu herkömmlichen Systemen;
- die Möglichkeit, unterschiedliche Pulver in sehr verschiedenen Verhältnissen zu mischen (1/10.000) ;
- das Arbeiten unter Ausschluss von Sauerstoffatmosphäre mit geringem Verbrauch an Stickstoff;
- ein vollständiges Entleeren des Systems mit der Möglichkeit, an Ort und Stelle zu reinigen;
- das direkte Hinzufügen kleinerer Produktmengen zur Mischung ohne Prozessunterbrechung;
- die Möglichkeit, Pulvereigenschaften werden während des Mischvorgangs verändert zu lassen;
- die Konzeption fester Anlagen, mit denen aus verschiedenen Behältern (Fässer, Big-Bags, Silos etc.) Pulver angesaugt werden können;
- das Ansaugen von Pulver über beträchtliche Distanzen;
- den Einsatz äußerst betriebssicherer und nur weniger beweglicher Teile bei geringer Wartung.
- a closed, self-filling mixing system with a high degree of containment;
- a very efficient mixing, ie significantly shorter mixing times compared to conventional systems;
- the possibility of mixing different powders in very different proportions (1 / 10,000);
- working under exclusion of oxygen atmosphere with low consumption of nitrogen;
- complete emptying of the system with the ability to clean in place;
- the direct addition of smaller quantities of product to the mixture without interrupting the process;
- the ability to allow powder properties to be changed during the mixing process;
- the conception of solid plants with which powders can be sucked in from different containers (barrels, big-bags, silos etc.);
- the suction of powder over considerable distances;
- the use of extremely reliable and less moving parts with low maintenance.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in:
- Fig. 1:
- eine erfindungsgemäße Vorrichtung in teilweise geschnittener Seitenansicht;
- Fig. 2:
- den vergrößerten Querschnitt durch
Fig. 1 nach deren Linie II-II; - Fig. 3:
- eine weitere Ausführungsform in teil- weise geschnittener Schrägsicht;
- Fig. 4:
- einen der Lage der Linie II-II in
Fig. 1 entsprechenden vergrößerten Quer- schnitt durchFig. 3 ;
- Fig. 1:
- a device according to the invention in a partially sectioned side view;
- Fig. 2:
- the enlarged cross section through
Fig. 1 according to their line II-II; - 3:
- a further embodiment in partially cut oblique view;
- 4:
- one of the location of the line II-II in
Fig. 1 corresponding enlarged cross-section throughFig. 3 ;
Eine Vorrichtung 10 zum pneumatischen Fördern von pulverförmigen Stoffen geringen Korngrößenbereiches weist ein Auffanggefäß 12 als Hauptbehälter mit einer zylindrischen Gefäßwandung 14 einer Höhe h und eines äußeren Durchmessers d auf. Der Innenraum 15 des Auffanggefäßes 12 ist nach unten hin von einem Gehäuseboden 16 verschlossen, von dem in der Gefäßachse A ein schüsselartiger Bodenstutzen 17 abragt.A
Der Gefäßinnenraum 15 wird von einem Domdeckel 18 überspannt, von dem -- axial zur Gefäßachse A -- ein zylindrischer Behälter 20 aus elektrolytisch poliertem Edelstahl einer Länge a von beispielsweise 600 mm aufragt; dessen Innenraum 22 eines Durchmessers d1 von hier 200 mm dient als Wirbelkammer. Dieser Behälterinnenraum 22 wird von einem plattenartigen Sieb 24 überspannt, oberhalb dessen von einem Behälterdeckel 26 ein -- hier T-förmiger -- Anschlussstutzen 28 aufragt. An diesen sind einends eine Vakuumleitung und andernends eine Fördergasleitung anschließbar, wobei zumindest letztere ein Sperrventil enthält. Solche Ventile sind beispielhaft bei 29 in
In den Behälterinnenraum 22 führen zwei seitliche Ansatzstutzen 30, 30a, welche -- gemäß
Von jedem der Zuführrohre oder Ansatzstutzen 30, 30a führt eine schlauchartige Leitung 40 bzw. 40a zu jeweils einem Radialrohr 38 jenes schüsselartigen Bodenstutzens 17. Im übrigen ist der besseren Übersicht halber die in
Dem Innenraum 22 des Behälters 20 werden durch die Ansatzstutzen 30, 30a sowie die Leitungen 40, 40a zwei Ströme pulverförmiger Stoffe in Förderrichtung x bzw. y tangential zugeleitet und gemäß
Beim Ausführungsbeispiel 10a nach
Die Einsatzspitzen 44 bzw. 44a der Zweigleitungen 42 bzw. 42a sind jeweils in ein Gefäß 54, 55 eingetaucht, welche unterschiedliche Pulver P, Q beinhalten; diese werden durch die Leitungen 40/42 bzw. 40a/42a dem Wirbelvorgang im Behälterinnenraum 22 zugeführt. Bei dieser Ausgestaltung sind -- wie vor allem
Durch einen Umschaltvorgang in jenen Zwischenstücken 50 der Leitungen 40, 40a werden letztere zeitweilig von ihren Zweigleitungen 42, 42a getrennt, und es entsteht ein Kreislauf zwischen dem Gefäßinnenraum 15 und dem Innenraum 22 des Behälters 20 zur weitergehenden Verwirbelung.By a switching operation in those
Nicht dargestellt sind andere mögliche Ausgestaltungen, deren Behälter 20 mehr als ein Paar von Ansatzstutzen 30, 30a anbieten zum Anschluss an mehr als zwei Leitungen 40, 40a.Not shown are other possible embodiments, the
Mit den beschriebenen Vorrichtungen 10, 10a können in völlig geschlossener Weise ganz unterschiedliche Pulver mühelos gemischt werden. Im Pharmabereich eignet sich diese Technologie besonders für die kontaminationsfreie Handhabung aktiver Substanzen, deren Eigenschaften nicht verändert werden dürfen.With the described
Das System besteht -- wie geschildert -- aus einem Hauptbehälter 12, 12a mit einem in dessen Mitte installierten Deflektor 36. Über dem Hauptbehälter 12, 12a ist ein Fördersystem mit zwei tangentialen Ansatzstutzen 30, 30a als Eingänge angebracht. Während einer Ansaugphase öffnen sich deren Schmetterlingsventile 32.The system consists - as described - from a
Die Pulver werden mit einem Pulverfördersystem automatisch eingeführt und während einer zuvor genau bestimmten Zeitdauer zirkulierend durch den Hauptbehälter 12, 12a geführt. Eine Reflektionseinrichtung gewährleistet dabei eine homogene Verteilung der Pulvermischung im Hauptbehälter 12, 12a.The powders are automatically introduced with a powder delivery system and circulated through the
Wenn sich die beiden Pulverstrahlen treffen, ermöglicht der Mischeffekt eine erhebliche Steigerung der Geschwindigkeit und Effizienz des Mischens. Durch die beschränkte Zirkulationsgeschwindigkeit wird die Beschädigung der Partikel verhindert.When the two powder jets meet, the mixing effect allows a significant increase in the speed and efficiency of mixing. The limited circulation speed prevents damage to the particles.
Das System kann problemlos unter Sauerstoffausschluss betrieben werden. Dadurch vermögen auch hygroskopische Pulver wie Pulver, welche oxydieren oder explodieren können, gemischt zu werden.The system can easily be operated under exclusion of oxygen. This also allows hygroscopic powders such as powders, which can oxidize or explode, to be mixed.
Diese Technologie lässt sich leicht in eine pharmazeutische Produktionslinie integrieren. Pulver können automatisch aus den Gefäßen 54, 55 -- beispielsweise aus Fässern, Säckenoder direkt aus Prozessapparaten Granulatoren od.dgl.angesaugt werden. Nach Beendigung des Mischvorgangs kann das System vollautomatisch und vollständig in den nächsten Verarbeitungsschritt entleert werden. Dieses System beinhaltet keine beweglichen oder rotierenden mechanischen Teile, was eine leichte automatische Reinigung ermöglicht.This technology is easily integrated into a pharmaceutical production line. Powders may be automatically sucked from the
Claims (20)
- Method for pneumatic treatment of powder materials (P, Q) in a container chamber (22) of a container (20) connected to both a supply line (40, 40a) and a material discharge, two material flows (x, y; P, Q) being supplied to the container chamber (22) by at least two supply tubes (40, 40a) connected to the container (22) and being swirled in the container chamber (22), and the swirled material flows (x1, y1) being introduced from the container chamber (22) into a common vessel (12, 12a) comprising a vessel interior (15), and the swirled material flows (x1, y1) being conveyed in a circuit between the container chamber (22) and the vessel interior (15),
characterised in that
the material flows (x, y; P, Q) are supplied to the container (20), which is connected to a vacuum line, from separate vessels (54, 55). - Method according to claim 1, characterised in that the two powder material flows are supplied in opposite directions.
- Method according to either claim 1 or claim 2, characterised in that the material flows (x, y) are supplied approximately tangentially.
- Method according to any one of claims 1 to 3, characterised in that the material flows (x, y) are supplied at approximately the same container height and the paths thereof interweave (Fig. 4).
- Method according to any one of claims 1 to 4, characterised in that the material flows (x, y) are introduced at an angle of inclination (w) to a radial plane (E) of the container (22).
- Method according to claim 1, characterised in that the swirled material flows (x1, y1) are removed from the common vessel (12, 12a) together.
- Device for pneumatic treatment of powder materials (P, Q), comprising a container (20) connected to both a supply line (40, 40a) and a discharge (23) for the material to be conveyed, for carrying out the method according to any one of the preceding claims, at least two supply lines (40, 40a) being provided for a respective material flow and being connected to a respective connecting piece (30, 30a, 30b) of a container (20), and the container (20) resting with its lower end on a collecting vessel (12, 12a) comprising a vessel interior (15), and the vessel interior (15) being provided with a downwardly directed outflow member (17), and the downwardly directed outflow member (17) comprising at least two outlet members (38) for a respective line (40, 40a) connected at the other end thereof to one of the connecting pieces (30, 30a), characterised in that the material flows are supplied to the container (20) from separate vessels (54, 55) and in that a vacuum line is connected to the container (20).
- Device according to claim 7, characterised in that the connecting pieces (30, 30a) open into the container interior (22) in the same direction (Fig. 2).
- Device according to claim 7, characterised in that the connecting pieces (30, 30b) open into the container interior (22) in opposite directions (Fig. 4).
- Device according to either claim 8 or claim 9, characterised in that the connecting pieces (30, 30a and 30, 30b) are arranged at the two ends of a common diametrical line (D).
- Device according to any one of claims 7 to 10, characterised in that at least two connecting pieces (30, 30a, 30b) which are approximately parallel to one another are provided on the container (20) and are preferably assigned to a common radial plane (E).
- Device according to claim 11, characterised in that the connecting pieces (30, 30a, 30b) and the radial plane (E) together form an angle of inclination (w) towards the container axis (A).
- Device according to claim 12, characterised by an angle of inclination (w) of approximately 10° to 45°, preferably approximately 15°.
- Device according to either claim 12 or claim 13, characterised by connecting pieces (30, 30a, 30b) inclined downward towards the container interior (22).
- Device according to any one of claims 7 to 14, characterised in that the connecting pieces (30, 30a, 30b) open into the container interior (22) somewhat offset in height with respect to one another.
- Device according to any one of claims 7 to 15, characterised in that the container (20) is provided with a connecting piece (28) for flow means at the end thereof remote from the collecting vessel (12, 12a).
- Device according to claim 16, characterised in that the vessel interior (15) of the collecting vessel (12, 12a) is connected in the upward direction to at least one base aperture (23) in the container (20).
- Device according to any one of claims 7 to 17, characterised in that the line (40, 40a) connects the outflow member (17) of the collecting vessel (12, 12a) to an attachment piece (30, 30a, 30b).
- Device according to any one of claims 7 to 18, characterised in that a branch line (42, 42a) is connected to the line (40, 40a).
- Device according to claim 19, characterised in that the other end of the branch line (42, 42a) is connected to a vessel (54, 55) which contains one of the powder materials (P, Q) (Fig. 3).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102004012772 | 2004-03-15 | ||
DE102004021612A DE102004021612A1 (en) | 2004-03-15 | 2004-05-03 | Method and device for the pneumatic treatment of powdery substances |
PCT/EP2005/002643 WO2005092485A2 (en) | 2004-03-15 | 2005-03-11 | Method and device for pneumatic treatment of powder materials |
Publications (2)
Publication Number | Publication Date |
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EP1742725A2 EP1742725A2 (en) | 2007-01-17 |
EP1742725B1 true EP1742725B1 (en) | 2011-01-19 |
Family
ID=34962922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP05715997A Active EP1742725B1 (en) | 2004-03-15 | 2005-03-11 | Method and device for pneumatic treatment of powder materials |
Country Status (6)
Country | Link |
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US (1) | US8834011B2 (en) |
EP (1) | EP1742725B1 (en) |
CN (1) | CN101421028B (en) |
AT (1) | ATE495815T1 (en) |
DE (2) | DE102004021612A1 (en) |
WO (1) | WO2005092485A2 (en) |
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-
2004
- 2004-05-03 DE DE102004021612A patent/DE102004021612A1/en not_active Withdrawn
-
2005
- 2005-03-11 US US10/592,900 patent/US8834011B2/en active Active
- 2005-03-11 CN CN200580008261.7A patent/CN101421028B/en active Active
- 2005-03-11 EP EP05715997A patent/EP1742725B1/en active Active
- 2005-03-11 WO PCT/EP2005/002643 patent/WO2005092485A2/en active Application Filing
- 2005-03-11 AT AT05715997T patent/ATE495815T1/en active
- 2005-03-11 DE DE502005010880T patent/DE502005010880D1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102004021612A1 (en) | 2005-10-06 |
CN101421028B (en) | 2016-01-20 |
WO2005092485A3 (en) | 2008-12-18 |
ATE495815T1 (en) | 2011-02-15 |
DE502005010880D1 (en) | 2011-03-03 |
WO2005092485A2 (en) | 2005-10-06 |
US20080037364A1 (en) | 2008-02-14 |
US8834011B2 (en) | 2014-09-16 |
CN101421028A (en) | 2009-04-29 |
EP1742725A2 (en) | 2007-01-17 |
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