WO2006045297A1 - Verfahren und einrichtung zum mischen von mindestens zwei feinkörnigen feststoffen - Google Patents
Verfahren und einrichtung zum mischen von mindestens zwei feinkörnigen feststoffen Download PDFInfo
- Publication number
- WO2006045297A1 WO2006045297A1 PCT/DE2005/001934 DE2005001934W WO2006045297A1 WO 2006045297 A1 WO2006045297 A1 WO 2006045297A1 DE 2005001934 W DE2005001934 W DE 2005001934W WO 2006045297 A1 WO2006045297 A1 WO 2006045297A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- container
- gas
- fine
- volume
- solids
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/60—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
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/30—Mixers with shaking, oscillating, or vibrating mechanisms comprising a receptacle to only a part of which the shaking, oscillating, or vibrating movement is imparted
- B01F31/31—Mixers with shaking, oscillating, or vibrating mechanisms comprising a receptacle to only a part of which the shaking, oscillating, or vibrating movement is imparted using receptacles with deformable parts, e.g. membranes, to which a motion is imparted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/22—Mixing of ingredients for pharmaceutical or medical compositions
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- 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
- B01F2215/0436—Operational information
- B01F2215/0454—Numerical frequency values
Definitions
- the invention relates to a method and a device for mixing at least two fine-grained solids according to the preamble of claims 1 and 6.
- the invention is used in particular for mixing dry fine-grained solids, preferably granular or pulverulent solid matter. Particles in the chemical or pharmaceutical industry.
- DT 25 44 597 A1 discloses a method and apparatus for mixing and stirring solid, liquid and gaseous materials with pulse hydraulics.
- the Benzol ⁇ ter of the mixer or agitator is set within wide limits in force, frequency and amplitude variable pulses in a vibrating or oscillating motion.
- the pulses are generated by a pressure medium flow originating from a control unit.
- the frequency of the oscillating motion can be constantly changed between an upper and a lower limit.
- the device for generating the oscillatory motion consists of a control device for generating pressure pulses and a working piston loaded therewith in a cylinder, which transmits the pulsation to a rotating tool or the container of the mixer.
- the substances to be mixed are introduced from above via separate feeds into the container and flow through these via guide plates to a lower outlet.
- Horizontal on both sides of the container membranes are present, which are coordinated in the horizontal axis back and forth.
- the gas volume in the container is moved horizontally back and forth.
- the substances are also subjected to the pulsation and should mix homogeneously.
- DE 100 59 502 A1 specifies a device for conveying, metering and mixing fine particles.
- the device consists of a .nodularen conveying, dosing and mixing system for Feinstfr hopeen metallic, kera ⁇ mischer and other powders, which is based on the application of ultrasonic vibrations under an inert gas atmosphere (in which the gas, however, does not carry out a task) or in a vacuum.
- the vibration excitation of a tube segment acted upon by powder takes place by means of piezoelectric actuators and leads to an elliptical movement of the tube inner wall, whereby the powder is transported axially within the tube.
- DE 102 36 991 A1 describes a method and a device for the thermal treatment of fine-grained goods.
- the material is stored as a packed bed in a treatment apparatus and is flowed through by a gas stream.
- a vibration system generates periodic pressure oscillations in the working area of the treatment apparatus, which causes the bulk layer to resonate.
- the thermal energy required for a thermal treatment is introduced via heating segments in the estate.
- the object of the invention is to provide a method and a device for the effective and low-noise mixing of at least two fine-grained solids.
- the object of the device is to be achieved in a technically simple manner, wherein the device can be arranged fixed or detachable on a mixing container.
- the fine-grained solids are introduced up to a certain filling volume in a container with a certain container volume.
- the container is sealed in a gas-tight manner and the gas in the container is replaced by periodic mechanical change of the container volume.
- lumens are set in a pressure oscillation until the fine-grained solids are brought into a resonant oscillation for pressure oscillation of the gas.
- the solids to be mixed can be applied as a pour on a gas-permeable support floor, so that the container volume is divided into an upper and a lower space. The moving with the individual pressure waves gas flows through this in addition to the resonant vibration of the bed in alternating directions and enhances the mixing of solids.
- the specific parameters of the pressure oscillation, the pressure difference and the frequency are dependent on the specific solid particles as well as on the specific container for effective implementation of the method.
- the parameters are basically to be determined empirically, in In practice, the required values can be determined very quickly for mostly uniform containers and identical solid particles.
- the periodic mechanical change of the gas volume to produce a pressure oscillation has a frequency between 10 and 200 1 Zs and the amplitude is chosen such that an average pressure difference zwi ⁇ tween 10 and 2000 mbar is formed.
- the direction of movement of the fine-grained solids can also be influenced by means of mechanical guide elements, at least in the region of the filling volume. This makes it possible to redirect the higher movement in the upper area in such a way that the movement in the lower area is reinforced.
- the process is preferably used for mixing relatively smaller, lighter and dry fine-grained (granular or powdery) solid particles of the chemical and pharmaceutical industries.
- fine-grained solids having a higher mass
- the process according to the invention can only be used to a limited extent.
- the movement of the solid particles can also be supported by other means.
- a circulation of the gas within the container a general loosening of the solid particles can be effected.
- a specific vibration of the container it is possible to influence the movement of the solid particles at least in the boundary region between the solid particles and the container wall.
- the device according to the invention for mixing at least two fine-grained solids in a container with a specific container volume has a device for generating a periodic axial movement with a gas-tight, axially elastic element.
- the axial-elastic element can be flange-mounted on the container in a gastight manner, such that it reduces the container volume during expansion and increases upon contraction.
- the gas-tight axial-elastic element can also be flanged directly to the opening of the container.
- the axially elastic element may be a diaphragm, a bellows or a similar elastic element.
- a device for circulating the gas within the container or a vibration device can be present on the container, which are suitable for influencing at least parts of the solid particles in their direction of movement.
- the invention is described in greater detail by way of example in a device for mixing two pharmaceutical substances.
- pharmaceutical substances often have to be homogeneously mixed to produce a pharmaceutical product.
- the individual solid particles of the substances are usually very light and powdery, which makes them relatively difficult to mix with stirrers.
- the two substances are poured parallel outside the device according to the invention into a container, so that a basic mixture is produced.
- This Grund ⁇ mixture is introduced as a bed in a container with a gas-permeable support floor.
- the container is cylindrical with a diameter of 600 mm and a height of 800 mm.
- the gas-permeable support floor divides the container interior vertically into a larger upper room with a height of 700 mm and a smaller lower room with a height of approx. 100 mm.
- the bed is brought up to a height of 200 mm on the support floor in the larger upper space stamped ⁇ .
- a mechanical-pneumatic device for generating a periodic axial movement engages axially from the inside against a gas-tight metal bellows, which is flanged gas tight to a sealing surface on the container.
- a gas-tight metal bellows which is flanged gas tight to a sealing surface on the container.
- the container is sealed gas-tight and the metal bellows is moved periodically in alternating axial direction.
- the gas in the container is put into a pressure oscillation.
- the gas in the compression phase, as in the decompression phase, the gas also flows through the bed of the two pharmaceutical substances on the support floor.
- the individual particles of solids moving within the resonant oscillation are, surprisingly, homogenously mixed after a relatively short time owing to their different particle structure.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004051946 | 2004-10-25 | ||
DE102004051946.3 | 2004-10-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006045297A1 true WO2006045297A1 (de) | 2006-05-04 |
Family
ID=35703887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2005/001934 WO2006045297A1 (de) | 2004-10-25 | 2005-10-24 | Verfahren und einrichtung zum mischen von mindestens zwei feinkörnigen feststoffen |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2006045297A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3740028A (en) * | 1969-09-11 | 1973-06-19 | A Bodine | Inductive cavitator |
SU1713632A1 (ru) * | 1990-01-05 | 1992-02-23 | Ленинградский Технологический Институт Им.Ленсовета | Смеситель сыпучих материалов |
JP2004243161A (ja) * | 2003-02-12 | 2004-09-02 | Satake Chemical Equipment Mfg Ltd | 密閉式撹拌装置 |
-
2005
- 2005-10-24 WO PCT/DE2005/001934 patent/WO2006045297A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3740028A (en) * | 1969-09-11 | 1973-06-19 | A Bodine | Inductive cavitator |
SU1713632A1 (ru) * | 1990-01-05 | 1992-02-23 | Ленинградский Технологический Институт Им.Ленсовета | Смеситель сыпучих материалов |
JP2004243161A (ja) * | 2003-02-12 | 2004-09-02 | Satake Chemical Equipment Mfg Ltd | 密閉式撹拌装置 |
Non-Patent Citations (2)
Title |
---|
DATABASE WPI Week 199302, Derwent World Patents Index; Page 003, AN 1993-016280, XP002366201 * |
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) * |
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