EP3612296A1 - Dispositif et procédé d'agitation de liquides et de produits en vrac - Google Patents

Dispositif et procédé d'agitation de liquides et de produits en vrac

Info

Publication number
EP3612296A1
EP3612296A1 EP19708469.2A EP19708469A EP3612296A1 EP 3612296 A1 EP3612296 A1 EP 3612296A1 EP 19708469 A EP19708469 A EP 19708469A EP 3612296 A1 EP3612296 A1 EP 3612296A1
Authority
EP
European Patent Office
Prior art keywords
drum
liquid
bulk material
less
agitation
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.)
Granted
Application number
EP19708469.2A
Other languages
German (de)
English (en)
Other versions
EP3612296B1 (fr
Inventor
Torsten HEITMANN
Andreas Wilk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HEITMANN, TORSTEN
WILK, ANDREAS
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3612296A1 publication Critical patent/EP3612296A1/fr
Application granted granted Critical
Publication of EP3612296B1 publication Critical patent/EP3612296B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/40—Parts or components, e.g. receptacles, feeding or discharging means
    • B01F29/401—Receptacles, e.g. provided with liners
    • B01F29/4011—Receptacles, e.g. provided with liners characterised by the shape or cross-section of the receptacle, e.g. of Y-, Z -, S -, or X shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/60—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers
    • B01F29/63—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers with fixed bars, i.e. stationary, or fixed on the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/45—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor
    • B01F35/453—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor by moving them perpendicular to the plane of the opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles
    • B01F35/514—Mixing receptacles the mixing receptacle or conduit being transparent or comprising transparent parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
    • 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
    • B01F2215/0431—Numerical size values, e.g. diameter of a hole or conduit, area, volume, length, width, or ratios thereof
    • 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 an apparatus and a method for agitation of liquids or bulk material in the context of chemical, biological or physical processes.
  • liquids are mixed, for example, to accelerate reactions or even make them possible in the first place.
  • an agitation must take place in order to achieve certain crystallization results.
  • mechanical installations such as stirrers are used.
  • the object of the invention is to provide a device for the agitation of liquids or bulk material in the context of chemical, biological or physical processes available, which manages without such additional stirring elements and allows a particularly gentle agitation.
  • the invention relates to a device for agitation of liquids or bulk material in the context of chemical, biological or physical processes, the device having a container with a cavity for receiving a liquid or bulk material.
  • the container is a cylindrical drum, a jacket and two trays arranged on opposite sides of the casing, which is rotatably mounted about its substantially horizontal cylinder axis, wherein the ratio of the height to the diameter of the drum is less than 0.5.
  • the concept of agitation particularly encompasses a mixing of the liquid or of the bulk material.
  • the device allows a particularly gentle agitation of the liquid or the bulk material, which may be desirable in particular in sensitive processes such as crystallization or polymerization.
  • the liquid may be a solution or a liquid dispersion, for example an emulsion.
  • Essentially horizontal in connection with the cylinder axis means that it either runs exactly horizontally or only slightly, ie at an angle of at most 30 °, preferably at most 15 ° with respect to the horizontal. Due to the substantially horizontal course of the cylinder axis, the height of the drum essentially corresponds to its extent in the horizontal direction and its diameter substantially corresponds to its extent in the vertical direction. Due to the low height in relation to the diameter of the drum is also flat and has the overall shape of a standing disc.
  • the apparatus preferably includes a motor for rotating the drum about the cylinder axis.
  • the engine is, for example, an electric romotor.
  • the motor enables even agitation and automation of the process.
  • the drum as a whole can be removed from the device in order to fill, empty, clean or replace them.
  • a mechanism for moving the drum from a stationary operating position to a horizontal filling and removal position may be provided.
  • the drum has the shape of a rotary cylinder.
  • the bases or bottoms of the drum are so circular in one embodiment and the cylinder axis passes through the center of and normal to the base surfaces.
  • structural elements acting on the inner surfaces of the drum in the direction of rotation such as, for example, axially or obliquely running ribs. These structural elements on the inner surfaces of the shell and / or the bottoms controllably increase turbulence in agitation.
  • the inner surfaces of the drum in rotation Rich tion can be structureless and the agitation can be done alone by the entrainment of the liquid or the bulk material on the unstructured inner surfaces. In this way the agitation is particularly gentle.
  • the extent to which liquid or bulk material is carried along on the inner surfaces can also be regulated by the roughness of the inner surfaces and by their hydrophobicity. Hardly any deposits occur on the inner surfaces, especially since the energy carrier also takes place there and thus the agitation of the liquid or of the bulk material is strongest.
  • for the prevention and / or removal of deposits but also internals for cleaning the inner surfaces may be provided by, for example, scraping or scraping.
  • the insides are provided with a coating.
  • a coating examples include corrosion resistant coatings such as Teflon or the like.
  • Teflon a coating
  • the interior surfaces can be given the desired properties.
  • the ratio of the cylinder height to the cylinder diameter is less than 0.3 and preferably less than 0.2. Even aspect ratios of less than 0.1 are conceivable. Values of 0.01 or 0.05 are preferred as the lower ratio limits. Depending on the application, the use of different flat slices may be preferred.
  • the preferred dimensions of the drum may vary depending on the nature of the process being planned, with different factors such as fluid viscosity playing a central role. Exemplary values include, in terms of cavity, diameters of between 10 and 200 cm, heights of between 0.5 and 25 cm. Exemplary void volumes are between 50 mi and 500 I.
  • the drum has a closable opening, which is arranged, for example, on one of the floors.
  • the opening may serve to fill the drum prior to the start of the process and / or to remove the liquid or bulk material after completion of the process.
  • the opening can be used for manipulation, wherein a tool can be introduced during operation of the drum in this, for example, to take samples or perform measurements.
  • the drum can be lying down or standing over the opening to be filled and emptied.
  • the device comprises a mechanism for pivoting the drum between the standing and a lying position.
  • two or more separate openings are provided, with one opening for filling and another opening can be used for emptying. Different openings may for example be arranged on different bottoms of the drum.
  • For closing each opening may be provided a cover such as a pivotable flap or a removable cap.
  • the drum is designed so that at least one floor can be removed from the jacket as a whole.
  • the opening is formed by the open at the bottom floor surface of the drum. It can be provided that a peripheral seal is provided at the interface between the removable bottom and jacket. For releasably securing the bottom of the jacket clamping devices such as quick release or wing nuts can be provided.
  • only one floor can be removed from the jacket, wherein the other floor is either made in one piece with the jacket or is inextricably linked thereto, for example glued, welded or screwed.
  • the drum can also be so.biidet that both floors can be removed from the jacket as a whole.
  • the drum can at least partially be made of a transparent material or have a sight glass, so that the drum contents is visible from the outside.
  • the sight glass can be formed for example by a transparent cover of an opening described in more detail above. It can also be provided that at least one of the bottoms is formed completely transparent.
  • the drum has at least one tempering chamber with at least one connection for the application of a tempering fluid.
  • the tempering chamber extends over at least a portion of the drum shell.
  • the jacket can be made double-walled and the tempering can be formed by the gap of the walls.
  • at least two connections for a tempering fluid are present, namely a flow connection and a return connection.
  • the device includes ports for evacuation, pressurization, introduction of probes, or the like.
  • the hinged connections may generally be arranged on the jacket or on one of the bottoms, wherein an arrangement on one of the bottoms near the cylinder axis may be preferred in order to be able to use the connections during a rotation of the drum.
  • a hollow shaft may be provided, in which supply hoses run.
  • a hub rotatably mounted on the device is provided, around which the drum rotates. If necessary, the hub may extend over an area close to the axis of at least one floor.
  • One or more of the above-mentioned connections can be arranged in the region of such a hub.
  • the device may comprise a burst protection device, which may be mounted in the region of the jacket and / or in the region of at least one base and which gives the device the necessary stability, especially in overpressure processes, and guarantees its operational safety.
  • Weldable materials such as plastics and metals as well as ben example, glass, carbon, ceramic or fiber reinforced plastics come as material for the production of the floors and the shell of the drum.
  • the invention further relates to a method for agitation of a liquid or bulk material in the context of a chemical, biological or physical process in a Vorrich- device according to the invention, wherein the filled with liquid or bulk drum is rotated about the cylinder axis.
  • the process may be, for example, a chemical or biological reaction, so that the device according to the invention is used as a reactor.
  • the process may be a polymerization reaction wherein the reactor is for receiving and agitating the reaction mixture for a polymerization reaction.
  • the process may also involve the growth of crystals, so that the device according to the invention is used as a crystallizer.
  • Further processes, for the implementation of which the device according to the invention can be used include a fermentation, a distillation, an evaporation process, an extraction or a preparation of pigments.
  • the process can also be a pure mixing process.
  • the device can be used to homogenize the geometry of bodies.
  • the device according to the invention can in each case be used industrially or for research purposes, for example to investigate the applicability before a scale-up.
  • the rotational speed of the drum is less than 60 U / min, preferably less than 20 U / min, more preferably less than 10 U / min and more preferably less than 5 U / min.
  • An exemplary range is between 0.5 and 2 rpm.
  • the drum should only be turned so fast that the centrifugal forces are low compared to gravity. The stated values have proved to be advantageous in different processes, with the exact choice of an optimal speed depending on the type of process and different influencing factors such as, for example, the viscosity of the liquid.
  • the drum is filled with more than 1/8 and less than 3/4, preferably more than 1/4 and less than 2/3 with liquid or bulk material.
  • the drum must generally be filled with liquid or bulk material to carry out the process, at least to the extent that the bottom is covered, and at most completely.
  • the fill levels indicated are preferred ranges that are desirable for most processes. In many cases, a filling is cheap to about half.
  • the drum is tempered to a temperature deviating from the ambient temperature during the process. Suitable process temperatures are process-dependent and can be in the range of, for example, between -80 ° C and 400 ° C.
  • the tempering can be effected by flowing through the tempering chambers with tempering fluid and preferably with tempering liquid. Alternatively or additionally, electrical or inductive heating and heating with heat radiation or microwaves are conceivable.
  • the pressure within the drum can also be regulated to a pressure different from the ambient pressure, for example by evacuation or pressurization.
  • the drum can also be treated with an inert gas atmosphere.
  • the invention relates to a system with a plurality of devices combined to form a composite.
  • the drums can optionally with a be coupled common motor, for example, be angordnet on a common shaft in order to rotate them together in operation can.
  • Figure 1 a sectional view of a drum Vorrich a device according to the invention
  • FIG. 2 shows a further view of the drum according to FIG. 1;
  • Figure 3 a photograph of an embodiment of an inventive
  • Figure 4 a schematic representation of another embodiment of a
  • FIG. 5 shows a schematic representation of a further embodiment of a device according to the invention.
  • Figure 6 another embodiment of a drum of a device according to the invention.
  • FIG. 1 shows a sectional view of a drum 10 of a device according to the invention.
  • the circular cylindrical drum 10 has the shape of a circular disc by its small height, wherein the ratio of the height to the diameter is about 1 tu 10. It has a shell 11 and two bottoms 12 and 13, which include a cavity 14 for receiving liquid or bulk material.
  • the axis of rotation A of the drum 10 is horizontal. On the basis of the wave W, the drum can be set in rotation by a motor not shown in FIG.
  • the bottom 12 can be removed in total from the shell 11, wherein a circumferential annular seal 15 is provided for sealing the gap formed between the shell 11 and bottom 12.
  • the casing 11 comprises on its end face axially projecting threaded pins 16, which are guided by corresponding bores of the bottom 12. The bottom 12 is clamped to the threaded pins 16 by means of wing nuts 17.
  • the bottom 12 In the central region of the bottom 12 is also an opening 18 which is closed by a transparent disc-shaped cover 19.
  • the opening also serves as a viewing window and as a further filling or removal opening.
  • the cover is clamped between the base 12 and an annular aperture 20, wherein between the cover 19 and the base 12 as well as between the cover 19 and the aperture 20, respectively a circumferential annular seal 21 or 22 is provided.
  • the base 12 comprises, distributed around the circumference of the opening 18, axially projecting threaded pins 23, which are guided by corresponding holes in the aperture 20.
  • the panel 20 is also clamped to the threaded pins 23 by means of wing nuts 24.
  • the Mantei 11 is double-walled, wherein between the walls 11 a and 11 b, a fluid channel 25 is formed, through which a tempering for the purpose of heating or cooling of the drum contents can be passed.
  • the tempering medium is passed through a filling port 26 into the fluid channel.
  • the filling connection 26 can be connected to a hose coming from a hollow shaft and running along the rear side of the bottom 13, which in this respect co-rotates with the drum 10.
  • FIG. 2 shows a further schematic sectional view of the drum 10 of FIG. 1, this time with the cover removed.
  • FIG. 3 shows a photograph of an embodiment of a device 1 according to the invention.
  • a drum 10 which is made completely transparent, it comprises a holder 2, a motor 3 with gear 4 and a control unit 5.
  • the device 1 shown is in operation in the illustrated state, ie Drum 10 is rotated and filled with liquid. It can be seen that the liquid occupies slightly less than 1/4 of the void volume of the drum 10.
  • Figure 4 shows a schematic representation of another embodiment of a drum 10 of a device according to the invention.
  • the removable bottom 12 which is remote from the shaft, is made entirely of glass and has in its center an opening 18, which, in contrast to the opening of the embodiment according to FIG. 1, is at least temporarily not covered, but remains open.
  • an instrument 27 can also be immersed in the liquid during the rotation of the drum 10 in order to be able to carry out, for example, measurements, dosages or withdrawals during the process.
  • FIG. 5 shows a further embodiment of a device 1 according to the invention, the drum 10 being fastened to a holder 2.
  • the removable and off-shaft bottom 12 of the drum 10 is made entirely of glass.
  • an opening in the center of the bottom 12 is absent in this embodiment.
  • the bracket includes a motor that drives the shaft W.
  • the drum 10 is suspended on the shaft W.
  • the shaft is configured in this embodiment as a hollow shaft and receives a hose, can be transmitted by the heat transfer from the holder 2 in hoses within the rotating shaft W and from there via the terminal 26 on the not visible in this figure tempering.
  • FIG 6 shows a further embodiment of a drum 10 of a device 1 according to the invention, said drum 10 is made in three parts and both floors 12 and 13 can be removed from the jacket 11.
  • Both floors 12 and 13 are here essentially made of glass, with a respective metal fuse 28 being clamped in front of the glass surface as burst protection.
  • the burst protection 28 is also braced by the wing nuts, as explained in more detail in connection with the embodiment of Figure 1.
  • the two floors 12 and 13 are connected together in the region of a projection 29 and the shell 11 is clamped between the plates 12 and 13.
  • the jacket 11 itself does not comprise any fastening means.
  • reaction templates are placed in a drum of a device according to the invention with 100 cm diameter.
  • the width of the drum is 50mm.
  • the drum is rotated at 10 revolutions per minute.
  • the temperature is raised until the polymerization starts.
  • the temperature is kept constant.
  • the mixture is cooled again and the rotation of the drum stopped. Due to the gentle mixing, the formation of particularly long-chain polymers can be observed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)

Abstract

L'invention concerne un dispositif d'agitation de liquides ou de produits en vrac dans le cadre de processus chimiques, biologiques ou physiques. Le dispositif comporte un récipient pourvu d'un espace creux (14) servant à recevoir un liquide ou des produits en vrac. Le récipient est un tambour (10) cylindrique qui est pourvu d'une enveloppe (11) et de deux fonds (12, 13) disposés sur des côtés opposés de l'enveloppe, et qui est monté de manière à pouvoir tourner autour de son axe de cylindre (A) s'étendant sensiblement de manière horizontale. Le rapport entre la hauteur et le diamètre du tambour est inférieur à 0,5. L'invention concerne en outre un procédé d'agitation d'un liquide ou de produits en vrac dans le cadre d'un processus chimique, biologique ou physique dans un dispositif de ce type, le tambour rempli du liquide ou de produits en vrac tournant autour de l'axe de cylindre. L'invention concerne par ailleurs un système pourvu de plusieurs dispositifs de ce type regroupés en un ensemble.
EP19708469.2A 2018-03-06 2019-02-27 Dispositif et procédé d'agitation de liquides et de produits en vrac Active EP3612296B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018105130.1A DE102018105130A1 (de) 2018-03-06 2018-03-06 Vorrichtung und Verfahren zur Agitation von Flüssigkeiten oder Schüttgut
PCT/EP2019/054891 WO2019170498A1 (fr) 2018-03-06 2019-02-27 Dispositif et procédé d'agitation de liquides et de produits en vrac

Publications (2)

Publication Number Publication Date
EP3612296A1 true EP3612296A1 (fr) 2020-02-26
EP3612296B1 EP3612296B1 (fr) 2023-07-05

Family

ID=65635681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19708469.2A Active EP3612296B1 (fr) 2018-03-06 2019-02-27 Dispositif et procédé d'agitation de liquides et de produits en vrac

Country Status (3)

Country Link
EP (1) EP3612296B1 (fr)
DE (1) DE102018105130A1 (fr)
WO (1) WO2019170498A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL272388A (fr) * 1960-12-16
NL297717A (fr) * 1962-09-18
GB1159261A (en) * 1966-02-22 1969-07-23 Head Wrightson & Co Ltd An Improved Batch Mixer
US3685805A (en) * 1971-04-07 1972-08-22 Patterson Kelley Co Research blender
ES435711A1 (es) * 1975-03-07 1977-03-16 Metalquimica S A Perffeccionamientos en las maquinas de macerar y tratar car-ne.
CH602172A5 (fr) * 1975-10-10 1978-07-31 Fischer Ag Georg
US4423961A (en) * 1982-06-03 1984-01-03 Sevenson Company Feed mixing apparatus
CH691995A5 (de) * 1995-09-02 2001-12-31 Vaclav Feres Apparat zum Behandeln flüssiger Produkte.
US5847294A (en) * 1996-04-09 1998-12-08 Amherst Process Instruments, Inc. Apparatus for determining powder flowability
KR20160030948A (ko) * 2013-06-20 2016-03-21 햇치 피티와이 리미티드 비분리 믹서
CN204933360U (zh) * 2015-08-29 2016-01-06 宁国市朝阳耐磨材料有限公司 化学试剂混合装置

Also Published As

Publication number Publication date
DE102018105130A1 (de) 2019-09-12
WO2019170498A1 (fr) 2019-09-12
EP3612296B1 (fr) 2023-07-05

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