EP3077170A1 - Dispositif et procédé de granulation de matériau fondu - Google Patents

Dispositif et procédé de granulation de matériau fondu

Info

Publication number
EP3077170A1
EP3077170A1 EP14808507.9A EP14808507A EP3077170A1 EP 3077170 A1 EP3077170 A1 EP 3077170A1 EP 14808507 A EP14808507 A EP 14808507A EP 3077170 A1 EP3077170 A1 EP 3077170A1
Authority
EP
European Patent Office
Prior art keywords
cooling medium
cutting chamber
perforated plate
granules
inflow
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.)
Withdrawn
Application number
EP14808507.9A
Other languages
German (de)
English (en)
Inventor
Stefan Deiss
Burkard Kampfmann
Reinhardt-Karsten MÜRB
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.)
Maag Automatik GmbH
Original Assignee
Maag Automatik GmbH
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 Maag Automatik GmbH filed Critical Maag Automatik GmbH
Publication of EP3077170A1 publication Critical patent/EP3077170A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/20—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped

Definitions

  • the invention relates to a device for granulating melt material, e.g. from a material or mixture of pharmaceutical active substance or e.g. a plastic melt material, such as a polymer melt material, into granules, in particular e.g. for the production of pharmaceutical products from a corresponding melting material, according to the preamble of claim 1 and a corresponding method according to the preamble of claim 7.
  • a device for granulating melt material e.g. from a material or mixture of pharmaceutical active substance or e.g. a plastic melt material, such as a polymer melt material
  • granules in particular e.g. for the production of pharmaceutical products from a corresponding melting material, according to the preamble of claim 1 and a corresponding method according to the preamble of claim 7.
  • melt material in general today, for example, processed by granulation.
  • extruders or melt pumps are generally used. These extruders or melt pumps push molten plastic feedstock through nozzles of a die plate into a cooling medium, e.g. Water.
  • a cooling medium e.g. Water.
  • the material emerging from the openings of the nozzles is separated there from a knife arrangement with at least one revolving knife, so that granules are formed.
  • Corresponding devices which carry out, for example, methods for underwater granulation are known as underwater granulation systems, for example under the product name SPHERO® of the company Automatik Plastics Machinery GmbH.
  • a molten polymer matrix is generally pressed through an array of one or more dies ending or ending in a planar surface swept by a knife assembly of one or more knives.
  • the emerging strand is from the one or the knives divided into small units, so-called granules, each of which is initially still molten.
  • the granules are brought by cooling below the solidification temperature of the polymer matrix, so that they solidify, thereby losing the melt's own stickiness and tendency to adhere to a surface or with each other.
  • the prior art is thereby further subdivided into such methods and machines using them, which use water or a similar liquid as a cooling medium, so-called underwater H Constant, and so-called dry hot strikes, these are those in which the cooling after the cut is carried out initially with the exclusion of a liquid medium only with gas (preferably air), or a mist, which consists of a mixture of a gas and liquid drops.
  • the latter group is further distinguished by the nature of a further process-related downstream cooling method, namely those methods and machines in which the more or less cylindrical to truncated cone wall of the cutting chamber is covered by a film of water, fall into the granules and with the they are transported out of the cutting device.
  • a further process-related downstream cooling method namely those methods and machines in which the more or less cylindrical to truncated cone wall of the cutting chamber is covered by a film of water, fall into the granules and with the they are transported out of the cutting device.
  • These are also called water ring pelletizers.
  • the size and the relative low cooling gas flow rate mean that it comes to internal turbulence, making part of the Granules may come in too early with the housing and other machine parts in contact and stick there. Furthermore, as the cooling gas is typically sucked in ambient air, which may already be loaded with dust and undesirable substances, and for which a control of the properties temperature, moisture content and dust-free only consuming if possible, is possible.
  • the cooling rate is primarily a function of the temperature differential and secondarily a function of the rapid exchange of volume elements of the gas with each other, which is referred to in the art as the degree of turbulence.
  • the Reynolds number can be used as a measure of the degree of turbulence.
  • the cooling effect depends primarily on the properties of the polymer melt (especially temperature, heat capacity, surface, thermal conductivity, particle size, specific surface) and the cooling gas itself (especially temperature, heat capacity, degree of turbulence, mass flow ratio cooling gas / polymer granules). Most of these factors are either material constants or process-related parameters, so that the cooling effect can only be influenced by a few possibilities in their intensity. Ultimately, the heat content of the polymer granules must be transferred to the cooling gas. Disregarding the heat exchanges with housing and other machine parts, the heat content difference of the melt material is equal to the heat content difference of the cooling gas.
  • the above-mentioned SPHERO® series of the company Automatik Plastics Machinery GmbH has under the name THA a granulator with a cooling and transport air supply, the cooling and transport air through a running around the perforated plate, directed to a bolt circle of nozzles, adjustable gap directed to the bolt circle.
  • THA a granulator with a cooling and transport air supply
  • the cooling and transport air through a running around the perforated plate, directed to a bolt circle of nozzles, adjustable gap directed to the bolt circle.
  • the cooling and transport air flow is directed precisely to the point at which the mass to be granulated, which has been heated to a temperature well above the melting point or the softening range, exits from the nozzle orifices giving the shape and is divided into granules by the rotating knives.
  • the surface of the granules in formation is to be cooled down so far that the typical materials in the molten state, the own stickiness suppressed as much as possible and by the also typical materials with temperature reduction, especially in the range just above the melting point own increase the viscosity, at least on the surface and in near-surface layers of the granules is solidified to the extent that the freshly produced granules largely retains its shape during removal by the cooling fluid in the form of cooling and / or transport air.
  • the surface of the perforated plate is cooled in the region of the circular circular sweeping across its surface and at least partially removed by the surface circular sweeping knife passing frictional heat and thereby adhering to a separating the to be formed granules between the surface of the perforated plate and the on the surface of the perforated plate resting, circularly across them passing knife-forming melt film largely prevented.
  • the effect may be that the perforated plate is cooled too far at the surface and in the near-surface layers and thereby from the hot region the mass flowing behind the perforated plate is cooled below the melting point or the softening area and thereby solidifies the nozzle bores already giving up before leaving the shape, thereby blocking or blocking the flow channels.
  • Another method for preventing freezing of the shape giving nozzle bores is the reduction of the mass flow of the cooling fluid, which in total also less heat is transferred to the perforated plate or withdrawn in the process of Querstromebenley the perforated plate.
  • the transport capacity of the inflowing cooling fluid go back so far that it can come to deposits of granules especially in the lower housing part, where the adjacent granules coming from each other from the supply cooling cooling fluid shield, so that the surface the granules, under the influence of heat flowing in from the inside, re-heat beyond the temperature threshold beyond which the surface becomes tacky, as a result of which adhesions of granules to one another and to the inner surfaces of the granulator can occur Hamper production of granules or bring the production process to a standstill.
  • the object of the invention is to provide a simple effective adjustability of the volume flow of the cooling fluid to a cutting chamber of a granulation device both for the supply of liquid and gaseous cooling fluid, for example water or process air.
  • One embodiment of the invention relates to an apparatus and a method for producing granules from a melt material.
  • the melt material exits from a perforated plate with nozzles disposed therein.
  • the perforated plate is arranged opposite a cutting arrangement with a cutter head with at least one knife and is driven by a knife shaft which can be connected to a motor.
  • the at least one knife sweeps circumferentially the nozzles in the perforated plate and thereby separates Granulatkömer of there emerging melt material.
  • the device has a cutting chamber in a housing which adjoins the perforated plate and which surrounds at least one knife of the cutting arrangement.
  • the cutting chamber is flowed through by a cooling medium which is introduced from an inflow device into the cutting chamber.
  • the granules are solidified from the melt material in the cooling medium.
  • the inflow nozzle arrangement is circumferentially surrounded by a separate inflow chamber in the rotation region of the at least one knife.
  • the inflow chamber is circumferentially arranged around the cutting chamber so that there the cooling medium is circumferentially from different sides radially from outside to inside or substantially radially from outside to inside introduced into the cutting chamber. In the rotation region, a centripetal or at least substantially centripetal flow of the cooling medium is thereby formed. Furthermore, the cooling medium and the granules therein are fed to an outlet of the cutting chamber.
  • a second is at least partially circumferential or a plurality of additional feed opening (s) are provided for an additional flow of cooling medium to the cutting chamber.
  • the second and second additional feed opening (s) has such an orientation that the additional flow of cooling medium from the through the second additional Zuströmdüsenanowski differs flow of the cooling medium at least in one of the following parameters: state of aggregation, direction, speed, pressure, temperature, density, flow rate, and / or composition.
  • a part of the housing which is directly adjacent to a preferably annular gap for cooling the perforated plate and granule surface and for transporting the granules produced, an additional opening or an arrangement of each other by a circulating channel or other in an appropriate extent uniformly or sufficiently uniformly distributed arrangement associated openings that at least partially spans the entirety of the housing circumference.
  • the adjustable gap entering different amount of cooling fluid can advantageously be made available for controlling the granulation process.
  • the first and the second amount of cooling fluid can differ in aggregate state, direction, speed, pressure, temperature, density, throughput, and / or composition.
  • cooling fluid quantities with different state of aggregation mean that the first amount of cooling fluid has, for example, cooling gases, while the second amount of cooling fluid can consist of cooling fluid and vice versa.
  • first and second amounts of cooling fluid may also be either cooling liquid / cooling liquids or cooling gas / cooling gases.
  • different-direction cooling fluid amounts it is to be understood that the supply nozzles of the first cooling fluid amount are aligned with the second cooling fluid amount supply nozzles different from the rotational axis of the cutting blades and / or the radius of the cutting chamber.
  • a different speed with respect to the first and second amounts of cooling fluid may be due to a different state of aggregation, a different delivery pressure on the cooling fluid amounts and / or different temperatures, densities and compositions of the cooling fluid amounts with the same structure of the supply nozzles of the first and the second amount of cooling fluid.
  • the exit velocity of the cooling fluid quantities can be further influenced.
  • a different throughput of cooling fluid quantities furthermore means a different amount of cooling fluid per unit time.
  • such variation possibilities of the first amount of cooling fluid, which emerges closer to the perforated plate advantageously causes the melt stream emerging from the die orifices of the perforated plate to be divided into granules in the phase in which it has not yet been divided by the rotating knives Therefore, potentially with a different, typically higher velocity is flown, be subjected to a local conditions adapted cooling intensity.
  • This adjusted cooling intensity allows the necessary temperature level to be maintained for the flow of the melt in the form of nozzle orifices of the orifice plate.
  • the second additional cooling fluid supply device which provides a different temperature, quantity, density and speed
  • the freshly formed granules which after a short acceleration phase, typically traveling at a speed approximating the speed of the cooling fluid surrounding it and thereby subjecting it to a comparatively low cooling intensity, in a suppression of production stickiness and a further solidification of useful temperature and a production inhibiting deposit be dissipated dissipating speed.
  • the first Zuströmdüsenan extract is designed as an annular, adjustable in its slot width slot nozzle, for example, in an antechamber of the Ringschlitzdüse adjustable blades, rotatable plates or other adjusting elements are arranged, which regulate the throughput through the Ringschlitzdüse.
  • the second additional supply nozzle openings may be constructed to be adjustable in a similar manner, so that the one additional feed nozzle opening is formed as an annular, adjustable in its slot width slot nozzle.
  • the adjustability of the Schlitzbreie can preferably be achieved by two mutually axially displaceable ring elements, between which forms the Ringschlitzdüse. In a collapse of the ring elements, the annular slot can be brought together to 0 and when moving apart of the ring elements, the slot width between the ring elements can be set precisely and reproducibly.
  • the one or more additional second (s) feed opening (s) is or are in fluid communication with an annular circumferential channel, so that with an evenly distributed over the circumference arrangement of the openings in an advantageous manner Ring from supply ports is available, which can be used and controlled independently of the firstdefluidzulite worn to optimize the course of the process.
  • the openings may be formed as bores or as radial or as axial or as obliquely aligned and limited slots.
  • a first inflow nozzle arrangement is arranged axially closer to the perforated plate than the one or more additional feed opening (s) of a second inflow nozzle arrangement.
  • the one or more second additional feed nozzle orifices may be located axially closer to the orifice plate than the first orifice nozzle assembly.
  • These alternative solutions show comparatively the attached Figures 1 and 5.
  • the one or more additional feed opening (s) are arranged in the area around the perforated plate and unfold advantageously a jet stream of cooling fluid, the detachment of the still sticky granules from the knife edges supported.
  • the one or more additional supply opening (s) of the second additional Zuströmdüsenan extract radially inwardly directed parallel to the plane of the perforated plate or at an angle of up to 30 ° from the plane of the perforated plate away from the cutting chamber is arranged radially inwardly inclined / are.
  • This additional axial acceleration component advantageously forces the cooling fluid with the separated Granules in a helically rotating flow direction up to a tangentially oriented outlet, which improves the transport efficiency of the granules and extends the residence time in the cutting chamber without wall contact.
  • the melt material is squeezed out of a perforated plate with nozzles arranged therein.
  • the perforated plate is circumferentially passed over by a cutting arrangement which is opposite the perforated plate and which has at least one knife on a cutter head, the knife being driven by a cutter shaft which interacts with a motor.
  • the melt material is separated at least from the one knife.
  • the melt strands from the nozzles of the perforated plate are exposed to the rotating blade in a cutting chamber in a housing, while at the same time a cooling medium flows through the cutting chamber.
  • This cooling fluid is provided by a first inflow device, so that the surfaces of the separated granules are solidified.
  • the cooling medium is supplied by a first separate inflow chamber, which circumferentially surrounds the cutting chamber in the rotation region of the at least one knife.
  • the granules of the melt material are solidified in the cooling medium at least at the surface.
  • cooling medium is introduced circumferentially from different sides radially from outside to inside or substantially radially from outside to inside the cutting chamber, wherein at least in the rotation region a centripetal or at least substantially centripetal flow of the cooling medium is formed and further the cooling medium and the therein Granules are fed to an outlet of the cutting chamber.
  • a second additional feed nozzle assembly spaced and separate from the first feed nozzle assembly, an additional flow of cooling medium is directed to the cutting chamber with such an orientation that the second additional flow of cooling medium is from the first flow of cooling medium through at least one of the following Parameter distinguishes: aggregate state, direction, velocity, pressure, temperature, density, flow rate, and / or composition.
  • Figure 1 shows a schematic partially cross-sectional view of a granulating device for granulating melt material according to a first embodiment of the invention.
  • Figure 2 shows a schematic partially cross-sectional view of a granulating device for granulating melt material according to a second embodiment of the invention.
  • Figure 3 shows a schematic partially cross-sectional view of a granulating device for granulating melt material according to a third embodiment of the invention.
  • Figure 4 shows a schematic partially cross-sectional view of a granulating device for granulating melt material according to a fourth embodiment of the invention.
  • Figure 5 shows a schematic partially cross-sectional view of a granulating device for granulating melt material according to a fifth embodiment of the invention.
  • Figure 6 shows a schematic partially cross-sectional view of a granulating device for granulating melt material according to a sixth embodiment of the invention.
  • FIG. 1 shows a schematic partially cross-sectional view of a granulating device 10 for granulating melt material according to a first embodiment of the invention.
  • a perforated plate 2 with circularly arranged therein nozzles 1, from which melt material can escape.
  • a cutting arrangement with a cutter head 4 and knives 3, the cutter head 4 being driven by a cutter shaft 5 cooperating with a motor not shown here.
  • the knives on the rotating cutter head 4 are arranged so that they sweep the nozzles 1 in the perforated plate 2 circumferentially and thereby separate granules of the emerging there melt material.
  • Such a granulating device 10 has a cutting chamber 7 in a housing 6, which adjoins the perforated plate 2.
  • the housing 6 has annular elements 16, 17 and 18 towards the perforated plate.
  • the first ring element 16 is flanged to the extrusion head 14 and defines an annular first cavity, which serves as a first inflow chamber 8 for a cooling fluid, which can flow in via a first inlet 23.
  • the first inflow chamber 8 passes to the perforated plate 2 in a first Zuströmdüsenan angel 9, which is formed in this case as an annular slit nozzle and at an angle of between 30 and 90 °, preferably as shown in Figure 1 45 ° relative to an axis 15 of the rotating cutter head 4 is aligned with the perforated plate 2 and thus allows a first intensive cooling of the separated granules directly after the training of the same by the blades 3 of the cutter head 4.
  • a first Zuströmdüsenan angel 9 which is formed in this case as an annular slit nozzle and at an angle of between 30 and 90 °, preferably as shown in Figure 1 45 ° relative to an axis 15 of the rotating cutter head 4 is aligned with the perforated plate 2 and thus allows a first intensive cooling of the separated granules directly after the training of the same by the blades 3 of the cutter head 4.
  • the second ring element 17 has a second annular cavity in the form of a second one Inflow chamber 12 into which cooling fluid can flow via a second inlet 24 and flows through a second Zuströmdüsenan ever 13 in the cutting chamber 7.
  • the nozzle openings of the second Zuströmdüsenan instruct 13 are radially aligned in this first embodiment of the granulator 10 according to Figure 1, so that the precooled directly during the cutting process by first Zuströmdüsenan ever 9 granules are now ideally zentripetal accelerated in the direction of the axis of rotation 15 of the rotary head 4 and thus prevented be to touch the inner wall of the housing 6 prematurely.
  • the granules can consequently be kept longer in the cooling fluid before they strike the inner wall of the housing 6. In addition, they are still intensively cooled by the resulting turbulence and their adhesiveness advantageously further reduced. Due to the two independent cooling fluid flows, on the one hand from the first Zuströmdüsenan Aunt 9 and the other By varying the state of aggregation, direction, velocity, pressure, temperature, density, flow rate, and / or the composition of the cooling fluid into the cutting chamber 7, the process control can be controlled or regulated in an improved manner from the second inflow nozzle arrangement 13 arranged axially of the first inflow nozzle arrangement 9.
  • exit surface F s of the annular gap nozzle of the first Zuströmdüsenan instruct 9 with an annular gap width b and a ring nozzle diameter Ds and the outflow F D of the second Zuströmdüsenan instruct 13 of individual nozzle bores with a nozzle diameter D D and a nozzle number n both about have equal outflow total areas, so that
  • F s F D (sum of the individual nozzles) is a diameter of a single second inflow nozzle of 8 mm for a number of 4 to provide second inflow nozzles or 4 mm at 16 second inflow nozzles and about 3.2 mm at 24 second inflow nozzles.
  • the ring member 18 may be equipped with larger nozzle diameters D D , for example, so that a larger Bacausström formation for the second Zuströmdüsenan ever 13 with respect to the first Inflow nozzle assembly 9 results.
  • D D larger nozzle diameters
  • the cooling fluids of the first and seconddefluidzuström boots may also have different temperatures and different densities and different coolant compositions.
  • the ring members 16 and 17 determine the size of the annular inflow chambers 8 and 12, respectively, the gap widths b and the diameter D D are defined by the configuration of the ring member 18.
  • the geometry of the first inflow nozzle arrangement 9 and of the second inflow nozzle arrangement 13 can thus be varied.
  • the cutting chamber has an outlet 11 which is flanged tangentially to the housing 6 and which discharges the granulating-enriched rotating cooling fluid flow tangentially out of the granulating device 10.
  • the rotation of the cooling fluid flow is essentially caused by the rotating blades.
  • the rotation can be assisted by appropriate alignment of the inflow nozzles of the second inflow nozzle assembly 13 when they are provided with an additional tangential component to their radial orientation shown in FIG.
  • FIG. 1 A second embodiment of an apparatus for granulating melt material is shown with the granulator 20 of FIG. 1 .
  • Components having the same functions as in FIG. 1 are identified by the same reference numerals in the following figures and will not be discussed separately.
  • FIG. 3 shows a third embodiment of the granulating device 30 of the invention, in which the radial orientation of the additional second inflow nozzle arrangement 13 is maintained, but the orientation of the annular gap of the first Zuströmdüsenan extract 9 is now also limited to a radial component.
  • both the design of the ring element 18 and of the ring element 16 in the area of the first inflow nozzle arrangement 9 are adapted to the requirements of the radial orientation for a centripetal acceleration of the cooling fluid.
  • a granulating device 40 is presented which further varies the alignment of the first supply nozzle arrangement 9 in the form of an annular gap and imposes on the first cooling fluid flow a distinct axial component which is directed away from the perforated plate 2.
  • the contour of the ring member 16 in the region of the first feed nozzle assembly 9 is adapted.
  • FIG. 5 shows a further possibility in the form of a fifth embodiment of a granulating device 50 in which the positions of an annular gap nozzle opening for the cooling fluid and the arrangement of nozzle bores of an inflow nozzle arrangement with respect to the perforated plate 2 are interchanged.
  • the arrangement of the ring elements 16, 17 and 18 is changed to each other.
  • the ring element 18 is now fixed radially symmetrically between the ring elements 16 and 17 and only affects the gap width b of an annular gap nozzle, which is now used as a second inflow nozzle arrangement 13 and at the same time has a flow orientation which provides an axial component in this fifth embodiment of a granulation device 50 ,
  • the width of the annular gap nozzle can be adapted to different process requirements by replacing the ring element 18.
  • FIG. 6 shows a granulating device 60 in which the arrangement of the first inflow nozzle arrangement 9 and the second inflow nozzle arrangement 13 are retained as in FIG. 5, but an externally accessible actuating mechanism 25 is additionally provided, with which the gap width b of an annular gap nozzle for the second inflow nozzle assembly 13 can be varied without having to replace the ring member 18 as shown in FIG.
  • This adjusting mechanism 25 essentially has a further ring element in the form of an adjusting ring 21, which has an internal thread, which is in engagement with an external thread of an inner cylinder 26 of the housing 6.
  • the housing 6 has an outer adjusting slot 29, in which an actuating arm 27 is arranged.
  • the adjusting slot 29 allows a Pivoting the actuator arm 27, for example, up to 90 ° while rotating the adjusting ring 21 by a quarter turn, whereby a ring member 19, the width b of the annular gap nozzle of the second Zuströmdüsenan angel 13 changed.
  • a driver 28 couples the adjusting ring 21 with the ring member 19 in the form of a bayonet-type coupling 22, so that upon pivoting of the actuating arm 27, the gap width b can be reduced by rotating the adjusting ring 21 by means of the coupled ring member 19 and / or increased.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

L'invention concerne un dispositif et un procédé de production de granulés en matériau fondu, comprenant une plaque perforée (2) présentant des filières (1) disposées intérieurement, un dispositif de coupe présentant une tête de coupe (4) pourvue d'au moins une lame (3) étant opposé à la plaque perforée, le dispositif présentant en outre une chambre de coupe (7) dans un boîtier (6), cette chambre étant traversée par un milieu de refroidissement qui est introduit par un dispositif d'amenée (8, 9) dans la chambre de coupe (7). Au moins partiellement sur la périphérie, au moins dans la zone de rotation d'au moins une lame, un ou plusieurs orifices d'amenée (12, 13) supplémentaires sont prévus pour un écoulement supplémentaire de milieu de refroidissement vers la chambre de coupe selon une direction telle que cet écoulement supplémentaire de milieu de refroidissement se différencie du milieu de refroidissement provenant du dispositif de filières d'amenée (9), par l'un des paramètres suivants: état de l'agrégat, direction, vitesse, pression, température, densité, débit et/ou composition.
EP14808507.9A 2013-12-05 2014-12-03 Dispositif et procédé de granulation de matériau fondu Withdrawn EP3077170A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013020317.1A DE102013020317A1 (de) 2013-12-05 2013-12-05 Vorrichtung und Verfahren zum Granulieren von Schmelzematerial
PCT/EP2014/003230 WO2015082068A1 (fr) 2013-12-05 2014-12-03 Dispositif et procédé de granulation de matériau fondu

Publications (1)

Publication Number Publication Date
EP3077170A1 true EP3077170A1 (fr) 2016-10-12

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EP14808507.9A Withdrawn EP3077170A1 (fr) 2013-12-05 2014-12-03 Dispositif et procédé de granulation de matériau fondu

Country Status (4)

Country Link
US (1) US20160279829A1 (fr)
EP (1) EP3077170A1 (fr)
DE (1) DE102013020317A1 (fr)
WO (1) WO2015082068A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP4017693B1 (fr) * 2019-08-20 2023-12-27 Basf Se Système de granulation sous l'eau, et procédé s'y rapportant pour la granulation d'une masse fondue de polymère
CN111054265B (zh) * 2019-12-07 2021-11-26 深圳市海特高分子材料有限公司 一种颗粒料自动挤出装置

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WO2015082068A1 (fr) 2015-06-11
US20160279829A1 (en) 2016-09-29

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