EP3558503B1 - Installation de production et procédé - Google Patents

Installation de production et procédé Download PDF

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Publication number
EP3558503B1
EP3558503B1 EP17818578.1A EP17818578A EP3558503B1 EP 3558503 B1 EP3558503 B1 EP 3558503B1 EP 17818578 A EP17818578 A EP 17818578A EP 3558503 B1 EP3558503 B1 EP 3558503B1
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EP
European Patent Office
Prior art keywords
housing
planetary roller
roller mixer
toothing
suspension
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.)
Active
Application number
EP17818578.1A
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German (de)
English (en)
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EP3558503A2 (fr
Inventor
Achim Philipp Sturm
Eduard Nater
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Buehler AG
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Buehler AG
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Publication of EP3558503A2 publication Critical patent/EP3558503A2/fr
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Publication of EP3558503B1 publication Critical patent/EP3558503B1/fr
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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
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/82—Combinations of dissimilar mixers
    • B01F33/821—Combinations of dissimilar mixers with consecutive receptacles
    • 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
    • B01F23/50—Mixing liquids with solids
    • B01F23/53—Mixing liquids with solids using driven stirrers
    • 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
    • B01F25/52—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle with a rotary stirrer in the recirculation tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
    • B01F27/053—Stirrers characterised by their elements, materials or mechanical properties characterised by their materials
    • B01F27/0531—Stirrers characterised by their elements, materials or mechanical properties characterised by their materials with particular surface characteristics, e.g. coated or rough
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/116—Stirrers shaped as cylinders, balls or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/116—Stirrers shaped as cylinders, balls or rollers
    • B01F27/1163—Rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
    • B01F27/2721—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces provided with intermeshing elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/75—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • B01F27/755—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis the stirrers being cylinders, balls or gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/95—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/95—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • B01F27/951—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis with at least one stirrer mounted on the sun axis
    • 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
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/213—Measuring of the properties of the mixtures, e.g. temperature, density or colour
    • 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
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/7174—Feed mechanisms characterised by the means for feeding the components to the mixer using pistons, plungers or syringes
    • 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
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/95—Heating or cooling systems using heated or cooled stirrers
    • 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
    • B01F2035/98—Cooling

Definitions

  • the invention relates to a production plant for processing a suspension and a method for dispersing suspensions.
  • Suspensions i.e. liquids with finely distributed solid particles, such as printing inks, battery slurries, adhesives and sealants, lubricants and cosmetics, have so far mainly been processed in rolling mills and agitator mills, whereby a fine and even distribution of the solid particles in the liquid is to be achieved.
  • a comminution of the solid particles can be achieved or at least the presence of clumping can be prevented.
  • the rollers and mills can be run through several times if the desired quality requires this.
  • closed systems should preferably be used.
  • rolling mills are difficult to close. If several roller passes are necessary, a lot of manual work can be required due to the generally high product viscosity of suspensions. This includes removing the dispersed product from the drainage plate, emptying the rolling mill and changing the product container. Automation is only possible to a limited extent.
  • Agitator ball mills are closed systems, but they require more effort. So the grinding media must be separated and it must be ensured that there is a blockage of separation devices or discharge openings through grinding media and / or oversized product is avoided. When changing products, it may also be necessary to remove the grinding media from the process area in order to completely clean the machine. This means a longer downtime.
  • Planetary roller extruders are also known from the prior art. These are mainly used for the production of plastics, whereby several solid or liquid product components can be metered into the extruder, compressed, mixed, plasticized, dispersed and chemically converted. The processed mass is pressed continuously under pressure through a nozzle or outlet opening. For this purpose, a pressure of up to about 100 bar can be produced in the extruder. The greatest pressure is in the process zone in the direction of the product outlet or at the product outlet itself. The central spindle is therefore usually connected to a drive on the side of the product inlet.
  • the material can be filled into a filling cylinder of the extruder from metering units arranged above the extruder.
  • the planetary roller extruder has a filling part designed as a single screw, which is either arranged in the housing of the planetary roller extruder or is arranged directly upstream of the product inlet.
  • the planetary roller extruder can be arranged vertically, the mass passing through the extruder from top to bottom. In the vertical arrangement, the material naturally flows in the direction of gravity, and thus away from an overhead filling area.
  • Planetary roller extruders are typically made of steel.
  • CN87100259 discloses a production plant according to the preamble of claim 1. It discloses a planetary gear mixer through which the flow is from bottom to top. In the housing of the planetary gear mixer there is a screw conveyor which is arranged on the same shaft as the central spindles and which guides the material into the space between the spindles.
  • the object of the invention is to avoid the disadvantages of the known and to provide a production plant and a method with which high-quality dispersions can be made available in an acceptable manner in terms of safety.
  • the object is achieved by a production plant according to claim 1 for dispersing a suspension with a planetary roller mixer.
  • the planetary roller mixer comprises a housing which is essentially cylindrical on the inside, the interior of which thus has rotational symmetry with respect to a longitudinal axis, and is provided with internal teeth.
  • the housing can have at least one essentially cylindrical socket with internal teeth.
  • the planetary roller mixer comprises at least one product inlet in a first end region of the housing and at least one product outlet in a second end region of the housing.
  • the planetary roller mixer comprises at least one central spindle arranged in the housing with teeth and at least one planetary spindle arranged in the housing with teeth, the teeth of the planetary spindle being in operative connection with both the teeth of the central spindle and the internal teeth of the housing or the socket.
  • a plurality of planetary spindles are preferably arranged around a central spindle.
  • the planetary roller mixer comprises a central spindle.
  • a central spindle for example, several central spindles can be arranged one behind the other on an axis in the longitudinal direction.
  • the internal toothing can be attached directly to the housing or it is attached to a bushing that can be exchangeably arranged in the housing.
  • the housing and possibly the socket are fixed.
  • the central spindle is usually set in rotation about a longitudinal axis by a drive device arranged outside the housing.
  • the toothing of the planetary spindles is on the one hand in an operative connection with the toothing of the central spindle, on the other hand with the internal toothing.
  • the drive of the central spindle also causes the planetary spindles to rotate.
  • the housing or the bushing, the central spindle and the planetary spindles enclose the process zone of the planetary roller mixer.
  • the process zone in which the suspension can reside and in which it is processed is located between the planetary spindles and the internal toothing of the housing or the bushing, between the central spindle and the internal toothing of the housing or the bushing and between the planetary spindles and the central spindle.
  • the length of the toothed spindles is preferred greater than or equal to its largest diameter, in particular greater than or equal to the largest diameter of the inner spindle.
  • the planetary roller mixer comprises at least one product inlet via which suspension can be introduced into the process zone of the planetary roller mixer, and at least one product outlet via which suspension can be discharged from the process zone of the planetary roller mixer.
  • Product inlet and product outlet are typically formed by openings in the housing.
  • the product inlet and the product outlet preferably allow an, in particular direct, fluid connection into and out of the process zone.
  • the planetary roller mixer does not include a separate solids inlet.
  • the planetary roller mixer does not include a screw conveyor that is integrated into the housing or directly adjoining the process zone.
  • the product outlet is located above or at the level of the product inlet.
  • the product outlet and the product inlet are preferably designed in such a way that the process zone of the planetary roller mixer can be essentially completely filled with suspension.
  • Essentially completely fillable means that the process zone can be filled to at least 80%, preferably at least 90%, particularly preferably at least 95%, and the planetary roller mixer with a process zone that is at least 80%, preferably at least 90%, particularly preferred is at least 95% filled with suspension, can be operated.
  • Gas quantities can be present in the filled planetary roller mixer which, for example, were introduced as gas inclusions with the suspension or which have collected in dead volumes. These gas quantities, for example air pockets, can prevent the process zone from being completely filled.
  • the enclosed gas volume can be minimized, for example, if the planetary roller mixer is provided with degassing openings.
  • all product outlets are preferably arranged above the product inlets during normal operation.
  • the planetary roller mixer fills at least up to the height of the product outlet.
  • the product outlet is preferably arranged so far above the product inlet that the process zone can be filled to at least 80%, preferably at least 90%, particularly preferably at least 95%, with suspension without the product outlet having to be closed.
  • the product outlet is particularly preferably arranged at the uppermost point of the process zone.
  • the product outlet has a product discharge line which comprises an overflow.
  • the product discharge line can be arranged at least partially above a product inlet line provided at the product inlet. The overflow ensures that the suspension only runs off when a certain filling level has been reached; in the present case, the process zone should be essentially completely filled with normal operation.
  • the product outlet line preferably connects directly to an opening in the housing, the product inlet line is preferably arranged directly upstream of an opening in the housing.
  • the possibility of essentially completely filling the process zone even without a device at the product outlet that creates back-up dust allows the suspension to be processed continuously.
  • This can be intensively homogenized and / or dispersed in the device according to the invention and the solids can optionally be further comminuted, the processing taking place in a closed system without moving parts being accessible. There is therefore no danger to operating personnel during operation.
  • the closed device also reduces the risk of contamination through unintentional entry of gases or dirt from the environment and of impairment through incidence of light.
  • At least part of the planetary roller mixer can be tempered.
  • the housing and / or the central spindle can be tempered.
  • the suspension can then be processed independently of the ambient temperature at a temperature which is favorable for the respective suspension components.
  • the planetary roller mixer has in particular temperature control channels through which a temperature control fluid, for example a cooling liquid, can be conducted.
  • the temperature control channels can in particular be formed in the central spindle and / or in the housing, each of which has a large surface area that is in contact with the suspension.
  • the temperature control fluid can also be used to dissipate heat that may arise during processing of the suspension, for example due to friction.
  • the housing and the spindles are arranged horizontally when used as intended.
  • the product outlet is preferably arranged above the product inlet.
  • the central spindle is connected to a drive on the side of the product outlet and preferably has no connection to the outer space surrounding the housing on the side of the product inlet.
  • the central spindle is not led out of the housing on the side of the product inlet and is also not connected to a shaft which leads out of the housing.
  • the bearing of the central spindle therefore does not have to be sealed against the outside space on the side of the product inlet, where typically high pressures prevail.
  • the suspension In the planetary roller mixer, the suspension is moved between the surfaces of the teeth. As a rule, the suspension is not pressed out of a nozzle, so that no great pressure has to be built up. It is therefore not necessary to convey the suspension in the direction of the product outlet by rotating the spindles.
  • the toothing can include an angle with the longitudinal axis of the spindle, for example 45 °.
  • the spindles then ensure that the suspension is propelled.
  • the spindles, the housing and / or the bushing advantageously have at least one area in which the toothing is designed such that the toothing cannot propel the suspension in one direction from the product inlet to the product outlet during operation.
  • This area can, for example, have straight teeth, in which the teeth are aligned parallel to the spindle axis.
  • the toothing along the entire central spindle is designed in such a way that no propulsion can be brought about by the spindles.
  • the spindles, the housing and / or the bushing have at least one area in which the toothing is designed in such a way that the toothing can be used to convey backwards in the direction of the product inlet during operation.
  • the suspension then has to go through Subsequent pushing of suspension, for example by means of a separate pump, can be conveyed through the planetary roller mixer.
  • the suspension remains in the process zone for a relatively long time without active propulsion by the spindles and is subjected to intensive processing.
  • the planetary roller mixer preferably has a drive device for driving the central spindle which, for example, provides a power range of up to 90 kW.
  • the drive device comprises, for example, a drive motor, a belt drive, possibly an additional gear and / or a bearing.
  • the planetary roller mixer is preferably operated at a speed of 300 to 3000 revolutions per minute, preferably at 300 to 2000 revolutions per minute.
  • the central spindle is typically led out of the housing on one side and can there be coupled to the drive device.
  • the suspension Since the suspension is in liquid form both when entering and when discharging, it is of secondary importance, especially in the case of a horizontal arrangement, whether the central spindle is led out of the housing on the side of the product outlet or the side of the product inlet. In any case, a seal is necessary.
  • the drive device is arranged closer to the product outlet than to the product inlet.
  • the product flow between the product inlet and the product outlet thus takes place in the direction of the drive device.
  • the pressure in the planetary roller mixer is greatest in the vicinity of the product inlet.
  • the central spindle is therefore preferably guided out of the housing on the product outlet side and coupled to the drive device and sealed on the product outlet side, where a lower pressure is applied.
  • a seal is provided between the central spindle and the drive device.
  • the seal ensures fluid tightness and can be designed so that it can withstand a pressure of up to about 10 bar.
  • a mechanical seal, a stuffing box or a spiral thread can be used as a seal.
  • the planetary roller mixer is advantageously dimensioned such that the process zone of the planetary roller mixer comprises an empty volume of less than 201, in particular 1-10 l.
  • the empty volume of the process zone usually results from the internal volume of the housing or the bush minus the volume of the central spindle and the planetary spindles. Because of the spindles, the empty volume of the process zone is much smaller than the internal volume of the housing or the socket.
  • the planetary roller mixer can be used in continuous operation, the rather small empty volume is sufficient for processing.
  • the housing, the bushing and / or the spindles are usually made of steel.
  • At least one element of the planetary roller mixer which comes into contact with the suspension during normal operation, has a coating on the surface that comes into contact with the suspension during operation, which contains ceramic material or consists of a ceramic material .
  • the element consists of ceramic material.
  • the elements in contact with the suspension include the central spindle, the planetary spindles, the housing and / or bushing.
  • These can be made of ceramic, have ceramic teeth on a core, for example made of steel, or have a ceramic coating.
  • Silicon carbide or silicon nitride can be used as the ceramic material.
  • Ceramic materials often have a high mechanical and chemical stability. They therefore have a service life which enables a large number of operating hours without the corresponding elements in contact with the suspension having to be replaced.
  • the planetary spindles are usually arranged parallel to the central spindle and can extend over the entire length of the central spindle.
  • the planetary roller mixer comprises at least one planetary spindle, which consists of segments arranged on a common axis.
  • the planetary roller mixer comprises segments with teeth that are in operative connection with both the teeth of the central spindle and the internal teeth of the housing or the socket, the segments being arranged one behind the other in the longitudinal direction and offset from one another in the circumferential direction.
  • a guide ring can be provided by means of which the segments are held in position, in particular in the longitudinal direction.
  • the axial direction of the central spindle is referred to as the longitudinal direction.
  • Short spindles are often easier to manufacture and therefore more cost-effective per length. If planetary spindles that are adjacent in the longitudinal direction are also offset from one another in the circumferential direction, the suspension within the planetary roller mixer is guided over longer distances and is processed more intensively.
  • the product deflection can be reinforced by the built-in guide rings for positioning the planetary spindle segments offset in the circumferential direction.
  • a conveying device in the form of an extrusion device comprises a stamp element and a storage container.
  • the storage container of the extrusion device is emptied with as little residue as possible by means of the plunger element, which is preferably connected to a piston and which, depending on the required extrusion pressure, can be driven pneumatically, hydraulically or by a motor.
  • the production system for processing a suspension comprises a conveying device, for example a screw conveyor or an extrusion device, and a planetary roller mixer, in particular as described above, as well as a metering device, which is connected downstream of the conveying device.
  • a conveying device for example a screw conveyor or an extrusion device
  • a planetary roller mixer in particular as described above
  • a metering device which is connected downstream of the conveying device.
  • the metering device can be a pump or a valve.
  • the valve can be connected directly to the conveying device, for example arranged at the outlet of a screw conveyor or at the outlet of a press.
  • the metering device is preferably controllable, for example as a clocked valve, so that certain delivery quantities can be metered.
  • the production plant according to the invention has the advantage that, in particular, highly viscous starting materials can also be fed to the planetary roller mixer in a precisely metered manner. This enables a continuous process for such starting materials as well.
  • the planetary roller mixer comprises a housing which is essentially cylindrical on the inside and is provided with internal toothing, or has at least one essentially cylindrical bushing with internal toothing.
  • the planetary roller mixer comprises at least one product inlet in a first end region of the housing and at least one product outlet in a second end region of the housing.
  • the planetary roller mixer also comprises at least one central spindle arranged in the housing with teeth and at least one planetary spindle arranged in the housing with teeth, the teeth of the planetary spindle being in operative connection with both the teeth of the central spindle and the internal teeth of the housing or the socket.
  • the product outlet is located above or at the level of the product inlet.
  • the conveying device is arranged upstream of the product inlet outside the housing and is in fluid connection with the product inlet.
  • the conveying device can be fed from a premixer or a storage container.
  • the conveying device can be an extrusion device.
  • squeezing devices usually do not have a high metering accuracy, so they can be coupled with a downstream metering device, for example a pump, which ensures a desired, for example constant, product flow in and through the planetary roller mixer.
  • a downstream metering device for example a pump
  • Low-viscosity suspensions can also be sucked in from a storage container by means of a pump alone.
  • the production plant comprises a pump.
  • the pump is preferably designed separately from the planetary roller mixer and not integrated into the housing of the planetary roller mixer.
  • the conveying device is preferably in fluid contact with the planetary roller mixer and / or the metering device with the planetary roller mixer via a line, for example a product inlet line.
  • the entire suspension can preferably be fed from the conveying device into the planetary roller mixer.
  • the planetary roller mixer preferably has only one product inlet which is in fluid connection with the conveying device, for example the pump or the extrusion device. In particular, the planetary roller mixer does not have a separate solids inlet.
  • the production plant has at least one premixer.
  • the premixer is preferably arranged upstream of the planetary roller mixer.
  • the components of the suspension that is to say liquid and solid particles, can be premixed in the premixer, so that a suspension can already be introduced into the planetary roller mixer.
  • the production facility can be used for a single run of suspension.
  • the processed suspension can be collected and passed through the production plant again, i.e. the production plant can be used in a multi-pass operation.
  • the production plant can have a product line via which the suspension can be fed from the planetary roller mixer into a premixer and another product line via which the suspension can be fed from the premixer into the conveying device, from where the suspension can be fed back into the planetary roller mixer.
  • the production plant can thus be operated in the circulation process, with the suspension being able to remain in the production plant until a desired quality is achieved.
  • the production plant can be equipped with a sensor that records a measured value that allows conclusions to be drawn about the quality of the suspension, for example a viscosity and / or particle size sensor.
  • the object on which the invention is based is also achieved by a method for dispersing suspensions according to claim 10.
  • a suspension is dispersed in a planetary roller mixer, as described above, with essentially the entire process zone of the planetary roller mixer being filled with suspension.
  • the planetary roller mixer comprises a housing which is essentially cylindrical on the inside and is provided with internal teeth.
  • the planetary roller mixer has at least one essentially cylindrical bush with internal teeth.
  • the planetary roller mixer comprises at least one product inlet in a first end region of the housing and at least one product outlet in a second end region of the housing.
  • the planetary roller mixer also comprises at least one central spindle arranged in the housing with teeth and at least one planetary spindle arranged in the housing with teeth, the teeth of the planetary spindle being in operative connection with both the teeth of the central spindle and the internal teeth of the housing or the socket.
  • the product outlet is located above or at the level of the product inlet.
  • the dispersion takes place in the process zone between a central spindle with teeth, at least one rotating planetary spindle with teeth and a housing with internal teeth or at least one bush with internal teeth.
  • the suspension is conveyed through the process zone of the planetary roller mixer by means of a conveyor device, which is arranged upstream of the product inlet outside the housing of the planetary roller mixer, and a metering device, in particular a metering valve or a pump, which is connected downstream of the conveyor device.
  • the pressure in the planetary roller mixer is greater in the vicinity of the product inlet than on the product outlet side; in particular, the greatest pressure is applied in the planetary roller mixer at the product inlet.
  • the dispersion takes place preferably at a product inlet pressure between 0.2 and 10 bar.
  • the suspension When exiting the planetary roller mixer, the suspension preferably has a temperature between 5 ° C and 150 ° C.
  • premixed UV offset paste is processed in the planetary roller mixer, with organic pigment and fillers being dispersed in the printing ink to particle sizes below 10 micrometers. A product temperature of 60 ° C is not exceeded.
  • Conventional offset printing inks can also be processed in the planetary roller mixer, in which, for example, pearled carbon black is incorporated into a binding agent and reduced to particle sizes smaller than 15 micrometers is crushed. A maximum permissible product temperature of 120 ° C is not exceeded.
  • lubricating grease can be processed in which a thickener and / or additives are homogenized to particle sizes of 10 to 15 micrometers.
  • suspensions with a viscosity of 0.1 to 50 Pa * s, in particular 0.7 to 6 Pa * s are fed to the planetary roller mixer.
  • the viscosity can be determined with a rheometer at temperatures of 25 to 90 ° C., in particular 50-70 ° C., and a shear rate of 450 1 / s.
  • a filling paste to be processed with a viscosity of 4 Pa * s at 50 ° C and 450 1 / s can be fed to a pump with an extrusion device and fed from there to the planetary roller mixer.
  • a highly viscous paste with a viscosity of 50 Pa * s at 25 ° C and 450 1 / s can be fed to the planetary roller mixer via an extrusion device without an intermediate pump.
  • Pre-mixed suspension is preferably processed in the planetary roller mixer in a premixer, the suspension being premixed outside of the planetary roller mixer in a premixer upstream of the planetary roller mixer and conveyed to the planetary roller mixer by means of a conveyor device via a product inlet line.
  • the suspension is thus further dispersed in the planetary roller mixer, but reaches the planetary roller mixer as a premixed suspension.
  • the planetary roller mixer can therefore only from a product inlet line are fed.
  • the planetary roller mixer does not have to have a solids inlet.
  • the suspension is advantageously pumped into the planetary roller mixer and / or the suspension is conveyed through the planetary roller mixer by means of a conveying device, in particular a pump and / or pressing device.
  • the product flow between product inlet and product outlet takes place in the direction of the drive device.
  • the suspension can pass through the planetary roller mixer at least twice, for example in multi-pass operation or in circulation operation.
  • Figure 1 shows a schematic representation of a planetary roller mixer 1 in sectional view.
  • the planetary roller mixer 1 comprises a central spindle 2 with toothing 3, a multiplicity of rotating planetary spindles 4, each of which has a toothing 5, and a housing 6 with a bush 8, which has internal toothing 7.
  • the toothing 5 of the planetary spindles 4 is in operative connection with the toothing 3 of the central spindle 2, on the one hand, and with the internal toothing 7, on the other hand.
  • Temperature control channels 22 are provided in the central spindle.
  • the process zone 12 is located between the spindles 2, 4 and the socket 8 and has an empty volume 11 of approximately 1-10 l.
  • Figure 2 shows a schematic representation of a first example of a planetary roller mixer 1 in a side view.
  • the housing 6 and the spindles 2, 4, not explicitly shown, are oriented vertically in the operating position.
  • the planetary roller mixer 1 comprises a product inlet 9 in a first end region 40 of the housing 6 and a product outlet 10 in a second end region 41 of the housing 6, the product outlet 10 being arranged above the product inlet 9.
  • the process zone 12 of the dispersing device 1 can essentially be completely filled during operation.
  • the central spindle 2 is led out of the housing 6 in the upper region of the dispersing device 1 and can be driven by a drive device 18, here a motor.
  • a seal in particular a mechanical seal, is provided between the central spindle 2 and a bearing housing 16 or a gear which is not explicitly shown.
  • Figure 3 shows a schematic representation of a second example of a planetary roller mixer 1 in a side view.
  • the housing 6 and the spindles 2, 4, which are not explicitly shown, are aligned horizontally in the operating position.
  • the planetary roller mixer 1 comprises a product inlet 9 and a product outlet 10, the product outlet 10 having a product discharge line 13 provided which comprises an overflow 14.
  • the product discharge line 13 is arranged at least partially above a product inlet line 15 provided at the product inlet 9, so that the process zone 12 of the planetary roller mixer 1, which is not explicitly shown, can be essentially completely filled with suspension.
  • the drive device 18 for the central spindle 2 provides a power range of up to 90 kW.
  • Figure 4 shows a schematic flow diagram of a first example of a production system 100 for processing a suspension.
  • the production system 100 comprises a conveying device, here a pump 19, for example a screw conveyor, which is provided with a downstream metering valve, and a planetary roller mixer 1, in the example shown in a horizontal arrangement, with a central spindle with toothing, not explicitly shown, revolving Planetary spindle 4 with toothing 5 and a housing 6 with not explicitly shown internal toothing 7 (see Figure 1 ).
  • a conveying device here a pump 19, for example a screw conveyor, which is provided with a downstream metering valve, and a planetary roller mixer 1, in the example shown in a horizontal arrangement, with a central spindle with toothing, not explicitly shown, revolving Planetary spindle 4 with toothing 5 and a housing 6 with not explicitly shown internal toothing 7 (see Figure 1 ).
  • the planetary roller mixer 1 comprises a product inlet 9, which is equipped with a product inlet line 15 and a product outlet 10 with a product discharge line 13. The entire suspension can be guided into the planetary roller mixer 1 via the product inlet line 15 from the pump 19.
  • the production plant 100 also includes a premixer 20. This has at least one stirring tool 24 which is driven by at least one motor 25.
  • the pump 19 pumps premixed suspension from the premixer 20 into the planetary roller mixer 1.
  • the pump 19 also ensures that the suspension is conveyed by the planetary roller mixer 1 in a direction 23 from the product inlet 9 to the product outlet 10.
  • the motor 18 causes the spindles to rotate, but not the propulsion of the suspension in the dispersing device 1.
  • Figure 5 shows a schematic flow diagram of a second example of a production plant 100 for processing a suspension.
  • the production system 100 comprises a pump 19 as a conveyor device 19, for example a screw conveyor which is provided with a downstream metering valve, as well as a planetary roller mixer 1, in the example shown in a horizontal arrangement, with a central spindle with toothing, not explicitly shown, revolving planetary spindle 4 with toothing 5 and a housing 6 with not explicitly shown internal toothing 7 (see Figure 1 ).
  • a pump 19 as a conveyor device 19, for example a screw conveyor which is provided with a downstream metering valve, as well as a planetary roller mixer 1, in the example shown in a horizontal arrangement, with a central spindle with toothing, not explicitly shown, revolving planetary spindle 4 with toothing 5 and a housing 6 with not explicitly shown internal toothing 7 (see Figure 1 ).
  • the planetary roller mixer 1 comprises a product inlet 9, which is equipped with a product inlet line 15 and a product outlet 10. The entire suspension can be guided from the pump 19 into the planetary roller mixer 1 via the product inlet line 15.
  • the production plant 100 also includes a premixer 20.
  • the product outlet 10 is connected to a product line 21, via which suspension can be passed from the planetary roller mixer 1 into the premixer 20.
  • the more highly homogenized and / or dispersed suspension is mixed with the less homogenized and / or dispersed suspension.
  • the suspension is fed from the premixer 20 into the pump 19, from where the suspension is passed through a product inlet line 15 into the planetary roller mixer 1.
  • the production plant 100 can be operated in the circulation process until the suspension has the desired quality.
  • Figure 6 shows a schematic flow diagram of a third example of a production plant 100 for processing a suspension.
  • the production plant 100 comprises a planetary roller mixer 1, in the example shown in a horizontal arrangement.
  • a squeezing device 27 can be provided as the conveying device 19 and a pump 28 connected in series for this purpose can be provided as the metering device. Highly viscous suspension is pressed out of a storage container 31 by means of a stamp element 29 which is operated by a piston 30. The pump 28 ensures that the suspension is fed evenly to the planetary roller mixer 1 via the product inlet line 15.
  • the processed suspension is collected in a collecting container 32.
  • the suspension can be fed back to the conveying device 19.
  • Figure 7 shows a schematic representation of a third planetary roller mixer 1 in a perspective view.
  • the central spindle 2, the planetary spindle 4, the housing 6 have straight teeth 3, 5, 7. During operation, the toothing 3, 5, 7 cannot bring about any propulsion of the suspension.
  • Figure 8 shows a schematic representation of part of the third example of a planetary roller mixer in a perspective view.
  • the planetary roller mixer 1 comprises, as planetary spindles 4, segments 4a, 4b, 4c, 4d which are arranged one behind the other in the longitudinal direction 33 and offset from one another in the circumferential direction 34.
  • the planetary spindles 4 have straight teeth 5.
  • the teeth 5 run parallel to the longitudinal axis 32 of the central spindle 2 and therefore do not cause any propulsion.
  • Figure 9 shows the third example of the planetary roller mixer 1 in a sectional view.
  • the product discharge line 13 is designed as an overflow 35.
  • the product discharge line 13 is arranged at least partially above the product inlet line 15 provided at the product inlet 9.
  • the process zone 12 is sealed with a mechanical seal 37 with respect to the bearing 36 of the central spindle 2.
  • the central spindle 2 can be tempered by means of a tempering lance 39.
  • the product flow between product inlet 9 and product outlet 10 takes place in the direction 38 of the drive device, which is not explicitly shown.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Accessories For Mixers (AREA)

Claims (14)

  1. Une installation de production (100) pour traiter une suspension avec un mélangeur à rouleaux planétaires (1) comprenant
    un boîtier (6),
    - qui est sensiblement cylindrique à l'intérieur et pourvu d'une denture intérieure (7), ou bien
    - comprenant au moins une douille (8) sensiblement cylindrique avec une denture intérieure (7) ;
    au moins une entrée de produit (9) dans une première partie d'extrémité (40) du boîtier (6) ; et
    au moins une sortie de produit (10) dans une deuxième région d'extrémité (41) du boîtier (6) ;
    une broche centrale (2) avec une denture (3) disposée dans le boîtier (6) ;
    au moins une broche planétaire (4) avec une denture (5) disposée dans le boîtier (6) ;
    dans lequel la denture (5) de la broche planétaire (4) est reliée fonctionnellement à la fois à la denture (3) de la broche centrale (2) et à la denture intérieure (7) du boîtier (6) ou de la douille (8) ;
    dans lequel la sortie de produit (10) est disposée au-dessus ou au niveau de l'entrée de produit (9) lorsqu'elle fonctionne comme prévu ; et
    dans lequel l'installation de production (100) comprend un dispositif de transport (19) qui est disposé à l'extérieur du boîtier (6) en amont de l'entrée de produit (9) et qui est en liaison fluidique avec l'entrée de produit (9), et l'installation de production comprend un dispositif de dosage, en particulier une pompe (28) ou une vanne de dosage, qui est raccordé en aval du dispositif de transport (19), caractérisé en ce que
    le boîtier et les broches du mélangeur à rouleaux planétaires (1) sont disposés horizontalement pendant l'utilisation prévue et en ce que le mélangeur à rouleaux planétaires (1) comprend un dispositif d'entraînement (18) pour entraîner la broche centrale (2), lequel dispositif d'entraînement est disposé plus près de la sortie du produit (10) que de l'entrée du produit (9).
  2. Installation de production selon la revendication 1, dans laquelle le dispositif de transport (19) est un dispositif de pressage (27) avec un élément d'estampage (29) et un récipient de stockage (31).
  3. Installation de production selon la revendication 2, dans laquelle le dispositif de pressage (27) présente une sortie qui peut être fermée par une vanne.
  4. Installation de production selon l'une des revendications précédentes, dans laquelle la sortie du produit (10) est disposée au-dessus de l'entrée du produit (9).
  5. Installation de production selon l'une des revendications précédentes,
    dans laquelle la broche centrale (2) est reliée, du côté de la sortie de produit (10), à un dispositif d'entraînement (18), et
    de préférence, la broche centrale (2) du côté de l'entrée du produit (9) n'a aucune liaison avec l'espace extérieur entourant le boîtier (6).
  6. Installation de production selon l'une des revendications précédentes, dans laquelle un joint mécanique (37) est prévu entre la broche centrale (2) et un boîtier de palier (16) ou un mécanisme d'engrenage.
  7. Installation de production selon l'une des revendications précédentes, dans laquelle l'installation de production (100) comprend un prémélangeur (20).
  8. Installation de production selon l'une des revendications précédentes, dans laquelle la broche centrale (2), la broche planétaire (4), le boîtier (6) et/ou la douille (8) présentent au moins une zone dans laquelle la denture (3, 5, 7) est conçue de telle sorte qu'en fonctionnement, la denture (3, 5, 7) ne peut pas entraîner la suspension, cette zone présentant notamment une denture droite.
  9. Installation de production selon l'une des revendications précédentes, dans laquelle le mélangeur à rouleaux planétaires (1) comprend au moins une broche planétaire (4) constituée de segments (4a, 4b, 4c, 4d) disposés sur un axe commun ; et/ou de segments (4a, 4b, 4c, 4d) avec des dentures (5) qui sont reliées à la fois à la denture (3) de la broche centrale (2) et à la denture intérieure (7) du boîtier (6) ou de la douille (6), respectivement, et à la denture intérieure (7) du boîtier (6), ou de la douille (8), et dans lequel les segments (4a, 4b, 4c, 4d) sont décalés les uns par rapport aux autres dans la direction circonférentielle (34) et sont disposés les uns derrière les autres dans la direction longitudinale (33).
  10. Procédé de dispersion de suspensions comprenant au moins l'étape suivante :
    Dispersion d'une suspension dans une installation de production avec un mélangeur à rouleaux planétaires (1) et un dispositif de transport (27) et un dispositif de dosage, selon l'une des revendications 1 à 9, comportant un boîtier (6)
    - qui est sensiblement cylindrique à l'intérieur et pourvu d'une denture intérieure (7), ou bien
    - comprenant au moins une douille (8) sensiblement cylindrique avec une denture intérieure (7) ;
    au moins une entrée de produit (9) dans une première partie d'extrémité (40) du boîtier (6) ; et
    au moins une sortie de produit (10) dans une deuxième région d'extrémité (41) du boîtier (6) ;
    une broche centrale (2) avec une denture (3) disposée dans le boîtier (6) ;
    au moins une broche planétaire (4) avec une denture (5) disposée dans le boîtier ;
    dans lequel la denture (5) de la broche planétaire (4) est reliée fonctionnellement à la fois à la denture (3) de la broche centrale (2) et à la denture intérieure (7) du boîtier (6) ou de la douille (8) ;
    dans lequel la sortie du produit (10) est disposée au-dessus ou au niveau de l'entrée du produit (9) pendant l'utilisation prévue ;
    avec une zone de traitement (12), dans laquelle essentiellement toute la zone de traitement (12) du dispositif de dispersion (1) est remplie de suspension, dans laquelle la suspension est transportée à travers la zone de traitement (12) du mélangeur à rouleaux planétaires (1) au moyen d'un dispositif de transport (19), qui est disposé en amont de l'entrée de produit (9) à l'extérieur du boîtier du mélangeur à rouleaux planétaires (1), et d'un dispositif de dosage, en particulier une soupape de dosage ou une pompe, qui est monté en aval du dispositif de transport (19) et dans lequel le mélangeur à rouleaux planétaires (1) présente un dispositif d'entraînement (18) sur un côté de la broche centrale (2) pour l'entraînement de la broche centrale (2), et le flux de produit entre l'entrée de produit (9) et la sortie de produit (10) a lieu dans la direction (38) du dispositif d'entraînement (18).
  11. Procédé selon la revendication 10,
    dans lequel la suspension est transportée à travers la zone de traitement (12) du mélangeur à rouleaux planétaires (1) au moyen d'un dispositif de transport (19), à savoir un dispositif de pressage (27) avec un élément d'estampage (29) et un récipient de stockage (31), qui est disposé à l'extérieur du boîtier du mélangeur à rouleaux planétaires (1) en amont de l'entrée de produit (9).
  12. Procédé selon la revendication 10 ou 11, dans lequel la pression dans le mélangeur à rouleaux planétaires à proximité de l'entrée du produit est supérieure à celle du côté de la sortie du produit, et dans lequel la suspension est dispersée en particulier à une pression d'entrée du produit comprise entre 0,2 et 10 bars.
  13. Procédé selon les revendications 10 à 12, dans lequel la suspension prémélangée dans un prémélangeur (20) est traitée dans le mélangeur à rouleaux planétaires (1).
  14. Procédé selon l'une des revendications 10 à 13, dans lequel la suspension est pompée dans le mélangeur à rouleaux planétaires (1) et/ou la suspension est transportée à travers la zone de traitement (12) du mélangeur à rouleaux planétaires (1) au moyen d'une pompe qui est disposée à l'extérieur du boîtier du mélangeur à rouleaux planétaires (1) en amont de l'entrée du produit (9).
EP17818578.1A 2016-12-23 2017-12-21 Installation de production et procédé Active EP3558503B1 (fr)

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EP16206567.6A EP3338881A1 (fr) 2016-12-23 2016-12-23 Mélangeur planétaire, installation de production et procédé
PCT/EP2017/084053 WO2018115260A2 (fr) 2016-12-23 2017-12-21 Installation de production et procédé

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CN107601588A (zh) * 2017-08-09 2018-01-19 安徽理工大学 一种污水净化处理方法及装置
DE102019203217A1 (de) * 2019-03-08 2020-09-10 Krones Ag Etikettiermaschine zum Aufbringen von Etiketten auf Gefäße unter Verwendung von Kaltleim
CN111530356A (zh) * 2020-05-12 2020-08-14 南阳市中心医院 一种肿瘤病人化疗护理装置
CN111545106B (zh) * 2020-05-14 2022-09-13 杨扬 一种酒坛封口用黄泥处理装置
CN112169642A (zh) * 2020-10-05 2021-01-05 新昌县奔力机械有限公司 一种应用于化工行业制备石墨烯的均质剪切机
CN112354499B (zh) * 2020-10-20 2022-11-01 浙江美之源化妆品有限公司 一种香水加工用催陈装置

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CN110099736A (zh) 2019-08-06
WO2018115260A3 (fr) 2018-08-16
EP3558503A2 (fr) 2019-10-30
WO2018115260A2 (fr) 2018-06-28
KR20190095953A (ko) 2019-08-16
EP3338881A1 (fr) 2018-06-27
US20190381467A1 (en) 2019-12-19

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