EP4038233B1 - Plant and method for applying glue to a fibrous material - Google Patents

Plant and method for applying glue to a fibrous material Download PDF

Info

Publication number
EP4038233B1
EP4038233B1 EP20754172.3A EP20754172A EP4038233B1 EP 4038233 B1 EP4038233 B1 EP 4038233B1 EP 20754172 A EP20754172 A EP 20754172A EP 4038233 B1 EP4038233 B1 EP 4038233B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
cyclone
cone
glue
gluing device
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
EP20754172.3A
Other languages
German (de)
French (fr)
Other versions
EP4038233A1 (en
EP4038233C0 (en
Inventor
Clemens SEIDL
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.)
Andritz AG
Original Assignee
Andritz AG
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 Andritz AG filed Critical Andritz AG
Publication of EP4038233A1 publication Critical patent/EP4038233A1/en
Application granted granted Critical
Publication of EP4038233B1 publication Critical patent/EP4038233B1/en
Publication of EP4038233C0 publication Critical patent/EP4038233C0/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/0263—Mixing the material with binding agent by spraying the agent on the falling material, e.g. with the material sliding along an inclined surface, using rotating elements or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • 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
    • B01F25/70—Spray-mixers, e.g. for mixing intersecting sheets of material
    • B01F25/72—Spray-mixers, e.g. for mixing intersecting sheets of material with nozzles
    • B01F25/721—Spray-mixers, e.g. for mixing intersecting sheets of material with nozzles for spraying a fluid on falling particles or on a liquid curtain
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/22—Apparatus in which the axial direction of the vortex is reversed with cleaning means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
    • B08B9/0808—Cleaning containers having tubular shape, e.g. casks, barrels, drums by methods involving the use of tools, e.g. by brushes, scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B27N1/029—Feeding; Proportioning; Controlling
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/023—Cleaning wood chips or other raw materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B04C2009/008—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with injection or suction of gas or liquid into the cyclone

Definitions

  • the invention relates to a method for applying glue to a fibrous material, in which a raw material to be processed, e.g. wood chips, is fed in a fibrous material-steam mixture via a blow line from a refiner to a gluing device and further to a dryer.
  • the invention also relates to a plant for processing fibrous materials with a refiner which is connected to a dryer via a blow line, with a gluing device being arranged in the blow line.
  • the production of fiber materials typically includes the work steps of producing the fiber material, gluing, drying and finally shaping or pressing.
  • the raw material eg wood chips
  • the raw material eg wood chips
  • a pre-steamer e.g. a pre-steamer
  • acetic acids and small amounts of acetic anhydride can form.
  • the wood chips are then defibrated in a refiner, for example a disc refiner, and then fed to a dryer via a blow line, in which the gluing takes place by spraying in the adhesive.
  • a plurality of gluing nozzles are arranged in a ring around the blow line.
  • Urea-formaldehyde resins which can be reinforced with melamine and/or phenol, or methylenediphynyldiisocyanates (MDI), for example, are used as adhesives.
  • the EP 2 179 826 B1 discloses a system or method, in which lignocellulose-containing comminution products are fed to a gluing device downstream of the dryer. In order to prevent products from sticking in the lines, there is a twist flap in the pipeline to ensure a rotating air flow in the gluing zone, with the gluing zone opening concentrically into a transport pipeline and another air flow being introduced through the annular gap formed in this way.
  • the AT 514 329 B1 describes a plant and a method for processing fibrous materials with a refiner, which is connected via a blow line with a dryer, characterized in that in the blow line a device for Discharging part of the steam is arranged.
  • the object of this invention is to prevent clumping of the fibers, which is solved by the open connection of the refiner and the dryer through the blow line.
  • a device for gluing the fibrous material-steam mixture is arranged in the blow line upstream of the dryer.
  • the JPH04148904A discloses a coating granulator.
  • a dispersion nozzle is attached to a granulation chamber.
  • a powder is fed through a nozzle of the dispersion nozzle.
  • a gap is formed between the nozzle and the dispersion nozzle, through which the high-pressure mixed gas, consisting of coating material and binder, is fed from the surrounding gas box to the dispersion nozzle.
  • Binding agent and coating material are evenly distributed on the surface of the powder in the gas box or in the area of the gap between the nozzle and the dispersion nozzle.
  • the gas then flows into the granulation chamber.
  • the granulation chamber is fed with gas tangentially via a blower - to form a rotating flow in the granulation chamber.
  • the powder follows the rotating flow in the granulation chamber, causing agglomeration.
  • the DE1 9930800 A1 discloses a process for the production of fibreboards, in which fibers are conveyed with steam pressure through a blow-line into a tube dryer and the end section of the tube dryer is designed as a glue-wetting zone.
  • the transport speed of the fiber mixture is reduced by increasing the flow cross-section of the tube dryer and a turbulent flow is generated, and the turbulence is further increased by injecting additional air.
  • the EP2431144 A1 describes a method and a device for the wet gluing of wood fibers, the wood fibers being transported into the gluing zone in a conveying pipe in a stream of saturated steam.
  • the aim of the invention is a system and a method that allows an efficient distribution of the glue on the pulp in a pulp-steam mixture.
  • the best possible use of chemicals or glue should be achieved, with little contamination of the inner wall of the gluing device, with a minimal energy loss, ie a minimal pressure drop in the gluing device.
  • the fibrous material-steam mixture is fed to the gluing device in a circumferential direction and the fibrous material-steam mixture in the gluing device forms a swirling flow around and along an axis of the gluing device.
  • the gluing device typically has an essentially rotationally symmetrical inner contour around the axis of the gluing device, with the axis of rotational symmetry defining the axis of the gluing device.
  • the fibrous material-steam mixture is fed to the circumference in the circumferential direction of the gluing device and carried out in the direction of the axis of the gluing device.
  • the fibrous material-steam mixture forms a swirling flow around and along an axis of the gluing device.
  • a swirl flow is imposed in an energy-efficient manner, i.e. with a low pressure loss, and is advantageous compared to prior-art solutions, such as a swirl flap.
  • the glue is applied to the fibrous material in a gluing device designed as a cyclone, with the cyclone comprising an entry area, a cone and a cone exit area.
  • the cyclone is a favorable embodiment of a gluing device which has an essentially rotationally symmetrical inner contour around the axis of the gluing device.
  • the cyclone allows for a low pressure loss and an energy-efficient swirl flow in the gluing device.
  • the cyclone comprises a dip tube, with part of the vapor of the fibrous material-steam mixture being able to be discharged from the cyclone via the dip tube.
  • steam with a high energy content can be discharged from the gluing device or the cyclone via the immersion tube and used efficiently in the system, in particular in the pre-steamer and/or in the boiler, and allows energy recovery.
  • the pulp is typically fed through a pre-steamer, a digester and a refiner connected to the dryer via a blow line.
  • the cyclone can also be designed without a dip tube.
  • a favorable embodiment of the method is characterized in that the glue is supplied to at least one nozzle via a nozzle pipe, the nozzle pipe being in the vicinity of and in the direction of an axis of symmetry of the cyclone and preferably is formed along the axis of symmetry of the cyclone and the at least one nozzle is arranged in a low-fiber area, preferably in the cone outlet area.
  • the glue is supplied to at least one nozzle via a nozzle pipe, the nozzle pipe being in the vicinity of and in the direction of an axis of symmetry of the cyclone and preferably is formed along the axis of symmetry of the cyclone and the at least one nozzle is arranged in a low-fiber area, preferably in the cone outlet area.
  • there is a fully developed swirl flow in the cone area and in particular in the cone outlet area with the fibrous material of the fibrous material-steam mixture being concentrated on or near the inner wall of the gluing device or the cyclone and correspondingly forming a fiber ring on
  • the glue can be applied to the fibrous material or the fiber ring from the inside and advantageously allows efficient distribution or Application of the glue with the best possible use of chemicals and glue and a low level of soiling of the inner wall of the gluing device.
  • the glue can be sprayed in the direction of the axis of the gluing device and/or in the direction of an inner wall of the gluing device, ie from the inside radially outwards in the direction of the fiber ring.
  • nozzles are arranged in an area low in fibrous matter. Due to this arrangement outside of the fibrous ring, the nozzles are exposed to far less abrasion from the fibrous material.
  • nozzles are subject to abrasion by the fibrous material and must be protected by appropriate measures, for example the nozzles not protruding or protruding into the flow space when the nozzles are arranged in the wall region of the gluing device.
  • the glue is fed to the nozzle or nozzles via a nozzle tube, which can be guided through the immersion tube if there is an immersion tube, whereby this allows minimal influencing or disruption of the swirl flow within the gluing device or the cyclone.
  • a favorable embodiment of the method is characterized in that live steam is also supplied to the at least one nozzle.
  • live steam is advantageously used as the propellant.
  • pollutants such as VOC (volatile organic compounds), among other things, can be released from the pulp or pass into the vapor phase in the refiner. This leads to a pollutant load in the Vapor phase, which is separated from the material to be processed in the dryer and requires environmentally friendly processing or cleaning.
  • live steam is used as the propellant of the two-component nozzle, as a result of which unloaded live steam is supplied to the gluing device or the cyclone in the cone outlet area.
  • contaminated steam from the fibrous material-steam mixture can be carried out through the dip tube from the gluing device or the cyclone and can be used in the system, in particular in the pre-steamer and/or the digester.
  • the dryer can be supplied with a fibrous material-steam mixture that has a lower pollutant load than the fibrous material-steam mixture that is fed to the gluing device.
  • a further advantageous embodiment of the method is characterized in that the glue is supplied to at least one nozzle in the area of the cone, preferably in the cone outlet area, with the nozzle being arranged in the cone.
  • the at least one nozzle is arranged in the wall of the cone and the glue is applied to the fibrous material or to the fiber ring, with the glue advantageously being distributed or applied efficiently.
  • the aim of the invention is also a plant for the efficient processing of fibrous material with a refiner, which is connected to a dryer via a blow line, with a gluing device being arranged in the blow line.
  • the gluing device comprises an entry area on the periphery of the gluing device and an exit area formed in the axial direction of the gluing device.
  • this allows the glue to be distributed efficiently over the fibrous material, with the best possible use of chemicals and glue being achieved, since the fibrous material-steam mixture fed into the entry area on the circumference and in the circumferential direction of the gluing device has a twisting flow around and along an axis in the gluing device of the gluing device, the fibrous material-steam mixture leaving the gluing device in the axial direction through the outlet area.
  • the gluing device is a cyclone, with the cyclone comprising the inlet area, a cone and an outlet area designed as a cone outlet area.
  • the cyclone has an im substantially rotationally symmetrical inner contour, the axis of rotational symmetry defining the axis of the gluing device or of the cyclone.
  • the fibrous material-steam mixture fed to the periphery in the circumferential direction of the gluing device via the inlet area forms a swirling flow around and along the axis of the gluing device and is discharged in the direction of the axis of the gluing device via the cone outlet area. This is done in an energy-efficient manner, ie with a low pressure drop.
  • the cyclone is designed with a dip tube, part of the vapor of the fibrous material-steam mixture can also be discharged from the cyclone via the dip tube. In this way, steam with a high energy content can be discharged from the gluing device or the cyclone via the dip pipe and used efficiently in the system, in particular in the pre-steamer and/or the boiler.
  • the cyclone can also be designed without a dip tube.
  • the cyclone comprises a nozzle tube and the nozzle tube is formed near and in the direction of an axis of symmetry of the cyclone, the nozzle tube preferably being formed along the axis of symmetry of the cyclone (6).
  • the glue can be applied efficiently from the inside to the fibrous material or the surrounding fiber ring, with only a minimal influence on the swirl flow .
  • the nozzle tube extends into the cone, preferably into the cone outlet area, and has at least one nozzle for applying glue.
  • the glue can be applied from the inside to the fibrous material or to the fiber ring and minimizes soiling of the inner wall of the gluing device .
  • the nozzles are also subject to far less abrasion from the pulp.
  • the glue is fed to the nozzle or nozzles via a nozzle tube that is routed through the optional dip tube of the cyclone, which allows minimal influencing or disruption of the swirl flow within the gluing device or the cyclone.
  • An equally advantageous embodiment of the system is characterized in that at least one nozzle for applying glue is arranged in the area of the cone, preferably in the cone outlet area, with the nozzle being arranged in the wall of the cone.
  • the at least one nozzle is arranged in the wall of the cone and the glue is applied to the fibrous material or to the fiber ring, with the glue being injected from the outside inwards or radially inwards.
  • a favorable configuration of the system is characterized in that a helical scraper for cleaning the inner wall of the cyclone is arranged in the cyclone so that it can rotate about an axis. Any caking or deposits on the inner wall of the cyclone can be scraped off continuously or periodically.
  • this enables longer, continuous operation and reduces the need for cleaning.
  • FIG. 1 shows in detail 1 a plant according to the prior art with a pre-steamer 15, a digester 16 and a refiner 2, which is connected to the dryer 4 via a blow line 1, with a cyclone 6 being arranged between the dryer 4 and the refiner 2.
  • the blow line 1 between the cyclone 6 and the dryer 4 has a blow valve 17 and a pressure measuring device 19 upstream of a gluing device 3 .
  • the cyclone 6 is designed with a cone 8 and a dip tube 7 .
  • FIG. 2 shows a system according to the invention with a pre-steamer 15, a digester 16 and a refiner 2, which is connected to the dryer 4 via a blow line 1, with a gluing device 3 being arranged between the dryer 4 and the refiner 2 is.
  • the gluing device 3 is advantageously designed as a cyclone 6 and is designed with a cone 8 and an optional immersion tube 7 .
  • the nozzle tube 10 is guided through the optional immersion tube 7, with at least one nozzle 11 being arranged at the end of the nozzle tube 10.
  • the 3 shows a gluing device 3 according to the invention in detail, which is advantageously designed as a cyclone 6 .
  • the cyclone 6 comprises an entry area 20, a cone 8, an exit area 13 designed as a cone exit area 9, and an optional immersion tube 7.
  • the fibrous material-steam mixture is fed to the gluing device 3 in the circumferential direction through the entry area 20, as a result of which the fibrous material Steam mixture in the cyclone 6 forms a swirl flow around and along the axis 5 of the cyclone 6.
  • a nozzle tube 10 is arranged inside the optional immersion tube 7, with the nozzle tube 10 being able to extend into the cone 8, preferably into the cone outlet region 9, and the glue being supplied to the at least one nozzle 11 through the nozzle tube 10.
  • the nozzle 11 arranged in the interior of the swirl flow applies the glue to the fibrous material, with the glue flowing in the direction of the axis 5 and/or in the direction of the inner wall of the gluing device 3 and in particular from the inside radially outwards in the direction of the inner wall of the Cone 8 forming fiber ring is sprayed.
  • the at least one nozzle 11 can alternatively or additionally also be arranged in the area of the wall of the cone 8 , preferably in the cone outlet area 9 . In this way, the glue can be applied to the fibrous material, with the glue then being injected from the outside inwards or radially inwards.
  • the vapor of the fibrous material-vapour mixture which may contain pollutants, can be continuously discharged from the gluing device 3 through the optional immersion tube 7 and can be used in the system, in particular in the pre-steamer 15 and/or the boiler 16 .
  • live steam is used as a propellant in a nozzle 11 designed, for example, as a two-component nozzle, and live steam is thus introduced into the cyclone 6, the fibrous material-steam mixture then fed to the dryer 4 having a lower pollutant load than the fibrous material-steam mixture fed to the cyclone 6.
  • a helical scraper 14 for cleaning the inner wall of the cyclone 6 can be arranged in the cyclone 6 so as to be rotatable about the axis 5 .
  • the cyclone 6 comprises an inlet area 20, a cone 8, an outlet area 13 configured as a cone outlet area 9.
  • the fibrous material-steam mixture is fed to the gluing device 3 in the circumferential direction through the entry area 20, whereby the fibrous material-steam mixture then flows in the cyclone 6 forms a swirl flow around and along the axis 5 of the cyclone 6 .
  • the nozzle tube 10 extends into the cone 8 , preferably into the cone outlet region 9 , and the glue is supplied to the at least one nozzle 11 through the nozzle tube 10 .
  • the present invention offers numerous advantages over the prior art. It allows the glue to be distributed efficiently, with minimal use of chemicals or glue leading to an optimal result. In addition, according to the invention, there is only minimal contamination of the inner wall of the gluing device or cyclone by glue. The invention also allows a high thermal efficiency of the system, since steam can be discharged from the gluing device for further use. The gluing device according to the invention also allows any pollutant load present in the fibrous material-steam mixture to be reduced before it is introduced into the dryer. In addition, the swirl flow in the gluing device is set with a minimum pressure loss. Finally, the invention allows for an optimal arrangement of the nozzles, with the nozzles only being subjected to minimal abrasion by the fibrous material to be glued.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Aufbringen von Leim auf einen Faserstoff, bei dem ein zu verarbeitendes Rohmaterial, z.B. Hackschnitzel, in einem Faserstoff-Dampf-Gemisch über eine Blasleitung von einem Refiner zu einer Beleimvorrichtung und weiter zu einem Trockner geführt wird. Die Erfindung betrifft ebenso eine Anlage zum Verarbeiten von Faserstoffen mit einem Refiner, der über eine Blasleitung mit einem Trockner verbunden ist, wobei in der Blasleitung eine Beleimvorrichtung angeordnet ist.The invention relates to a method for applying glue to a fibrous material, in which a raw material to be processed, e.g. wood chips, is fed in a fibrous material-steam mixture via a blow line from a refiner to a gluing device and further to a dryer. The invention also relates to a plant for processing fibrous materials with a refiner which is connected to a dryer via a blow line, with a gluing device being arranged in the blow line.

Wie in der EP 2 939 807 B1 beschrieben umfasst die Herstellung von Faserwerkstoffen, z.B. in Plattenform, typischerweise die Arbeitsschritte Erzeugung des Faserstoffs, Beleimung, Trocknung und schließlich Formung bzw. Verpressung. Zur Erzeugung des Faserstoffs wird das Rohmaterial, z.B. Hackschnitzel, in einem Vordämpfer gedämpft und in einem Kocher gekocht. Aufgrund der thermischen Einwirkung können sich dabei unter anderem Essigsäuren sowie in geringen Mengen Acetan-hydrid bilden. Danach werden die Hackschnitzel in einem Refiner, z.B. Scheibenrefiner, zerfasert und über eine Blasleitung, in der die Beleimung durch Einsprühen des Klebstoffes erfolgt, nachfolgend einem Trockner zugeführt. Dabei werden im Stand der Technik eine Mehrzahl von Beleimungsdüsen ringförmig um die Blasleitung angeordnet. Als Klebestoffe werden z.B. Harnstoff-Formaldehyd Harze (UF), die mit Melamin und/oder Phenol verstärkt ausgeführt sein können, oder Methylendiphynyldiisozianate (MDI) verwendet.Like in the EP 2 939 807 B1 describes the production of fiber materials, for example in board form, typically includes the work steps of producing the fiber material, gluing, drying and finally shaping or pressing. To produce the fibrous material, the raw material, eg wood chips, is steamed in a pre-steamer and boiled in a cooker. Due to the thermal effect, acetic acids and small amounts of acetic anhydride, among other things, can form. The wood chips are then defibrated in a refiner, for example a disc refiner, and then fed to a dryer via a blow line, in which the gluing takes place by spraying in the adhesive. In the prior art, a plurality of gluing nozzles are arranged in a ring around the blow line. Urea-formaldehyde resins (UF), which can be reinforced with melamine and/or phenol, or methylenediphynyldiisocyanates (MDI), for example, are used as adhesives.

Die EP 2 179 826 B1 offenbart eine Anlage bzw. Verfahren, wobei lignozellulosehaltige Zerkleinerungsprodukte einer dem Trockner nachfolgenden Beleimungseinrichtung zugeführt werden. Um ein Anhaften von Produkten in den Leitungen zu vermeiden, befindet sich in der Rohrleitung eine Drallklappe um in der Beleimungszone einen rotierenden Luftstrom zu gewährleisten, wobei die Beleimungszone konzentrisch in einer Transportrohrleitung mündet und durch den so gebildeten Ringspalt ein weiterer Luftstrom einzubringen ist.The EP 2 179 826 B1 discloses a system or method, in which lignocellulose-containing comminution products are fed to a gluing device downstream of the dryer. In order to prevent products from sticking in the lines, there is a twist flap in the pipeline to ensure a rotating air flow in the gluing zone, with the gluing zone opening concentrically into a transport pipeline and another air flow being introduced through the annular gap formed in this way.

Die AT 514 329 B1 beschreibt eine Anlage bzw. ein Verfahren zum Verarbeiten von Faserstoffen mit einem Refiner, der über eine Blasleitung mit einem Trockner verbunden ist, dadurch gekennzeichnet, dass in der Blasleitung eine Einrichtung zum Austragen eines Teils des Dampfes angeordnet ist. Dieser Erfindung liegt die Aufgabe zu Grunde, das Verklumpen der Fasern zu verhindern, was durch die offene Verbindung des Refiners und des Trockners durch die Blasleitung gelöst wird. Dabei ist vor dem Trockner eine Einrichtung zum Beleimen des Faserstoff-Dampf-Gemischs in der Blasleitung angeordnet.The AT 514 329 B1 describes a plant and a method for processing fibrous materials with a refiner, which is connected via a blow line with a dryer, characterized in that in the blow line a device for Discharging part of the steam is arranged. The object of this invention is to prevent clumping of the fibers, which is solved by the open connection of the refiner and the dryer through the blow line. In this case, a device for gluing the fibrous material-steam mixture is arranged in the blow line upstream of the dryer.

Die JPH04148904A offenbart einen Beschichtungsgranulator. Dabei ist einer Granulationskammer eine Dispersionsdüse aufgesetzt. Ein Pulver wird über eine Düse der Dispersionsdüse zugeführt. Zwischen Düse und Dispersionsdüse ist ein Spalt ausgebildet, durch den aus der umgebenden gas-box das unter Hochdruck stehende Mischgas, bestehend aus Beschichtungsmaterial und Bindemittel, der Dispersionsdüse zugeführt wird. Bindemittel und Beschichtungsmaterial werden in der gas-box bzw. im Bereich des Spalts zwischen Düse und Dispersionsdüse gleichmässig auf der Oberfläche des Pulvers verteilt. Danach strömt das Gas in die Granulationskammer. Die Granulationskammer wird tangential über ein Gebläse mit Gas beschickt - zur Ausbildung einer Rotationsströmung in der Granulationskammer. Das Pulver folgt der Rotationsströmung in der Granulationskammer, wobei es zu der Agglomeration kommt.The JPH04148904A discloses a coating granulator. A dispersion nozzle is attached to a granulation chamber. A powder is fed through a nozzle of the dispersion nozzle. A gap is formed between the nozzle and the dispersion nozzle, through which the high-pressure mixed gas, consisting of coating material and binder, is fed from the surrounding gas box to the dispersion nozzle. Binding agent and coating material are evenly distributed on the surface of the powder in the gas box or in the area of the gap between the nozzle and the dispersion nozzle. The gas then flows into the granulation chamber. The granulation chamber is fed with gas tangentially via a blower - to form a rotating flow in the granulation chamber. The powder follows the rotating flow in the granulation chamber, causing agglomeration.

Die DE1 9930800 A1 offenbart ein Verfahren zur Herstellung von Faserplatten, wobei Fasern mit Dampfdruck durch eine blow-line in einen Rohrtrockner gefördert werden und der Endabschnitt des Rohrtrockners als Leim-Benetzungszone ausgebildet ist. In der Leim-Benetzungszone wird durch Vergrößerung des Rohrtrockner-Strömungsquerschnitts die Transportgeschwindigkeit des Fasergemisches reduziert und eine turbulente Strömung erzeugt und durch Eindüsen zusätzlicher Luft die Turbulenz weiter erhöht.The DE1 9930800 A1 discloses a process for the production of fibreboards, in which fibers are conveyed with steam pressure through a blow-line into a tube dryer and the end section of the tube dryer is designed as a glue-wetting zone. In the glue-wetting zone, the transport speed of the fiber mixture is reduced by increasing the flow cross-section of the tube dryer and a turbulent flow is generated, and the turbulence is further increased by injecting additional air.

Die EP2431144 A1 beschreibt ein Verfahren und eine Einrichtung zur Nassbeleimung von Holzfasern, wobei die Holzfasern innerhalb eines Förderrohres in einem Strom aus gesättigtem Dampf in die Beleimungszone transportiert werden.The EP2431144 A1 describes a method and a device for the wet gluing of wood fibers, the wood fibers being transported into the gluing zone in a conveying pipe in a stream of saturated steam.

Ziel der Erfindung ist eine Anlage bzw. ein Verfahren, das eine effiziente Verteilung des Leims auf den Faserstoff in einem Faserstoff-Dampf-Gemisch erlaubt. Es soll eine bestmögliche Chemikalien- bzw. Leimnutzung erreicht werden, mit einer geringen Verschmutzung der Innenwandung der Beleimvorrichtung, bei einem minimalen Energieverlust, d.h. einem minimalen Druckverlust in der Beleimvorrichtung.The aim of the invention is a system and a method that allows an efficient distribution of the glue on the pulp in a pulp-steam mixture. The best possible use of chemicals or glue should be achieved, with little contamination of the inner wall of the gluing device, with a minimal energy loss, ie a minimal pressure drop in the gluing device.

Dies gelingt erfindungsgemäß dadurch, dass das Faserstoff-Dampf-Gemisch der Beleimvorrichtung in einer Umfangsrichtung zugeführt wird und das Faserstoff-Dampf-Gemisch in der Beleimvorrichtung eine Drallströmung um und entlang einer Achse der Beleimvorrichtung ausbildet. Typischerweise hat die Beleimvorrichtung eine im wesentlichen rotationssymmetrische Innenkontur um die Achse der Beleimvorrichtung, wobei die Rotationssymmetrieachse die Achse der Beleimvorrichtung definiert. Das Faserstoff-Dampf-Gemisch wird am Umfang in Umfangsrichtung der Beleimvorrichtung zugeführt und in Richtung der Achse der Beleimvorrichtung ausgeführt. In der Beleimvorrichtung bildet das Faserstoff-Dampf-Gemisch eine Drallströmung um und entlang einer Achse der Beleimvorrichtung aus. So wird energieeffizient, d.h. bei einem geringen Druckverlust, und vorteilhaft gegenüber Lösungen des Stands der Technik, wie z.B. einer Drallklappe, eine Drallströmung aufgeprägt. Dabei wird der Leim in einer als Zyklon ausgeführten Beleimvorrichtung auf den Faserstoff aufgebracht, wobei der Zyklon einen Eintrittsbereich, einen Konus und einen Konus-Austrittsbereich umfasst. Der Zyklon ist eine günstige Ausgestaltung einer Beleimvorrichtung, die eine im wesentlichen rotationssymmetrische Innenkontur um die Achse der Beleimvorrichtung hat. So erlaubt der Zyklon einen niedrigen Druckverlust und eine energieeffiziente Ausbildung der Drallströmung in der Beleimvorrichtung. Vorteilhafterweise umfasst der Zyklon ein Tauchrohr, wobei ein Teil des Dampfes des Faserstoff-Dampf-Gemischs über das Tauchrohr aus dem Zyklon ausgeführt werden kann. So kann Dampf mit einem hohen Energieinhalt über das Tauchrohr aus der Beleimvorrichtung bzw. dem Zyklon ausgeführt werden und effizient in der Anlage, insbesondere im Vordämpfer und/oder im Kocher, genutzt werden und erlaubt eine Energierückgewinnung. In entsprechenden Anlagen wird der Faserstoff typischerweise durch einen Vordämpfer, einen Kocher und einen mit dem Trockner über eine Blasleitung verbundenen Refiner geführt. Alternativ kann der Zyklon aber auch ohne Tauchrohr ausgeführt sein.This is achieved according to the invention in that the fibrous material-steam mixture is fed to the gluing device in a circumferential direction and the fibrous material-steam mixture in the gluing device forms a swirling flow around and along an axis of the gluing device. The gluing device typically has an essentially rotationally symmetrical inner contour around the axis of the gluing device, with the axis of rotational symmetry defining the axis of the gluing device. The fibrous material-steam mixture is fed to the circumference in the circumferential direction of the gluing device and carried out in the direction of the axis of the gluing device. In the gluing device, the fibrous material-steam mixture forms a swirling flow around and along an axis of the gluing device. In this way, a swirl flow is imposed in an energy-efficient manner, i.e. with a low pressure loss, and is advantageous compared to prior-art solutions, such as a swirl flap. The glue is applied to the fibrous material in a gluing device designed as a cyclone, with the cyclone comprising an entry area, a cone and a cone exit area. The cyclone is a favorable embodiment of a gluing device which has an essentially rotationally symmetrical inner contour around the axis of the gluing device. The cyclone allows for a low pressure loss and an energy-efficient swirl flow in the gluing device. Advantageously, the cyclone comprises a dip tube, with part of the vapor of the fibrous material-steam mixture being able to be discharged from the cyclone via the dip tube. In this way, steam with a high energy content can be discharged from the gluing device or the cyclone via the immersion tube and used efficiently in the system, in particular in the pre-steamer and/or in the boiler, and allows energy recovery. In such plants, the pulp is typically fed through a pre-steamer, a digester and a refiner connected to the dryer via a blow line. Alternatively, the cyclone can also be designed without a dip tube.

Eine günstige Ausgestaltung des Verfahrens ist dadurch gekennzeichnet, dass der Leim über ein Düsenrohr zumindest einer Düse zugeführt wird, wobei das Düsenrohr in der Nähe und in Richtung einer Symmetrieachse des Zyklons und bevorzugt entlang der Symmetrieachse des Zyklons ausgebildet ist und die zumindest eine Düse in einem faserstoffarmen Bereich, bevorzugt im Konus-Austrittsbereich, angeordnet ist. Vorteilhafterweise ist im Konusbereich und insbesondere im Konus-Austrittsbereich eine voll ausgebildete Drallströmung gegeben, wobei der Faserstoff des Faserstoff-Dampf-Gemisches an bzw. in der Nähe der Innenwandung der Beleimvorrichtung bzw. des Zyklons konzentriert ist und sinngemäß einen Faserring an der Innenwandung ausbildet. Durch Anordnung der Düse im Inneren der Drallströmung und somit in einem faserstoffarmen Bereich, z.B. entlang der Achse der Beleimvorrichtung, bevorzugt im Konus-Austrittsbereich, kann der Leim von Innen auf den Faserstoff bzw. auf den Faserring aufgebracht werden und erlaubt vorteilhafterweise eine effiziente Verteilung bzw. Aufbringung des Leims mit einer bestmöglichen Chemikalien- bzw. Leimnutzung und einer geringen Verschmutzung der Innenwand der Beleimvorrichtung. Dabei kann der Leim in Richtung der Achse der Beleimvorrichtung und / oder in Richtung einer Innenwand der Beleimvorrichtung, d.h. von innen radial nach außen in Richtung des Faserrings, versprüht werden. Ebenso vorteilhaft ist diese Anordnung der Düse im faserstoffarmen Inneren der Drallströmung, z.B. entlang der Achse der Beleimvorrichtung, im Konus-Austrittsbereich da die Düsen in einem faserstoffarmen Bereich angeordnet sind. Durch diese Anordnung außerhalb des faserstoffreichen Faserrings sind die Düsen einer weit geringeren Abrasion durch den Faserstoff ausgesetzt. Im Stand der Technik hingegen unterliegen Düsen der Abrasion durch den Faserstoff und müssen durch entsprechende Maßnahmen, z.B. kein Vorstehen bzw. Einragen der Düsen in den Strömungsraum bei Anordnung der Düsen im Wandbereich der Beleimvorrichtung, geschützt werden. Vorteilhafterweise wird der Düse bzw. den Düsen der Leim über ein Düsenrohr, das bei vorhandenem Tauchrohr durch das Tauchrohr geführt sein kann, zugeführt, wobei dies eine minimale Beeinflussung bzw. Störung der Drallströmung innerhalb der Beleimvorrichtung bzw. des Zyklons erlaubt.A favorable embodiment of the method is characterized in that the glue is supplied to at least one nozzle via a nozzle pipe, the nozzle pipe being in the vicinity of and in the direction of an axis of symmetry of the cyclone and preferably is formed along the axis of symmetry of the cyclone and the at least one nozzle is arranged in a low-fiber area, preferably in the cone outlet area. Advantageously, there is a fully developed swirl flow in the cone area and in particular in the cone outlet area, with the fibrous material of the fibrous material-steam mixture being concentrated on or near the inner wall of the gluing device or the cyclone and correspondingly forming a fiber ring on the inner wall. By arranging the nozzle inside the swirl flow and thus in an area with little fibrous material, e.g. along the axis of the gluing device, preferably in the cone outlet area, the glue can be applied to the fibrous material or the fiber ring from the inside and advantageously allows efficient distribution or Application of the glue with the best possible use of chemicals and glue and a low level of soiling of the inner wall of the gluing device. The glue can be sprayed in the direction of the axis of the gluing device and/or in the direction of an inner wall of the gluing device, ie from the inside radially outwards in the direction of the fiber ring. This arrangement of the nozzle in the low-fiber interior of the swirl flow, for example along the axis of the gluing device, in the cone outlet area is just as advantageous, since the nozzles are arranged in an area low in fibrous matter. Due to this arrangement outside of the fibrous ring, the nozzles are exposed to far less abrasion from the fibrous material. In the prior art, on the other hand, nozzles are subject to abrasion by the fibrous material and must be protected by appropriate measures, for example the nozzles not protruding or protruding into the flow space when the nozzles are arranged in the wall region of the gluing device. Advantageously, the glue is fed to the nozzle or nozzles via a nozzle tube, which can be guided through the immersion tube if there is an immersion tube, whereby this allows minimal influencing or disruption of the swirl flow within the gluing device or the cyclone.

Eine günstige Ausgestaltung des Verfahrens ist dadurch gekennzeichnet, dass der zumindest einen Düse auch ein Frischdampf zugeführt wird. Bei Ausführung der Düse als Zweistoffdüse wird vorteilhafterweise Frischdampf als Treibmittel verwendet. Wie schon im Stand der Technik beschrieben können unter anderem im Refiner Schadstoffe, wie z.B. VOC (volatile organic compounds), aus dem Faserstoff gelöst bzw. in die Dampfphase übergehen. Dies führt zu einer Schadstofffracht in der Dampfphase, die im Trockner von dem zu verarbeitenden Material abgetrennt wird, und eine umweltgerechte Aufarbeitung bzw. Reinigung erfordert. Vorteilhafterweise wird Frischdampf als Treibmittel der Zweistoffdüse verwendet, wodurch der Beleimvorrichtung bzw. dem Zyklon im Konus-Austrittsbereich unbelasteter Frischdampf zugeführt wird. Bei Ausführung des Zyklons mit einem Tauchrohr kann belasteter Dampf des Faserstoff-Dampf-Gemischs durch das Tauchrohr aus der Beleimvorrichtung bzw. dem Zyklon ausgeführt werden und in der Anlage, insbesondere im Vordämpfer und/oder dem Kocher, Verwendung finden. Durch die Zugabe des Frischdampfs im Konus-Austrittsbereich kann dem Trockner ein Faserstoff-Dampf-Gemisch zugeführt werden, das eine geringere Schadstofffracht aufweist, als das Faserstoff-Dampf-Gemisch, das der Beleimvorrichtung zugeführt wird.A favorable embodiment of the method is characterized in that live steam is also supplied to the at least one nozzle. When the nozzle is designed as a two-component nozzle, live steam is advantageously used as the propellant. As already described in the prior art, pollutants such as VOC (volatile organic compounds), among other things, can be released from the pulp or pass into the vapor phase in the refiner. This leads to a pollutant load in the Vapor phase, which is separated from the material to be processed in the dryer and requires environmentally friendly processing or cleaning. Advantageously, live steam is used as the propellant of the two-component nozzle, as a result of which unloaded live steam is supplied to the gluing device or the cyclone in the cone outlet area. If the cyclone is designed with a dip tube, contaminated steam from the fibrous material-steam mixture can be carried out through the dip tube from the gluing device or the cyclone and can be used in the system, in particular in the pre-steamer and/or the digester. By adding the live steam in the cone outlet area, the dryer can be supplied with a fibrous material-steam mixture that has a lower pollutant load than the fibrous material-steam mixture that is fed to the gluing device.

Eine weitere günstige Ausgestaltung des Verfahrens ist dadurch gekennzeichnet, dass der Leim zumindest einer Düse im Bereich des Konus, bevorzugt im Konus-Austrittsbereich, zugeführt wird, wobei die Düse im Konus angeordnet ist. Dabei ist die zumindest eine Düse in der Wandung des Konus angeordnet und der Leim wird auf den Faserstoff bzw. auf den Faserring aufgebracht, wobei vorteilhafterweise eine effiziente Verteilung bzw. Aufbringung des Leims gegeben ist.A further advantageous embodiment of the method is characterized in that the glue is supplied to at least one nozzle in the area of the cone, preferably in the cone outlet area, with the nozzle being arranged in the cone. The at least one nozzle is arranged in the wall of the cone and the glue is applied to the fibrous material or to the fiber ring, with the glue advantageously being distributed or applied efficiently.

Ziel der Erfindung ist auch eine Anlage zum effizienten Verarbeiten von Faserstoff mit einem Refiner, der über eine Blasleitung mit einem Trockner verbunden ist, wobei in der Blasleitung eine Beleimvorrichtung angeordnet ist.The aim of the invention is also a plant for the efficient processing of fibrous material with a refiner, which is connected to a dryer via a blow line, with a gluing device being arranged in the blow line.

Dies gelingt erfindungsgemäß dadurch, dass die Beleimvorrichtung einen Eintrittsbereich am Umfang der Beleimvorrichtung und einen in Axialrichtung der Beleimvorrichtung ausgebildeten Austrittsbereich umfasst. Überraschenderweise erlaubt dies eine effiziente Verteilung des Leims auf den Faserstoff, wobei eine bestmögliche Chemikalien- bzw. Leimnutzung erreicht wird, da das im Eintrittsbereich am Umfang und in Umfangsrichtung der Beleimvorrichtung zugeführte Faserstoff-Dampf-Gemisch in der Beleimvorrichtung eine Drallströmung um und entlang einer Achse der Beleimvorrichtung ausbildet, wobei das Faserstoff-Dampf-Gemisch die Beleimvorrichtung in Axialrichtung durch den Austrittsbereich verlässt. Dabei ist die Beleimvorrichtung ein Zyklon, wobei der Zyklon den Eintrittsbereich, einen Konus und einen als Konus-Austrittsbereich ausgebildeten Austrittsbereich umfasst. Vorteilhafterweise verfügt der Zyklon über eine im wesentlichen rotationssymmetrische Innenkontur, wobei die Achse der Rotationssymmetrie die Achse der Beleimvorrichtung bzw. des Zyklons definiert. Das am Umfang in Umfangsrichtung der Beleimvorrichtung über den Eintrittsbereich zugeführte Faserstoff-Dampf-Gemisch bildet eine Drallströmung um und entlang der Achse der Beleimvorrichtung aus und wird in Richtung der Achse der Beleimvorrichtung über den Konus-Austrittsbereich ausgeführt. Dies erfolgt energieeffizient, d.h. bei einem geringen Druckverlust. Bei Ausgestaltung des Zyklons mit einem Tauchrohr kann auch ein Teil des Dampfes des Faserstoff-Dampf-Gemisches über das Tauchrohr aus dem Zyklon ausgeführt werden. So kann Dampf mit einem hohen Energieinhalt über das Tauchrohr aus der Beleimvorrichtung bzw. dem Zyklon ausgeführt werden und effizient in der Anlage, insbesondere im Vordämpfer und oder dem Kocher genutzt werden. Alternativ kann der Zyklon auch ohne Tauchrohr ausgeführt sein.According to the invention, this is achieved in that the gluing device comprises an entry area on the periphery of the gluing device and an exit area formed in the axial direction of the gluing device. Surprisingly, this allows the glue to be distributed efficiently over the fibrous material, with the best possible use of chemicals and glue being achieved, since the fibrous material-steam mixture fed into the entry area on the circumference and in the circumferential direction of the gluing device has a twisting flow around and along an axis in the gluing device of the gluing device, the fibrous material-steam mixture leaving the gluing device in the axial direction through the outlet area. The gluing device is a cyclone, with the cyclone comprising the inlet area, a cone and an outlet area designed as a cone outlet area. Advantageously, the cyclone has an im substantially rotationally symmetrical inner contour, the axis of rotational symmetry defining the axis of the gluing device or of the cyclone. The fibrous material-steam mixture fed to the periphery in the circumferential direction of the gluing device via the inlet area forms a swirling flow around and along the axis of the gluing device and is discharged in the direction of the axis of the gluing device via the cone outlet area. This is done in an energy-efficient manner, ie with a low pressure drop. If the cyclone is designed with a dip tube, part of the vapor of the fibrous material-steam mixture can also be discharged from the cyclone via the dip tube. In this way, steam with a high energy content can be discharged from the gluing device or the cyclone via the dip pipe and used efficiently in the system, in particular in the pre-steamer and/or the boiler. Alternatively, the cyclone can also be designed without a dip tube.

Eine vorteilhafte Ausgestaltung der Anlage ist dadurch gekennzeichnet, dass der Zyklon ein Düsenrohr umfasst und das Düsenrohr in der Nähe und in Richtung einer Symmetrieachse des Zyklons ausgebildet ist, wobei das Düsenrohr bevorzugt entlang der Symmetrieachse des Zyklons (6) ausgebildet ist. Durch die Anordnung des Düsenrohrs im Inneren der Drallströmung und somit in einem faserstoffarmen Bereich, z.B. entlang der Achse der Beleimvorrichtung, kann der Leim effizient von Innen auf den Faserstoff bzw. auf den umliegenden Faserring aufgebracht werden, wobei nur eine minimale Beeinflussung der Drallströmung gegeben ist. Vorteilhafterweise ist das Düsenrohr bis in den Konus, bevorzugt in den Konus-Austrittsbereich, ausgebildet und weist zumindest eine Düse zum Aufbringen von Leim auf. Durch die Anordnung der Düse im Inneren der voll ausgebildeten Drallströmung, z.B. entlang der Achse der Beleimvorrichtung, bevorzugt im Konus-Austrittsbereich, kann der Leim von Innen auf den Faserstoff bzw. auf den Faserring aufgebracht werden und erlaubt eine Minimierung der Verschmutzung der Innenwand der Beleimvorrichtung. Durch Anordnung außerhalb des faserstoffreichen Faserrings sind die Düsen auch einer weit geringeren Abrasion durch den Faserstoff ausgesetzt. Vorteilhafterweise wird der Düse bzw. den Düsen der Leim über ein Düsenrohr, das durch das optionale Tauchrohr des Zyklons geführt ist, zugeführt, was eine minimale Beeinflussung bzw. Störung der Drallströmung innerhalb der Beleimvorrichtung bzw. des Zyklons erlaubt.An advantageous embodiment of the system is characterized in that the cyclone comprises a nozzle tube and the nozzle tube is formed near and in the direction of an axis of symmetry of the cyclone, the nozzle tube preferably being formed along the axis of symmetry of the cyclone (6). By arranging the nozzle tube inside the swirl flow and thus in a low-fiber area, e.g. along the axis of the gluing device, the glue can be applied efficiently from the inside to the fibrous material or the surrounding fiber ring, with only a minimal influence on the swirl flow . Advantageously, the nozzle tube extends into the cone, preferably into the cone outlet area, and has at least one nozzle for applying glue. By arranging the nozzle inside the fully developed swirl flow, e.g. along the axis of the gluing device, preferably in the cone outlet area, the glue can be applied from the inside to the fibrous material or to the fiber ring and minimizes soiling of the inner wall of the gluing device . By being located outside of the pulp-rich fiber ring, the nozzles are also subject to far less abrasion from the pulp. Advantageously, the glue is fed to the nozzle or nozzles via a nozzle tube that is routed through the optional dip tube of the cyclone, which allows minimal influencing or disruption of the swirl flow within the gluing device or the cyclone.

Eine ebenso vorteilhafte Ausgestaltung der Anlage ist dadurch gekennzeichnet, dass zumindest eine Düse zum Aufbringungen von Leim im Bereich des Konus, bevorzugt im Konus-Austrittsbereich, angeordnet ist, wobei die Düse in der Wandung des Konus angeordnet ist. Die zumindest eine Düse ist dabei in der Wandung des Konus angeordnet und der Leim wird auf den Faserstoff bzw. auf den Faserring aufgebracht, wobei eine Eindüsung des Leims von außen nach innen bzw. radial nach innen erfolgt.An equally advantageous embodiment of the system is characterized in that at least one nozzle for applying glue is arranged in the area of the cone, preferably in the cone outlet area, with the nozzle being arranged in the wall of the cone. The at least one nozzle is arranged in the wall of the cone and the glue is applied to the fibrous material or to the fiber ring, with the glue being injected from the outside inwards or radially inwards.

Eine günstige Ausgestaltung der Anlage ist dadurch gekennzeichnet, dass im Zyklon ein wendelförmiger Kratzer zur Reinigung der Innenwand des Zyklons drehbar um eine Achse angeordnet ist. Allfällige Anbackungen oder Ablagerungen an der Innenwandung des Zyklons können so kontinuierlich oder periodisch abgeschabt werden. Vorteilhafterweise wird dadurch ein länger durchgängiger Betrieb möglich bzw. der Reinigungsbedarf reduziert.A favorable configuration of the system is characterized in that a helical scraper for cleaning the inner wall of the cyclone is arranged in the cyclone so that it can rotate about an axis. Any caking or deposits on the inner wall of the cyclone can be scraped off continuously or periodically. Advantageously, this enables longer, continuous operation and reduces the need for cleaning.

Die Erfindung wird nun anhand der Zeichnungen beispielhaft beschrieben.

  • Fig. 1 zeigt eine Anlage zum Aufbringen von Leim auf einen Faserstoff entsprechend dem Stand der Technik.
  • Fig. 2 zeigt eine erfindungsgemäße Anlage zum Aufbringen von Leim auf einen Faserstoff.
  • Fig. 3 zeigt eine erfindungsgemäße Beleimvorrichtung.
  • Fig. 4 zeigt eine weitere erfindungsgemäße Beleimvorrichtung.
The invention will now be described by way of example with reference to the drawings.
  • 1 shows a system for applying glue to a fibrous material according to the prior art.
  • 2 shows a system according to the invention for applying glue to a fibrous material.
  • 3 shows a gluing device according to the invention.
  • 4 shows another gluing device according to the invention.

Im Detail zeigt Fig. 1 eine Anlage entsprechend dem Stand der Technik mit einem Vordämpfer 15, einem Kocher 16 und einem Refiner 2, der über eine Blasleitung 1 mit dem Trockner 4 verbunden ist, wobei zwischen Trockner 4 und Refiner 2 ein Zyklon 6 angeordnet ist. Dabei weist die Blasleitung 1 zwischen dem Zyklon 6 und dem Trockner 4 vor einer Beleimvorrichtung 3 ein Blasventil 17 und eine Druckmesseinrichtung 19 auf. Der Zyklon 6 ist mit einem Konus 8 und einem Tauchrohr 7 ausgebildet.shows in detail 1 a plant according to the prior art with a pre-steamer 15, a digester 16 and a refiner 2, which is connected to the dryer 4 via a blow line 1, with a cyclone 6 being arranged between the dryer 4 and the refiner 2. The blow line 1 between the cyclone 6 and the dryer 4 has a blow valve 17 and a pressure measuring device 19 upstream of a gluing device 3 . The cyclone 6 is designed with a cone 8 and a dip tube 7 .

Fig. 2 zeigt eine erfindungsgemäße Anlage mit einem Vordämpfer 15, einem Kocher 16 und einem Refiner 2, der über eine Blasleitung 1 mit dem Trockner 4 verbunden ist, wobei zwischen Trockner 4 und Refiner 2 eine Beleimvorrichtung 3 angeordnet ist. Dabei ist die Beleimvorrichtung 3 und vorteilhafterweise als Zyklon 6 ausgeführt und mit einem Konus 8 und einem optionalen Tauchrohr 7 ausgebildet. In Fig. 2 ist das Düsenrohr 10 durch das optionale Tauchrohr 7 geführt, wobei am Ende des Düsenrohres 10 zumindest eine Düse 11 angeordnet ist. 2 shows a system according to the invention with a pre-steamer 15, a digester 16 and a refiner 2, which is connected to the dryer 4 via a blow line 1, with a gluing device 3 being arranged between the dryer 4 and the refiner 2 is. The gluing device 3 is advantageously designed as a cyclone 6 and is designed with a cone 8 and an optional immersion tube 7 . In 2 the nozzle tube 10 is guided through the optional immersion tube 7, with at least one nozzle 11 being arranged at the end of the nozzle tube 10.

Fig. 3 zeigt eine erfindungsgemäße Beleimvorrichtung 3 im Detail, wobei diese vorteilhafterweise als Zyklon 6 ausgeführt ist. Der Zyklon 6 umfasst einen Eintrittsbereich 20, einen Konus 8, einen als Konus-Austrittsbereich 9 ausgestalteten Austrittsbereich 13, sowie ein optionales Tauchrohr 7. Durch den Eintrittsbereich 20 wird das Faserstoff-Dampf-Gemisch der Beleimvorrichtung 3 in Umfangsrichtung zugeführt, wodurch das Faserstoff-Dampf-Gemisch im Zyklon 6 eine Drallströmung um und entlang der Achse 5 des Zyklons 6 ausbildet. Innerhalb des optionalen Tauchrohres 7 ist eine Düsenrohr 10 angeordnet, wobei das Düsenrohr 10 bis in den Konus 8, bevorzugt in den Konus-Austrittsbereich 9, ausgebildet sein kann und durch das Düsenrohr 10 der Leim der mindestens einen Düse 11 zugeführt wird. Die so im Inneren der Drallströmung angeordnete Düse 11 bringt den Leim auf den Faserstoff auf, wobei der Leim in Richtung der Achse 5 und / oder in Richtung der Innenwand der Beleimvorrichtung 3 und insbesondere von innen radial nach außen in Richtung des sich an der Innenwand des Konus 8 ausbildenden Faserrings versprüht wird. Die mindestens eine Düse 11 kann alternativ oder zusätzlich auch im Bereich der Wandung des Konus 8, bevorzugt im Konus-Austrittsbereich 9, angeordnet sein. So kann der Leim auf den Faserstoff aufgebracht werden, wobei eine Eindüsung des Leims dann von außen nach innen bzw. radial nach innen erfolgt. Der Dampf des Faserstoff-Dampf-Gemisches, der eine Schadstoffbelastung aufweisen kann, kann kontinuierlich durch das optionale Tauchrohr 7 aus der Beleimvorrichtung 3 ausgetragen und in der Anlage, insbesondere im Vordämpfer 15 und/oder dem Kocher 16, Verwendung finden. Vorteilhafterweise wird Frischdampf als Treibmittel in einer beispielsweise als Zweistoffdüse ausgeführten Düse 11 verwendet und so Frischdampf in den Zyklon 6 eingebracht, wobei das dann dem Trockner 4 zugeführte Faserstoff-Dampf-Gemisch eine geringere Schadstofffracht aufweist, als das dem Zyklon 6 zugeführte Faserstoff-Dampf-Gemisch. Im Zyklon 6 kann zudem ein wendelförmiger Kratzer 14 zur Reinigung der Innenwand des Zyklons 6 drehbar um die Achse 5 angeordnet sein. 3 shows a gluing device 3 according to the invention in detail, which is advantageously designed as a cyclone 6 . The cyclone 6 comprises an entry area 20, a cone 8, an exit area 13 designed as a cone exit area 9, and an optional immersion tube 7. The fibrous material-steam mixture is fed to the gluing device 3 in the circumferential direction through the entry area 20, as a result of which the fibrous material Steam mixture in the cyclone 6 forms a swirl flow around and along the axis 5 of the cyclone 6. A nozzle tube 10 is arranged inside the optional immersion tube 7, with the nozzle tube 10 being able to extend into the cone 8, preferably into the cone outlet region 9, and the glue being supplied to the at least one nozzle 11 through the nozzle tube 10. The nozzle 11 arranged in the interior of the swirl flow applies the glue to the fibrous material, with the glue flowing in the direction of the axis 5 and/or in the direction of the inner wall of the gluing device 3 and in particular from the inside radially outwards in the direction of the inner wall of the Cone 8 forming fiber ring is sprayed. The at least one nozzle 11 can alternatively or additionally also be arranged in the area of the wall of the cone 8 , preferably in the cone outlet area 9 . In this way, the glue can be applied to the fibrous material, with the glue then being injected from the outside inwards or radially inwards. The vapor of the fibrous material-vapour mixture, which may contain pollutants, can be continuously discharged from the gluing device 3 through the optional immersion tube 7 and can be used in the system, in particular in the pre-steamer 15 and/or the boiler 16 . Advantageously, live steam is used as a propellant in a nozzle 11 designed, for example, as a two-component nozzle, and live steam is thus introduced into the cyclone 6, the fibrous material-steam mixture then fed to the dryer 4 having a lower pollutant load than the fibrous material-steam mixture fed to the cyclone 6. Mixture. In addition, a helical scraper 14 for cleaning the inner wall of the cyclone 6 can be arranged in the cyclone 6 so as to be rotatable about the axis 5 .

Fig. 4 zeigt eine weitere erfindungsgemäße Beleimvorrichtung 3 im Detail, wobei diese vorteilhafterweise als Zyklon 6 ohne Tauchrohr ausgeführt ist. Der Zyklon 6 umfasst einen Eintrittsbereich 20, einen Konus 8, einen als Konus-Austrittsbereich 9 ausgestalteten Austrittsbereich 13. Durch den Eintrittsbereich 20 wird das Faserstoff-Dampf-Gemisch der Beleimvorrichtung 3 in Umfangsrichtung zugeführt, wodurch nachfolgend das Faserstoff-Dampf-Gemisch im Zyklon 6 eine Drallströmung um und entlang der Achse 5 des Zyklons 6 ausbildet. Das Düsenrohr 10 ist bis in den Konus 8, bevorzugt in den Konus-Austrittsbereich 9, ausgebildet und durch das Düsenrohr 10 wird der Leim der mindestens einen Düse 11 zugeführt. 4 shows a further gluing device 3 according to the invention in detail, which is advantageously designed as a cyclone 6 without a dip tube. The cyclone 6 comprises an inlet area 20, a cone 8, an outlet area 13 configured as a cone outlet area 9. The fibrous material-steam mixture is fed to the gluing device 3 in the circumferential direction through the entry area 20, whereby the fibrous material-steam mixture then flows in the cyclone 6 forms a swirl flow around and along the axis 5 of the cyclone 6 . The nozzle tube 10 extends into the cone 8 , preferably into the cone outlet region 9 , and the glue is supplied to the at least one nozzle 11 through the nozzle tube 10 .

Die vorliegende Erfindung bietet zahlreiche Vorteile gegenüber dem Stand der Technik. Sie erlaubt eine effiziente Verteilung des Leims, wobei ein minimaler Chemikalien- bzw. Leimeinsatz zu einem optimalen Ergebnis führt. Zudem ist erfindungsgemäß nur eine minimale Verschmutzung der Innenwandung der Beleimvorrichtung bzw. des Zyklons durch Leim gegeben. Die Erfindung erlaubt zudem eine hohe thermische Effizienz der Anlage, da aus der Beleimvorrichtung Dampf zur weiteren Verwendung ausgetragen werden kann. Ebenso erlaubt die erfindungsgemäße Beleimvorrichtung eine eventuell im Faserstoff-Dampf-Gemisch vorhandene Schadstofffracht vor Einbringung in den Trockner zu reduzieren. Zudem wird die Drallströmung in der Beleimvorrichtung mit einem minimalen Druckverlust eingestellt. Abschließend erlaubt die Erfindung eine optimale Anordnung der Düsen, wobei die Düsen nur einer minimalen Abrasion durch den zu beleimenden Faserstoff ausgesetzt sind.The present invention offers numerous advantages over the prior art. It allows the glue to be distributed efficiently, with minimal use of chemicals or glue leading to an optimal result. In addition, according to the invention, there is only minimal contamination of the inner wall of the gluing device or cyclone by glue. The invention also allows a high thermal efficiency of the system, since steam can be discharged from the gluing device for further use. The gluing device according to the invention also allows any pollutant load present in the fibrous material-steam mixture to be reduced before it is introduced into the dryer. In addition, the swirl flow in the gluing device is set with a minimum pressure loss. Finally, the invention allows for an optimal arrangement of the nozzles, with the nozzles only being subjected to minimal abrasion by the fibrous material to be glued.

Claims (11)

  1. Method for applying glue to a pulp, in which a raw material to be processed, e.g. wood chips, is fed in a mixture of pulp and steam through a blow line (1) from a refiner (2) to a glueing device (3) and on to a dryer (4), characterized in that the mixture of pulp and steam is fed to the glueing device (3) in a circumferential direction and the pulp and steam mixture forms a vortex flow in the glueing device (3) around and along an axis (5) of the glueing device (3), the glue being applied to the pulp in a glueing device (3) designed as a cyclone (6), and the cyclone (6) comprises an entry section (20), a cone (8), and a cone discharge section (9).
  2. Method according to claim 1, characterized in that the glue is fed through a nozzle pipe (10) to at least one nozzle (11), the nozzle pipe (10) being formed in the vicinity and direction of a symmetry axis of the cyclone (6) and preferably along the cyclone's (6) symmetry axis, and the at least one nozzle (11) is disposed in a low-pulp area, preferably in the cone discharge section (9).
  3. Method according to claim 2, characterized in that fresh steam is also fed to the at least one nozzle (11).
  4. Method according to claim 1, characterized in that the glue is fed to at least one nozzle (11) in the area of the cone (8), preferably in the cone discharge area (9), the nozzle (11) being disposed inside the cone (8).
  5. Method according to claim 1, characterized in that the glue is applied to the pulp by at least one nozzle (11) disposed inside the vortex flow.
  6. Method according to claim 5, characterized in that the glue is sprayed in the direction of the axis (5) of the glueing device (3) and/or radially outwards through the nozzle (11) disposed inside the vortex flow.
  7. Plant for processing pulps with a refiner (2) that is connected via a blow line (1) to a dryer (4), a glueing device (3) being disposed in the blow line (1), characterized in that the glueing device (3) comprises an entry section (20) at the circumference of the glueing device (3) and a discharge section (13) formed in axial direction of the glueing device (3), the glueing device (3) being a cyclone (6), and the cyclone (6) comprises the entry section (20), a cone (8) and a discharge section (13) designed as a cone discharge section (9).
  8. Plant according to claim 7, characterized in that the cyclone (6) has a nozzle pipe (10) and the nozzle pipe (10) is formed in the vicinity and direction of a symmetry axis of the cyclone (6), the nozzle pipe (10) preferably being formed along the symmetry axis of the cyclone (6).
  9. Plant according to claim 8, characterized in that the nozzle pipe (10) is formed into the cone (8), preferably into the core discharge section (9), and has at least one nozzle (11) for applying glue.
  10. Plant according to claim 7, characterized in that at least one nozzle (11) for applying glue is disposed in the area of the cone (8), preferably in the cone discharge area (9), the nozzle (11) being disposed in the wall of the cone (8).
  11. Plant according to claim 7, characterized in that a spiral-shaped scraper (14) that can be rotated round an axis (5) is disposed in the cyclone (6) to clean the inner wall of the cyclone (6).
EP20754172.3A 2019-09-30 2020-07-02 Plant and method for applying glue to a fibrous material Active EP4038233B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50828/2019A AT522983B1 (en) 2019-09-30 2019-09-30 PLANT AND PROCESS FOR APPLYING GLUES TO A FABRIC
PCT/EP2020/068602 WO2021063555A1 (en) 2019-09-30 2020-07-02 Plant and method for applying glue to a fibrous material

Publications (3)

Publication Number Publication Date
EP4038233A1 EP4038233A1 (en) 2022-08-10
EP4038233B1 true EP4038233B1 (en) 2023-08-30
EP4038233C0 EP4038233C0 (en) 2023-08-30

Family

ID=72046843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20754172.3A Active EP4038233B1 (en) 2019-09-30 2020-07-02 Plant and method for applying glue to a fibrous material

Country Status (6)

Country Link
EP (1) EP4038233B1 (en)
CN (1) CN114514101B (en)
AT (1) AT522983B1 (en)
BR (1) BR112022001634A2 (en)
PL (1) PL4038233T3 (en)
WO (1) WO2021063555A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4122662B1 (en) * 2021-07-23 2024-02-28 Fiberboard GmbH Method for producing fibreboard with reduced voc emissions

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2958572B2 (en) * 1990-10-12 1999-10-06 三井鉱山株式会社 Coating granulator
SE508492C2 (en) * 1996-01-11 1998-10-12 Sunds Defibrator Ind Ab Plant for drying and bonding of fiber material
CA2317513A1 (en) * 1998-08-05 2000-02-17 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Method for producing medium density fibre panels
DE10104047B4 (en) * 2001-01-31 2005-12-01 Johann Leonhartsberger Device for the dry gluing of particles in the form of fibers and chips
DE102006013567B4 (en) * 2006-03-24 2013-09-26 Glunz Ag Method and device for applying binder to particles, in particular fibers, which are conveyed through a blown passage
DE102006026124A1 (en) * 2006-06-03 2007-12-06 Glunz Ag Method and device for gluing particles in the region of a blower tube
DE102008052961B4 (en) * 2008-10-23 2016-07-28 SWISS KRONO Tec AG Process for the manufacture of wood-based materials
PL2431144T3 (en) * 2010-09-15 2013-02-28 SWISS KRONO Tec AG Method and device for wet gluing wood fibres
CN102001121B (en) * 2010-10-20 2012-08-22 饶显生 Method for producing bark mixed medium-density fiber plate
AT514329B1 (en) 2013-08-01 2014-12-15 Andritz Ag Maschf Plant and method for processing fibrous materials
ES2623824T3 (en) 2014-05-02 2017-07-12 SWISS KRONO Tec AG Procedure and installation to manufacture a wood fiber panel
DE102018112266A1 (en) * 2017-05-22 2018-11-22 Dieffenbacher GmbH Maschinen- und Anlagenbau A CEILING DEVICE FOR PELLETING PARTICLES, A DEVICE OR FOR AN APPARATUS FOR PRODUCING PRESS PLATES, METHOD FOR PREVENTING DEPOSITION OF LEAD AND / OR PARTICLES AND METHOD FOR PELLETING PARTICLES

Also Published As

Publication number Publication date
BR112022001634A2 (en) 2022-06-21
CN114514101B (en) 2023-03-28
AT522983B1 (en) 2022-12-15
EP4038233A1 (en) 2022-08-10
AT522983A1 (en) 2021-04-15
WO2021063555A1 (en) 2021-04-08
EP4038233C0 (en) 2023-08-30
PL4038233T3 (en) 2024-03-04
CN114514101A (en) 2022-05-17

Similar Documents

Publication Publication Date Title
DE10153593B4 (en) Apparatus and method for wetting wood fibers with a binder fluid
EP4038233B1 (en) Plant and method for applying glue to a fibrous material
CN103619551B (en) The device of the method for glued particle and glued particle
EP0078960B1 (en) Method and device for glueing particles, especially wood-shavings
US6409834B1 (en) Gluing apparatus for wood fiber panel production plants
US5792264A (en) Gluing machine for wood fibreboard panel production plants, and a plant using the gluing machine
WO2015056174A2 (en) Process and device for gluing fibers for the production of fiberboards
EP1337384B1 (en) Fibre preparation system
WO2000007785A1 (en) Method for producing medium density fibre panels
EP3027806B1 (en) System and method for processing fibrous materials
EP2431144B1 (en) Method and device for wet gluing wood fibres
DE102006024895A1 (en) Gluing fibers involves passing fiber-free outer air flow between hot air and fiber flow and inner wall of straight tube forming part of second dryer stage
DE10104047B4 (en) Device for the dry gluing of particles in the form of fibers and chips
EP1504865B1 (en) Method and apparatus for coating pourable materials with a binder
EP1670623B1 (en) Method for preparing fiberboards from wood fibers
DE3043730A1 (en) Centrifugal flash dryer - with tangential inlet and outlet of cylindrical drum enclosing revolving shaft and blades
AT233525B (en) Process for the production of soluble coarse-grained powders and agglomerates of fine powders and equipment for carrying out this process
AT395735B (en) Apparatus for producing refiner stock from lignocellulose material
EP2179826A1 (en) Device and method for manufacturing wooden materials
DE202015102402U1 (en) Device for gluing fibers or fiber-like material
DE102015107318A1 (en) Method and device for gluing fibers or fiber-like material
CH448505A (en) Device for treating comminuted plant material

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220128

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref document number: 502020005019

Country of ref document: DE

Ref country code: DE

Ref legal event code: R079

Free format text: PREVIOUS MAIN CLASS: D21B0001020000

Ipc: B01F0025721000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230224

RIC1 Information provided on ipc code assigned before grant

Ipc: D21B 1/06 20060101ALI20230213BHEP

Ipc: B27N 1/02 20060101ALI20230213BHEP

Ipc: D21B 1/02 20060101ALI20230213BHEP

Ipc: B08B 9/08 20060101ALI20230213BHEP

Ipc: B08B 9/00 20060101ALI20230213BHEP

Ipc: B04C 9/00 20060101ALI20230213BHEP

Ipc: B04C 5/22 20060101ALI20230213BHEP

Ipc: B01F 25/721 20220101AFI20230213BHEP

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502020005019

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

U01 Request for unitary effect filed

Effective date: 20230830

U07 Unitary effect registered

Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI

Effective date: 20230905

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230830

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231130

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231230

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230830

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230830

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230830

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230830

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230830

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230830

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502020005019

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20240624

Year of fee payment: 5

26N No opposition filed

Effective date: 20240603

U20 Renewal fee paid [unitary effect]

Year of fee payment: 5

Effective date: 20240724

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20240624

Year of fee payment: 5