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WO2024079177A1 - Dispositif de traitement de matières fibreuses - Google Patents

Dispositif de traitement de matières fibreuses Download PDF

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Publication number
WO2024079177A1
WO2024079177A1 PCT/EP2023/078157 EP2023078157W WO2024079177A1 WO 2024079177 A1 WO2024079177 A1 WO 2024079177A1 EP 2023078157 W EP2023078157 W EP 2023078157W WO 2024079177 A1 WO2024079177 A1 WO 2024079177A1
Authority
WO
WIPO (PCT)
Prior art keywords
module
dissolving
rotor
housing
sorting
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.)
Ceased
Application number
PCT/EP2023/078157
Other languages
German (de)
English (en)
Inventor
Wolfgang Mannes
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Priority to EP23787116.5A priority Critical patent/EP4602210A1/fr
Publication of WO2024079177A1 publication Critical patent/WO2024079177A1/fr
Priority to US19/098,489 priority patent/US20250290251A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/32—Defibrating by other means of waste paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/06—Rotary screen-drums
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/24—Continuous processes

Definitions

  • the invention relates to a device for processing fibrous materials, in particular for dissolving and sorting fibrous materials with high material densities in the HC range.
  • Dissolving devices are used to process fibrous raw materials so that they can be used in the form of a fibrous suspension, for example in a machine for producing a fibrous web, in particular a paper web.
  • Waste paper fibers for example, are used as fibrous raw materials.
  • the fibrous suspension is treated in a wet sieve in order to retain foreign fiber impurities on a sieve due to their size and then separate them.
  • the fibers can pass through the sieve openings with some of the water.
  • LC continuous LC pulper
  • HC discontinuous HC pulper
  • Sorting drums or flat screen machines are used for the sorting of dissolving waste paper.
  • DE 10 2015 206 499 A1 describes a device for dissolving fibrous material, in particular for dissolving fibrous material with high material densities in the HC range.
  • the device comprises a housing and working elements arranged in the housing which can be brought into engagement with the fibrous material.
  • the housing is designed in the form of a trough which is open at the top and has a U-shaped cross-section, in which a rotor is arranged which is mounted so as to be rotatable about an axis parallel to the longitudinal axis of the trough and which is provided with blade-like working elements which in particular have a low tendency to spin.
  • DE 10 2015 206 506 A1 describes a device for sorting wet, dirt-containing fibrous materials, in particular for the initial sorting of dissolved waste paper, with a housing and a screen that has a plurality of screen openings through which part of the fibrous material suspension fed to the housing can pass as accepted material, while another part of the fibrous material suspension is retained by the screen openings as reject.
  • Disc-shaped elements are arranged on a rotatably mounted rotor in the housing in order to keep the screen clear and to loosen the reject.
  • the object underlying the invention is to create a device for processing fibrous materials with which both the dissolution and the sorting of fibrous materials can be carried out safely and without disruption and which has a compact design.
  • the invention provides a device for processing fibrous materials, in particular fibrous materials with high material densities in the HC range such as waste paper.
  • the device comprises at least one dissolving module for dissolving fibrous material into a fibrous material suspension and a sorting module coupled to the dissolving module for subsequently sorting the dissolved fibrous material suspension, wherein the dissolving module comprises a housing and a arranged first rotor, and wherein the sorting module comprises a housing with a sieve for separating the supplied fiber suspension into an acceptable material and a reject and a second rotor arranged in the housing.
  • the rotor shaft of the first rotor of the dissolving module and the rotor shaft of the second rotor of the sorting module are connected to one another and form a common shaft. This promotes a compact structure.
  • a heavy part separation module is arranged between the dissolving module and the sorting module. This allows heavy parts to be separated at an early stage and does not have to pass through the screening module (50). This has a positive effect on energy consumption. In addition, wear on the screening module can be reduced.
  • the housing of the dissolving module is designed in the form of a trough extending horizontally along a longitudinal axis.
  • the first rotor comprises a rotor shaft which is mounted so as to be rotatable about an axis of rotation parallel to the longitudinal axis of the housing and has working elements arranged on the circumference thereof which can be brought into engagement with the fibrous material.
  • the housing of the sorting module is designed in the form of a trough extending horizontally along a longitudinal axis.
  • the trough is provided in its lower region with a sieve that is bent in a partially circular cross-section.
  • the second rotor comprises a rotor shaft that is mounted so that it can rotate about an axis of rotation that is parallel to the longitudinal axis of the housing and has clearing elements arranged on the circumference to keep the sieve clear and to loosen up the rejects.
  • the trough of the housing of the dissolving module and/or the trough of the housing of the sorting module has, in its lower region, an inner wall that is partially circular in cross section, in particular semicircular.
  • the rotor shaft of the first rotor of the dissolving module and the rotor shaft of the second rotor of the sorting module are connected to each other and form a common shaft.
  • the rotor shaft of the first rotor of the dissolving module and the rotor shaft of the second rotor of the sorting module are designed as one piece in order to form the common shaft.
  • a drive module for controlling and driving the common shaft consisting of the rotor shaft of the first rotor of the dissolving module and the rotor shaft of the second rotor of the sorting module.
  • the drive by a common drive module enables a compact design.
  • the use of only one drive has a beneficial effect on the manufacturing costs.
  • the common shaft can be driven with a maximum peripheral speed which is less than 10 m/s and preferably less than 5 m/s.
  • the heavy particle separation module is arranged between the housing of the dissolving module and the housing of the sorting module.
  • the clearing elements of the sorting module are designed as discs that are inclined relative to the axis of rotation of the rotor and are arranged on the rotor shaft in such a way that, when the rotor rotates, the fiber suspension or the reject is pushed back and forth at least substantially axially.
  • the smallest radial distance between the working elements and an inner wall of the housing of the dissolving module is approximately 200 mm, preferably 500 mm. In a further embodiment, it is provided that the radial distance between the clearing elements and an inner wall of the housing of the sorting module is less than 20 mm.
  • an inlet area of the sorting module is designed in such a way that the fiber suspension flows in below the rotor shaft. Inflow is particularly advantageous in an area of 15 - 20 cm below the axis of rotation of the rotor shaft.
  • the sieve in the inlet area of the sorting module the sieve has a very low height and is essentially only arranged in a base area.
  • the base area extends over a maximum angle range of 90°, preferably 60° and particularly preferably over 45° of the semicircular inner wall.
  • the inlet area can be designed without a sieve and the sieve is only arranged after the inlet area in the sorting module.
  • the fiber material to be treated is fed into the housing of the pulping module from above and orthogonal to the axis of rotation or axially to the axis of rotation, wherein the pulped fiber material can be evaluated axially or laterally by the pulping module in such a way that it can be continuously fed to the sorting module after pulping.
  • a vertical height difference is provided between the exit of the dissolving module and the entrance of the sorting module. This height difference supplies kinetic energy to the suspension through the force of gravity. This height difference is preferably dimensioned such that the fiber suspension can be fed from the dissolving module to the screening module without the need for a pump.
  • the outlet of the dissolving module is provided with a weir, preferably with an adjustable weir. This allows the height difference and thus also the potential energy of the suspension to be adjusted.
  • a reject module is provided which is connected to the sorting module for removing the reject from the sorting module.
  • Figure 1 is a schematic perspective view of a processing device for fibrous materials according to the invention
  • Figure 2 is a schematic perspective view of a dissolving module of the processing device according to the invention.
  • Figure 3 is a schematic perspective view of a sorting module of the processing device according to the invention.
  • Figure 4 shows an enlarged section of Figure 1 in the area of the transition between the dissolving module and the sorting module
  • Figure 5 shows a detail of a perspective interior view of the sorting module
  • Figure 6 is a perspective cross-sectional view of the sorting module
  • Figure ? a schematic representation of the liquid supply for the dissolution module and the sorting module
  • FIG. 8 schematic representation of the interface between the dissolving module and the sorting module with three detailed views. Additional features, aspects and advantages of the invention or embodiments thereof will become apparent from the detailed description taken in conjunction with the claims.
  • Fig. 1 shows a device 100 for processing fibrous materials, in particular for dissolving and sorting fibrous materials.
  • the processing device 100 is suitable for dissolving fibrous materials with high material densities in the HC range (high consistency) and in particular waste paper materials.
  • the device comprises a release module 10 and a sorting module 50.
  • the release module 10 is designed to dissolve fibrous material and the sorting module 50 for the subsequent sorting of the dissolved fibrous material.
  • a heavy part separation module 70 is arranged for separating heavy parts such as wires, metal parts, plastic components, etc., which can be found in the fibrous material usually fed in the form of bales.
  • a feed module 30 for feeding the fibrous material, in particular in the form of bales, into the dissolving module 10, a drive module 40 and a reject module 80 are provided.
  • Fig. 2 shows an exemplary dissolving module 10 with a housing 12.
  • a first rotor 17 is arranged in the housing 12.
  • the first rotor 17 comprises a rotor shaft 18 which is mounted so as to be rotatable about an axis of rotation 14 parallel to a longitudinal axis of the housing 12.
  • Blade-like working elements 19 which can be brought into engagement with the fibrous material are arranged on the circumferential side of the jacket surface of the rotor shaft 18.
  • the working elements 14 are arranged in particular in superimposed planes in relation to the axis of rotation 14 of the rotor shaft 18, in which they move.
  • a leading edge of the rotating blade-like working elements 19 can be inclined relative to a tangent applied to the circumference of the rotor shaft 18 by an angle which is in particular less than 45° and preferably less than 30°.
  • the working elements 19 can be disk-shaped or wing-shaped.
  • the housing 12 of the dissolving module 10 is designed in the form of a trough that is open at the top, U-shaped in cross section and extends horizontally along the axis of rotation 14.
  • the trough of the housing 12 has an inner wall that is partially circular in cross section, in particular semicircular, in its lower region.
  • the smallest radial distance between the working elements 19 and an inner wall of the housing 12 of the dissolving module 10 is approximately 200 mm, preferably 500 mm.
  • This trough-shaped, upwardly open design of the housing 12 and the large distance between the rotating working elements 19 and the stationary inner wall of the housing 12 can largely prevent the introduced fiber material from becoming trapped between the wall of the trough and the working elements 19.
  • the dissolving module 10 comprises an input zone into which the fiber material to be treated can be introduced into the housing 12.
  • the input zone 22 is followed by a dissolving zone.
  • the dissolving fiber material can be evaluated axially and/or laterally in particular and is continuously fed to the sorting module 50 after dissolving.
  • the dissolving fiber material can be evaluated laterally in the area of upwardly moving working elements 19, so that the ejection is supported by the moving working elements 19.
  • the dissolving module 10 can be provided with a shredding device with various shredding elements, in order to shred, in particular, spinning parts such as cords, wires, plastic parts and generally impurities. These shredded impurities are then removed from the fiber suspension by the heavy part separation module 70 and discharged.
  • the shredding elements can be provided both in the input zone and in the dissolving zone.
  • the rotating rotor shaft 18 achieves a continuous dissolving process, which leads to effective material utilization and uniform and stable processing of the fiber material.
  • a speck-free dissolution solution for H C fiber materials and raw materials that are difficult to dissolve which may be supported by carrying out the dissolution at higher temperatures and/or adding chemicals.
  • the rotating working elements 19 enable the fiber material to be mixed and kneaded so that sufficiently high shear forces are exerted on the fiber material components that still need to be separated in order to be able to dissolve the fiber material in an energy-efficient manner.
  • Fig. 3 shows an exemplary sorting module 50 with a housing 52.
  • the housing 52 of the sorting module 50 is designed separately from the housing 12 of the dissolving module and can therefore be installed and maintained independently of the housing 12 of the dissolving module.
  • the housing 52 comprises a sieve 53 in a lower region, which has a plurality of sieve openings through which part of the fiber suspension fed to the housing 52 from the dissolving module 10 can pass as accepted material, while another part of the fiber suspension is held back by the sieve openings as reject.
  • the housing 52 of the sorting module 50 is designed in the form of a trough that is open at the top, U-shaped in cross section and extends horizontally along a longitudinal axis, which is provided in its lower region with the sieve 53 that is bent in a part-circular cross section.
  • the trough of the housing 52 has an inner wall that is part-circular in cross section, in particular semicircular, in its lower region.
  • a second rotor 57 is also arranged in the housing 52.
  • the second rotor 57 comprises a rotor shaft 58 which is mounted so as to be rotatable about an axis of rotation 54 parallel to the longitudinal axis of the housing 52.
  • the rotor shaft 58 is provided on the circumference with clearing elements 59 for keeping the screen 53 free and for loosening the recipe.
  • the clearing elements 59 are designed as discs which are inclined relative to the axis of rotation 54 of the rotor 57 and are arranged on the rotor shaft 58 in such a way that, when the rotor 57 rotates, the fibrous suspension or the reject is pushed back and forth at least essentially axially.
  • the radial distance between the clearing elements 59 and an inner wall of the housing 52 of the sorting module 50 is less than 20 mm, since In this way, an efficient screening effect can be achieved.
  • the screen 53 can be composed of one or more appropriately bent screen plates. Several zones with different screen opening cross-sections can be provided.
  • the rotor shaft 18 of the first rotor 17 of the dissolving module 10 and the rotor shaft 58 of the second rotor 57 of the sorting module 50 are connected to one another and form a common shaft.
  • the two rotor shafts 18, 58 can be manufactured separately and connected to one another by a connecting element or special connection techniques.
  • the rotor shaft 18 of the first rotor 17 of the dissolving module 10 and the rotor shaft 58 of the second rotor 57 of the sorting module 50 are designed as one piece in order to form the common shaft.
  • the drive module 40 is provided for driving the common shaft comprising the rotor shaft 18 of the first rotor 17 and the rotor shaft 58 of the second rotor 57, which comprises appropriately designed actuators or motors as well as a control device.
  • the common shaft is driven by the drive module 40 with a maximum peripheral speed which is less than 10 m/s and preferably less than 5 m/sec.
  • the heavy part separation module 70 is arranged between the housing 12 of the dissolving module 10 and the housing 54 of the sorting module 50. As a result, heavy parts are removed from the fiber suspension in front of the sorting module 50, so that jamming of the rotor shaft 58 by foreign matter is prevented, which would otherwise easily be possible due to the small distance between the clearing elements 59 and the inner wall of the housing 52.
  • the low peripheral speed of the common shaft which is preferably less than 5 m/s, in conjunction with the large distances between rotating and stationary surfaces in the dissolving module 10 and the intermediate heavy particle separation module 70 leads to low wear on the machine elements.
  • the fiber material to be treated is fed to the housing 12 of the dissolving module 10 by means of the feed module 30, in particular from above and orthogonal to the axis of rotation 14 or from the front and axially to the axis of rotation 14.
  • the feed module 30 is advantageously designed such that an insertion edge for inserting the fiber material bales has a low height. As a result, only a small amount of energy is required for feeding the processing device 100.
  • the feed module 30 comprises an insertion hopper 32 through which the fiber material bales are fed to the dissolving module 10.
  • the insertion hopper 32 is designed such that the fiber material bales can be fed to the dissolving module 10 uncrushed, so that they rest on the rotor shaft 58 and are gradually milled off by the working elements 19 of the rotor shaft 58.
  • FIG. 4 the transition area between the dissolving module 10 and the sorting module 50 is shown in more detail.
  • a weir device 122 with an overflow edge is provided to influence the amount of dissolved fiber material passed on from the dissolving module 10 to the sorting module 50.
  • the overflow edge of the weir device 122 is height-adjustable so that the volume of the ejected amount of dissolved fiber material can be regulated.
  • a further addition of liquid in particular an addition of water, is provided in order to reduce the density of the fibrous material suspension for the passage through the heavy part separation module 70.
  • a connecting device 124 is provided in particular in the upper area of a transport passage 125 for the fibrous material suspension, to which a water hose can be connected, for example.
  • the liquid is fed at a high speed, which is preferably in the range of greater than 5 m/s.
  • an impact surface inclined at a slight angle can be provided in the interior of the transport passage 125, onto which the liquid jet impacts.
  • the mixing of the dissolved fibrous material with the liquid can be improved by the impact impulse.
  • the diluted fiber suspension now enters the heavy part separation module 70. Due to the dilution, the heavy parts in the fiber suspension can sediment and be sorted out as sediment in the heavy part separation module 70.
  • the fiber suspension After passing through the heavy part separation module 70, the fiber suspension enters the sorting module 50.
  • the inlet area of the sorting module 50 is advantageously designed such that the fiber suspension can flow in below the rotor shaft 58, in particular in a region of 15 - 20 cm below the axis of rotation 54 of the rotor shaft 58.
  • the liquid level of the fiber suspension is usually in a range of 10 - 20 cm above the axis of rotation 54 of the rotor shaft 58, so that the inflow area is thus below the liquid level of the fiber suspension. This can significantly reduce turbulence when the dissolved fibers flow into the fiber suspension already present in the sorting module 50, which can lead to loads on the rotor shaft 58.
  • the rotor shaft 18 of the first rotor 17 of the dissolving module 10 and the rotor shaft 58 of the second rotor 57 of the sorting module 50 are connected to one another and form a common shaft, a reduction in vibrations of the rotor shaft 18, 58 caused by turbulence of the inflowing fiber suspension is important for the stability and reliability of the rotor shaft 18, 58.
  • the sieve 53 in the inlet area of the sorting module 50, can have a very low height and can only be provided essentially in the bottom area of the housing 52. In a further embodiment, it can also be provided that the sieve 53 is only arranged after the inlet area in the sorting module 50 and the inlet area is thus designed to be free of sieves.
  • a reject discharge opening 127 preferably has a plurality of spray nozzles 128 for a liquid, in particular water, arranged therein.
  • the spray nozzles 128 are in particular aligned axially in the direction of the axis of rotation 54 of the rotor shaft 58.
  • the liquid exits the spray nozzles 128 at a flow speed in the range of 5-8 m/s and at a high pressure and hits the reject.
  • the high speed and high pressure of the liquid jet accelerate the reject in the direction of the reject discharge opening 127 so that the reject can be discharged efficiently and in a targeted manner from the sorting module 50.
  • the number and dimensions of the spray nozzles 128 can vary and in particular can be adapted to the properties of the fiber suspension and thus of the reject in order to achieve a high transport effect on the reject.
  • further guide elements 129 can be arranged on the side walls of the sorting module 50, which extend into the transport path of the fiber suspension and are, for example, tooth-shaped and adjustable.
  • the guide elements 129 influence the transport flow of the fiber suspension in such a way that it is guided in a targeted manner in the direction of the clearing elements 59 in order to enable efficient processing of the fiber suspension through the action of the clearing elements 59.
  • the sorting module 50 can comprise a production room 150 for producing the accepted material and an adjoining washing room 152 for the reject. However, it can also be provided that the washing room 152 is arranged in the reject module 80.
  • the washing chamber 152 is connected to a liquid supply line 170 through which a liquid, in particular water, is introduced into the washing chamber 152. is brought.
  • the reject is subjected to a washing process by means of the liquid, by means of which any fibrous material still in the reject is washed out again in order to reuse it.
  • the invention provides for the liquid to be collected after the washing process, preferably in a collecting container 171, and to be drained off through a liquid discharge line 173.
  • the liquid discharge line 173 has a first liquid branch 175 for the supply line to the production room 150 and a second liquid branch 177 for the supply line to the dissolving module 10.
  • the liquid used for the washing process can thus be used again both for dissolving the fibrous material in the dissolving module 10 and for sorting the dissolved fibrous material suspension in the sorting module 50.
  • the liquid discharge line 173 can also be provided to connect the liquid discharge line 173 to the connecting device 124 in the area of the transport passage 125 in front of the heavy part separating device 70.
  • this can significantly reduce the liquid consumption, i.e. in particular the water consumption, for the processing device 100 according to the invention, since the short transport paths enable the liquid to be used twice.
  • the dissolution process of the fiber material and the sorting process of the fiber material suspension are integrated with one another.
  • Control of the material density by measuring the material density in the accepted material is made easier by a short control path. Fast feedback is possible based on a short residence time of the material.
  • the residence time in the dissolving module 10 can be influenced by an adjustable weir 93 at the end of the dissolving module 10. If the weir is moved upwards, the residence time in the dissolving module 10 is increased. This simplifies the control of the stock density in the fiber suspension, since a stock density measurement in the accepted material in the sorting module 50 and on a measuring device at the end of the pulping module 10 leads to coordinated results due to the transfer of the pulped fiber into the sorting module 50.
  • the continuous dissolving process leads overall to a high level of process stability and effective material utilization of the fiber material.
  • the dissolving module 10 enables dissolving under HC conditions, so that a suspension density in the range of 12-30% can be achieved.
  • the "kneading" treatment of the fiber material in the dissolving module 10 exerts sufficiently high shear forces on the still undissolved components in order to be able to dissolve the fiber material in an energy-efficient manner.
  • a separating disk 91 is provided in the dissolving module. The separating disk 91 ensures that the introduced material is comprehensively processed in the dissolving module.
  • the suspension is conveyed via the separating disk towards the outlet 92 of the dissolving module 10 by lifting elements 90 provided in front of the separating disk.
  • the trough-shaped, upwardly open design of the dissolving module 10 and the large distance between the rotating and stationary surfaces in the range of 200 mm to 500 mm prevent jamming of larger heavy parts.
  • the heavy part separation module 70 arranged between the dissolving module 10 and the sorting module 50 prevents jamming by contaminants in the sorting module 50. This is of considerable importance since, due to the process, a small distance of less than 20 mm is required between rotating and stationary surfaces in the sorting module 50.
  • the processing device 100 With the processing device 100 according to the invention, it is therefore possible to process even very large tonnages in the range of more than 2000 tons safely and efficiently due to the coupling of the dissolving module 10 with the sorting module 50 by the common rotor shaft.
  • Figure 8 comprises three sub-figures a to c.
  • Figure 8 a) shows a three-dimensional sketch of the end region of the dissolving module.
  • the shaft 18 with the axis of rotation 14 is shown.
  • the trough provided as the housing 12 has a partition 94 at the end.
  • the shaft 18 is shown as an example with only one lifting element 90.
  • the lifting elements 90 ideally have a working surface that lies in a plane parallel to the axis of rotation 14.
  • the working surfaces can also be slightly inclined, but not more than 30° or 20°. These working surfaces have an axial width that corresponds to 25% to 75% of the outlet 92 of the dissolving module.
  • a height difference between the lowest position of the weir 93 and the maximum suspension level in the sorting module 50 is required.
  • the height difference should be at least 35% of the shaft diameter. For a design with a shaft diameter of 1100 mm, this would be 385 mm.
  • the lower edge of the inlet 104 into the sorting module 50 is at least 10% to 20% lower than the maximum suspension level in relation to the shaft diameter. Otherwise, the heavy part separator 70 would have to be brought to a higher level, which in turn would require a larger overall height difference.
  • additional lifting elements 90 are used to transport the suspension over the raised weir edge 123.
  • the lifting elements are firmly connected to the rotor shaft 18.
  • the weir edge 123 can also be significantly higher, since the production quantity is regulated via the position of the weir edge 123.
  • the weir edge 123 can be raised by a provided adjustment up to a height of half the shaft diameter or 500 mm.
  • the lower weir edge 123 is located in a range of 0.3 to 1.5 times the shaft diameter vertically above the axis of rotation 14.
  • the lower edge 102 of the outlet of the dissolving module 50 is shown. This lower edge 102 is located at a vertical height 103 above the rotation axis 14, 54 of the dissolving module 10 and sorting module 50.
  • the lower edge 104 of the inlet into the sorting module also referred to as the entrance 95 of the sorting module, is vertically below the rotation axis 54,14.
  • the vertical distance below the rotation axis 14, 54 is designated with 105.
  • the sorting module 50 is provided with a partition wall 96 on the side facing the dissolving module 10.
  • the partition walls 94 and 96 are arranged axially adjacent.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un dispositif (100) destiné à traiter des matières fibreuses, en particulier des matières fibreuses à hautes densités de matière dans le domaine des HC, comme le vieux papier, ledit dispositif comprenant au moins un module de désagrégation (10) destiné à désagréger de la matière fibreuse dans une suspension de matière fibreuse et un module de tri (50) couplé au module de désagrégation (10) et destiné à assurer le tri ultérieur de la suspension de matière fibreuse désagrégée, le module de désagrégation (10) comprenant un boîtier (12) et un premier rotor (17) disposé dans le boîtier (12), et le module de tri (50) comprenant un boîtier (52) doté d'un tamis (53), destiné à séparer la suspension de matière fibreuse amenée en pâte acceptée et en rejet, et un second rotor (57) disposé dans le boîtier (52).
PCT/EP2023/078157 2022-10-12 2023-10-11 Dispositif de traitement de matières fibreuses Ceased WO2024079177A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP23787116.5A EP4602210A1 (fr) 2022-10-12 2023-10-11 Dispositif de traitement de matières fibreuses
US19/098,489 US20250290251A1 (en) 2022-10-12 2025-04-02 Apparatus for processing fibrous materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022126510.2 2022-10-12
DE102022126510 2022-10-12

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US19/098,489 Continuation US20250290251A1 (en) 2022-10-12 2025-04-02 Apparatus for processing fibrous materials

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WO2024079177A1 true WO2024079177A1 (fr) 2024-04-18

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PCT/EP2023/078157 Ceased WO2024079177A1 (fr) 2022-10-12 2023-10-11 Dispositif de traitement de matières fibreuses

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US (1) US20250290251A1 (fr)
EP (1) EP4602210A1 (fr)
WO (1) WO2024079177A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101220A1 (de) * 1981-01-16 1982-08-12 J.M. Voith Gmbh, 7920 Heidenheim Einrichtung zur aufloesung und sortierung von altpapier
DE102015206506A1 (de) 2015-04-13 2016-10-13 Voith Patent Gmbh Sortiervorrichtung
DE102015206499A1 (de) 2015-04-13 2016-10-13 Voith Patent Gmbh Auflösevorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3101220A1 (de) * 1981-01-16 1982-08-12 J.M. Voith Gmbh, 7920 Heidenheim Einrichtung zur aufloesung und sortierung von altpapier
DE102015206506A1 (de) 2015-04-13 2016-10-13 Voith Patent Gmbh Sortiervorrichtung
DE102015206499A1 (de) 2015-04-13 2016-10-13 Voith Patent Gmbh Auflösevorrichtung

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EP4602210A1 (fr) 2025-08-20
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