EP2873771A1 - Triturateur doté d'un réacteur et procédé de fonctionnement d'un réacteur - Google Patents

Triturateur doté d'un réacteur et procédé de fonctionnement d'un réacteur Download PDF

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Publication number
EP2873771A1
EP2873771A1 EP20140003471 EP14003471A EP2873771A1 EP 2873771 A1 EP2873771 A1 EP 2873771A1 EP 20140003471 EP20140003471 EP 20140003471 EP 14003471 A EP14003471 A EP 14003471A EP 2873771 A1 EP2873771 A1 EP 2873771A1
Authority
EP
European Patent Office
Prior art keywords
unit
pulp
pulper
units
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20140003471
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German (de)
English (en)
Inventor
Hans-Joachim Boltersdorf
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.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2873771A1 publication Critical patent/EP2873771A1/fr
Withdrawn legal-status Critical Current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
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/345—Pulpers

Definitions

  • the invention relates to a pulper with a reactor having a plurality of units, each having on a shaft a circulating means, wherein the shaft is arranged horizontally and each unit has a curved screen area.
  • the invention is therefore the object of developing a generic pulper so that with simple control devices, a relief of the shaft and an adjustment of the consistency in the units can be achieved.
  • the central transfer of the substance from one unit to another unit of the pulper corresponds indeed to the material flow and leads to particularly short cable paths.
  • the removal in the central area leads around the middle shaft, to convey a thick pulp material, which is difficult to convey in the transition from one unit to the other unit.
  • the WO 2013/13655 A2 suggests to add water in this area. However, this can lead to unwanted dilution of the pulp in the units.
  • the decentralized removal makes it possible to remove pulp from a unit in a fluidically calmed area and to restrict or even seal the flow of substance along the shaft from one unit to the adjacent unit. As a result, the shaft is greatly relieved, so that several units can be driven by a shaft.
  • the substance discharge line is arranged in the upper region of a unit.
  • the substance discharge is preferably located at the uppermost point of a unit radially within the sieve region. This makes it possible to keep the unit always filled, since only with a filling up to the area of Stoffaustrags admir a removal from the pulp unit is possible.
  • the liquid withdrawal of the pulper is in this upper region to ensure a defined filling level in the pulper even during continuous operation.
  • the horizontal design makes it possible to work with several units connected in series, without increasing the overall height.
  • the height is determined by the diameter of a unit, which can be adapted to local conditions. With a given maximum overall height, the power of the pulper can thus be varied by varying the length of the units and the number of adjacent units.
  • the construction described makes it possible to arrange a Schwerteil catching easily in the lower part of a unit.
  • the Schwerteilmaschinefang lies thereby in the direction of gravity below the horizontal shaft, preferably at a lateral end of a unit.
  • the stock discharge line has a water inflow.
  • the water supply can be arranged so that the water does not flow back into the unit, but in particular in the direction of flow of the pulp, which facilitates the flow of pulp to the next unit.
  • the preferably diluted with water pulp can be passed either in a range between two units or directly into the next unit.
  • the introduction of the substance discharge line into the adjacent unit makes it possible to position the units very close to one another.
  • the mixing pump has the advantage that it combines the conveying of the pulp with a mixing process.
  • a unit is cylindrical. This makes it possible to easily arrange the curved screen area within the unit parallel to a cylindrical wall.
  • the Stoffaustragstechnische can be arranged tangentially in a cylindrical unit.
  • the Stoffaustragstechnisch is arranged such tangential to the cylindrical unit, that by the rotational movement of the shaft in the unit, a recirculation movement is achieved, which promotes pulp for Stoffaustragstechnisch.
  • an axis is predetermined by the shaft to the coaxial initially a curved screen plate can be arranged around which can also be provided coaxially with the shaft, a cylindrical wall of the unit.
  • the tangential arrangement the Stoffaustragstechnisch then corresponds to a tangent to a coaxial with the shaft extending circle.
  • This circular line is preferably located on a wall of the unit, which may also be an end wall of a substantially cylindrical unit.
  • the units have a Faserstoffaustragstechnisch which is arranged in the upper region of the unit in order to remove pulp from the unit there.
  • the upper portion of the unit is located above the shaft and the location of removal of the pulp from the unit is preferably selected so that the Faserstoffaustragstechnisch draws air when the filling of the unit is not completely enough for Faserstoffaustragstechnisch.
  • a variable Faserstoffaustrags endeavour be provided, which makes it possible to take pulp from the unit at different heights of the unit.
  • a Faserstoffaustragstechnisch may be provided on a unit which is guided in the height of the upper portion of the unit. According to the law of communicating tubes, this means that the liquid level can be adjusted in the pulper via the Faserstoffaustragstechnisch and can be ensured by the formation of the line to ensure that the pulper can only be drained via the line, if the line then back on a lower level is led.
  • a structurally simple construction of such a pulper is achieved in that the circulation devices of adjacent units are arranged on the same shaft. This makes it possible to drive the circulation of the entire pulper with a motor or with an engine arranged at each shaft end.
  • An advantageous circulation within the units arises from the fact that the circulation device of a unit has opposing spirals. This makes it possible, for example, to generate a pulp stream which flows radially outward at the end faces of a cylindrical unit and flows radially inward in a central region of the cylindrical unit. However, it is also possible to set the opposite flow direction through the formation of the counter-rotating spirals in order to achieve a friction between two streams in the middle of the unit.
  • the object underlying the invention is also achieved with a method for operating a pulper, which is preferably a pulper as described above, in which a first cylindrical, lying unit is filled with pulp, the pulp is processed with a circulating device, radially through a sieve region Pulp is attracted and decentralized in the upper part of the unit radially within the screening area pulp withdrawn, diluted and fed to an adjacent unit.
  • the decentralized removal and preferably also decentralized feeding of the pulp to the units allows a compact construction and short lines for transferring the pulp from a unit to the adjacent unit while relieving a shaft connecting the units.
  • a unit remains at least 80% filled during processing and is preferably filled to over 90%.
  • the pulper may be used to further treat pulp separated in a first unit in another unit to optionally post-treat the pulp with a finer sieve.
  • the pulp is continuously passed through several units, thereby removing pulp from the pulp in each unit so that pulp is obtained in each unit and pulp freed from pulp at the end of the pulper.
  • the pulper 1 shown in the figure has a reactor 2 with three units 3, 4 and 5. Through these cylindrical units extends a central shaft 6, on each of which a circulating device 7, 8, 9 is provided for each unit. Each circulating device has in each case two opposing spirals 10 to 15.
  • each unit has a cylindrical jacket area 17 and a curved screen area 18 arranged radially inside this jacket area.
  • a Stoffaustrags Arthur 20 is provided which is arranged decentralized between the shaft 6 and the screen area 18 to allow the removal of pulp radially within the screen area 18.
  • a heavy part catch 21 is provided, which makes it possible to remove from the area radially within the wire section 18 heavy parts.
  • the further units 4 and 5 are formed accordingly, wherein the axial extent 16 of the cylindrical screen portion 18 and the cylindrical wall 17 arranged thereabout are made smaller by a unit to the adjacent unit.
  • the further units 4 and 5 also have their own access for new pulp, it may be advantageous to form a plurality of adjacent units of approximately the same size.
  • the Stoffaustrags Arthur 20 has a mixing pump 22 and a water inlet 23, which make it possible to mix pulp, which is conveyed from one unit to the next unit, and liquefy.
  • the thus treated pulp is added to a screw conveyor 24, which is arranged on the shaft 6 between the units 3 and 4. This ensures that the pulp is not conveyed along the shaft 6 of the unit 3 in the unit 4, but initially spaced radially from the shaft 6 is removed from the unit 3, then mixed and can be diluted and only then via the screw conveyor 24 of unit 4 is added.
  • the pulp when using a mixing pump 22 or another pump for the pulp, the pulp can be fed directly to an adjacent unit without screw conveyor 24.
  • the unit 3 has a Faserstoffaustrags réelle 25 which begins in the area between the screen area 18 and the cylindrical wall 17 and is guided in a height between the shaft 6 and the overlying cylindrical wall 17 in order not to unity with the Faserstoffaustrag drain.
  • This conduit 25 may also be led to a higher level to ensure that the entire unit 3 remains filled with water and pulp or even increased water pressure is created within the unit.
  • the pulp discharge line 26 serves to discharge pulp from the units 4 and 5.
  • first pulp 27 and water 28 are brought together in the entrance area 29 and introduced into the unit 3 centrally.
  • a worm (not shown) may already be provided in the entrance area.
  • the pulp 27 and water 28 can also be supplied to the front side preferably in the upper region of the unit 3.
  • a flow is achieved by means of the volutes 10 and 11 of the circulation device 7, which axially and circumferentially guides the pulp along the screening area 18 to separate fibers in the unit 3 from the pulp and into a radial space via the screening area 18 to lead outside area, from which the fibers are discharged via the Faserstoffaustragstechnisch 25.
  • the shaft 6 is driven at the end 31 and stored at the opposite end 32.
  • the thus pretreated pump 27 is then removed via the Stoffaustragstechnisch 20 from the reactor 3 and homogenized via the mixing pump 22 and the water inlet 23 and fed to the adjacent unit 4. There, the pulp is further treated according to the treatment in the first reactor 3 and pulp is discharged via the line 26. The pulp passes through the Stoffaustragstechnisch 33 with mixing pump 34 and water inlet 35 into the third unit 5. There, pulp is again separated and fed to the line 26 to finally remove the pulp freed largely of pulp via the Stoffaustrags effet 36 from the reactor 2.
  • the pulper is shown with a three unit reactor 3, 4, 5 to illustrate the principle of the pulper.
  • the pulper can also have more or fewer units and the radial and axial extents of the units can be varied depending on the application.
  • the advantage remains that the horizontal construction leads to a pulper, which can be easily placed in halls with limited room height.
  • the feed and discharge lines in an upper area of the pulper make it easier to maintain a filling level in the units and reduce the control effort.
  • the horizontal pulper is particularly suitable for a continuous process.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
EP20140003471 2013-11-15 2014-10-09 Triturateur doté d'un réacteur et procédé de fonctionnement d'un réacteur Withdrawn EP2873771A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013019052 2013-11-15
DE102014003020.2A DE102014003020A1 (de) 2013-11-15 2014-03-07 Pulper mit einem Reaktor sowie Verfahren zum Betreiben eines Reaktors

Publications (1)

Publication Number Publication Date
EP2873771A1 true EP2873771A1 (fr) 2015-05-20

Family

ID=51900060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20140003471 Withdrawn EP2873771A1 (fr) 2013-11-15 2014-10-09 Triturateur doté d'un réacteur et procédé de fonctionnement d'un réacteur

Country Status (2)

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EP (1) EP2873771A1 (fr)
DE (1) DE102014003020A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4604193A (en) * 1983-03-25 1986-08-05 E Et M Lamort S.A. Method and apparatus for sorting out a mixture of paper pulp and contaminants
WO2013013655A2 (fr) * 2011-07-26 2013-01-31 Hans-Joachim Boltersdorf Triturateur doté d'un arbre et procédé de traitement de matières composites

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4604193A (en) * 1983-03-25 1986-08-05 E Et M Lamort S.A. Method and apparatus for sorting out a mixture of paper pulp and contaminants
WO2013013655A2 (fr) * 2011-07-26 2013-01-31 Hans-Joachim Boltersdorf Triturateur doté d'un arbre et procédé de traitement de matières composites

Also Published As

Publication number Publication date
DE102014003020A1 (de) 2015-05-21

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