WO1985004431A1 - Procede et appareil pour raffiner un materiau contenant de la lignocellulose - Google Patents

Procede et appareil pour raffiner un materiau contenant de la lignocellulose Download PDF

Info

Publication number
WO1985004431A1
WO1985004431A1 PCT/SE1985/000102 SE8500102W WO8504431A1 WO 1985004431 A1 WO1985004431 A1 WO 1985004431A1 SE 8500102 W SE8500102 W SE 8500102W WO 8504431 A1 WO8504431 A1 WO 8504431A1
Authority
WO
WIPO (PCT)
Prior art keywords
refiner
gap
liquid
passageways
pressure
Prior art date
Application number
PCT/SE1985/000102
Other languages
English (en)
Inventor
Axel Henning SJÖBOM
Original Assignee
Sunds Defibrator Aktiebolag
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 Sunds Defibrator Aktiebolag filed Critical Sunds Defibrator Aktiebolag
Publication of WO1985004431A1 publication Critical patent/WO1985004431A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/30—Disc mills

Definitions

  • This invention relates to the refining of fibrous mater ⁇ ial, for example lignocellulose-containing material, in an apparatus comprising two opposed refiner members, at least one of which is rotatable, and which between them ⁇ selves form a gap for processing the lignocellulose-cont ⁇ aining material.
  • the material is fed into the gap in the form of an aqueous dispersion, so that the material moves outward from within and is processed (refined) simult ⁇ aneously between the refiner members.
  • This process ⁇ ing great heat amounts develop, which can cause the water to evaporate.
  • the reduction of water content caused hereby in the material can unfavourably affect the result of the refining process.
  • the .water content is too low, the material can be overheated locally and thereby be damaged and miscoloured. This applies especially to refiners with refiner members, which have a large extens ⁇ ion in radial direction, which in other respects is des ⁇ irable for intensifying the refining of the material.
  • a remaining problem is to establish an effect ⁇ ive control of the water supply, because it is very diff ⁇ icult to observe and record the conditions prevailing in the gap in respect of pressure, temperature and concentrat ⁇ ion.
  • the first refining phase is to be carried out with too great an amount of water, as otherwise there would not be a sufficient liquid amount throughout the entire gap. Too much liquid at the beginning, however, results in too low a temperature and in inferior quality of the fibres refined.
  • the present invention solves the aforesaid problem and at the same time provides a simple and reliable apparatus.
  • the liquid is supplied through passageways in a rotating refiner member, a suit ⁇ able pressure in the liquid is obtained by the rotation of said member.
  • This pressure is determined by the rot ⁇ ary speed of the refiner member and by the radial distance between the axis of rotation of the refining member and the opening of the passageway into the gap. This pressure must exceed the pressure in the gap.
  • the liquid supply can thereby be controlled so that correct liquid amount and temperature are obtained in the gap.
  • the fibre qual ⁇ ity is hereby improved, i.e. the fibres are longer and more fibrillated, and the shives content is reduced.
  • Fig. 1 is a cross- -section through a refiner housing comprising two count ⁇ er-rotating refiner members
  • Fig. ' 2 is a section along A-A in Fig. 1
  • Fig. 3 is a cross-section through a second embodiment comprising two counter-rotating refiner memb ⁇ ers
  • Fig. 4 is a cross-section through a further embodim ⁇ ent comprising counter-rotating refiner members
  • Fig. 5 is a section along A-A in Fig. 4, Figs.
  • FIG. 6 arid 7 are cross- -sections through two further embodiments comprising counter-rotating refiner members, ig. " 8 is a section along A-A in Fig. 7, Fig. 9 is a cross-section through an embodiment comprising one stationary and one rotatable refiner member, Fig. 10 shows the . location of the liquid supply passageway at the embodiment shown in Fig. 9.
  • Fig. 11 is a cross-sec-tion through another embodiment com ⁇ prising one stationary and one rotatable refiner member, Fig. 12 shows a further embodiment comprising one station ⁇ ary and one rotatable refiner member, Fig. 13 shows a nozzle for the supply of liquid to the gap between the refiner members, and Fig; 1*4 shows a detail of a refiner member where the nozzle is located.
  • the embodiment shown in Fig. 1 comprises a pressure-proof refiner housing 1, in which a first and a second refiner member 2,3 rotatable in opposed directions are located.
  • the members 2,3 are supported ' each on a rotary shaft 4,5 mounted outside the refiner housing 1.
  • the refiner members 2,3 are provided on their surfaces facing toward each other with refiner disc segments 6,7, between which a gap 8 is formed.
  • the first refiner member 2 is provided with apertures 9 for the supply of the material to be refined.
  • a supply opening 10 is provided for feeding the material to the apertures 9-
  • the second ref ⁇ iner member 3 is located on the shaft 5, . .which is axially movable for adjusting the gap 8. Outside the refiner memb ⁇ ers 2,3 an outlet 11 for the discharge of refined mater ⁇ ial from the refiner housing 1 is located.
  • the first refiner member 2 is provided with a plurality of passageways 12 for liquid which extend from an axial passageway 13 in the centre of the shaft 4 radially outward in the refiner member 2 and open into the gap 8 at diff ⁇ erent radial distances from the centre.
  • the liquid is supplied through a conduit 14 to the shaft 4 via a seal ⁇ ing box 15, which comprises an annular liquid chamber I ⁇ communicating with radial apertures 17 in the shaft 4. These apertures 17 lead ' inward to the axial passageway 13 in the centre of the shaft 4.
  • Fig. 3 corresponds in principle to the first embodiment. Corresponding details have been given the same reference numerals.
  • the liquid, however, is supplied through the second refiner member 3.
  • the shaft 5 is here providedwith four axial passageways 18,19, which are conn ⁇ ected to two separate liquid supply conduits 20,21.
  • the liquid is transferred via a sealing box 15 having two annular liquid chambers 23,24, each of which communicates with two of the axial passageways 18 and, respectively, 19.
  • the second refiner member 3 comprises radial passageways 25, ⁇ , which communicate with the axial passageways 18,19.
  • the radial passageways 25,26 open into the gap 8 at diff ⁇ erent radial distances from the centre, so that liquid from the conduit 20 is supplied to the gap 8 through the passageways 25, and liquid from the conduit 21 is supplied to the gap through the passageways 26.
  • Fig. 6 corresponding details are designated as in Figs. 1, 3 and 4.
  • Liquid is here supplied through a conduit 14 via a sealing box 15 to an axial passageway 27 in the centre of the axle 4.
  • This axial passageway 27 is extend ⁇ ed by a pipe 28, which extends outward from the shaft end into a space 28 in the end portion of the opposed shaft 5.
  • radial passageways 12 extend outward in the second refiner member 3.
  • Figs. 7 and 8 an apparatus is shown where the liquid is supplied from the free end of the shaft 4.
  • the shaft 4 is here provided with six axial passageways 30, which are connected in pairs to a device 31 for transferring liquid from conduits 32 to the shaft 4.
  • the transfer dev ⁇ ice 31 like the aforesaid sealing boxes, comprises annul ⁇ ar liquid chambers 33, from which the liquid is led into the shaft 4.
  • the radial passageways 3 in the refiner memb ⁇ er 2 open in pairs at different radial distances from the axis of rotation. According to this embodiment, these passageways 3 are provided behind the refiner dis.c segm-S ents 6 with pockets 35 intended to cool the refiner memb ⁇ er by means of the liquid supplied. The liquid is passed from the pockets 35 into the gap 8.
  • Figs. 9 and 10 show an embodiment where a pressure-proof refiner housing 40 encloses a stationary refiner member 41 and a rotatable refiner member 42. The latter is att ⁇ ached on a rotary shaft 43, which extends outward from the refiner housing 40 and is supported outside thereof.
  • a sealing box 44 is provided between the refiner housing and the shaft.
  • refiner member 4l,42 refiner disc segments 45,46 are located, which between themselves def ⁇ ine a gap 47.
  • the stationary refiner member 4l is formed with a central opening 48 for the supply of the material to be refined.
  • the feed is ensured by a screw feeder 49.
  • the rotatable refiner member 42 is axially movable in that the shaft 43 can be moved in axial direction.
  • the refiner housing 40 is provided with an outlet 11 outside the refiner memb ⁇ ers 41,42.
  • the rotatable refiner member 42 is provided with a plur ⁇ ality of passageways 0 for liquid. These passageways ex ⁇ tend from the centre of the shaft 43 radially outward in the refiner member and open into the gap 47 at different radial distances from the centre, as shown in Fig. 10.
  • the liquid is supplied through the conduit 51 to an annul ⁇ ar liquid chamber 52 in the sealing box 44. This chamber 52 communicates with radial apertures 53 in the shaft 43 which lead inward to a central axial passageway 5 in the shaft.
  • Said passageway 54 extends to the radial passageways 50.
  • radial passageways 55,56,57 which open at diff ⁇ erent radial distances from the centre, are connected to separate conduits, in principle as shown in Figs. 4 and 5.
  • the shaft 43 can be formed with six axial passageways 58, which are connected in pairs to each supply conduit, either via a sealing box 44 or from the end of the shaft 43.
  • a variant of the invention is shown where a stationary refiner member 59 co-operates with a rotatable one 60, but where the gap 4 is formed with an inner radial portion and an outer angled portion.
  • the embodiment agrees in principle with Fig. 9.
  • Radial passageways 50 for liquid supply to the gap 47 open both into the radial portion of the gap and into the angledone thereof.
  • Fig. 13 is shown by way of example how the radial passageways 12 open into the gap 8.
  • the first and, resp ⁇ ectively, the second refiner member 2 and, respectively, 3 are provided with refiner disc segments 6,7, the surface of which is formed with longitudinal members 6r,62 -for proces ing the material passing through the gap 8.
  • flow restrict ⁇ ions 63 are provided between the members 61 so that the material on its way out is forced upward from the grooves between the members 61.
  • a nozzle 64- is connected to the passageway 12 so that its mouth 65 is directed in the flow direction of the material.
  • the mouth portion of the nozzle 64 thus extends outward through the refiner disc segment 7 and constit ⁇ utes an integrated portion of the surface of the segment.
  • the nozzle 64 is located in a bore 66 in the refiner memb ⁇ er 3 and retained in place by a bolt 67.
  • the nozzle 64 communicates with the passageway 12 through a recess 68 extending all about,- which is surrounded by sealings 69. From said recess 68 a passageway 70 extends all the ' way to the mouth 65.
  • the nozzle mouth alternatively, can be directed across the gap 8.
  • the liquid supply to the gap can be adjusted by varying the design of the nozzle 64 and the size of the passage ⁇ way 70. Different nozzles, thus, can be used for different diameters of the refiner member so that each portion of the gap is supplied with the desired amount of liquid.
  • the liquid flow through the radial passageways in the refiner members can also be varied by adjusting the supply of liquid through the conduits.
  • nozzles can be used in all embodim ⁇ ents of the invention described above.

Landscapes

  • Paper (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

Un appareil pour raffiner un matériau contenant de la lignocellulose comporte un boîtier de raffinage étanche à la pression (1, 40) doté d'organes de raffinage opposés (2, 3, 41, 42, 59, 60) déterminant entre eux un intervalle (8, 47). Le liquide est amené à l'intervalle via des passages radiaux (12, 25, 26, 34, 50, 55, 56, 57) dans un organe de raffinage rotatif (2, 3, 42, 60) et la rotation de l'organe de raffinage provoque la pression désirée dans le liquide, pression dépassant la pression régnant dans l'intervalle.
PCT/SE1985/000102 1984-04-03 1985-03-08 Procede et appareil pour raffiner un materiau contenant de la lignocellulose WO1985004431A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8401845-6 1984-04-03
SE8401845A SE8401845D0 (sv) 1984-04-03 1984-04-03 Sett och anordning for raffinering av lignocelulosahaltigt material

Publications (1)

Publication Number Publication Date
WO1985004431A1 true WO1985004431A1 (fr) 1985-10-10

Family

ID=20355429

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1985/000102 WO1985004431A1 (fr) 1984-04-03 1985-03-08 Procede et appareil pour raffiner un materiau contenant de la lignocellulose

Country Status (4)

Country Link
EP (1) EP0175744A1 (fr)
AU (1) AU4068985A (fr)
SE (1) SE8401845D0 (fr)
WO (1) WO1985004431A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006112769A1 (fr) * 2005-04-18 2006-10-26 Metso Panelboard Ab Logement de disques
EP2182109A2 (fr) * 2008-10-31 2010-05-05 Metso Paper Inc. Procédé de fabrication de raffineur, et raffineur
US11628446B2 (en) 2019-09-23 2023-04-18 Andritz Inc. Flinger apparatus for a counter-rotating refiner

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB243052A (en) * 1924-08-16 1925-11-16 Rissik Fraser & Company Ltd Improvements in and relating to colloid mills, and drying, concentrating, mixing, emulsifying, grinding, and like machines
DE645438C (de) * 1935-12-15 1937-05-27 Eisengiesserei Scheibenmuehle mit Mahlringen
GB483581A (en) * 1936-10-22 1938-04-22 Joseph Eirich A process for the production of a homogeneous, fine-fibred or finely powdered material
US3302893A (en) * 1964-02-18 1967-02-07 Wedco Disc mill
US3790092A (en) * 1971-03-16 1974-02-05 Reinhall Rolf Grinding apparatus
US4253613A (en) * 1978-02-17 1981-03-03 Reinhall Rolf Bertil Method and apparatus for controlling the effect of the centrifugal force on the stock in pulp defibrating apparatus
US4283016A (en) * 1979-03-16 1981-08-11 Reinhall Rolf Bertil Method and apparatus for controlling the effect of the centrifugal force on the stock in pulp defibrating apparatus
GB2107210A (en) * 1981-10-16 1983-04-27 Sca Development Ab Method and apparatus for the manufacture of cellulose pulp
US4401280A (en) * 1980-09-08 1983-08-30 Sunds Defibrator, Inc. Disc-type pulp refining apparatus

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB243052A (en) * 1924-08-16 1925-11-16 Rissik Fraser & Company Ltd Improvements in and relating to colloid mills, and drying, concentrating, mixing, emulsifying, grinding, and like machines
DE645438C (de) * 1935-12-15 1937-05-27 Eisengiesserei Scheibenmuehle mit Mahlringen
GB483581A (en) * 1936-10-22 1938-04-22 Joseph Eirich A process for the production of a homogeneous, fine-fibred or finely powdered material
US3302893A (en) * 1964-02-18 1967-02-07 Wedco Disc mill
US3790092A (en) * 1971-03-16 1974-02-05 Reinhall Rolf Grinding apparatus
US4253613A (en) * 1978-02-17 1981-03-03 Reinhall Rolf Bertil Method and apparatus for controlling the effect of the centrifugal force on the stock in pulp defibrating apparatus
US4283016A (en) * 1979-03-16 1981-08-11 Reinhall Rolf Bertil Method and apparatus for controlling the effect of the centrifugal force on the stock in pulp defibrating apparatus
US4401280A (en) * 1980-09-08 1983-08-30 Sunds Defibrator, Inc. Disc-type pulp refining apparatus
GB2107210A (en) * 1981-10-16 1983-04-27 Sca Development Ab Method and apparatus for the manufacture of cellulose pulp

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006112769A1 (fr) * 2005-04-18 2006-10-26 Metso Panelboard Ab Logement de disques
US7648090B2 (en) 2005-04-18 2010-01-19 Metso Panelboard Ab Disc housing
EP2182109A2 (fr) * 2008-10-31 2010-05-05 Metso Paper Inc. Procédé de fabrication de raffineur, et raffineur
EP2182109A3 (fr) * 2008-10-31 2014-08-13 Valmet Technologies, Inc. Procédé de fabrication de raffineur, et raffineur
US11628446B2 (en) 2019-09-23 2023-04-18 Andritz Inc. Flinger apparatus for a counter-rotating refiner
SE545640C2 (en) * 2019-09-23 2023-11-21 Andritz Inc Flinger apparatus for a counter-rotating refiner

Also Published As

Publication number Publication date
AU4068985A (en) 1985-11-01
EP0175744A1 (fr) 1986-04-02
SE8401845D0 (sv) 1984-04-03

Similar Documents

Publication Publication Date Title
US4253613A (en) Method and apparatus for controlling the effect of the centrifugal force on the stock in pulp defibrating apparatus
US6634583B2 (en) Process and device for the dispersion of a fibrous paper material
US6024308A (en) Conically tapered disc-shaped comminution element for a disc refiner
US5200038A (en) Pulp refiner with fluidizing inlet
US4283016A (en) Method and apparatus for controlling the effect of the centrifugal force on the stock in pulp defibrating apparatus
US5335865A (en) Two-stage variable intensity refiner
US3942729A (en) Device for supplying treatment agent to ligno-cellulose containing material
JPS6315396B2 (fr)
US4878997A (en) Method and apparatus for manufacturing fibre pulp
AU645357B2 (en) Bearing system in a refiner
US4708711A (en) Pressure centrifuge
GB2083375A (en) Disc mills
US4059237A (en) System for feeding a double disc refiner
WO1985004431A1 (fr) Procede et appareil pour raffiner un materiau contenant de la lignocellulose
US4378092A (en) Method and apparatus for grinding pulp stock in pulp defibrating apparatus of the double rotating disc type
US4600475A (en) Refining apparatus with radial passageways for steam recovery
US3893631A (en) Twin refiner with double floating discs
US3843065A (en) Labyrinth seal ring for pulp refiner
US6315537B1 (en) Spin pump having a cooling sleeve surrounding the drive shaft
US4684073A (en) Apparatus for thickening and refining fibre-pulp suspensions
CA1057987A (fr) Dispositif de scellement permettant d'eviter la fuite d'une substance sous pression par l'ouverture de l'arbre de transmission dans le bati d'un defibreur ou d'une machine analogue
US4357208A (en) Method of making pulp
FI62369B (fi) Metod och apparat foer kontroll av centrifugalkraftens inverkan pao maelden i massafibreringsapparaten
US4395047A (en) Shaft seal with seal impeller for materials processing machinery
US4533148A (en) Sealing ring assembly for use in pulp refining equipment

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): AU FI JP NO US

AL Designated countries for regional patents

Designated state(s): AT DE FR GB SE