WO2011069704A2 - Appareil de dispersion iv - Google Patents

Appareil de dispersion iv Download PDF

Info

Publication number
WO2011069704A2
WO2011069704A2 PCT/EP2010/064899 EP2010064899W WO2011069704A2 WO 2011069704 A2 WO2011069704 A2 WO 2011069704A2 EP 2010064899 W EP2010064899 W EP 2010064899W WO 2011069704 A2 WO2011069704 A2 WO 2011069704A2
Authority
WO
WIPO (PCT)
Prior art keywords
teeth
tooth
treatment tool
groove
dispergiervornchtung
Prior art date
Application number
PCT/EP2010/064899
Other languages
German (de)
English (en)
Other versions
WO2011069704A3 (fr
Inventor
Oliver Lüdtke
Roland Rauch
Werner Brettscneider
Bernd Kraft
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 ATGM50048/2012U priority Critical patent/AT12916U1/de
Priority to CN2010900014724U priority patent/CN203080348U/zh
Priority to DE201021000171 priority patent/DE212010000171U1/de
Publication of WO2011069704A2 publication Critical patent/WO2011069704A2/fr
Publication of WO2011069704A3 publication Critical patent/WO2011069704A3/fr

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/53—Mixing liquids with solids using driven stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B01F27/2711—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator provided with intermeshing elements
    • 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
    • D21D1/004—Methods of beating or refining including disperging or deflaking
    • D21D1/006—Disc mills
    • 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
    • D21D1/004—Methods of beating or refining including disperging or deflaking
    • D21D1/006—Disc mills
    • D21D1/008—Discs
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Definitions

  • the invention relates to a dispersing device for dispersing pulp with a housing, in which a first treatment tool and a second treatment tool is arranged, wherein the treatment tools each have a rotationally symmetrical shape, are arranged coaxially to each other, each arranged in a plurality of annular, concentric to their center rows Teeth between which there are tooth gaps, which are flowed through radially by the fibrous material and annular spaces are present between the rows of teeth, which are arranged so that at least one row of teeth of a treatment tool extends into an annular space of the other, complementary treatment tool.
  • Devices of the above-mentioned Art be z. B. used to improve the quality of pulp, which was obtained from waste paper. It is known that paper pulp can be homogenized by dispersing and thereby significantly improved. In many cases, a pulp is used which has a dry content of between 15 and 35% and has been brought to a temperature which is far above the ambient temperature. It makes sense, the heating then
  • the object of the invention is therefore to improve the dispersion with the least possible wear of the treatment tools.
  • this object is achieved in that at least some teeth of at least one treatment tool have at least one radially extending groove which extends at least partially over the tooth tip.
  • radially extending grooves are understood that at least with a directional component perpendicular to the circumferential direction of the treatment tool run.
  • the pulp suspension flows through the gap between the
  • Treatment tools usually from the inside out. While the treatment tools move relative to each other, the radially extending grooves, in particular because they extend at least over the tooth head, additional working edges, which improves the dispersion, in particular the Schmutzticianzerkleintechnik, the ink separation and the Stickyzerkleintation.
  • the vast majority preferably all teeth of at least one row of teeth, preferably one
  • Treatment tool and in particular all teeth of the disperser at least one, at least partially over the tooth head extending, radially extending groove possess.
  • Working edges be advantageous if a part of the teeth, preferably all the teeth have a plurality of radially extending grooves.
  • the radially inner and outer tooth flank of a tooth and / or the opposite tooth flanks of adjacent tooth rows have at least one, in particular only over a part of the distance between the tooth base and the tooth head extending radially extending groove.
  • the area of the tooth head is particularly sensitive, because there the layer thickness of the pulp suspension is usually higher than in the region of the tooth flanks.
  • the radial groove in the tooth tip should be as deep as possible. Therefore, it is advantageous if the maximum depth of the radial groove in the tooth tip between 4 and 12 mm, preferably between 5 and 8 mm.
  • the radial groove extends at least for a part of the teeth, preferably for all teeth only over the tooth tip.
  • the radial groove should extend beyond at least a portion of the teeth, preferably all teeth beyond the tooth tip. It is advantageous if the radial groove on both sides, i. extends into the region of the radially inner and outer tooth flank.
  • the wear can be reduced and the flow of material can be improved if the groove bottom of the radial groove in the region of the tooth head is convexly curved.
  • a plurality of radial grooves in the circumferential direction can be arranged side by side.
  • the radially extending grooves are arranged radially one behind the other and / or radially offset from each other.
  • Tooth surface remains constant or preferably enlarged.
  • At least one radially extending groove is located in the tooth base.
  • a counter surface for the tooth head of the tooth base is particularly important, especially for the creation of counter-working edges.
  • some teeth preferably the majority of teeth and in particular all teeth of at least one row of teeth, preferably at least one treatment tool and
  • all teeth of the disperser have at least one groove running in the circumferential direction. According to the requirements, it may be sufficient if a part of the teeth, preferably all teeth have only one groove running in the circumferential direction. However, it may also be necessary for a portion of the teeth, preferably all teeth, to have a plurality of circumferentially extending grooves.
  • the groove extending in the circumferential direction can be located on the tooth tip and / or on a radially inner or outer tooth flank.
  • the radially inner and outer tooth flank of a tooth or the opposite tooth flanks of adjacent rows of teeth have at least one groove extending in the circumferential direction.
  • the radially extending grooves should not be deeper than the grooves extending in the circumferential direction.
  • the radial cross section of the teeth is formed in the shape of a truncated pyramid.
  • Pulp suspension both treatment tools can be formed by oppositely driven rotors. In most cases, however, a treatment tool is formed by a drivable rotor and the second treatment tool by a stationary stator.
  • a treatment tool is formed by a drivable rotor and the second treatment tool by a stationary stator.
  • FIG. 1 shows a schematic cross section through a dispersing device
  • FIG. 2 shows a plan view of a treatment tool 3
  • FIGS. 3a + b different tooth cross sections in the radial direction
  • Figures 4a + b the two views according to the section in Figure 3;
  • FIGS. 5a + b further tooth cross sections in the radial direction
  • FIG. 6a + b the two views according to section in Figure 5.
  • the highly consistent paper pulp 1 is pressed directly into the central area of the disperser set, which is formed by the two treatment tools 3, 4.
  • While a treatment tool 3 is stationary and thus designed as a stator, the other treatment tool 4 is rotatably mounted in the housing 2 of the disperser.
  • Dispergergarnitur with the stator and the rotor is thus fed radially inward.
  • dispersion is effected by moving teeth 6 relatively close together relatively close together and subjecting the fibrous material 1 therebetween to strong shear forces.
  • the pulp 1 can be previously heated by superheated steam. After dispersion, the dispersed pulp 1 falls down through the outlet 12.
  • the treatment tools 3,4 each have a rotationally symmetrical shape.
  • the coaxially arranged treatment tools 3,4 each have in a plurality of annular, concentric to their center rows 5 arranged teeth 6, between which there are tooth gaps, which are flowed through by the pulp 1 radially outward.
  • annular spaces are provided, which are arranged so that at least one row of teeth 5 of a treatment tool 3,4 in an annular space of the other, complementary
  • Treatment Tool 4.3 extends. As shown in Figures 2 to 6, have the truncated pyramidal teeth 6 radially extending grooves 8,9,15. These grooves 8,9,15 form additional
  • Essential for the invention are the radial grooves 9 that extend at least over the tooth tip 10 and that can occur alone or in combination with other radial grooves 8, 15 and / or circumferential grooves.
  • the width of the radial grooves 8, 9, 15 should be approximately between 1, 5 and 2.5 mm.
  • the existing radial groove 9 should be as deep as possible.
  • the maximum depth of the radial groove 9 in the tooth tip 10 should be between 4 and 12 mm, preferably between 5 and 8 mm.
  • FIG. 3a indicates the possibility of extending the radial groove 9 of the tooth head 10 to different degrees into the tooth flank 11. For example, a longer extent may be opposite to the direction of flow, i. at the radially inner
  • Tooth flank 1 1 be advantageous. In general, over the groove extension of the flow can be more or less promoted, and it is also important whether this is a stator or a rotor.
  • a radially extending groove 15 in the tooth base 14 is realized between the teeth 6 of FIGS. 3 to 6, which creates counter-working edges opposite the tooth head 10 of the other treatment tool 3. 4.
  • the teeth 6 shown in Figures 5 and 6 each have one or more separate, radially extending grooves 8 in the region of the tooth flanks 1 1 to form further working edges.
  • the depth of the radial groove 8 of the tooth flanks 1 1 changes in the longitudinal direction.
  • the radially inner and outer tooth flanks 11 of the tooth 6 each have a radial groove 8 which, however, is spaced from the tooth tip 10 and the tooth base 14.
  • the radial grooves 8 each have an approximately perpendicular to the radial direction or the plane of rotation of the treatment tool 3.4 groove bottom 13th
  • the width of the radial grooves 8 in the direction of the tooth flank 1 1 increases slightly, which facilitates the casting of the grooves 8.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Crushing And Grinding (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

L'invention concerne un appareil de dispersion servant à disperser une matière fibreuse (1), qui comprend un boîtier (2) dans lequel sont disposés un premier outil de traitement (3) et un second outil de traitement (4), lesdits outils de traitement (3, 4) ayant respectivement une forme à symétrie de rotation, étant disposés coaxialement l'un par rapport à l'autre et présentant respectivement des dents (6) agencées en plusieurs rangées (5) annulaires concentriques à leur centre. Lesdites dents présentent des entredents entre elles, qui sont parcourus dans le sens radial par la matière fibreuse (1). Entre les rangées de dents (5), des espaces intermédiaires annulaires sont ménagés de sorte qu'au moins une rangée de dents (5) d'un outil de traitement (3, 4) parvienne dans un espace intermédiaire annulaire de l'autre outil de traitement complémentaire (4, 3). A cet effet, la dispersion doit être améliorée, en ce qu'au moins quelques dents (6) d'au moins un outil de traitement (3, 4) comportent au moins une rainure (9) radiale qui s'étend sur la tête de la dent (10):
PCT/EP2010/064899 2009-12-08 2010-10-06 Appareil de dispersion iv WO2011069704A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ATGM50048/2012U AT12916U1 (de) 2009-12-08 2010-10-06 Disperger IV
CN2010900014724U CN203080348U (zh) 2009-12-08 2010-10-06 分散装置
DE201021000171 DE212010000171U1 (de) 2009-12-08 2010-10-06 Disperger IV

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009047659A DE102009047659A1 (de) 2009-12-08 2009-12-08 Disperger IV
DE102009047659.8 2009-12-08

Publications (2)

Publication Number Publication Date
WO2011069704A2 true WO2011069704A2 (fr) 2011-06-16
WO2011069704A3 WO2011069704A3 (fr) 2011-09-15

Family

ID=43972013

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/064899 WO2011069704A2 (fr) 2009-12-08 2010-10-06 Appareil de dispersion iv

Country Status (4)

Country Link
CN (1) CN203080348U (fr)
AT (1) AT12916U1 (fr)
DE (2) DE102009047659A1 (fr)
WO (1) WO2011069704A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11208763B2 (en) * 2018-10-29 2021-12-28 Andritz Inc. Supported toothed plates in a disperser
US11859344B2 (en) 2018-10-29 2024-01-02 Andritz Inc. Supported toothed plates in a disperser with buttress extending from the substrate and between a first face of a tooth

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19541892C1 (de) * 1995-11-10 1996-11-21 Voith Sulzer Stoffaufbereitung Vorrichtung zur mechanischen Behandlung von hochkonsistentem Faserstoff
DE102008007888A1 (de) * 2008-02-07 2009-08-13 Voith Patent Gmbh Vorrichtung zur Bearbeitung von Faserstoff für die Papier- oder Kartonerzeugung
US8342437B2 (en) * 2009-04-23 2013-01-01 Andritz Inc. Deflaker plate and methods relating thereto

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
AT12916U1 (de) 2013-02-15
CN203080348U (zh) 2013-07-24
DE212010000171U1 (de) 2012-06-26
WO2011069704A3 (fr) 2011-09-15
DE102009047659A1 (de) 2011-06-09

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