EP0985068B1 - Dispositif de deshydratation et de lavage de suspensions de matiere fibreuse - Google Patents

Dispositif de deshydratation et de lavage de suspensions de matiere fibreuse Download PDF

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Publication number
EP0985068B1
EP0985068B1 EP98928237A EP98928237A EP0985068B1 EP 0985068 B1 EP0985068 B1 EP 0985068B1 EP 98928237 A EP98928237 A EP 98928237A EP 98928237 A EP98928237 A EP 98928237A EP 0985068 B1 EP0985068 B1 EP 0985068B1
Authority
EP
European Patent Office
Prior art keywords
rolls
rollers
channels
discharge
washing
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.)
Expired - Lifetime
Application number
EP98928237A
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German (de)
English (en)
Other versions
EP0985068A1 (fr
Inventor
Johann Sbaschnigg
Wilhelm Mausser
Franz Petschauer
Johannes Kappel
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
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Filing date
Publication date
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Publication of EP0985068A1 publication Critical patent/EP0985068A1/fr
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Publication of EP0985068B1 publication Critical patent/EP0985068B1/fr
Anticipated expiration legal-status Critical
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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
    • D21D1/40—Washing the fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/20—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using rotary pressing members, other than worms or screws, e.g. rollers, rings, discs
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • D21C9/06—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents in filters ; Washing of concentrated pulp, e.g. pulp mats, on filtering surfaces
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/74—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders
    • D21F1/78—Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders with pressure

Definitions

  • the invention relates to a device for dewatering and washing Fibrous suspensions with two counter-rotating rollers, one Stock feed and a stock take, the headbox on both Separate rollers and to discharge the filter mat below the gap a discharge screw (6) is arranged between the two rollers.
  • WO 96/06221 A shows a two-roll press with an approximately arranged in the range of the horizontal diameter Stock feed. This does not allow the maximum range of girth be used.
  • FR 2 006 772 A shows a drainage of a fiber suspension on a roller, two superimposed in Fig. 3 Rollers are shown. Here two identical devices are stacked. Due to the different geodetic height and the joint roll acceptance on the lower roll is strong different conditions of the two fiber mats before Compress in gap 59. The fiber mat has here on top and bottom very different properties especially in terms of on drainage and degree of washing. In addition, with this arrangement an additional take-off roller is required. Furthermore, the Headbox not in the lower area of the rollers, but essentially between 3 a.m. and 4 a.m.
  • the aim of the invention is therefore to avoid the disadvantages mentioned and a device for dewatering and washing fibrous materials create that ensures a high drainage performance with laundry and advantageously a slight rewetting of the fiber mat having.
  • the headbox in the lower Area of the rollers is provided, the axes of the rollers in one horizontal plane, the rollers channels for filtrate removal and Channels have inlets arranged counter to the direction of rotation can be much easier and more reliable the fibrous web) and the use of a large part of the scope of the two rollers and thus a high efficiency of the device can be achieved.
  • the channels for the filtrate discharge, which are in the rollers are arranged, large amounts of filtrate and wash water dissipate easily. It can therefore also be a particularly cheap one Displacement washing can be realized.
  • the against the Inlets arranged in the direction of rotation are largely one Prewetting of the fibrous mat prevented. This allows the Efficiency of the device can be increased even further.
  • a favorable embodiment of the invention is characterized in that that a baffle connects to the headbox, the distance to Roll surface decreases continuously. This baffle allows generate a continuously increasing pressure on the fiber suspension and thus carry out a particularly favorable drainage.
  • An advantageous embodiment of the invention is characterized in that that a washing zone is arranged in the upper region of the two rollers is. This can result in both good drainage and then one good washing can be achieved.
  • a favorable further development of the invention is characterized in that that the washing zones are separated on both sides by a divider are, or alternatively the wash water task as a common wash pond can be carried out jointly for both sides.
  • a favorable further development of the invention is characterized in that that the channels also have openings that are aligned with the in the direction of rotation previous channel.
  • a favorable embodiment of the invention is characterized in that that the roller surface is designed as a perforated plate with large holes is, the holes of the perforated plate having a diameter in the range of Can have 10 to 25 mm. With this construction, the Costs are reduced because fewer holes are required and also the production can be carried out easily and cheaply.
  • a favorable further development of the invention is characterized in that that the rollers are individually covered with sieves. Through these sieves a particularly favorable drainage can be achieved. in particular the combination of these screens, supported by the perforated plates compared to the previous versions with small ones Steel jacket of a roller surface drilled holes (1 to 1.5 mm diameter) special advantages, in particular a reduction the risk of incrustation and cheaper cleaning options represents. Furthermore, it is easy to change the sieves, whereby the rollers can be designed to be cantilevered.
  • rollers can be pressed against each other.
  • the rollers e.g. with hydraulic cylinders or others suitable units are pressed together.
  • the rollers can be with hydraulic cylinders or others suitable units are pressed together.
  • An advantageous embodiment of the invention is characterized in that that the tops can be folded down. This enables easy expansion the rollers without major disassembly work.
  • FIG. 1 is a schematic representation of the 2 according to the invention
  • FIG. 2 a detailed illustration
  • FIG. 3 a section X from Fig. 2
  • Fig. 4 is a view in the direction IV in Fig. 2 represents.
  • FIG. 1 shows a fiber scrubber 1 according to the invention Dewatering rollers 2, 3, the assigned feed 4.5 and their pulping screw 6.
  • the pulp suspension is through fabric feed lines 4.5 evenly over the length of the rollers 2,3 fed at the lowest position.
  • the supply can be between the 5 o'clock and 9 o'clock positions. This can be a much larger part of the circumference of the rollers 2, 3 can be used.
  • the suspension is further in the guide plates 7,8 with the surfaces of the rollers 2, 3 formed areas 7 ', 8', the Distance of the guide plates 7.8 to the surface of the rollers 2.3 continuously decreases. This will result in a steady increase in pressure and a favorable drainage guaranteed with simultaneous formation of a fiber mat.
  • the washing liquid is fed to the washing zones 9 ", 10" via lines 9, 10 supplied, which are limited by sheets 9 ', 10'.
  • the distance of the Sheets 9 ', 10' can face the surface of the rollers 2, 3 in the direction of rotation DR1, Decrease DR2 continuously, so that here too an increasingly higher one Pressure for displacement washing is realized.
  • scrapers 11, 12 In the lower part of the Rollers 2, 3 are then provided for scrapers 11, 12 through which the Fibrous mat and in particular those on the surfaces of the rollers 2, 3 residues still adhering can be removed and into the discharge screw 6 fall into it.
  • In the lower part of the Rollers 2, 3 are spray nozzles for further cleaning of the surfaces 15,16 arranged.
  • Fig. 2 shows an analogous representation to Fig. 1, with the same parts same reference numerals. Supplementary here are in particular the hydraulic cylinders 17, 18 for mutual contact pressure Rollers 2,3 recognizable. Furthermore, the cylinders 19, 20 are for lifting off the Upper parts 13, 14 and the setting cylinders 21, 22 for the take-off scraper 11.12 recognizable. Bars are also shown in the upper area 23.24 for the operating personnel.
  • FIG. 3 now shows a section X from FIG. 2, in which the drainage and washing function is shown in more detail.
  • Fig. 3 shows specifically the channels 25 of the rollers 2, 3 through which the filtrate and Wash water can be removed. It is good here against the direction of rotation DR1, DR2 arranged inlets 26 can be seen, the Filtrate or the wash water flow takes place according to the arrows 27. The liquid is then discharged axially from these channels 25. in the the lower left part shows the variant with additional openings 28, through the filtrate in the previous direction of rotation DR1, DR2 Channels can flow. As the filtrate is already in these channels was partially discharged, the volume of the channels 25 for the Absorption of filtrate or wash water from previous channels 25 used and thus further reduced the tendency to rewet become.
  • FIG. 4 now shows the view according to arrow IV in FIG. 2. From this it can be seen that that for better distribution of the suspension supply over the length the rollers 2, 3 and a plurality of stock feed lines 4, 4 'and corresponding can be provided on the back 5.5 '(not shown). Likewise The bearings 29, 30 are recognizable for the shaft ends 31, 32 of the Roller 2 and the gear 34. The filtrate is in a tub collected below the rollers.
  • the invention is not limited to the variants shown, but rather the washing zone can also be designed as a washing pond.
  • the Wash water is fed here centrally, which divides up both fiber mats are done automatically.
  • the roller jackets also consist of drilled perforated sheets and without screen covering operate.

Claims (10)

  1. Dispositif de déshydratation et de lavage de suspensions de pâtes fibreuse, ayant deux rouleaux à contre-rotation, une alimentation de pâte (4, 5) et une décharge de pâte (6), dans lequel la caisse de tête (4, 5) est séparée au niveau des rouleaux (2, 3), et une vis de décharge (6) est disposée pour la décharge de la nappe filtrée audessous de la fente entre les deux rouleaux (2, 3), caractérisé en ce que la caisse de tête (4, 5) est prévue dans la zone inférieure des rouleaux (2, 3), les axes des rouleaux (2, 3) se trouvant au plan horizontal, les rouleaux (2, 3) ayant des canaux (25) pour la décharge du filtrat et les canaux (25) ayant des entrées (26) disposées en sens inverse de rotation (DR1, DR2).
  2. Dispositif selon la revendication 1, caractérisé en ce qu'une plaque de guide (7, 8), dont la distance à la surface du rouleau diminue de façon constante, joint la caisse de tête (4, 5).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'une zone de lavage (9", 10") est disposée dans la zone supérieure des deux rouleaux (2, 3).
  4. Dispositif selon la revendication 3, caractérisé en ce que la zone de lavage (9", 10") est séparée par une plaque séparative (9', 10').
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que les canaux (25) ont des ouvertures supplémentaires (28) qui sont connectées au canal précédent (25) vu au sens de rotation (DR1, DR2).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que la surface des rouleaux est réalisée avec des tôles perforées à trous larges.
  7. Dispositif selon la revendication 6, caractérisé en ce que les trous de la tôle perforée ont un diamètre allant de 10 à 25 mm.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que les rouleaux sont individuellement habillés de toiles.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que des parties supérieures basculantes (13, 14) sont prévues.
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que les deux rouleaux (2, 3) peuvent être pressés l'un contre l'autre.
EP98928237A 1997-05-26 1998-05-09 Dispositif de deshydratation et de lavage de suspensions de matiere fibreuse Expired - Lifetime EP0985068B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0089097A AT405420B (de) 1997-05-26 1997-05-26 Vorrichtung zur entwässerung und wäsche von faserstoffsuspensionen
AT89097 1997-05-26
PCT/EP1998/002720 WO1998054401A1 (fr) 1997-05-26 1998-05-09 Dispositif de deshydratation et de lavage de suspensions de matiere fibreuse

Publications (2)

Publication Number Publication Date
EP0985068A1 EP0985068A1 (fr) 2000-03-15
EP0985068B1 true EP0985068B1 (fr) 2001-12-19

Family

ID=3502196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98928237A Expired - Lifetime EP0985068B1 (fr) 1997-05-26 1998-05-09 Dispositif de deshydratation et de lavage de suspensions de matiere fibreuse

Country Status (7)

Country Link
US (1) US6311849B1 (fr)
EP (1) EP0985068B1 (fr)
AT (1) AT405420B (fr)
AU (1) AU8016298A (fr)
CA (1) CA2290972C (fr)
DE (1) DE59802544D1 (fr)
WO (1) WO1998054401A1 (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9900835L (sv) 1999-03-09 2000-05-08 Kvaerner Pulping Tech Anordning för tvättning och avvattning av en fibermassasuspension.
SE516566C2 (sv) * 2000-05-05 2002-01-29 Metso Paper Inc Avvattningsanordning med avledningsyta för avpressad vätska
US7285180B2 (en) * 2004-04-19 2007-10-23 Gl&V Management Hungary Kft. Perforated deck made out of a plurality of segments
NZ562623A (en) * 2005-04-29 2011-02-25 Gtl Energy Ltd Method to transform bulk material
SE528867C2 (sv) * 2005-07-04 2007-03-06 Metso Paper Inc Valskropp för pressvals samt valspress innefattande två pressvalsar
SE530578C2 (sv) * 2006-11-23 2008-07-08 Metso Paper Inc Pressvals för tvättning och/eller avvattning av massa och förfarande för tillverkning eller reparation av sådan pressvals
US20080222947A1 (en) * 2007-03-13 2008-09-18 French Robert R Method To Improve The Efficiency Of Removal Of Liquid Water From Solid Bulk Fuel Materials
CA2686943C (fr) * 2007-05-25 2014-07-15 Metso Paper, Inc. Systeme de lavage et d'essorage de la pate a papier cellulosique
US8673030B2 (en) * 2007-08-01 2014-03-18 Gtl Energy Holdings Pty Limited Methods of producing water-resistant solid fuels
SE532437C2 (sv) * 2007-09-19 2010-01-19 Andritz Oy Avvattningstrumma för avvattning av cellulosamassa
SE531845E (sv) * 2007-12-13 2012-03-06 Metso Paper Inc Apparat för tvättning och avvattning av massa
SE532099C2 (sv) 2007-12-13 2009-10-20 Metso Paper Inc Appparat för tvättning och avvattning av massa, system för styrning av en sådan apparat, och förfarande för bearbetning av massa i en sådan apparat
SE531846E (sv) * 2007-12-13 2012-03-06 Metso Paper Inc Apparat för tvättning och avvattning av massa
SE531844E (sv) * 2007-12-13 2013-02-14 Metso Paper Inc Apparat för tvättning och avvattning av massa
SE0802072A2 (sv) * 2008-10-01 2010-07-20 Metso Paper Inc Tvättpress för tvättning av cellulosamassa
SE533686C2 (sv) * 2009-04-09 2010-12-07 Andritz Oy Press för avvattning av en suspension, samt sätt för rengöring av denna
SE533871C2 (sv) * 2009-05-29 2011-02-15 Metso Paper Inc Anordning för att förhindra återvätning av massan i en apparat för tvättning och/eller avvattning av massa
SE535686C2 (sv) * 2011-03-24 2012-11-06 Metso Paper Sweden Ab Anordning för reglering av ett pressnyp
SE536171C2 (sv) * 2011-10-12 2013-06-11 Metso Paper Sweden Ab Enhet för förhindrande av återvätning av cellulosamassa vid tvättning och/eller avvattning
SE537853C2 (sv) * 2013-05-07 2015-11-03 Valmet Oy Apparat för tvättning och/eller avvattning av massa med en insats för förhindrande av återvätning av massan
SE538068C2 (sv) * 2013-12-19 2016-02-23 Valmet Oy Arrangemang och förfarande för massaproduktion
US9803319B2 (en) 2014-12-19 2017-10-31 Andritz Inc. Press roll comb plate and related method
CN105887546A (zh) * 2016-04-06 2016-08-24 胡和萍 一种挤浆机的滤网导辊驱动装置
SE540916C2 (en) * 2016-09-15 2018-12-18 Valmet Oy An apparatus for washing and dewatering pulp, a system for controlling such an apparatus, and a method for processing pulp in such an apparatus
CN115042468B (zh) * 2022-07-12 2023-02-24 佛山市纬睿纺织实业有限公司 一种压迫取液的纺织用植物染料原料提取装置

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SE355990B (fr) * 1966-01-25 1973-05-14 Sunds Ab
SE318182B (fr) * 1968-04-23 1969-12-01 Karlstad Mekaniska Ab
SE380300C (sv) * 1974-03-04 1984-10-18 Sunds Ab Anordning for vetskebehandling av en fibersuspension
DE3463342D1 (en) * 1983-08-09 1987-06-04 Fujimoto Pollcon Co Double cylinder press for formation of fibrous layers
EP0140990A1 (fr) * 1983-11-08 1985-05-15 Braunschweigische Maschinenbauanstalt AG Appareil pour extraire des liquides de matériaux fibrés, feutrés, sous forme d'écheveaux
SE454187B (sv) * 1985-10-31 1988-04-11 Kamyr Ab Apparat for behandling av fibermaterial
WO1990010109A1 (fr) * 1989-02-23 1990-09-07 Beloit Corporation Appareil et procede de lavage de pate a papier
ES2140698T3 (es) * 1994-08-22 2000-03-01 Beloit Technologies Inc Rodillos prensadores que manejan mezclas de pastas papeleras y prensa que manejan mezclas de rodillo simple y de rodillos gemelos.
SE504011C2 (sv) * 1994-12-12 1996-10-21 Sunds Defibrator Ind Ab Avvattningsanordning

Also Published As

Publication number Publication date
AU8016298A (en) 1998-12-30
US6311849B1 (en) 2001-11-06
EP0985068A1 (fr) 2000-03-15
DE59802544D1 (de) 2002-01-31
CA2290972A1 (fr) 1998-12-03
WO1998054401A1 (fr) 1998-12-03
ATA89097A (de) 1998-12-15
CA2290972C (fr) 2006-12-12
AT405420B (de) 1999-08-25

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