EP2766523A4 - Dispositif destiné à empêcher le retrempage d'une pâte de cellulose - Google Patents

Dispositif destiné à empêcher le retrempage d'une pâte de cellulose

Info

Publication number
EP2766523A4
EP2766523A4 EP12839805.4A EP12839805A EP2766523A4 EP 2766523 A4 EP2766523 A4 EP 2766523A4 EP 12839805 A EP12839805 A EP 12839805A EP 2766523 A4 EP2766523 A4 EP 2766523A4
Authority
EP
European Patent Office
Prior art keywords
cellulose pulp
preventing rewetting
rewetting
preventing
pulp
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Withdrawn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
EP12839805.4A
Other languages
German (de)
English (en)
Other versions
EP2766523A1 (fr
Inventor
Jörgen Lundberg
Hans Lövgren
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.)
Valmet AB
Original Assignee
Valmet AB
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 Valmet AB filed Critical Valmet AB
Publication of EP2766523A1 publication Critical patent/EP2766523A1/fr
Publication of EP2766523A4 publication Critical patent/EP2766523A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements
    • 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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
EP12839805.4A 2011-10-12 2012-10-11 Dispositif destiné à empêcher le retrempage d'une pâte de cellulose Withdrawn EP2766523A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1150946A SE536171C2 (sv) 2011-10-12 2011-10-12 Enhet för förhindrande av återvätning av cellulosamassa vid tvättning och/eller avvattning
PCT/SE2012/051089 WO2013055284A1 (fr) 2011-10-12 2012-10-11 Dispositif destiné à empêcher le retrempage d'une pâte de cellulose

Publications (2)

Publication Number Publication Date
EP2766523A1 EP2766523A1 (fr) 2014-08-20
EP2766523A4 true EP2766523A4 (fr) 2015-07-01

Family

ID=48082171

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12839805.4A Withdrawn EP2766523A4 (fr) 2011-10-12 2012-10-11 Dispositif destiné à empêcher le retrempage d'une pâte de cellulose

Country Status (5)

Country Link
EP (1) EP2766523A4 (fr)
CN (1) CN103987892A (fr)
CA (1) CA2851609A1 (fr)
SE (1) SE536171C2 (fr)
WO (1) WO2013055284A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US9803319B2 (en) * 2014-12-19 2017-10-31 Andritz Inc. Press roll comb plate and related method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370231A (en) * 1981-09-04 1983-01-25 Lavalley Industrial Plastics, Inc. Rotary drum filter
US4581139A (en) * 1983-10-06 1986-04-08 Dorr-Oliver Incorporated Filtrate run-back baffle for rotary drum vacuum filter
WO2008140396A1 (fr) * 2007-05-15 2008-11-20 Metso Paper, Inc. Appareil et procédé de blanchiment de pâte dans un tambour rotatif
WO2010101518A1 (fr) * 2009-03-04 2010-09-10 Metso Paper, Inc. Dispositif situé dans une presse de lavage pour empêcher une réhumidification

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663040A (en) * 1985-11-22 1987-05-05 Elizondo H J Rotary drum filter grid extension and method
US4906364A (en) * 1988-12-29 1990-03-06 Ingersoll-Rand Company Filter deck assembly sliding seal
US5244572A (en) * 1991-12-06 1993-09-14 Lavalley Industries, Inc. Rotary drum filter with improved deck structure
US5470471A (en) * 1993-05-14 1995-11-28 Ingersoll-Rand Company Anti-rewet deck for press rolls
AT405420B (de) * 1997-05-26 1999-08-25 Andritz Patentverwaltung Vorrichtung zur entwässerung und wäsche von faserstoffsuspensionen
SE528867C2 (sv) * 2005-07-04 2007-03-06 Metso Paper Inc Valskropp för pressvals samt valspress innefattande två pressvalsar
EP2152959B1 (fr) * 2007-05-25 2015-07-22 Valmet Technologies, Inc. Ensemble de lavage et d'essorage pour pâte à papier cellulosique
SE534655C2 (sv) * 2009-12-15 2011-11-08 Metso Paper Inc Trumma för bearbetning av cellulosamassa, apparat innefattande trumman samt förfarande för framställning av trumman

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370231A (en) * 1981-09-04 1983-01-25 Lavalley Industrial Plastics, Inc. Rotary drum filter
US4581139A (en) * 1983-10-06 1986-04-08 Dorr-Oliver Incorporated Filtrate run-back baffle for rotary drum vacuum filter
WO2008140396A1 (fr) * 2007-05-15 2008-11-20 Metso Paper, Inc. Appareil et procédé de blanchiment de pâte dans un tambour rotatif
WO2010101518A1 (fr) * 2009-03-04 2010-09-10 Metso Paper, Inc. Dispositif situé dans une presse de lavage pour empêcher une réhumidification

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2013055284A1 *

Also Published As

Publication number Publication date
CA2851609A1 (fr) 2013-04-18
EP2766523A1 (fr) 2014-08-20
SE1150946A1 (sv) 2013-04-13
CN103987892A (zh) 2014-08-13
WO2013055284A1 (fr) 2013-04-18
SE536171C2 (sv) 2013-06-11

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 20140512

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Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
RA4 Supplementary search report drawn up and despatched (corrected)

Effective date: 20150529

RIC1 Information provided on ipc code assigned before grant

Ipc: D21C 9/18 20060101AFI20150522BHEP

Ipc: B30B 9/20 20060101ALI20150522BHEP

Ipc: D21D 1/40 20060101ALI20150522BHEP

Ipc: B01D 33/067 20060101ALI20150522BHEP

Ipc: D21C 9/06 20060101ALI20150522BHEP

STAA Information on the status of an ep patent application or granted ep patent

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Effective date: 20160105