EP1244840A4 - Blanchiment d'une pulpe a l'oxygene sous haute pression - Google Patents

Blanchiment d'une pulpe a l'oxygene sous haute pression

Info

Publication number
EP1244840A4
EP1244840A4 EP00938089A EP00938089A EP1244840A4 EP 1244840 A4 EP1244840 A4 EP 1244840A4 EP 00938089 A EP00938089 A EP 00938089A EP 00938089 A EP00938089 A EP 00938089A EP 1244840 A4 EP1244840 A4 EP 1244840A4
Authority
EP
European Patent Office
Prior art keywords
pressure
bleaching pulp
bleaching
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Withdrawn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
EP00938089A
Other languages
German (de)
English (en)
Other versions
EP1244840A1 (fr
Inventor
William D Vallance
D K Barde
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.)
LINCOLN PAPER & TISSUE, LLC
Original Assignee
Eastern Pulp and Paper Corp
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 Eastern Pulp and Paper Corp filed Critical Eastern Pulp and Paper Corp
Publication of EP1244840A1 publication Critical patent/EP1244840A1/fr
Publication of EP1244840A4 publication Critical patent/EP1244840A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
EP00938089A 1999-06-08 2000-06-02 Blanchiment d'une pulpe a l'oxygene sous haute pression Withdrawn EP1244840A4 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US13804399P 1999-06-08 1999-06-08
US138043P 1999-06-08
US51014000A 2000-02-22 2000-02-22
US510140 2000-02-22
PCT/US2000/015263 WO2000075420A1 (fr) 1999-06-08 2000-06-02 Blanchiment d'une pulpe a l'oxygene sous haute pression

Publications (2)

Publication Number Publication Date
EP1244840A1 EP1244840A1 (fr) 2002-10-02
EP1244840A4 true EP1244840A4 (fr) 2003-04-16

Family

ID=26835817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00938089A Withdrawn EP1244840A4 (fr) 1999-06-08 2000-06-02 Blanchiment d'une pulpe a l'oxygene sous haute pression

Country Status (4)

Country Link
EP (1) EP1244840A4 (fr)
AU (1) AU5317700A (fr)
CA (1) CA2376528A1 (fr)
WO (1) WO2000075420A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050051288A1 (en) * 2003-09-09 2005-03-10 Caifang Yin Extended retention and medium consistency pulp treatment
SE528726C2 (sv) * 2004-12-30 2007-01-30 Kvaerner Pulping Tech Syrgasdelignifiering av cellulosamassa i en högtrycksdel och en lågtrycksdel
FI122812B (fi) 2007-06-15 2012-07-13 Andritz Oy Menetelmä nestevirtojen käsittelemiseksi sellutehtaalla

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536577A (en) * 1963-07-12 1970-10-27 Hooker Chemical Corp Bleaching of cellulosic materials with chlorine dioxide
US3652385A (en) * 1969-05-13 1972-03-28 Mo Och Domsjoe Ab Process for treating cellulosic materials from which metal ions have been removed with alkali and oxygen in the presence of complex magnesium salts
US3725194A (en) * 1967-06-20 1973-04-03 South Africa Pulp And Paper In Treatment of alkaline pulp with an acidic medium followed by oxygen bleaching and delignification
US4507172A (en) * 1982-09-16 1985-03-26 St. Regis Paper Company Kraft pulping process
US5034094A (en) * 1987-11-06 1991-07-23 Kurple Kenneth R Method of converting inorganic materials from kraft pulping liquor into pulping chemicals without passing them through a recovery furnace
WO1991011554A1 (fr) * 1990-01-31 1991-08-08 Eka Nobel Ab Procede pour blanchir les materiaux lignocellulosiques
BE1005800A3 (fr) * 1992-05-22 1994-02-01 Solvay Interox Procede pour la delignification et le blanchiment d'une pate a papier chimique.
WO1996012063A1 (fr) * 1994-10-13 1996-04-25 Ahlstrom Machinery Oy Procede d'elimination de groupes d'acide hexenuronique dans de la pate de cellulose par traitement thermique
US5656130A (en) * 1995-04-28 1997-08-12 Union Camp Holding, Inc. Ambient temperature pulp bleaching with peroxyacid salts
EP0831170A2 (fr) * 1994-06-27 1998-03-25 Champion International Corporation Procédé amélioré de recyclage de filtrat d'usine de blanchiment
WO1998021400A1 (fr) * 1996-11-08 1998-05-22 Sunds Defibrator Industries Ab Preblanchiment de pate a papier realise avant l'etape de blanchiment au peroxyde
EP0899374A1 (fr) * 1997-09-01 1999-03-03 Oji Paper Co., Ltd. Procédé pour la préparation d'une pâte à papier blanchie

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536577A (en) * 1963-07-12 1970-10-27 Hooker Chemical Corp Bleaching of cellulosic materials with chlorine dioxide
US3725194A (en) * 1967-06-20 1973-04-03 South Africa Pulp And Paper In Treatment of alkaline pulp with an acidic medium followed by oxygen bleaching and delignification
US3652385A (en) * 1969-05-13 1972-03-28 Mo Och Domsjoe Ab Process for treating cellulosic materials from which metal ions have been removed with alkali and oxygen in the presence of complex magnesium salts
US4507172A (en) * 1982-09-16 1985-03-26 St. Regis Paper Company Kraft pulping process
US5034094A (en) * 1987-11-06 1991-07-23 Kurple Kenneth R Method of converting inorganic materials from kraft pulping liquor into pulping chemicals without passing them through a recovery furnace
WO1991011554A1 (fr) * 1990-01-31 1991-08-08 Eka Nobel Ab Procede pour blanchir les materiaux lignocellulosiques
BE1005800A3 (fr) * 1992-05-22 1994-02-01 Solvay Interox Procede pour la delignification et le blanchiment d'une pate a papier chimique.
EP0831170A2 (fr) * 1994-06-27 1998-03-25 Champion International Corporation Procédé amélioré de recyclage de filtrat d'usine de blanchiment
WO1996012063A1 (fr) * 1994-10-13 1996-04-25 Ahlstrom Machinery Oy Procede d'elimination de groupes d'acide hexenuronique dans de la pate de cellulose par traitement thermique
US5656130A (en) * 1995-04-28 1997-08-12 Union Camp Holding, Inc. Ambient temperature pulp bleaching with peroxyacid salts
WO1998021400A1 (fr) * 1996-11-08 1998-05-22 Sunds Defibrator Industries Ab Preblanchiment de pate a papier realise avant l'etape de blanchiment au peroxyde
EP0899374A1 (fr) * 1997-09-01 1999-03-03 Oji Paper Co., Ltd. Procédé pour la préparation d'une pâte à papier blanchie

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ROBITAILLE M A: "HYDROGEN PEROXIDE: A VERSATILE BLEACHING AGENT", PULP AND PAPER CANADA, ST LAURENT, CA, vol. 89, no. 12, 1988, pages 167 - 170, XP002930534 *
See also references of WO0075420A1 *

Also Published As

Publication number Publication date
WO2000075420A1 (fr) 2000-12-14
AU5317700A (en) 2000-12-28
CA2376528A1 (fr) 2000-12-14
EP1244840A1 (fr) 2002-10-02

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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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020108

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

RIC1 Information provided on ipc code assigned before grant

Free format text: 7D 21C 9/147 A, 7D 21C 9/10 B, 7D 21C 3/02 B

RIC1 Information provided on ipc code assigned before grant

Ipc: 7D 21C 9/147 A

Ipc: 7D 21C 9/10 B

Ipc: 7D 21C 3/02 B

Ipc: 7D 21C 9/14 B

A4 Supplementary search report drawn up and despatched

Effective date: 20030303

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: LINCOLN PAPER & TISSUE, LLC

17Q First examination report despatched

Effective date: 20050126

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20050809