CA2067296A1 - Process for bleaching of lignocellulose-containing pulp - Google Patents

Process for bleaching of lignocellulose-containing pulp

Info

Publication number
CA2067296A1
CA2067296A1 CA2067296A CA2067296A CA2067296A1 CA 2067296 A1 CA2067296 A1 CA 2067296A1 CA 2067296 A CA2067296 A CA 2067296A CA 2067296 A CA2067296 A CA 2067296A CA 2067296 A1 CA2067296 A1 CA 2067296A1
Authority
CA
Canada
Prior art keywords
pulp
chlorine
bleaching agent
lignocellulose
free bleaching
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.)
Granted
Application number
CA2067296A
Other languages
French (fr)
Other versions
CA2067296C (en
Inventor
Lennart Andersson
Jiri Basta
Lillemor Holtinger
Jan Hook
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.)
Nouryon Pulp and Performance Chemicals AB
Original Assignee
Lennart Andersson
Jiri Basta
Lillemor Holtinger
Jan Hook
Eka Nobel 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20382601&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2067296(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Lennart Andersson, Jiri Basta, Lillemor Holtinger, Jan Hook, Eka Nobel Ab filed Critical Lennart Andersson
Priority to CA002139246A priority Critical patent/CA2139246A1/en
Publication of CA2067296A1 publication Critical patent/CA2067296A1/en
Application granted granted Critical
Publication of CA2067296C publication Critical patent/CA2067296C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • 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
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Abstract

The present invention relates to a process for delignification and bleaching of chemically digested lignocellulose-containing pulp, wherein the pulp is acid treated at a pH of between about 1 and about 6, whereupon a water-soluble mixture of a magnesium compound and a calcium compound is added at a pH of between about 1 and about 7 before the pulp is treated with a chlorine-free bleaching agent. The chlorine-free bleaching agent includes hydrogen peroxide. After the treatment according to the invention, the pulp may be finally bleached to the desired brightness, suitably with a chlorine-free bleaching agent, such as ozone, to completely avoid formation and discharge of AOX.
CA002067296A 1991-04-30 1992-04-27 Process for bleaching of lignocellulose-containing pulp Expired - Fee Related CA2067296C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002139246A CA2139246A1 (en) 1991-04-30 1992-04-27 Process for bleaching of lignocellulose-containing pulp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9101301-1 1991-04-30
SE9101301A SE470065C (en) 1991-04-30 1991-04-30 Treatment of chemical pulp with an acid and then a magnesium and calcium compound in chlorine-free bleaching

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002139246A Division CA2139246A1 (en) 1991-04-30 1992-04-27 Process for bleaching of lignocellulose-containing pulp

Publications (2)

Publication Number Publication Date
CA2067296A1 true CA2067296A1 (en) 1992-10-31
CA2067296C CA2067296C (en) 1997-03-04

Family

ID=20382601

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002067296A Expired - Fee Related CA2067296C (en) 1991-04-30 1992-04-27 Process for bleaching of lignocellulose-containing pulp

Country Status (14)

Country Link
EP (2) EP0679760B1 (en)
JP (1) JP2592747B2 (en)
AT (2) ATE141971T1 (en)
BR (1) BR9201554A (en)
CA (1) CA2067296C (en)
DE (2) DE69213080D1 (en)
ES (1) ES2091395T3 (en)
FI (1) FI111964B (en)
MX (1) MX9201966A (en)
NO (1) NO180495C (en)
NZ (1) NZ242465A (en)
RU (1) RU2039141C1 (en)
SE (1) SE470065C (en)
ZA (1) ZA923073B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1075143C (en) * 1994-10-13 2001-11-21 安德里兹－阿尔斯特罗姆公司 Method for removal of hexenuronic acid groups in cellulose pulp by heat treatment
US6776876B1 (en) 1994-10-13 2004-08-17 Andritz Oy Method of treating cellulosic pulp to remove hexenuronic acid

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI89516B (en) 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande Foer blekning av cellulosamassa med Otson
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
SE500353C2 (en) * 1992-10-26 1994-06-06 Sca Wifsta Oestrand Ab Peroxide bleaching of sulfate pulp with the addition of magnesium before bleaching
SE512137C2 (en) * 1992-10-29 2000-01-31 Eka Chemicals Ab Process for bleaching lignocellulosic pulp
SE9203366L (en) * 1992-11-11 1994-05-12 Mo Och Domsjoe Ab Process for delignification and / or bleaching of cellulose pulp
US6007678A (en) * 1992-11-27 1999-12-28 Eka Nobel Ab Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof
DE69420306T2 (en) * 1993-04-20 2000-04-20 Eka Chemicals Ab Bohus Process for bleaching lignocellulosic pulp
SE9301960L (en) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Bleaching of chemical pulp with peroxide at overpressure
US6605181B1 (en) * 1993-10-01 2003-08-12 Kvaerner Pulping Aktiebolag Peroxide bleach sequence including an acidic bleach stage and including a wash stage
BE1007757A3 (en) * 1993-11-10 1995-10-17 Solvay Interox Method of laundering of chemical pulp.
DE19516151A1 (en) 1995-05-03 1996-11-07 Sven Siegle Process for the production of a pulp from cellulosic material, the pulp itself and its use
FI105701B (en) 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Method and arrangement for treatment of pulp
JPH108092A (en) * 1996-06-21 1998-01-13 Mitsubishi Paper Mills Ltd Stabilizer for peroxide bleaching treatment and bleaching of fibrous substance with the same
BE1010679A3 (en) * 1996-10-11 1998-11-03 Solvay Interox Delignification process and laundering pulp chemicals.
ID23571A (en) * 1997-08-25 2000-05-04 Praxair Technology Inc METHOD OF OZONE APPLICATION IN ECF BLEACHING
JP2002266272A (en) * 2001-03-12 2002-09-18 Nippon Paper Industries Co Ltd Method for bleaching cellulosic fibrous material pulp
US6743332B2 (en) * 2001-05-16 2004-06-01 Weyerhaeuser Company High temperature peroxide bleaching of mechanical pulps
KR100547491B1 (en) * 2005-04-27 2006-01-31 이권혁 The production method and pulp maked bamboos
US9511167B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Modified cellulose from chemical kraft fiber and methods of making and using the same
US9512237B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Method for inhibiting the growth of microbes with a modified cellulose fiber
US9512563B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Surface treated modified cellulose from chemical kraft fiber and methods of making and using same
CN102459754B (en) 2009-05-28 2015-04-29 Gp纤维素股份有限公司 Modified cellulose from chemical kraft fiber and methods of making and using same
EP2714987B1 (en) 2011-05-23 2015-07-29 GP Cellulose GmbH Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same
BR112014017164A8 (en) 2012-01-12 2017-07-04 Gp Cellulose Gmbh method for producing oxidized kraft pulp and softwood kraft fibers
MX364847B (en) 2012-04-18 2019-05-08 Gp Cellulose Gmbh The use of surfactant to treat pulp and improve the incorporation of kraft pulp into fiber for the production of viscose and other secondary fiber products.
US9115468B2 (en) * 2012-09-27 2015-08-25 Andritz Inc. Chemical treatment of lignocellulosic fiber bundle material, and methods and systems relating thereto
AU2014213691B2 (en) 2013-02-08 2017-03-16 Gp Cellulose Gmbh Softwood kraft fiber having an improved a-cellulose content and its use in the production of chemical cellulose products
CA2901665A1 (en) 2013-03-14 2014-09-18 Gp Cellulose Gmbh A method of making highly functional, low viscosity kraft fiber using an acidic bleaching sequence and a fiber made by the process
CN108049234B (en) 2013-03-15 2020-12-08 Gp 纤维素股份有限公司 Chemically modified kraft fiber
US20180155871A1 (en) * 2015-09-30 2018-06-07 Imerys Minerals Limited Methods for bleaching aqueous pulps and compositions for use in these methods
CA3040734A1 (en) 2016-11-16 2018-05-24 Gp Cellulose Gmbh Modified cellulose from chemical fiber and methods of making and using the same
WO2021209586A1 (en) * 2020-04-16 2021-10-21 Bim Kemi Ab Delignification process

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3507744A (en) * 1966-04-01 1970-04-21 Kimberly Clark Co Wood pulp bleaching process utilizing peroxide pyrophosphate high concentration compositions
SE335053B (en) * 1969-05-13 1971-05-10 Mo Och Domsjoe Ab
DE2742262C2 (en) * 1977-09-20 1982-06-09 Degussa Ag, 6000 Frankfurt Process for the production of a medium to high viscosity softwood sulphite pulp
FR2520397A1 (en) * 1982-01-28 1983-07-29 Centre Tech Ind Papier PROCESS FOR TREATING CHEMICAL PAPER PASTES
FR2557605B1 (en) * 1983-12-29 1987-12-11 Atochem PROCESS FOR BLEACHING PAPER PULP BY HYDROGEN PEROXIDE
JPH0364589A (en) * 1989-07-28 1991-03-19 Mitsubishi Gas Chem Co Inc Bleaching of chemical pulp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1075143C (en) * 1994-10-13 2001-11-21 安德里兹－阿尔斯特罗姆公司 Method for removal of hexenuronic acid groups in cellulose pulp by heat treatment
US6776876B1 (en) 1994-10-13 2004-08-17 Andritz Oy Method of treating cellulosic pulp to remove hexenuronic acid

Also Published As

Publication number Publication date
SE470065B (en) 1993-11-01
EP0511695B1 (en) 1996-08-28
EP0511695A1 (en) 1992-11-04
AU1514992A (en) 1993-03-11
BR9201554A (en) 1992-12-01
AU651192B2 (en) 1994-07-14
ATE173518T1 (en) 1998-12-15
NZ242465A (en) 1993-12-23
FI111964B (en) 2003-10-15
RU2039141C1 (en) 1995-07-09
EP0511695B2 (en) 2004-06-02
DE69227640D1 (en) 1998-12-24
NO921671D0 (en) 1992-04-29
NO180495C (en) 2003-06-06
SE470065C (en) 1995-10-12
SE9101301D0 (en) 1991-04-30
SE9101301L (en) 1992-10-31
FI921886A0 (en) 1992-04-27
CA2067296C (en) 1997-03-04
ES2091395T3 (en) 1996-11-01
EP0679760B1 (en) 1998-11-18
JP2592747B2 (en) 1997-03-19
ATE141971T1 (en) 1996-09-15
NO180495B (en) 1997-01-20
EP0679760A1 (en) 1995-11-02
MX9201966A (en) 1992-11-01
FI921886A (en) 1992-10-31
JPH05148784A (en) 1993-06-15
DE69213080D1 (en) 1996-10-02
NO921671L (en) 1992-11-02
ZA923073B (en) 1992-12-30
DE69227640T2 (en) 1999-05-06

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