CA2031848C - Method of bleaching pulp - Google Patents

Method of bleaching pulp

Info

Publication number
CA2031848C
CA2031848C CA002031848A CA2031848A CA2031848C CA 2031848 C CA2031848 C CA 2031848C CA 002031848 A CA002031848 A CA 002031848A CA 2031848 A CA2031848 A CA 2031848A CA 2031848 C CA2031848 C CA 2031848C
Authority
CA
Canada
Prior art keywords
ozone
chlorine dioxide
recited
added
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.)
Expired - Lifetime
Application number
CA002031848A
Other languages
English (en)
French (fr)
Other versions
CA2031848A1 (en
Inventor
Charlotte Bosenius
Erik Nilsson
Petter Tibbling
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.)
Metso Fiber Karlstad AB
Original Assignee
Kamyr 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 Kamyr AB filed Critical Kamyr AB
Publication of CA2031848A1 publication Critical patent/CA2031848A1/en
Application granted granted Critical
Publication of CA2031848C publication Critical patent/CA2031848C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA002031848A 1989-12-29 1990-12-10 Method of bleaching pulp Expired - Lifetime CA2031848C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8904403A SE467260B (sv) 1989-12-29 1989-12-29 Blekning av cellulosamassa med klordioxid och ozon i ett och samma steg
SE8904403-6 1989-12-29

Publications (2)

Publication Number Publication Date
CA2031848A1 CA2031848A1 (en) 1991-06-30
CA2031848C true CA2031848C (en) 1995-11-21

Family

ID=20377904

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002031848A Expired - Lifetime CA2031848C (en) 1989-12-29 1990-12-10 Method of bleaching pulp

Country Status (9)

Country Link
JP (1) JPH04289288A (sv)
AT (1) AT396129B (sv)
BR (1) BR9006578A (sv)
CA (1) CA2031848C (sv)
DE (1) DE4039099C2 (sv)
FI (1) FI95291C (sv)
FR (1) FR2656634B1 (sv)
NO (1) NO176061C (sv)
SE (1) SE467260B (sv)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5322598A (en) * 1990-02-06 1994-06-21 Olin Corporation Chlorine dioxide generation using inert load of sodium perchlorate
FI925558A (fi) * 1992-04-22 1993-10-23 Ahlstroem Oy Foerfarande och anordning foer blekning av massa
US5387317A (en) * 1993-01-28 1995-02-07 The Mead Corporation Oxygen/ozone/peracetic aicd delignification and bleaching of cellulosic pulps
WO1997006304A1 (fr) * 1995-08-10 1997-02-20 Sanyo Chemical Industries, Ltd. Procede permettant de blanchir de la pate de cellulose
FR2743094B1 (fr) * 1995-12-27 1998-02-13 Centre Tech Ind Papier Procede de blanchiment des pates a papier chimiques
ID23571A (id) * 1997-08-25 2000-05-04 Praxair Technology Inc Metoda penerapan ozon dalam pemutihan ecf
US6174409B1 (en) 1997-09-19 2001-01-16 American Air Liquide Inc. Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process
AU8642698A (en) * 1998-07-31 2000-02-28 Asia Pulp & Paper Co Ltd An improved method for bleaching pulp
JP2002069879A (ja) * 2000-09-04 2002-03-08 Nippon Paper Industries Co Ltd セルロース質繊維材料のパルプの漂白方法
SE532470C2 (sv) * 2008-05-13 2010-02-02 Metso Paper Inc Slutblekning av oxygendelignifierad massa med ozon, klordioxid och peroxid
JP5987223B2 (ja) * 2012-03-06 2016-09-07 愛媛県 セルロース溶液の製造方法、セルロースの製造方法、セルロースの糖化方法
CN111979818A (zh) * 2020-08-07 2020-11-24 齐鲁工业大学 一种硫酸盐木浆短程序ecf漂白工艺x/z/d-eop-d或x/d/z-eop-d
CN111979823A (zh) * 2020-08-07 2020-11-24 齐鲁工业大学 一种硫酸盐木浆短程序ecf漂白工艺x/d-z-p（x/z-d-p）

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1298875B (de) * 1965-01-09 1969-07-03 Gunnar Alexander Dipl Ing Verfahren zum Bleichen von Zellstoff im chlorhaltigen Bleichbad und mit Ozon
US4080249A (en) * 1976-06-02 1978-03-21 International Paper Company Delignification and bleaching of a lignocellulosic pulp slurry with ozone
US4902381A (en) * 1988-12-09 1990-02-20 Kamyr, Inc. Method of bleaching pulp with ozone-chlorine mixtures
US4959124A (en) * 1989-05-05 1990-09-25 International Paper Company Method of bleaching kraft pulp in a DZED sequence
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson

Also Published As

Publication number Publication date
AT396129B (de) 1993-06-25
FR2656634B1 (fr) 1996-07-26
FI906400A0 (sv) 1990-12-27
DE4039099C2 (de) 1994-01-27
SE467260B (sv) 1992-06-22
NO176061C (no) 1995-01-25
ATA251990A (de) 1992-10-15
FI906400A (sv) 1991-06-30
SE8904403L (sv) 1991-06-30
NO905599L (no) 1991-07-01
FR2656634A1 (fr) 1991-07-05
CA2031848A1 (en) 1991-06-30
JPH04289288A (ja) 1992-10-14
DE4039099A1 (de) 1991-07-04
SE8904403D0 (sv) 1989-12-29
FI95291C (sv) 1996-01-10
BR9006578A (pt) 1991-10-01
FI95291B (sv) 1995-09-29
NO905599D0 (no) 1990-12-27
NO176061B (no) 1994-10-17

Similar Documents

Publication Publication Date Title
AU664453B2 (en) A process for bleaching pulp without using chlorine-containing chemicals
FI111964B (sv) Förfarande för blekning av lignocellulosahaltig massa
CA2031848C (en) Method of bleaching pulp
US6010594A (en) Method of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stage
FI63793B (fi) Alkalipressning av cellulosamassa
CA2157109C (en) Method of bleaching pulp with chlorine-free chemicals
US6605181B1 (en) Peroxide bleach sequence including an acidic bleach stage and including a wash stage
CA2031850C (en) Method of bleaching pulp
AU2003216028B2 (en) Process for bleaching lignocellulose-containing non-wood pulp
US5645687A (en) Process for manufacturing bleached pulp with reduced chloride production
USH1690H (en) Process for bleaching kraft pulp
JPH0726350B2 (ja) パルプの高脱リグニン選択性を得る方法
WO1994029512A1 (en) Method of bleaching pulp without using chlorine chemicals
KR100194405B1 (ko) 목재펄프의 무염소 표백방법
US20090242152A1 (en) Bleaching process of chemical pulp
WO1996005364A1 (en) Bleaching of chemical paper pulp under sulphonating conditions
WO2000008251A1 (en) An improved method for bleaching pulp
EP0717800A1 (en) Medium consistency ozone brightening of high consistency ozone bleached pulp
US5766414A (en) Method of bleaching cellulose pulp with peroxide under elevated pressure in a first vessel and atmospheric pressure in second vessel
SK281290B6 (sk) Spôsob bielenia buničiny bez použitia chlóru

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202