DE68907593D1 - Verfahren zum bleichen von zellstoff. - Google Patents

Verfahren zum bleichen von zellstoff.

Info

Publication number
DE68907593D1
DE68907593D1 DE8989117233T DE68907593T DE68907593D1 DE 68907593 D1 DE68907593 D1 DE 68907593D1 DE 8989117233 T DE8989117233 T DE 8989117233T DE 68907593 T DE68907593 T DE 68907593T DE 68907593 D1 DE68907593 D1 DE 68907593D1
Authority
DE
Germany
Prior art keywords
bleaching
oxygen
pulp
enzyme treatment
chemical
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
DE8989117233T
Other languages
English (en)
Inventor
Marja Vaheri
Kari Miikki
Veikko Jokela
Kimmo Ruohoniemi
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.)
Stora Enso Oyj
Original Assignee
Enso Gutzeit Oy
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=8528357&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE68907593(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Enso Gutzeit Oy filed Critical Enso Gutzeit Oy
Application granted granted Critical
Publication of DE68907593D1 publication Critical patent/DE68907593D1/de
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
    • D21C9/12—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
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Paper (AREA)
  • Cereal-Derived Products (AREA)
  • Noodles (AREA)
  • Table Devices Or Equipment (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Hard Magnetic Materials (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
  • Detergent Compositions (AREA)
DE8989117233T 1989-05-04 1989-09-18 Verfahren zum bleichen von zellstoff. Expired - Lifetime DE68907593D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI892151A FI86896B (fi) 1989-05-04 1989-05-04 Foerfarande foer blekning av cellulosamassa.

Publications (1)

Publication Number Publication Date
DE68907593D1 true DE68907593D1 (de) 1993-08-19

Family

ID=8528357

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8989117233T Expired - Lifetime DE68907593D1 (de) 1989-05-04 1989-09-18 Verfahren zum bleichen von zellstoff.

Country Status (8)

Country Link
EP (1) EP0395792B1 (de)
JP (1) JPH02293486A (de)
AT (1) ATE91518T1 (de)
CA (1) CA1339593C (de)
DE (1) DE68907593D1 (de)
ES (1) ES2045320T3 (de)
FI (1) FI86896B (de)
NO (1) NO172355C (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2890362B2 (ja) * 1989-08-14 1999-05-10 ジェネンコア インターナショナル ヨーロッパ オイ パルプの酸素漂白の改良
SE465320B (sv) * 1990-01-10 1991-08-26 Korsnaes Ab Preparat som uppvisar enzymatisk delignifieringsaktivitet, saett att framstaella detsamma och tillaempningar daerav
US5837515A (en) * 1990-05-16 1998-11-17 Alko-Yhtiot Oy Enzyme preparations and methods for their production
JP2859393B2 (ja) * 1990-07-24 1999-02-17 ノボ ノルディスク アクティーゼルスカブ セルラーゼ及びその製造法
DE4129739A1 (de) * 1990-09-11 1992-03-12 Sandoz Ag Chlorfreies bleichen von papierpulpe
JPH04240287A (ja) * 1991-01-21 1992-08-27 Kobe Steel Ltd パルプの漂白方法
FI90670C (sv) * 1991-05-02 1994-03-10 Metsae Serla Oy Behandling av alkalibehandlad massa för användning i pappersframställning
FI108800B (fi) * 1991-05-07 2002-03-28 Iogen Corp Menetelmä ja laitteisto entsyymin käyttämiseksi paperimassan valmistuksessa ja valkaisussa
US5785811A (en) * 1992-11-09 1998-07-28 The Mead Corporation Process for treating lignocellulosic material with soybean peroxidase in the presence of peroxide
US7816129B2 (en) 1994-07-29 2010-10-19 Ab Enzymes Gmbh Production and secretion of proteins of bacterial origin in filamentous fungi
US5871730A (en) * 1994-07-29 1999-02-16 Universite De Sherbrooke Thermostable xylanase DNA, protein and methods of use
US6300114B1 (en) 1994-07-29 2001-10-09 Rohm Enzyme Finland Oy Sequences of xylanase and xylanase expression vectors
US5935836A (en) * 1994-07-29 1999-08-10 Rohm Enzyme Finland Oy Actinomadura xylanase sequences and methods of use
CA2301371C (en) * 1999-03-23 2009-09-01 Oji Paper Co., Ltd. Process for bleaching lignocellulose pulp
US6824646B2 (en) 1999-03-23 2004-11-30 Oji Paper Co., Ltd. Process for oxygen bleaching and enzyme treating lignocellulosic pulp with liquid treatment and recovery
US6942754B2 (en) 1999-03-23 2005-09-13 Oji Paper Co., Ltd. Process for producing xylooligosaccharide from lignocellulose pulp
AU2002226210A1 (en) 2000-12-22 2002-07-08 Iogen Bio-Products Corporation Alkaline extraction stages comprising xylanase
US9096519B2 (en) 2013-01-10 2015-08-04 California Institute Of Technology Process for the synthesis of ketones from internal alkenes
US9586883B2 (en) 2013-04-19 2017-03-07 California Institute Of Technology Aldehyde-selective wacker-type oxidation of unbiased alkenes
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5468402A (en) * 1977-11-09 1979-06-01 Kogyo Gijutsuin Property modification of biochemical pulp
FI81395B (fi) * 1988-03-14 1990-06-29 Cultor Oy Foerfarande foer blekning av cellulosamassa.
FI90888B (fi) * 1989-02-14 1993-12-31 Enso Gutzeit Oy Menetelmä selluloosamassan valkaisemiseksi

Also Published As

Publication number Publication date
FI892151A0 (fi) 1989-05-04
FI892151A (fi) 1990-11-05
NO172355C (no) 1993-07-07
ATE91518T1 (de) 1993-07-15
EP0395792A3 (de) 1991-01-16
NO172355B (no) 1993-03-29
FI86896B (fi) 1992-07-15
ES2045320T3 (es) 1994-01-16
NO893716D0 (no) 1989-09-18
JPH02293486A (ja) 1990-12-04
EP0395792A2 (de) 1990-11-07
NO893716L (no) 1990-11-05
CA1339593C (en) 1997-12-23
EP0395792B1 (de) 1993-07-14

Similar Documents

Publication Publication Date Title
DE68907593D1 (de) Verfahren zum bleichen von zellstoff.
DE68914135D1 (de) Verfahren zum Bleichen von Zellstoff.
ATE48290T1 (de) Verfahren zur delignifizierung und bleiche von zellstoffen.
DE69113444D1 (de) Verfahren zum bleichen von chemischem papierzellstoff.
DE68912322D1 (de) Verfahren zum Bleichen von Sulfatzellstoff.
DE69309938D1 (de) Methode zum behandeln von abwässern
DE69304342D1 (de) Verfahren zum bleichen von lignocellulose-enthaltendem zellstoff
ES2038954A6 (es) Metodo para blanquear pasta de papel.
NO970907L (no) Bleking av masse
NO950954L (no) Fremgangsmåte ved massebleking
DE3667184D1 (de) Verfahren zum bleichen von chemischen holzpulpen.
ATE35433T1 (de) Verfahren zur bereitstellung von chemischen holzpulpen hinsichtlich der bleiche.
NO984593L (no) FremgangsmÕte for bleking av kjemiske papirmasser

Legal Events

Date Code Title Description
8332 No legal effect for de