FI81395B - Foerfarande foer blekning av cellulosamassa. - Google Patents

Foerfarande foer blekning av cellulosamassa. Download PDF

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Publication number
FI81395B
FI81395B FI881192A FI881192A FI81395B FI 81395 B FI81395 B FI 81395B FI 881192 A FI881192 A FI 881192A FI 881192 A FI881192 A FI 881192A FI 81395 B FI81395 B FI 81395B
Authority
FI
Finland
Prior art keywords
pulp
enzyme
bleaching
bleached
chlorine
Prior art date
Application number
FI881192A
Other languages
English (en)
Finnish (fi)
Other versions
FI881192A0 (fi
FI881192A (fi
Inventor
Marja Vaheri
Mirja Salkinoja-Salonen
Marja Koljonen
Original Assignee
Cultor 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=8526077&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI81395(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cultor Oy filed Critical Cultor Oy
Priority to FI881192A priority Critical patent/FI81395B/fi
Publication of FI881192A0 publication Critical patent/FI881192A0/fi
Priority to NZ228308A priority patent/NZ228308A/xx
Priority to DE68925967T priority patent/DE68925967T2/de
Priority to AT89903748T priority patent/ATE135429T1/de
Priority to AU32923/89A priority patent/AU626846B2/en
Priority to CA000593523A priority patent/CA1334581C/en
Priority to PCT/FI1989/000045 priority patent/WO1989008738A1/en
Priority to EP89903748A priority patent/EP0407421B1/en
Priority to BR898907314A priority patent/BR8907314A/pt
Priority to JP1502856A priority patent/JPH03505758A/ja
Publication of FI881192A publication Critical patent/FI881192A/fi
Publication of FI81395B publication Critical patent/FI81395B/fi
Application granted granted Critical
Priority to DK199002119A priority patent/DK175185B1/da
Priority to NO903913A priority patent/NO174722C/no

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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Hard Magnetic Materials (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Detergent Compositions (AREA)

Claims (9)

1. Förfarande för att bleka cellulosamassa som erhälls frän lövträd, i vilket förfarande används en klorhaltig blekningskemikalie, kännetecknat av att rest-klorhalten hos den blekta massan reduceras genom att utföra en entsymbehandling för massan.
2. Förfarande enligt krav 1, kännetecknat av att massan behandlas med entsym före blekningsbehandlingen eller därefter.
3. Förfarande enligt krav 1 eller 2, kännetecknat av att entsymbehandlingen äger rum i ett temperaturomräde 10-90° C, företrädesvis 40-70° C, och i pH 3,0-7,5, företrädesvis 4,0-6,0.
4. Förfarande enligt nägot av föregäende krav, kännetecknat av att den använda entsymen är hemicellulas, cellulas, esteras eller deras blandning.
5. Förfarande enligt krav 2-4, kännetecknat av att tili en oblekt, genom björksulfatkokning ernädd massa tilläggs entsym, som lätes att inverka, varefter massan bleks medelst successiva oxidations- och extraktionsskeden genom att använda klorgas och/eller klordioxid säsom blek-ningskemikalier i oxidationsskeden och natriumhydroxid i extraktionsskeden.
6. Förfarande enligt krav 5, kännetecknat av att blekningen bestär av en femstegsklorblekning.
7. Bruk av entsym för att reducera restklorhalten hos blekt cellulosamassa av lövträd.
8. Bruk av hemicellulas, cellulas, esteras eller deras blanding enligt krav 7 för att reducera restklorhalten hos blekt cellulosamassa av lövträd. 12 81 395
9. Bruk av entsym enligt krav 7 eller 8 för att reducera restklorhalten hos blekt cellulosamassa, som skall raffineras till livsmedelspackningskartong eller -papper. il
FI881192A 1988-03-14 1988-03-14 Foerfarande foer blekning av cellulosamassa. FI81395B (fi)

Priority Applications (12)

Application Number Priority Date Filing Date Title
FI881192A FI81395B (fi) 1988-03-14 1988-03-14 Foerfarande foer blekning av cellulosamassa.
JP1502856A JPH03505758A (ja) 1988-03-14 1989-03-13 セルロースパルプを漂白するための方法
CA000593523A CA1334581C (en) 1988-03-14 1989-03-13 Procedure for bleaching cellulose pulp involving the use of combined enzyme treatment and a bleaching process employing chlorine chemicals
BR898907314A BR8907314A (pt) 1988-03-14 1989-03-13 Processo para branquear polpa de celulose e enzima usada no mesmo
AT89903748T ATE135429T1 (de) 1988-03-14 1989-03-13 Verfahren zur reduzierung von restchlor in laubholz-zellstoff
AU32923/89A AU626846B2 (en) 1988-03-14 1989-03-13 Bleaching cellulose pulp from hardwood using chlorine and enzymes
NZ228308A NZ228308A (en) 1988-03-14 1989-03-13 Alkaline bleaching of cellulose pulp
PCT/FI1989/000045 WO1989008738A1 (en) 1988-03-14 1989-03-13 Procedure for bleaching cellulose pulp
EP89903748A EP0407421B1 (en) 1988-03-14 1989-03-13 A method for reducing residual chlorine content in hardwood pulp
DE68925967T DE68925967T2 (de) 1988-03-14 1989-03-13 Verfahren zur reduzierung von restchlor in laubholz-zellstoff
DK199002119A DK175185B1 (da) 1988-03-14 1990-09-04 Fremgangsmåde til blegning af cellulosemasse og anvendelse af enzymer
NO903913A NO174722C (no) 1988-03-14 1990-09-07 Fremgangsmåte for bleking av cellulosemasse og anvendelse av enzymer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI881192 1988-03-14
FI881192A FI81395B (fi) 1988-03-14 1988-03-14 Foerfarande foer blekning av cellulosamassa.

Publications (3)

Publication Number Publication Date
FI881192A0 FI881192A0 (fi) 1988-03-14
FI881192A FI881192A (fi) 1989-09-15
FI81395B true FI81395B (fi) 1990-06-29

Family

ID=8526077

Family Applications (1)

Application Number Title Priority Date Filing Date
FI881192A FI81395B (fi) 1988-03-14 1988-03-14 Foerfarande foer blekning av cellulosamassa.

Country Status (12)

Country Link
EP (1) EP0407421B1 (sv)
JP (1) JPH03505758A (sv)
AT (1) ATE135429T1 (sv)
AU (1) AU626846B2 (sv)
BR (1) BR8907314A (sv)
CA (1) CA1334581C (sv)
DE (1) DE68925967T2 (sv)
DK (1) DK175185B1 (sv)
FI (1) FI81395B (sv)
NO (1) NO174722C (sv)
NZ (1) NZ228308A (sv)
WO (1) WO1989008738A1 (sv)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5298405A (en) * 1986-04-30 1994-03-29 Alko Limited Enzyme preparations with recombinantly-altered cellulose profiles and methods for their production
FI90888B (sv) * 1989-02-14 1993-12-31 Enso Gutzeit Oy Förfarande för blekning av cellulosamassa
FI86896B (fi) * 1989-05-04 1992-07-15 Enso Gutzeit Oy Foerfarande foer blekning av cellulosamassa.
DK420289D0 (da) * 1989-08-25 1989-08-25 Novo Nordisk As Fremgangsmaade til behandling af lignocellulosepulp
NZ235679A (en) * 1989-10-18 1993-01-27 Int Paper Co Bleaching lignocellulosic pulp using (a) treatment with xylanase and (b) one or more chemical bleaching stages
SE465320B (sv) * 1990-01-10 1991-08-26 Korsnaes Ab Preparat som uppvisar enzymatisk delignifieringsaktivitet, saett att framstaella detsamma och tillaempningar daerav
FI88315C (sv) * 1990-04-04 1993-04-26 Enso Gutzeit Oy Förfarande för blekning av cellulosamassa
US5837515A (en) * 1990-05-16 1998-11-17 Alko-Yhtiot Oy Enzyme preparations and methods for their production
GB9018426D0 (en) * 1990-08-22 1990-10-03 Sandoz Ltd Improvements in or relating to novel compounds
NZ239500A (en) * 1990-08-24 1993-08-26 Novo Nordisk As Xylanases obtained from bacillus pumilus and use in a lignocellulosic chemical pulping process
DE4129739A1 (de) * 1990-09-11 1992-03-12 Sandoz Ag Chlorfreies bleichen von papierpulpe
FI108800B (sv) * 1991-05-07 2002-03-28 Iogen Corp Förfarande och anordning för användning av enzymer vid framställning och blekning av pappersmassa
US5498534A (en) * 1992-03-25 1996-03-12 The United States Of America As Represented By The Secretary Of Agriculture Method of removing color from wood pulp using xylanase from streptomyces roseiscleroticus NRRL B-11019
US5369024A (en) * 1992-03-25 1994-11-29 The United States Of America As Represented By The Secretary Of Agriculture Xylanase from streptomyces roseiscleroticus NRRL-11019 for removing color from kraft wood pulps
US5935836A (en) * 1994-07-29 1999-08-10 Rohm Enzyme Finland Oy Actinomadura xylanase sequences and methods of use
US5871730A (en) * 1994-07-29 1999-02-16 Universite De Sherbrooke Thermostable xylanase DNA, protein and methods of use
US7816129B2 (en) 1994-07-29 2010-10-19 Ab Enzymes Gmbh Production and secretion of proteins of bacterial origin in filamentous fungi
US6300114B1 (en) 1994-07-29 2001-10-09 Rohm Enzyme Finland Oy Sequences of xylanase and xylanase expression vectors
AU2002229430A1 (en) 2001-01-18 2002-07-30 Iogen Bio-Products Corporation Use of xylanase in pulp bleaching
US7368036B2 (en) 2002-03-06 2008-05-06 Iogen Bio-Products Corporation Xylanase treatment of chemical pulp
CN104963206A (zh) * 2014-12-11 2015-10-07 华东理工常熟研究院有限公司 酶改性纸浆纤维、木塑复合材料及其制备方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ216726A (en) * 1985-07-15 1990-08-28 Repligen Corp Use of lignin-degrading enzymes from phanerochaete chrysosporium for treatment of wood pulp and e1 effluent
ZA894239B (en) * 1988-06-08 1990-03-28 Int Paper Co Enzymatic delignification of lignocellulosic material
DE68914112T2 (de) * 1988-11-23 1994-08-04 Sandoz Ag Benutzung von Enzymen von Aureobasidium Pullulans für das Bleichen von Zellstoff.

Also Published As

Publication number Publication date
NO903913L (no) 1990-09-07
DK211990A (da) 1990-11-07
DE68925967D1 (de) 1996-04-18
NZ228308A (en) 1990-06-26
FI881192A0 (fi) 1988-03-14
ATE135429T1 (de) 1996-03-15
AU626846B2 (en) 1992-08-13
FI881192A (fi) 1989-09-15
CA1334581C (en) 1995-02-28
JPH03505758A (ja) 1991-12-12
EP0407421A1 (en) 1991-01-16
NO903913D0 (no) 1990-09-07
NO174722C (no) 1994-06-22
DK211990D0 (da) 1990-09-04
DE68925967T2 (de) 1996-09-12
WO1989008738A1 (en) 1989-09-21
AU3292389A (en) 1989-10-05
BR8907314A (pt) 1991-03-19
DK175185B1 (da) 2004-06-28
EP0407421B1 (en) 1996-03-13
NO174722B (no) 1994-03-14

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