CA2090338A1 - Process for treatment of lignocellulosic pulp and apparatus for performance of the process - Google Patents

Process for treatment of lignocellulosic pulp and apparatus for performance of the process

Info

Publication number
CA2090338A1
CA2090338A1 CA002090338A CA2090338A CA2090338A1 CA 2090338 A1 CA2090338 A1 CA 2090338A1 CA 002090338 A CA002090338 A CA 002090338A CA 2090338 A CA2090338 A CA 2090338A CA 2090338 A1 CA2090338 A1 CA 2090338A1
Authority
CA
Canada
Prior art keywords
washing
treatment
enzyme
pulp
stock
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.)
Abandoned
Application number
CA002090338A
Other languages
English (en)
French (fr)
Inventor
Lars S. Pedersen
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.)
Novo Nordisk AS
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2090338A1 publication Critical patent/CA2090338A1/en
Abandoned 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
    • 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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
CA002090338A 1990-08-24 1991-08-21 Process for treatment of lignocellulosic pulp and apparatus for performance of the process Abandoned CA2090338A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK2034/90 1990-08-24
DK203490A DK203490D0 (da) 1990-08-24 1990-08-24 Fremgangsmaade til behandling af lignocellulosepulp og apparat til udfoerelse af processen
PCT/DK1991/000239 WO1992003608A1 (en) 1990-08-24 1991-08-21 Process for treatment of lignocellulosic pulp and apparatus for performance of the process

Publications (1)

Publication Number Publication Date
CA2090338A1 true CA2090338A1 (en) 1992-02-25

Family

ID=8109613

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002090338A Abandoned CA2090338A1 (en) 1990-08-24 1991-08-21 Process for treatment of lignocellulosic pulp and apparatus for performance of the process

Country Status (11)

Country Link
EP (1) EP0547100B1 (de)
JP (1) JPH05509137A (de)
AT (1) ATE118842T1 (de)
BR (1) BR9106763A (de)
CA (1) CA2090338A1 (de)
DE (1) DE69107620D1 (de)
DK (1) DK203490D0 (de)
ES (1) ES2069307T3 (de)
FI (1) FI930803A0 (de)
NZ (1) NZ239501A (de)
WO (1) WO1992003608A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA03011194A (es) 2001-06-06 2004-02-26 Novozymes As Endo-beta-1,4-glucanasa.
CN101967490B (zh) 2002-06-14 2014-07-16 先正达公司 木聚糖酶、编码木聚糖酶的核酸以及制备和应用它们的方法
DK1989302T3 (en) 2006-02-14 2018-07-23 Bp Corp North America Inc XYLANASES, NUCLEIC ACID CODING THEM AND PROCEDURES FOR THEIR PREPARATION AND USE
WO2009073709A1 (en) 2007-12-06 2009-06-11 Novozymes A/S Polypeptides having acetylxylan esterase activity and polynucleotides encoding same
DK2483403T3 (en) 2009-09-29 2018-02-12 Novozymes Inc POLYPEPTIDES WITH XYLANASE ACTIVITY AND POLYNUCLEOTIDES CODING THEM
CA2780198A1 (en) 2009-11-06 2011-05-12 Novozymes, Inc. Polypeptides having xylanase activity and polynucleotides encoding same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0373107B1 (de) * 1988-11-23 1994-03-23 Sandoz Ag Benutzung von Enzymen von Aureobasidium Pullulans für das Bleichen von Zellstoff
FI90888B (fi) * 1989-02-14 1993-12-31 Enso Gutzeit Oy Menetelmä selluloosamassan valkaisemiseksi

Also Published As

Publication number Publication date
NZ239501A (en) 1993-01-27
BR9106763A (pt) 1993-06-29
FI930803A (fi) 1993-02-23
JPH05509137A (ja) 1993-12-16
DK203490D0 (da) 1990-08-24
ATE118842T1 (de) 1995-03-15
EP0547100A1 (de) 1993-06-23
FI930803A0 (fi) 1993-02-23
DE69107620D1 (de) 1995-03-30
WO1992003608A1 (en) 1992-03-05
EP0547100B1 (de) 1995-02-22
ES2069307T3 (es) 1995-05-01

Similar Documents

Publication Publication Date Title
JP4499280B2 (ja) 過酸による化学パルプの漂白
CA1119360A (en) Method for bleaching oxygen delignified cellulose-containing pulp with ozone
JPS61138793A (ja) 強化酸化抽出法
EP0786029A1 (de) Verfahren zum entfernen von hexenuronsäuregruppen in zellstoffbrei durch wärmebehandlung
US6221206B1 (en) Method for oxygen delignification of a digested pulp
JPH07509280A (ja) 廃セルロース性紙製品の酸素脱リグニン化
US5173153A (en) Process for enhanced oxygen delignification using high consistency and a split alkali addition
JP3261661B2 (ja) 紙パルプの処理・漂白における酵素の使用方法及びそれを用いた装置
US4560437A (en) Process for delignification of chemical wood pulp using sodium sulphite or bisulphite prior to oxygen-alkali treatment
EP0547100B1 (de) Herstellungsverfahren von lignozellulosischem zellstoff und vorrichtung zur durchführung des verfahrens
WO1996009434A1 (en) Method of bleaching kraft pulp
US8268120B2 (en) Method for bleaching chemical paper pulps by final ozone treatment at high temperature
US3884752A (en) Single vessel wood pulp bleaching with chlorine dioxide followed by sodium hypochlorite or alkaline extraction
US6319357B1 (en) Method for two-stage oxygen bleaching and delignification of chemical pulp
US4238281A (en) Simplified bleaching process
KR100538083B1 (ko) 리그노셀룰로오스성 물질의 산소 탈리그닌화
WO1992007998A1 (en) Method for bleaching pulp
EP0669999A1 (de) Verfahren zum bleichen von zellstoff
JPH05247864A (ja) セルロースパルプの漂白法
SU379711A1 (ru) Способ отбелки целлюлозы
SE9600977D0 (sv) Use of acid-stage filtrate in cooking liquor preparation
WO1998014657A1 (en) Oxidation of disturbing metal ions in bleaching processes

Legal Events

Date Code Title Description
FZDE Discontinued
FZDE Discontinued

Effective date: 19970821