NZ239501A - Treatment of unbleached wood pulp by adding a xylanase to it before the last washing, apparatus therefor - Google Patents
Treatment of unbleached wood pulp by adding a xylanase to it before the last washing, apparatus thereforInfo
- Publication number
- NZ239501A NZ239501A NZ239501A NZ23950191A NZ239501A NZ 239501 A NZ239501 A NZ 239501A NZ 239501 A NZ239501 A NZ 239501A NZ 23950191 A NZ23950191 A NZ 23950191A NZ 239501 A NZ239501 A NZ 239501A
- Authority
- NZ
- New Zealand
- Prior art keywords
- treatment
- xylanase
- wood pulp
- apparatus therefor
- last washing
- Prior art date
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)
Abstract
A process for treatment of lignocellulosic pulp comprising a multistage washing of the unbleached kraft brown stock and a xylanase treatment. The xylanase treatment is carried out in a holding tank introduced upstream the first washing unit or downstream one or more of the other washing units except for the last washing unit.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK203490A DK203490D0 (en) | 1990-08-24 | 1990-08-24 | PROCEDURE FOR TREATING LIGNOCELLULOS PULP AND APPARATUS FOR PERFORMING THE PROCESS |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ239501A true NZ239501A (en) | 1993-01-27 |
Family
ID=8109613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NZ239501A NZ239501A (en) | 1990-08-24 | 1991-08-22 | Treatment of unbleached wood pulp by adding a xylanase to it before the last washing, apparatus therefor |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0547100B1 (en) |
JP (1) | JPH05509137A (en) |
AT (1) | ATE118842T1 (en) |
BR (1) | BR9106763A (en) |
CA (1) | CA2090338A1 (en) |
DE (1) | DE69107620D1 (en) |
DK (1) | DK203490D0 (en) |
ES (1) | ES2069307T3 (en) |
FI (1) | FI930803A (en) |
NZ (1) | NZ239501A (en) |
WO (1) | WO1992003608A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101864406B (en) | 2001-06-06 | 2016-03-30 | 诺维信公司 | Endo-beta-1,4-glucanase |
BRPI0312121B1 (en) | 2002-06-14 | 2019-10-01 | Verenium Corporation | PREPARATION OF PROTEIN, PROPERTY POLYPEPTIDE AND METHODS FOR PREPARING AND USING THEM |
BRPI0707784B1 (en) | 2006-02-14 | 2018-05-22 | Verenium Corporation | ISOLATED, SYNTHETIC OR RECOMBINANT NUCLEIC ACID, EXPRESSION CASSETTE, CLONING VECTOR OR VEHICLE, TRANSFORMED ISOLATED HOST CELL, AND METHOD FOR PRODUCTION OF A RECOMBINANT POLYPEPTIDE |
CN101909461B (en) | 2007-12-06 | 2015-10-07 | 诺维信公司 | There are the polypeptide of acetyl xylan esterase activity and the polynucleotide of this polypeptide of coding |
WO2011041405A1 (en) | 2009-09-29 | 2011-04-07 | Novozymes, Inc. | Polypeptides having xylanase activity and polynucleotides encoding same |
CA2780198A1 (en) | 2009-11-06 | 2011-05-12 | Novozymes, Inc. | Polypeptides having xylanase activity and polynucleotides encoding same |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2003503A1 (en) * | 1988-11-23 | 1990-05-23 | Roberta Lee Farrell | Use of aureobasidium pullulans in pulp bleaching |
FI90888B (en) * | 1989-02-14 | 1993-12-31 | Enso Gutzeit Oy | Method for bleaching cellulose pulp |
-
1990
- 1990-08-24 DK DK203490A patent/DK203490D0/en not_active Application Discontinuation
-
1991
- 1991-08-21 CA CA002090338A patent/CA2090338A1/en not_active Abandoned
- 1991-08-21 EP EP91915560A patent/EP0547100B1/en not_active Expired - Lifetime
- 1991-08-21 JP JP3514774A patent/JPH05509137A/en active Pending
- 1991-08-21 AT AT91915560T patent/ATE118842T1/en not_active IP Right Cessation
- 1991-08-21 ES ES91915560T patent/ES2069307T3/en not_active Expired - Lifetime
- 1991-08-21 DE DE69107620T patent/DE69107620D1/en not_active Expired - Lifetime
- 1991-08-21 BR BR919106763A patent/BR9106763A/en not_active Application Discontinuation
- 1991-08-21 WO PCT/DK1991/000239 patent/WO1992003608A1/en active IP Right Grant
- 1991-08-22 NZ NZ239501A patent/NZ239501A/en unknown
-
1993
- 1993-02-23 FI FI930803A patent/FI930803A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP0547100A1 (en) | 1993-06-23 |
DK203490D0 (en) | 1990-08-24 |
JPH05509137A (en) | 1993-12-16 |
WO1992003608A1 (en) | 1992-03-05 |
ES2069307T3 (en) | 1995-05-01 |
CA2090338A1 (en) | 1992-02-25 |
EP0547100B1 (en) | 1995-02-22 |
FI930803A0 (en) | 1993-02-23 |
ATE118842T1 (en) | 1995-03-15 |
DE69107620D1 (en) | 1995-03-30 |
BR9106763A (en) | 1993-06-29 |
FI930803A (en) | 1993-02-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2552125B1 (en) | PROCESS FOR THE TREATMENT OF CELLULOSIC MATERIALS BY OXIDIZING AGENTS | |
DE3061330D1 (en) | Process for the delignification and bleaching of chemical and semichemical cellulose pulps | |
SE9503595D0 (en) | Method of treating cellulose pulps | |
NZ239501A (en) | Treatment of unbleached wood pulp by adding a xylanase to it before the last washing, apparatus therefor | |
ES2005026A6 (en) | A method for the manufacture of products containing fibers of lignocellulosic material. | |
TW332226B (en) | Method for forming durable creases in a cellulosic fiber textile | |
MY108515A (en) | Process and apparatus for the manufacture of pulp for paper, board, fiberboard and similar products. | |
FR2436844A2 (en) | Converting lignocellulose material into fibre pulp - for paper-making, by introducing bleach whilst the lignocellulose is being broken down | |
SE9401771D0 (en) | Process for removal of metal compounds in lignocellulosic pulp | |
RU93005264A (en) | METHOD OF COOKING PULP | |
RU94036007A (en) | Method for delignofication of lignocellulose material | |
ZA918441B (en) | Pulping process | |
GB1521332A (en) | Apparatus for manufacturing pulp | |
NO930610L (en) | PROCEDURE FOR TREATING LIGNOCELLULOS MASS AND APPARATUS FOR CARRYING OUT THE PROCEDURE | |
SE9401628D0 (en) | Oxygen delignification procedure | |
FI941615A (en) | Method for the enzymatic treatment of lignocellulosic materials, in particular cellulosic pulps | |
DE59704964D1 (en) | Process for the production of bleached special pulps | |
SE9500926L (en) | Pulp bleaching process | |
SE8008336L (en) | PROCEDURE FOR DELIGNIFICATION / WHITING OF CELLULOSAMASSA | |
FI953074A (en) | Method and apparatus for treating pulp |