ZA978715B - Process for the delignification and bleaching of chemical pulp - Google Patents
Process for the delignification and bleaching of chemical pulpInfo
- Publication number
- ZA978715B ZA978715B ZA978715A ZA978715A ZA978715B ZA 978715 B ZA978715 B ZA 978715B ZA 978715 A ZA978715 A ZA 978715A ZA 978715 A ZA978715 A ZA 978715A ZA 978715 B ZA978715 B ZA 978715B
- Authority
- ZA
- South Africa
- Prior art keywords
- delignification
- bleaching
- chemical pulp
- pulp
- chemical
- 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
- 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
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
-
- 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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
-
- 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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9600859A BE1010679A3 (en) | 1996-10-11 | 1996-10-11 | Delignification process and laundering pulp chemicals. |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA978715B true ZA978715B (en) | 1999-03-29 |
Family
ID=3890027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA978715A ZA978715B (en) | 1996-10-11 | 1997-09-29 | Process for the delignification and bleaching of chemical pulp |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU4778697A (en) |
BE (1) | BE1010679A3 (en) |
ID (1) | ID18872A (en) |
WO (1) | WO1998016683A1 (en) |
ZA (1) | ZA978715B (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE470065C (en) * | 1991-04-30 | 1996-01-15 | Eka Nobel Ab | Treatment of chemical pulp with an acid and then a magnesium and calcium compound in chlorine-free bleaching |
WO1994010375A1 (en) * | 1992-10-26 | 1994-05-11 | Kamyr, Inc. | Displacement chelate treatment of pulp |
EP0622491B2 (en) * | 1993-04-20 | 2002-07-17 | Eka Chemicals AB | Method for bleaching lignocellulose-containing pulp |
EP0858526A1 (en) * | 1995-02-17 | 1998-08-19 | Ahlstrom Machinery Oy | Method of pretreating pulp to be bleached with peroxide |
-
1996
- 1996-10-11 BE BE9600859A patent/BE1010679A3/en not_active IP Right Cessation
-
1997
- 1997-09-25 WO PCT/EP1997/005309 patent/WO1998016683A1/en active Application Filing
- 1997-09-25 AU AU47786/97A patent/AU4778697A/en not_active Abandoned
- 1997-09-29 ZA ZA978715A patent/ZA978715B/en unknown
- 1997-10-13 ID IDP973421A patent/ID18872A/en unknown
Also Published As
Publication number | Publication date |
---|---|
AU4778697A (en) | 1998-05-11 |
BE1010679A3 (en) | 1998-11-03 |
WO1998016683A1 (en) | 1998-04-23 |
ID18872A (en) | 1998-05-14 |
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