ZA924021B - Process for the bleaching and delignification of chemical paper pulps and application of this process to the bleaching and delignification of kraft pulps and of asam pulps - Google Patents
Process for the bleaching and delignification of chemical paper pulps and application of this process to the bleaching and delignification of kraft pulps and of asam pulpsInfo
- Publication number
- ZA924021B ZA924021B ZA924021A ZA924021A ZA924021B ZA 924021 B ZA924021 B ZA 924021B ZA 924021 A ZA924021 A ZA 924021A ZA 924021 A ZA924021 A ZA 924021A ZA 924021 B ZA924021 B ZA 924021B
- Authority
- ZA
- South Africa
- Prior art keywords
- pulps
- delignification
- bleaching
- asam
- application
- 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
- D21C9/1057—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
-
- 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
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
-
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
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 |
---|---|---|---|
BE9100549A BE1004974A3 (fr) | 1991-06-06 | 1991-06-06 | Procede pour le blanchiment et la delignification de pates a papier chimiques et application de ce procede au blanchiment et a la delignification des pates kraft et des pates asam. |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA924021B true ZA924021B (en) | 1993-02-24 |
Family
ID=3885547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA924021A ZA924021B (en) | 1991-06-06 | 1992-06-02 | Process for the bleaching and delignification of chemical paper pulps and application of this process to the bleaching and delignification of kraft pulps and of asam pulps |
Country Status (16)
Country | Link |
---|---|
EP (1) | EP0587822B1 (xx) |
JP (1) | JPH06507683A (xx) |
AR (1) | AR247257A1 (xx) |
AT (1) | ATE127179T1 (xx) |
AU (1) | AU651462B2 (xx) |
BE (1) | BE1004974A3 (xx) |
BR (1) | BR9206112A (xx) |
CA (1) | CA2110698A1 (xx) |
DE (1) | DE69204457T2 (xx) |
ES (1) | ES2079209T3 (xx) |
FI (1) | FI935422A (xx) |
NO (1) | NO302129B1 (xx) |
NZ (1) | NZ242996A (xx) |
WO (1) | WO1992021814A1 (xx) |
YU (1) | YU48264B (xx) |
ZA (1) | ZA924021B (xx) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1006881A3 (fr) * | 1993-03-02 | 1995-01-17 | Solvay Interox | Procede pour la delignification d'une pate a papier chimique. |
SE506480C2 (sv) * | 1995-06-29 | 1997-12-22 | Sca Graphic Res Ab | Blekning av lignocellulosahaltigt fibermaterial med ozon och persyra i ett kombinationssteg |
US5770011A (en) * | 1995-11-17 | 1998-06-23 | International Paper Company | Neutral monoperoxysulfate bleaching process |
FI964715A (fi) * | 1996-11-26 | 1998-05-27 | Keskuslaboratorio | Menetelmä selluloosamassan valkaisemiseksi |
EP0931874A1 (en) * | 1998-01-22 | 1999-07-28 | Degussa-Hüls Aktiengesellschaft | Pulp bleaching process including final stage treatment step with salt of peroxymonosulfuric acid |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4372812A (en) * | 1978-04-07 | 1983-02-08 | International Paper Company | Chlorine free process for bleaching lignocellulosic pulp |
US5091054A (en) * | 1989-08-18 | 1992-02-25 | Degussa Corporation | Process for bleaching and delignification of lignocellulosic |
-
1991
- 1991-06-06 BE BE9100549A patent/BE1004974A3/fr not_active IP Right Cessation
-
1992
- 1992-06-01 BR BR9206112A patent/BR9206112A/pt not_active Application Discontinuation
- 1992-06-01 AU AU18775/92A patent/AU651462B2/en not_active Ceased
- 1992-06-01 EP EP92924472A patent/EP0587822B1/fr not_active Expired - Lifetime
- 1992-06-01 ES ES92924472T patent/ES2079209T3/es not_active Expired - Fee Related
- 1992-06-01 DE DE69204457T patent/DE69204457T2/de not_active Expired - Fee Related
- 1992-06-01 WO PCT/EP1992/001222 patent/WO1992021814A1/fr active IP Right Grant
- 1992-06-01 CA CA002110698A patent/CA2110698A1/fr not_active Abandoned
- 1992-06-01 JP JP4510141A patent/JPH06507683A/ja active Pending
- 1992-06-01 AT AT92924472T patent/ATE127179T1/de not_active IP Right Cessation
- 1992-06-02 AR AR92322455A patent/AR247257A1/es active
- 1992-06-02 ZA ZA924021A patent/ZA924021B/xx unknown
- 1992-06-03 NZ NZ242996A patent/NZ242996A/xx unknown
- 1992-06-05 YU YU58792A patent/YU48264B/sh unknown
-
1993
- 1993-12-03 NO NO934406A patent/NO302129B1/no unknown
- 1993-12-03 FI FI935422A patent/FI935422A/fi unknown
Also Published As
Publication number | Publication date |
---|---|
JPH06507683A (ja) | 1994-09-01 |
AU1877592A (en) | 1993-01-08 |
AU651462B2 (en) | 1994-07-21 |
ATE127179T1 (de) | 1995-09-15 |
AR247257A1 (es) | 1994-11-30 |
FI935422A0 (fi) | 1993-12-03 |
DE69204457D1 (de) | 1995-10-05 |
BE1004974A3 (fr) | 1993-03-09 |
DE69204457T2 (de) | 1996-04-18 |
NO934406D0 (no) | 1993-12-03 |
BR9206112A (pt) | 1995-10-10 |
NZ242996A (en) | 1995-01-27 |
WO1992021814A1 (fr) | 1992-12-10 |
ES2079209T3 (es) | 1996-01-01 |
FI935422A (fi) | 1994-01-11 |
CA2110698A1 (fr) | 1992-12-10 |
YU48264B (sh) | 1997-09-30 |
NO302129B1 (no) | 1998-01-26 |
EP0587822A1 (fr) | 1994-03-23 |
YU58792A (sh) | 1994-09-09 |
EP0587822B1 (fr) | 1995-08-30 |
NO934406L (no) | 1994-01-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU4170693A (en) | Process for the delignification of a chemical paper pulp | |
AR243946A1 (es) | Procedimiento para blanquear pulpas, sin usar cloro. | |
DE3061582D1 (en) | Process for the delignification of unbleached chemical paper pulp | |
AU551287B2 (en) | Method for the delignifying bleaching of cellulose pulp | |
ZA921626B (en) | Process for bleaching a chemical paper pulp and application of this process to the bleaching of a kraft pulp. | |
NO964609L (no) | Fremgangsmåte for fremstilling av delignifisert og bleket kjemisk papirmasse | |
GB2287724B (en) | Process and agent for the oxidative bleaching of wood pulp and/or deinking waste paper | |
ZA931096B (en) | Modified digestion of paper pulp followed by ozone bleaching | |
AU3602295A (en) | Process for delignification and bleaching of chemical wood pulps | |
ZA924021B (en) | Process for the bleaching and delignification of chemical paper pulps and application of this process to the bleaching and delignification of kraft pulps and of asam pulps | |
ZA911062B (en) | Bleaching of paper pulp | |
JPS57121691A (en) | Delignifying and/or bleaching of cellulose pulp | |
ZA955827B (en) | Bleaching of high consistency lignocellulosic pulp | |
ZA941468B (en) | Process for the delignification of a chemical paper pulp | |
AU636766B2 (en) | Pneumatic reactor ozone bleaching of paper pulp | |
PH21180A (en) | Process for the delignification and bleaching of chemical or semi-chemical bagasse pulp | |
AU2376195A (en) | A method for producing chemicals which can be used for bleaching of pulp to the paper industry | |
AU2202188A (en) | Method of bleaching or delignification of cellulose pulp with oxygen | |
ZA991903B (en) | Process for the bleaching and/or delignification of paper pulps. | |
JPS57167475A (en) | Production of bleached pulp from unbleached used paper | |
FI951533A (fi) | Parannettu suursakeuslignoselluloosamassan valkaisu | |
AU2755895A (en) | Bleaching of chemical paper pulp under sulphonating conditions | |
JPS57171785A (en) | Production of bleached pulp from unbleached used paper | |
AU7752991A (en) | Bleaching of chemical pulp | |
JPS57121690A (en) | Delignifying and/or bleaching of cellulose pulp |