ZA946807B - Medium consistency ozone brightening of high consistency ozone bleached pulp. - Google Patents
Medium consistency ozone brightening of high consistency ozone bleached pulp.Info
- Publication number
- ZA946807B ZA946807B ZA946807A ZA946807A ZA946807B ZA 946807 B ZA946807 B ZA 946807B ZA 946807 A ZA946807 A ZA 946807A ZA 946807 A ZA946807 A ZA 946807A ZA 946807 B ZA946807 B ZA 946807B
- Authority
- ZA
- South Africa
- Prior art keywords
- consistency ozone
- brightening
- bleached pulp
- ozone
- medium
- Prior art date
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title 2
- 238000005282 brightening Methods 0.000 title 1
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
- D21C9/147—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
- D21C9/1057—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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
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 |
---|---|---|---|
US11677693A | 1993-09-03 | 1993-09-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA946807B true ZA946807B (en) | 1995-06-28 |
Family
ID=22369146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA946807A ZA946807B (en) | 1993-09-03 | 1994-09-05 | Medium consistency ozone brightening of high consistency ozone bleached pulp. |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0717800A4 (fr) |
AU (1) | AU7721694A (fr) |
BR (1) | BR9407457A (fr) |
CA (1) | CA2170733A1 (fr) |
FI (1) | FI960973A (fr) |
SE (1) | SE9600773L (fr) |
WO (1) | WO1995006773A1 (fr) |
ZA (1) | ZA946807B (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2382592A (en) * | 2001-11-30 | 2003-06-04 | Sca Hygiene Prod Gmbh | Use of ozone to enhance the wet strength of fibrous cellulosic material |
GB2391011A (en) * | 2002-07-19 | 2004-01-28 | Crosmill Ltd | Bleaching cellulose suspensions |
US9932709B2 (en) | 2013-03-15 | 2018-04-03 | Ecolab Usa Inc. | Processes and compositions for brightness improvement in paper production |
FR3007044B1 (fr) * | 2013-06-13 | 2016-01-15 | Air Liquide | Procede de traitement des pates papetieres chimiques par traitement a l'ozone en presence d'ions magnesium |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5173153A (en) * | 1991-01-03 | 1992-12-22 | Union Camp Patent Holding, Inc. | Process for enhanced oxygen delignification using high consistency and a split alkali addition |
DK0402335T4 (da) * | 1989-06-06 | 2001-06-25 | Eka Chemicals Ab | Fremgangsmåde til blegning af lignocelluloseholdigpulp |
AU636173B2 (en) * | 1989-10-30 | 1993-04-22 | Lenzing Aktiengesellschaft | Method for the chlorine-free bleaching of pulps |
ES2073027T3 (es) * | 1990-05-17 | 1995-08-01 | Union Camp Patent Holding | Procedimiento medioambientalmente mejorado para blanquear materiales lignocelulosicos. |
US5328564A (en) * | 1990-09-17 | 1994-07-12 | Kamyr, Inc. | Modified digestion of paper pulp followed by ozone bleaching |
CA2089516A1 (fr) * | 1992-02-21 | 1993-08-22 | Kaj Henricson | Procede de mise en pate et de blanchiment sans chlore |
-
1994
- 1994-09-01 WO PCT/US1994/010050 patent/WO1995006773A1/fr not_active Application Discontinuation
- 1994-09-01 AU AU77216/94A patent/AU7721694A/en not_active Abandoned
- 1994-09-01 BR BR9407457A patent/BR9407457A/pt not_active Application Discontinuation
- 1994-09-01 EP EP94928024A patent/EP0717800A4/fr not_active Withdrawn
- 1994-09-01 CA CA002170733A patent/CA2170733A1/fr not_active Abandoned
- 1994-09-05 ZA ZA946807A patent/ZA946807B/xx unknown
-
1996
- 1996-02-28 SE SE9600773A patent/SE9600773L/xx not_active Application Discontinuation
- 1996-03-01 FI FI960973A patent/FI960973A/fi unknown
Also Published As
Publication number | Publication date |
---|---|
FI960973A (fi) | 1996-04-30 |
SE9600773L (sv) | 1996-04-18 |
SE9600773D0 (sv) | 1996-02-28 |
AU7721694A (en) | 1995-03-22 |
EP0717800A1 (fr) | 1996-06-26 |
BR9407457A (pt) | 1996-11-12 |
EP0717800A4 (fr) | 1998-10-28 |
CA2170733A1 (fr) | 1995-03-09 |
WO1995006773A1 (fr) | 1995-03-09 |
FI960973A0 (fi) | 1996-03-01 |
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