EP0717800A4 - MEDIUM CONSISTENCY OZONE BLEACHING OF HIGH CONSISTENCY OZONE WHITE FIBER - Google Patents
MEDIUM CONSISTENCY OZONE BLEACHING OF HIGH CONSISTENCY OZONE WHITE FIBERInfo
- Publication number
- EP0717800A4 EP0717800A4 EP94928024A EP94928024A EP0717800A4 EP 0717800 A4 EP0717800 A4 EP 0717800A4 EP 94928024 A EP94928024 A EP 94928024A EP 94928024 A EP94928024 A EP 94928024A EP 0717800 A4 EP0717800 A4 EP 0717800A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- consistency ozone
- brightening
- bleached pulp
- ozone
- medium
- 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.)
- Withdrawn
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 (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11677693A | 1993-09-03 | 1993-09-03 | |
US116776 | 1993-09-03 | ||
PCT/US1994/010050 WO1995006773A1 (en) | 1993-09-03 | 1994-09-01 | Medium consistency ozone brightening of high consistency ozone bleached pulp |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0717800A1 EP0717800A1 (en) | 1996-06-26 |
EP0717800A4 true EP0717800A4 (en) | 1998-10-28 |
Family
ID=22369146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94928024A Withdrawn EP0717800A4 (en) | 1993-09-03 | 1994-09-01 | MEDIUM CONSISTENCY OZONE BLEACHING OF HIGH CONSISTENCY OZONE WHITE FIBER |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0717800A4 (sv) |
AU (1) | AU7721694A (sv) |
BR (1) | BR9407457A (sv) |
CA (1) | CA2170733A1 (sv) |
FI (1) | FI960973A (sv) |
SE (1) | SE9600773L (sv) |
WO (1) | WO1995006773A1 (sv) |
ZA (1) | ZA946807B (sv) |
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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0426652A1 (de) * | 1989-10-30 | 1991-05-08 | Lenzing Aktiengesellschaft | Verfahren zum chlorfreien Bleichen von Zellstoffen |
WO1991018145A1 (en) * | 1990-05-17 | 1991-11-28 | Union Camp Corporation | Environmentally improved process for bleaching lignocellulosic materials |
EP0557112A1 (en) * | 1992-02-21 | 1993-08-25 | Kamyr, Inc. | Chlorine free bleaching and pulping process |
Family Cites Families (3)
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 |
EP0402335B2 (en) * | 1989-06-06 | 2001-03-14 | Eka Chemicals AB | Process for bleaching lignocellulose-containing pulps |
US5328564A (en) * | 1990-09-17 | 1994-07-12 | Kamyr, Inc. | Modified digestion of paper pulp followed by ozone bleaching |
-
1994
- 1994-09-01 EP EP94928024A patent/EP0717800A4/en not_active Withdrawn
- 1994-09-01 BR BR9407457A patent/BR9407457A/pt not_active Application Discontinuation
- 1994-09-01 AU AU77216/94A patent/AU7721694A/en not_active Abandoned
- 1994-09-01 CA CA002170733A patent/CA2170733A1/en not_active Abandoned
- 1994-09-01 WO PCT/US1994/010050 patent/WO1995006773A1/en not_active Application Discontinuation
- 1994-09-05 ZA ZA946807A patent/ZA946807B/xx unknown
-
1996
- 1996-02-28 SE SE9600773A patent/SE9600773L/sv not_active Application Discontinuation
- 1996-03-01 FI FI960973A patent/FI960973A/sv unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0426652A1 (de) * | 1989-10-30 | 1991-05-08 | Lenzing Aktiengesellschaft | Verfahren zum chlorfreien Bleichen von Zellstoffen |
WO1991018145A1 (en) * | 1990-05-17 | 1991-11-28 | Union Camp Corporation | Environmentally improved process for bleaching lignocellulosic materials |
EP0557112A1 (en) * | 1992-02-21 | 1993-08-25 | Kamyr, Inc. | Chlorine free bleaching and pulping process |
Non-Patent Citations (1)
Title |
---|
See also references of WO9506773A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU7721694A (en) | 1995-03-22 |
FI960973A (sv) | 1996-04-30 |
SE9600773L (sv) | 1996-04-18 |
CA2170733A1 (en) | 1995-03-09 |
ZA946807B (en) | 1995-06-28 |
FI960973A0 (sv) | 1996-03-01 |
EP0717800A1 (en) | 1996-06-26 |
WO1995006773A1 (en) | 1995-03-09 |
BR9407457A (pt) | 1996-11-12 |
SE9600773D0 (sv) | 1996-02-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19960301 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ROSEN, ALLEN Inventor name: PIKULIN, MICHAEL, A. Inventor name: GANDEK, THOMAS, P. Inventor name: GRIGGS, BRUCE F. Inventor name: PANGALOS, GEORGE Inventor name: ALI, OMAR, F. Inventor name: EACHUS, SPENCER, W. |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 19980914 |
|
AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT |
|
17Q | First examination report despatched |
Effective date: 19981223 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19990504 |