EP0720676A4 - Procede ameliore de blanchiment de pate lignocellulosique - Google Patents
Procede ameliore de blanchiment de pate lignocellulosiqueInfo
- Publication number
- EP0720676A4 EP0720676A4 EP94928001A EP94928001A EP0720676A4 EP 0720676 A4 EP0720676 A4 EP 0720676A4 EP 94928001 A EP94928001 A EP 94928001A EP 94928001 A EP94928001 A EP 94928001A EP 0720676 A4 EP0720676 A4 EP 0720676A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- improved method
- lignocellulosic pulp
- bleaching lignocellulosic
- bleaching
- pulp
- 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- Withdrawn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
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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/0042—Fractionating or concentration of spent liquors by special methods
-
- 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11604093A | 1993-09-02 | 1993-09-02 | |
US116040 | 1993-09-02 | ||
US26809994A | 1994-06-29 | 1994-06-29 | |
US268099 | 1994-06-29 | ||
PCT/US1994/009951 WO1995006772A1 (fr) | 1993-09-02 | 1994-09-02 | Procede ameliore de blanchiment de pate lignocellulosique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0720676A1 EP0720676A1 (fr) | 1996-07-10 |
EP0720676A4 true EP0720676A4 (fr) | 1998-03-04 |
Family
ID=26813841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94928001A Withdrawn EP0720676A4 (fr) | 1993-09-02 | 1994-09-02 | Procede ameliore de blanchiment de pate lignocellulosique |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0720676A4 (fr) |
JP (1) | JPH09502229A (fr) |
AU (1) | AU7720094A (fr) |
BR (1) | BR9407409A (fr) |
CA (1) | CA2170398A1 (fr) |
FI (1) | FI960972A (fr) |
WO (1) | WO1995006772A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4641629B2 (ja) * | 2001-01-26 | 2011-03-02 | 日本製紙株式会社 | セルロース質繊維材料パルプの漂白方法 |
FI20022068A (fi) * | 2002-11-20 | 2004-05-21 | Metso Paper Inc | Menetelmä ja järjestelmä mekaanisen massan valmistuksessa |
FI126563B (en) * | 2012-03-12 | 2017-02-15 | Upm Kymmene Corp | A method and system for treating fluid flows at a pulp mill |
FI128900B (en) * | 2012-03-12 | 2021-02-26 | Upm Kymmene Corp | Process for the treatment of liquid streams in a cellulose plant and the use of low chloride process water in a cellulose plant |
CN104703718B (zh) * | 2012-09-27 | 2018-04-03 | 安德里兹有限公司 | 木质纤维素纤维束材料的化学处理及与其相关的方法和系统 |
SE2230370A1 (en) * | 2022-11-15 | 2024-05-16 | Valmet Oy | Method for bleaching cellulose pulp formed from recycled textile material |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986004938A1 (fr) * | 1985-02-14 | 1986-08-28 | Edward Francis Elton | Procede et appareil de delignification alcaline de materiaux fibreux lignocellulosiques |
US5085734A (en) * | 1989-02-15 | 1992-02-04 | Union Camp Patent Holding, Inc. | Methods of high consistency oxygen delignification using a low consistency alkali pretreatment |
WO1993014262A1 (fr) * | 1992-01-21 | 1993-07-22 | Sunds Defibrator Industries Aktiebolag | Blanchiment de pate chimique |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO142091C (no) * | 1977-10-17 | 1980-06-25 | Myrens Verksted As | Fremgangsmaate ved ozonbehandling av raffinoermekanisk og termomekanisk masse. |
WO1991018145A1 (fr) * | 1990-05-17 | 1991-11-28 | Union Camp Corporation | Procede moins polluant de blanchiment de matieres lignocellulosiques |
-
1994
- 1994-09-02 BR BR9407409A patent/BR9407409A/pt not_active Application Discontinuation
- 1994-09-02 EP EP94928001A patent/EP0720676A4/fr not_active Withdrawn
- 1994-09-02 CA CA 2170398 patent/CA2170398A1/fr not_active Abandoned
- 1994-09-02 WO PCT/US1994/009951 patent/WO1995006772A1/fr not_active Application Discontinuation
- 1994-09-02 AU AU77200/94A patent/AU7720094A/en not_active Abandoned
- 1994-09-02 JP JP7508290A patent/JPH09502229A/ja active Pending
-
1996
- 1996-03-01 FI FI960972A patent/FI960972A/fi unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986004938A1 (fr) * | 1985-02-14 | 1986-08-28 | Edward Francis Elton | Procede et appareil de delignification alcaline de materiaux fibreux lignocellulosiques |
US5085734A (en) * | 1989-02-15 | 1992-02-04 | Union Camp Patent Holding, Inc. | Methods of high consistency oxygen delignification using a low consistency alkali pretreatment |
WO1993014262A1 (fr) * | 1992-01-21 | 1993-07-22 | Sunds Defibrator Industries Aktiebolag | Blanchiment de pate chimique |
Non-Patent Citations (1)
Title |
---|
See also references of WO9506772A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1995006772A1 (fr) | 1995-03-09 |
FI960972A0 (fi) | 1996-03-01 |
AU7720094A (en) | 1995-03-22 |
JPH09502229A (ja) | 1997-03-04 |
BR9407409A (pt) | 1996-11-12 |
CA2170398A1 (fr) | 1995-03-09 |
EP0720676A1 (fr) | 1996-07-10 |
FI960972A (fi) | 1996-04-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2296726B (en) | Process for making refined cellulose | |
EP0791098A4 (fr) | Appareil de peluchage de la pate a papier | |
AU4271596A (en) | Process for treating refiner pulp | |
AU9249698A (en) | Method for bleaching mechanical pulp | |
FI944928A0 (fi) | Menetelmä kemiallisen paperimassan valkaisemiseksi | |
AU1584295A (en) | Pulp bleaching | |
EP0720676A4 (fr) | Procede ameliore de blanchiment de pate lignocellulosique | |
AU6206094A (en) | Chemical paper pulp delignification method | |
FI934056A0 (fi) | Menetelmä massan valkaisemiseksi | |
ZA951344B (en) | Pulp bleaching method | |
GB9422595D0 (en) | Process for making pulp mouldings | |
FI943333A (fi) | Menetelmä lignoselluloosapitoisten kuitujen valkaisemiseksi | |
ZA946761B (en) | Method for bleaching lignocellulosic pulp | |
ZA955971B (en) | Method of bleaching pulp | |
ZA979999B (en) | Method of pulp bleaching. | |
AU1168892A (en) | Process for bleaching pulp | |
ZA908684B (en) | Method for the chlorine-free bleaching of pulps | |
GB9319811D0 (en) | Wood pulp bleaching process | |
FI943388A (fi) | Menetelmä paperimassan valkaisemiseksi | |
FI950785A0 (fi) | Menetelmä massan valkaisemiseksi | |
EP0793747A4 (fr) | Procedes de reduction en pate et de desencrage | |
ZA938748B (en) | Process for delignification of lignocellulose-containing pulp | |
AU5400194A (en) | Bleaching method for alkaline sulphate pulp | |
FI950200A (fi) | Menetelmä massan valkaisemiseksi | |
GB9309255D0 (en) | Kraft pulping process |
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: 19960401 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT SE |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 19980114 |
|
AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): AT SE |
|
17Q | First examination report despatched |
Effective date: 19980504 |
|
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: 19981117 |