DE59402342D1 - Verbessertes Verfahren zur Bleiche von Holzstoffen - Google Patents
Verbessertes Verfahren zur Bleiche von HolzstoffenInfo
- Publication number
- DE59402342D1 DE59402342D1 DE59402342T DE59402342T DE59402342D1 DE 59402342 D1 DE59402342 D1 DE 59402342D1 DE 59402342 T DE59402342 T DE 59402342T DE 59402342 T DE59402342 T DE 59402342T DE 59402342 D1 DE59402342 D1 DE 59402342D1
- Authority
- DE
- Germany
- Prior art keywords
- improved process
- wood pulp
- bleaching wood
- bleaching
- floated
- 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.)
- Expired - Fee Related
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
- D21C9/001—Modification of pulp properties
- D21C9/007—Modification of pulp properties by mechanical or physical means
-
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4317466A DE4317466A1 (de) | 1993-05-26 | 1993-05-26 | Verbessertes Verfahren zur Bleiche von Holzstoffen |
Publications (1)
Publication Number | Publication Date |
---|---|
DE59402342D1 true DE59402342D1 (de) | 1997-05-15 |
Family
ID=6488926
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4317466A Withdrawn DE4317466A1 (de) | 1993-05-26 | 1993-05-26 | Verbessertes Verfahren zur Bleiche von Holzstoffen |
DE59402342T Expired - Fee Related DE59402342D1 (de) | 1993-05-26 | 1994-01-27 | Verbessertes Verfahren zur Bleiche von Holzstoffen |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4317466A Withdrawn DE4317466A1 (de) | 1993-05-26 | 1993-05-26 | Verbessertes Verfahren zur Bleiche von Holzstoffen |
Country Status (5)
Country | Link |
---|---|
US (1) | US5554258A (de) |
EP (1) | EP0627522B1 (de) |
AT (1) | ATE151479T1 (de) |
DE (2) | DE4317466A1 (de) |
FI (1) | FI108947B (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19635967A1 (de) * | 1996-09-05 | 1998-03-12 | Voith Sulzer Stoffaufbereitung | Verfahren zur Reinigung einer Suspension aus Primärfaserstoff |
AT405061B (de) * | 1997-07-01 | 1999-05-25 | Andritz Patentverwaltung | Verfahren zur minimierung des wassereinsatzes in einem wasserkreislauf einer papier-/zellstoff- oder holzstofffabrik |
US6451849B1 (en) | 1999-03-30 | 2002-09-17 | Hormos Nutraceutical Oy Ltd. | Use of hydroxymatairesinol for prevention of cancers, non-cancer, hormone dependent diseases and cardiovascular diseases by hydroxymatairesinol, and a pharmaceutical preparation, food additive and food product comprising hydroxymatairesinol |
US6689809B2 (en) | 1999-03-30 | 2004-02-10 | Hormos Nutraceutical Oy Ltd. | Food additive or product or a pharmaceutical preparation, comprising hydroxymatairesinol |
DE10109502A1 (de) | 2001-02-28 | 2002-09-12 | Rhodia Acetow Gmbh | Verfahren zum Abtrennen von Hemicellulosen aus hemicellulosehaltiger Biomasse sowie die mit dem Verfahren erhältliche Biomasse und Hemicellulose |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2036748A1 (en) * | 1969-03-20 | 1970-12-31 | Gernon William | Cellulose from pith-and marrow-containing - fibrous matter |
US3856788A (en) * | 1971-04-19 | 1974-12-24 | Gillette Co | Dyestuff and method of making and using same |
US4952308A (en) * | 1986-12-10 | 1990-08-28 | Beloit Corporation | Pressurized flotation module and method for pressurized foam separation |
DE59104480D1 (de) * | 1990-10-30 | 1995-03-16 | Benckiser Knapsack Ladenburg | Verfahren zur Wiedergewinnung von Fasern durch Flotationsdeinken aus Altpapier. |
US5178770A (en) * | 1991-07-12 | 1993-01-12 | Nalco Canada Inc. | Method of treating bctmp/ctmp wastewater |
JPH0571089A (ja) * | 1991-08-14 | 1993-03-23 | Mitsubishi Gas Chem Co Inc | 機械パルプの漂白方法 |
US5225046A (en) * | 1992-02-26 | 1993-07-06 | Shell Oil Company | Wastepaper deinking process |
-
1993
- 1993-05-26 DE DE4317466A patent/DE4317466A1/de not_active Withdrawn
-
1994
- 1994-01-27 DE DE59402342T patent/DE59402342D1/de not_active Expired - Fee Related
- 1994-01-27 AT AT94101156T patent/ATE151479T1/de active
- 1994-01-27 EP EP94101156A patent/EP0627522B1/de not_active Expired - Lifetime
- 1994-05-05 US US08/238,746 patent/US5554258A/en not_active Expired - Fee Related
- 1994-05-25 FI FI942424A patent/FI108947B/fi active
Also Published As
Publication number | Publication date |
---|---|
EP0627522A1 (de) | 1994-12-07 |
FI942424A0 (fi) | 1994-05-25 |
FI108947B (fi) | 2002-04-30 |
EP0627522B1 (de) | 1997-04-09 |
DE4317466A1 (de) | 1994-12-01 |
US5554258A (en) | 1996-09-10 |
FI942424A (fi) | 1994-11-27 |
ATE151479T1 (de) | 1997-04-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: DEGUSSA-HUELS AG, 60311 FRANKFURT, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: DEGUSSA AG, 40474 DUESSELDORF, DE |
|
8339 | Ceased/non-payment of the annual fee |