DE69217164D1 - Reinigung und Bleichen von Sekundärfasern - Google Patents
Reinigung und Bleichen von SekundärfasernInfo
- Publication number
- DE69217164D1 DE69217164D1 DE69217164T DE69217164T DE69217164D1 DE 69217164 D1 DE69217164 D1 DE 69217164D1 DE 69217164 T DE69217164 T DE 69217164T DE 69217164 T DE69217164 T DE 69217164T DE 69217164 D1 DE69217164 D1 DE 69217164D1
- Authority
- DE
- Germany
- Prior art keywords
- bleaching
- oxygen
- contacting
- pulp
- cleaning
- 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
-
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/792,512 US5234544A (en) | 1989-10-18 | 1991-11-13 | Cleaning and bleaching of secondary fiber |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69217164D1 true DE69217164D1 (de) | 1997-03-13 |
DE69217164T2 DE69217164T2 (de) | 1997-05-15 |
Family
ID=25157151
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1992119032 Pending DE542147T1 (de) | 1991-11-13 | 1992-11-06 | Reinigung und Bleichen von Sekundärfasern. |
DE1992617164 Expired - Fee Related DE69217164T2 (de) | 1991-11-13 | 1992-11-06 | Reinigung und Bleichen von Sekundärfasern |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1992119032 Pending DE542147T1 (de) | 1991-11-13 | 1992-11-06 | Reinigung und Bleichen von Sekundärfasern. |
Country Status (5)
Country | Link |
---|---|
US (1) | US5234544A (de) |
EP (1) | EP0542147B1 (de) |
AT (1) | ATE148510T1 (de) |
DE (2) | DE542147T1 (de) |
ES (1) | ES2060552T3 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5466333A (en) * | 1988-06-30 | 1995-11-14 | Guttag; Alvin | Process for recycling printed and plastic coated paper |
CA2082557C (en) * | 1992-02-24 | 1997-03-11 | Charles W. Hankins | Integrated pulping process of waste paper yielding tissue-grade paper fibers |
US5458736A (en) * | 1994-01-31 | 1995-10-17 | Westvaco Corporation | Method for producing recycled materials for hygienic end uses |
US6153300A (en) | 1994-04-18 | 2000-11-28 | Ahlstrom Machinery, Inc. | Bleaching cellulose pulp having cleanliness which varies significantly over time using at least two different bleaching stages and bleaching chemicals |
US5582681A (en) | 1994-06-29 | 1996-12-10 | Kimberly-Clark Corporation | Production of soft paper products from old newspaper |
US6001218A (en) * | 1994-06-29 | 1999-12-14 | Kimberly-Clark Worldwide, Inc. | Production of soft paper products from old newspaper |
US6074527A (en) | 1994-06-29 | 2000-06-13 | Kimberly-Clark Worldwide, Inc. | Production of soft paper products from coarse cellulosic fibers |
US5718801A (en) * | 1994-08-11 | 1998-02-17 | Ppg Industries, Inc. | Method for controlling froth and reducing stickies in the flotation process for deinking waste paper using a froth moderating agent |
SE9403494L (sv) * | 1994-10-13 | 1996-04-14 | Aga Ab | Sätt och anordning vid blekning av returfiber |
US5733412A (en) * | 1995-09-13 | 1998-03-31 | International Paper Company | Decolorizing brown fibers in recycled pulp |
WO1997032077A1 (en) * | 1996-02-27 | 1997-09-04 | Tetra Laval Holding & Finance S.A. | Process for sanitizing post-consumer paper fibers and product formed therefrom |
US5762757A (en) * | 1996-12-05 | 1998-06-09 | Betzdearborn Inc. | Methods for inhibiting organic contaminant deposition in pulp and papermaking systems |
US6387210B1 (en) | 1998-09-30 | 2002-05-14 | Kimberly-Clark Worldwide, Inc. | Method of making sanitary paper product from coarse fibers |
FR2836162B1 (fr) * | 2002-02-18 | 2004-05-07 | Air Liquide | Procede de traitement de papiers uses par l'ozone |
FI121385B (fi) * | 2004-02-24 | 2010-10-29 | Kemira Oyj | Menetelmä suursaantomassojen uuteainepitoisuuden vähentämiseksi ja menetelmä valkaistujen suursaantomassojen valmistamiseksi |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE247934C (de) * | ||||
DE247932C (de) * | ||||
LU76021A1 (de) * | 1976-10-15 | 1978-05-16 | ||
US4360439A (en) * | 1977-10-20 | 1982-11-23 | Montedison S.P.A. | Composition for the de-inking of printed waste paper by the washing process |
FR2482989A1 (fr) * | 1980-05-22 | 1981-11-27 | Interox | Procede pour la regeneration de vieux papiers |
US4416727A (en) * | 1982-01-11 | 1983-11-22 | Air Products And Chemicals, Inc. | Process for recovering fiber from wet-strength resin coated paper |
US4935096A (en) * | 1988-12-06 | 1990-06-19 | Garden State Paper Company, Inc. | Process for the deinking of cellulosic materials |
-
1991
- 1991-11-13 US US07/792,512 patent/US5234544A/en not_active Expired - Fee Related
-
1992
- 1992-11-06 ES ES92119032T patent/ES2060552T3/es not_active Expired - Lifetime
- 1992-11-06 EP EP19920119032 patent/EP0542147B1/de not_active Expired - Lifetime
- 1992-11-06 DE DE1992119032 patent/DE542147T1/de active Pending
- 1992-11-06 DE DE1992617164 patent/DE69217164T2/de not_active Expired - Fee Related
- 1992-11-06 AT AT92119032T patent/ATE148510T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ES2060552T1 (es) | 1994-12-01 |
EP0542147B1 (de) | 1997-01-29 |
DE69217164T2 (de) | 1997-05-15 |
ATE148510T1 (de) | 1997-02-15 |
EP0542147A1 (de) | 1993-05-19 |
DE542147T1 (de) | 1994-12-08 |
US5234544A (en) | 1993-08-10 |
ES2060552T3 (es) | 1997-06-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |