ATE111989T1 - Verfahren zum bleichen von cellulosehältigen materialien sowie anlage zur durchführung des verfahrens. - Google Patents
Verfahren zum bleichen von cellulosehältigen materialien sowie anlage zur durchführung des verfahrens.Info
- Publication number
- ATE111989T1 ATE111989T1 AT90890325T AT90890325T ATE111989T1 AT E111989 T1 ATE111989 T1 AT E111989T1 AT 90890325 T AT90890325 T AT 90890325T AT 90890325 T AT90890325 T AT 90890325T AT E111989 T1 ATE111989 T1 AT E111989T1
- Authority
- AT
- Austria
- Prior art keywords
- aqueous medium
- ozone
- plant
- carrying
- cellulosic materials
- Prior art date
Links
- 239000000463 material Substances 0.000 title abstract 4
- 238000004061 bleaching Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract 3
- 239000012736 aqueous medium Substances 0.000 abstract 3
- 229920002678 cellulose Polymers 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- 239000002609 medium Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- General Preparation And Processing Of Foods (AREA)
- Detergent Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0292789A AT393701B (de) | 1989-12-22 | 1989-12-22 | Verfahren zum bleichen von cellulosehaeltigen materialien sowie anlage zur durchfuehrung des verfahrens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE111989T1 true ATE111989T1 (de) | 1994-10-15 |
Family
ID=3542503
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT0292789A AT393701B (de) | 1989-12-22 | 1989-12-22 | Verfahren zum bleichen von cellulosehaeltigen materialien sowie anlage zur durchfuehrung des verfahrens |
| AT90890325T ATE111989T1 (de) | 1989-12-22 | 1990-12-17 | Verfahren zum bleichen von cellulosehältigen materialien sowie anlage zur durchführung des verfahrens. |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT0292789A AT393701B (de) | 1989-12-22 | 1989-12-22 | Verfahren zum bleichen von cellulosehaeltigen materialien sowie anlage zur durchfuehrung des verfahrens |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5133946A (de) |
| EP (1) | EP0434662B1 (de) |
| AT (2) | AT393701B (de) |
| DE (1) | DE59007258D1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT395445B (de) * | 1991-05-02 | 1992-12-28 | Voest Alpine Ind Anlagen | Verfahren zum bleichen von cellulosehaeltigem material |
| NO912449L (no) * | 1991-06-24 | 1992-12-28 | Norske Stats Oljeselskap | Flyttbar plattform til havs. |
| ZA924351B (en) * | 1991-06-27 | 1993-03-31 | Ahlstroem Oy | Ozone bleaching process |
| AT400154B (de) * | 1991-12-23 | 1995-10-25 | Voest Alpine Ind Anlagen | Verfahren zum bleichen cellulosehältiger materialien |
| US6231718B1 (en) * | 1992-02-28 | 2001-05-15 | International Paper Company | Two phase ozone and oxygen pulp treatment |
| US5364505A (en) * | 1992-12-07 | 1994-11-15 | Kamyr, Inc. | Pressurized ozone pulp delignification reactor and a compressor for supplying ozone to the reactor |
| SE9301960L (sv) * | 1993-06-08 | 1994-07-25 | Kvaerner Pulping Tech | Blekning av kemisk massa med peroxid vid övertryck |
| US5645687A (en) * | 1995-07-10 | 1997-07-08 | Champion International Corporation | Process for manufacturing bleached pulp with reduced chloride production |
| US7892502B2 (en) * | 2005-07-07 | 2011-02-22 | Mks Instruments, Inc. | Ozone system for multi-chamber tools |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2812861A (en) * | 1954-02-09 | 1957-11-12 | Maryland Lab Inc | Means for ozone treatment of liquids |
| US2864757A (en) * | 1956-02-17 | 1958-12-16 | Air Reduction | Ozone concentration and dilution |
| FR1441787A (fr) * | 1965-04-30 | 1966-06-10 | Progil | Procédé de blanchiment des pâtes à papier |
| CA902861A (en) * | 1969-11-27 | 1972-06-20 | Pulp And Paper Research Institute Of Canada | Bleaching of cellulosic pulp |
| US4089737A (en) * | 1974-02-18 | 1978-05-16 | Toyo Pulp Company, Ltd. | Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein |
| US3951733A (en) * | 1974-11-06 | 1976-04-20 | International Paper Company | Delignification and bleaching of wood pulp with oxygen |
| US4310384A (en) * | 1979-01-11 | 1982-01-12 | Weyerhaeuser Company | Reducing chemical transfer between treatment stages |
| JPS6048444B2 (ja) * | 1981-06-05 | 1985-10-28 | 三菱電機株式会社 | 間欠オゾン供給装置 |
| AT380496B (de) * | 1984-06-27 | 1986-05-26 | Steyrermuehl Papier | Verfahren und reaktor zur delignifizierung von zellstoff mit sauerstoff |
| US4816229A (en) * | 1986-07-09 | 1989-03-28 | American Ozone Technology, Inc. | Ozone apparatus |
| US4902381A (en) * | 1988-12-09 | 1990-02-20 | Kamyr, Inc. | Method of bleaching pulp with ozone-chlorine mixtures |
-
1989
- 1989-12-22 AT AT0292789A patent/AT393701B/de not_active IP Right Cessation
-
1990
- 1990-12-12 US US07/626,012 patent/US5133946A/en not_active Expired - Fee Related
- 1990-12-17 EP EP90890325A patent/EP0434662B1/de not_active Expired - Lifetime
- 1990-12-17 DE DE59007258T patent/DE59007258D1/de not_active Expired - Fee Related
- 1990-12-17 AT AT90890325T patent/ATE111989T1/de active
Also Published As
| Publication number | Publication date |
|---|---|
| DE59007258D1 (de) | 1994-10-27 |
| AT393701B (de) | 1991-12-10 |
| EP0434662B1 (de) | 1994-09-21 |
| ATA292789A (de) | 1991-05-15 |
| EP0434662A1 (de) | 1991-06-26 |
| US5133946A (en) | 1992-07-28 |
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