SE9500826D0 - Massablekningsförfarande - Google Patents
MassablekningsförfarandeInfo
- Publication number
- SE9500826D0 SE9500826D0 SE9500826A SE9500826A SE9500826D0 SE 9500826 D0 SE9500826 D0 SE 9500826D0 SE 9500826 A SE9500826 A SE 9500826A SE 9500826 A SE9500826 A SE 9500826A SE 9500826 D0 SE9500826 D0 SE 9500826D0
- Authority
- SE
- Sweden
- Prior art keywords
- liquor
- pulp
- white liquor
- ozone
- wood pulp
- Prior art date
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
- D21C9/10—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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/213,290 US6210527B1 (en) | 1994-03-14 | 1994-03-14 | Pulp bleaching method wherein an ozone bleaching waste stream is scrubbed to form an oxygen containing stream |
Publications (2)
Publication Number | Publication Date |
---|---|
SE9500826D0 true SE9500826D0 (sv) | 1995-03-07 |
SE9500826L SE9500826L (sv) | 1995-09-15 |
Family
ID=22794495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9500826A SE9500826L (sv) | 1994-03-14 | 1995-03-07 | Massablekningsförfarande |
Country Status (6)
Country | Link |
---|---|
US (1) | US6210527B1 (sv) |
AU (1) | AU685578B2 (sv) |
FI (1) | FI951166A (sv) |
NO (1) | NO950954L (sv) |
SE (1) | SE9500826L (sv) |
ZA (1) | ZA951344B (sv) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030044344A1 (en) * | 2001-06-15 | 2003-03-06 | Saucedo Victor M. | Method for controlling polysulfide production |
FI122812B (sv) * | 2007-06-15 | 2012-07-13 | Andritz Oy | Förfarande för behandling av vätskeströmmar i en cellulosafabrik |
FI122246B (sv) * | 2007-06-15 | 2011-10-31 | Andritz Oy | Förfarande för behandling av massa på en massafabrik |
FI20080008L (sv) * | 2008-01-08 | 2009-07-09 | Andritz Oy | Behandling av ozonhaltig gas i samband med blekning av massa |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE343092B (sv) * | 1970-06-22 | 1972-02-28 | Mo Och Domsjoe Ab | |
US3860479A (en) | 1971-06-18 | 1975-01-14 | Union Camp Corp | Catalytic oxidation of alkaline pulping liquor |
US4131508A (en) | 1973-03-12 | 1978-12-26 | Kamyr Inc. | Recovery system for oxygen bleaching of pulp |
AU473185B2 (en) | 1973-07-25 | 1976-06-17 | Mooch Domsjo Aktiebolag | A method for producing oxidized white liquor |
SE379069B (sv) | 1973-08-27 | 1975-09-22 | Kamyr Ab | |
SE381897C (sv) | 1973-11-23 | 1977-05-12 | Skogegarnas Ind Ab | Sett for satsvis alkalisk massakokning i kombination med kontinuerlig syredelignifiering |
US4172006A (en) | 1976-08-26 | 1979-10-23 | Weyerhaeuser Company | Method of delignifying wood chips with oxygen by adding cooking liquor under pressure |
US4161421A (en) | 1977-09-13 | 1979-07-17 | Kamyr, Inc. | Method and apparatus for continuous oxygen bleaching of cellulosic pulp |
NO144711C (no) | 1978-04-04 | 1981-10-21 | Myrens Verksted As | Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon |
US4372812A (en) | 1978-04-07 | 1983-02-08 | International Paper Company | Chlorine free process for bleaching lignocellulosic pulp |
US4619733A (en) | 1983-11-30 | 1986-10-28 | Kooi Boon Lam | Pollution free pulping process using recycled wash effluent from multiple bleach stages to remove black liquor and recovering sodium hydroxide from the black liquor |
AT380496B (de) | 1984-06-27 | 1986-05-26 | Steyrermuehl Papier | Verfahren und reaktor zur delignifizierung von zellstoff mit sauerstoff |
JPS62247812A (ja) | 1986-04-18 | 1987-10-28 | Chiyoda Chem Eng & Constr Co Ltd | 加圧式上向流深層濾過方法及びそれに用いる濾過器 |
SE465730C (sv) | 1988-03-17 | 2001-02-16 | Kvaerner Pulping Tech | Sätt vid delignifiering av fiberhaltig cellulosamassa |
US4902381A (en) | 1988-12-09 | 1990-02-20 | Kamyr, Inc. | Method of bleaching pulp with ozone-chlorine mixtures |
US5179021A (en) | 1989-02-10 | 1993-01-12 | Gil Inc. (Now Ici Canada Inc.) | Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment |
AT395028B (de) | 1990-02-07 | 1992-08-25 | Chemiefaser Lenzing Ag | Verfahren zum chlorfreien bleichen von kunstfaserzellstoff |
US5164043A (en) | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
US6126781A (en) * | 1991-08-01 | 2000-10-03 | Union Camp Patent Holding, Inc. | Process for conditioning ozone gas recycle stream in ozone pulp bleaching |
-
1994
- 1994-03-14 US US08/213,290 patent/US6210527B1/en not_active Expired - Fee Related
-
1995
- 1995-02-17 ZA ZA951344A patent/ZA951344B/xx unknown
- 1995-03-07 SE SE9500826A patent/SE9500826L/sv not_active IP Right Cessation
- 1995-03-10 AU AU14747/95A patent/AU685578B2/en not_active Ceased
- 1995-03-13 FI FI951166A patent/FI951166A/sv unknown
- 1995-03-13 NO NO950954A patent/NO950954L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NO950954D0 (no) | 1995-03-13 |
FI951166A0 (sv) | 1995-03-13 |
NO950954L (no) | 1995-09-15 |
AU1474795A (en) | 1995-10-05 |
SE9500826L (sv) | 1995-09-15 |
FI951166A (sv) | 1995-09-15 |
ZA951344B (en) | 1996-01-15 |
AU685578B2 (en) | 1998-01-22 |
US6210527B1 (en) | 2001-04-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |