FI69135C - Foerfarande foer syrgasblekning av cellulosamassa - Google Patents
Foerfarande foer syrgasblekning av cellulosamassa Download PDFInfo
- Publication number
- FI69135C FI69135C FI811738A FI811738A FI69135C FI 69135 C FI69135 C FI 69135C FI 811738 A FI811738 A FI 811738A FI 811738 A FI811738 A FI 811738A FI 69135 C FI69135 C FI 69135C
- Authority
- FI
- Finland
- Prior art keywords
- pulp
- fed
- reaction
- oxygen
- activation
- 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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8004184 | 1980-06-05 | ||
SE8004184A SE421938B (sv) | 1980-06-05 | 1980-06-05 | Forfarande for behandling av cellulosamassa med kveveoxider fore syrgasblekning |
Publications (3)
Publication Number | Publication Date |
---|---|
FI811738L FI811738L (fi) | 1981-12-06 |
FI69135B FI69135B (fi) | 1985-08-30 |
FI69135C true FI69135C (fi) | 1985-12-10 |
Family
ID=20341137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI811738A FI69135C (fi) | 1980-06-05 | 1981-06-04 | Foerfarande foer syrgasblekning av cellulosamassa |
Country Status (11)
Country | Link |
---|---|
US (1) | US4439271A (no) |
JP (1) | JPS5725490A (no) |
AT (1) | AT375693B (no) |
AU (1) | AU547231B2 (no) |
CA (1) | CA1167207A (no) |
DE (1) | DE3122297C2 (no) |
FI (1) | FI69135C (no) |
FR (1) | FR2483972A1 (no) |
NO (1) | NO156795C (no) |
NZ (1) | NZ197165A (no) |
SE (1) | SE421938B (no) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE448006B (sv) * | 1981-09-21 | 1987-01-12 | Mo Och Domsjoe Ab | Forfarande for blekning av cellulosamassa innefattande ett aktiveringssteg med kveveoxider |
DE3213856C2 (de) * | 1982-04-15 | 1984-05-10 | Mo och Domsjö AB, 89191 Örnsköldsvik | Verfahren zum Delignifizieren eines chemisch hergestellten Cellulosehalbstoffes |
SE434283B (sv) * | 1982-12-01 | 1984-07-16 | Mo Och Domsjoe Ab | Forfarande for delignifiering av cellulosamassa med kveveoxider och syrgas |
SE451149B (sv) * | 1983-01-26 | 1987-09-07 | Mo Och Domsjoe Ab | Apparatur for kontinuerlig behandling av vatteninnehallande lignocellulosamaterial med kveveoxid och syre |
SE452176B (sv) * | 1984-03-28 | 1987-11-16 | Mo Och Domsjoe Ab | Forfarande for framstellning av kveveoxider ur avlutar fran cellulosamassatillverkning |
SE451023B (sv) * | 1985-12-10 | 1987-08-24 | Mo Och Domsjoe Ab | Forfarande vid aktivering av lignocellulosamaterial med kvevedioxid innehallande gas |
SE460543B (sv) * | 1987-09-28 | 1989-10-23 | Mo Och Domsjoe Ab | Foerfarande vid aktivering av lignocellulosamaterial med kvaevedioxid innehaallande gas |
US5211811A (en) * | 1989-02-15 | 1993-05-18 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification |
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 |
US5217574A (en) * | 1989-02-15 | 1993-06-08 | Union Camp Patent Holdings Inc. | Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp |
US5409570A (en) * | 1989-02-15 | 1995-04-25 | Union Camp Patent Holding, Inc. | Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone |
US5188708A (en) * | 1989-02-15 | 1993-02-23 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification followed by ozone relignification |
US5525195A (en) * | 1989-02-15 | 1996-06-11 | Union Camp Patent Holding, Inc. | Process for high consistency delignification using a low consistency alkali pretreatment |
US5173153A (en) * | 1991-01-03 | 1992-12-22 | Union Camp Patent Holding, Inc. | Process for enhanced oxygen delignification using high consistency and a split alkali addition |
US5441603A (en) * | 1990-05-17 | 1995-08-15 | Union Camp Patent Holding, Inc. | Method for chelation of pulp prior to ozone delignification |
US5164043A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
US5164044A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
DE4203923A1 (de) * | 1992-02-11 | 1993-08-12 | Henkel Kgaa | Verfahren zur herstellung von polycarboxylaten auf polysaccharid-basis |
US5554259A (en) * | 1993-10-01 | 1996-09-10 | Union Camp Patent Holdings, Inc. | Reduction of salt scale precipitation by control of process stream Ph and salt concentration |
WO2004106624A1 (en) * | 2003-06-03 | 2004-12-09 | Pacific Pulp Resources Inc. | Method for producing pulp and lignin |
PT2462277E (pt) * | 2009-08-05 | 2015-01-02 | Int Paper Co | Processo para a aplicação de composição contendo um metal trivalente catiónica e desligante e uma folha de polpa de felpa feita a partir da mesma |
MY162376A (en) * | 2009-08-05 | 2017-06-15 | Shell Int Research | Method for monitoring a well |
CN104947509B (zh) | 2009-08-05 | 2017-11-03 | 国际纸业公司 | 干燥绒毛浆片材添加剂 |
WO2012012316A1 (en) | 2010-07-20 | 2012-01-26 | International Paper Company | Composition containing a multivalent cationic metal and amine-containing anti-static agent and methods of making and using |
WO2012012633A1 (en) | 2010-07-22 | 2012-01-26 | International Paper Company | Process for preparing fluff pulp sheet with cationic dye and debonder surfactant and fluff pulp sheet made from same |
KR102656393B1 (ko) * | 2017-09-11 | 2024-04-12 | 솔레니스 테크놀러지스, 엘.피. | 화학 목재 펄프의 향상된 산소 탈리그닌화 방법 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU419593A1 (ru) * | 1971-11-30 | 1974-03-15 | Г. Л. Аким , В. М. Никитин | Способ отбелки целлюлозы |
FR2158873A5 (en) * | 1972-10-09 | 1973-06-15 | Bourit Jean Pierre | Bleaching of wood cellulose - using nitrogen oxides |
US4076579A (en) * | 1973-08-06 | 1978-02-28 | The Regents Of The University Of California | Pulping of lignocellulosic material by sequential treatment thereof with nitric oxide and oxygen |
US4087318A (en) * | 1974-03-14 | 1978-05-02 | Mo Och Domsjo Aktiebolag | Oxygen-alkali delignification of lignocellulosic material in the presence of a manganese compound |
GB1505070A (en) * | 1974-06-11 | 1978-03-22 | Canadian Ind | Process for bleaching of lignocellulosic material |
CA1070909A (en) * | 1976-05-04 | 1980-02-05 | Canadian Industries Limited | Nitrogen dioxide-oxygen delignification |
-
1980
- 1980-06-05 SE SE8004184A patent/SE421938B/sv not_active IP Right Cessation
-
1981
- 1981-05-21 NZ NZ197165A patent/NZ197165A/xx unknown
- 1981-06-03 JP JP8555281A patent/JPS5725490A/ja active Granted
- 1981-06-04 DE DE3122297A patent/DE3122297C2/de not_active Expired
- 1981-06-04 NO NO811906A patent/NO156795C/no unknown
- 1981-06-04 AU AU71364/81A patent/AU547231B2/en not_active Ceased
- 1981-06-04 FI FI811738A patent/FI69135C/fi not_active IP Right Cessation
- 1981-06-04 US US06/270,438 patent/US4439271A/en not_active Expired - Lifetime
- 1981-06-04 AT AT0251581A patent/AT375693B/de not_active IP Right Cessation
- 1981-06-05 FR FR8111138A patent/FR2483972A1/fr active Granted
- 1981-06-05 CA CA000379102A patent/CA1167207A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US4439271A (en) | 1984-03-27 |
AU547231B2 (en) | 1985-10-10 |
NO811906L (no) | 1981-12-07 |
DE3122297A1 (de) | 1982-04-01 |
JPS6350465B2 (no) | 1988-10-07 |
NZ197165A (en) | 1983-09-30 |
FI69135B (fi) | 1985-08-30 |
DE3122297C2 (de) | 1984-04-12 |
ATA251581A (de) | 1984-01-15 |
FR2483972B1 (no) | 1983-10-28 |
FR2483972A1 (fr) | 1981-12-11 |
AU7136481A (en) | 1981-12-10 |
CA1167207A (en) | 1984-05-15 |
AT375693B (de) | 1984-08-27 |
JPS5725490A (en) | 1982-02-10 |
SE8004184L (no) | 1981-12-06 |
NO156795B (no) | 1987-08-17 |
SE421938B (sv) | 1982-02-08 |
FI811738L (fi) | 1981-12-06 |
NO156795C (no) | 1987-11-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: MO OCH DOMSJOE AKTIEBOLAG |