FI68097C - Foerfarande foer blekning av en genom oxidering delignifierad cellulosamassa med ozon - Google Patents
Foerfarande foer blekning av en genom oxidering delignifierad cellulosamassa med ozon Download PDFInfo
- Publication number
- FI68097C FI68097C FI791056A FI791056A FI68097C FI 68097 C FI68097 C FI 68097C FI 791056 A FI791056 A FI 791056A FI 791056 A FI791056 A FI 791056A FI 68097 C FI68097 C FI 68097C
- Authority
- FI
- Finland
- Prior art keywords
- ozone
- peroxide
- pulp
- bleaching
- treatment
- 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO781190A NO144711C (no) | 1978-04-04 | 1978-04-04 | Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon |
NO781190 | 1978-04-04 |
Publications (3)
Publication Number | Publication Date |
---|---|
FI791056A FI791056A (fi) | 1979-10-05 |
FI68097B FI68097B (fi) | 1985-03-29 |
FI68097C true FI68097C (fi) | 1985-07-10 |
Family
ID=19884138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI791056A FI68097C (fi) | 1978-04-04 | 1979-03-29 | Foerfarande foer blekning av en genom oxidering delignifierad cellulosamassa med ozon |
Country Status (5)
Country | Link |
---|---|
US (1) | US4450044A (no) |
CA (1) | CA1119360A (no) |
FI (1) | FI68097C (no) |
NO (1) | NO144711C (no) |
SE (1) | SE439508B (no) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE452346C (sv) * | 1982-12-17 | 1990-03-26 | Sunds Defibrator | Foerfarande foer peroxidblekning av lignocellulosahaltigt material i tvaa steg |
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 |
US5525195A (en) * | 1989-02-15 | 1996-06-11 | Union Camp Patent Holding, Inc. | Process for high consistency delignification using a low consistency alkali pretreatment |
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 |
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 |
US5181989A (en) * | 1990-10-26 | 1993-01-26 | Union Camp Patent Holdings, Inc. | Reactor for bleaching high consistency pulp with ozone |
US5472572A (en) * | 1990-10-26 | 1995-12-05 | Union Camp Patent Holding, Inc. | Reactor for bleaching high consistency pulp with ozone |
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 |
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 |
US5188708A (en) * | 1989-02-15 | 1993-02-23 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification followed by ozone relignification |
EP0411921B1 (en) * | 1989-08-02 | 1995-01-18 | Canon Kabushiki Kaisha | Image processing apparatus |
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 |
US5441603A (en) * | 1990-05-17 | 1995-08-15 | Union Camp Patent Holding, Inc. | Method for chelation of pulp prior to ozone delignification |
US5520783A (en) * | 1990-10-26 | 1996-05-28 | Union Camp Patent Holding, Inc. | Apparatus for bleaching high consistency pulp with ozone |
US5174861A (en) * | 1990-10-26 | 1992-12-29 | Union Camp Patent Holdings, Inc. | Method of bleaching high consistency pulp with ozone |
SE468355B (sv) * | 1991-04-30 | 1992-12-21 | Eka Nobel Ab | Blekning av kemisk massa genom behandling med komplexbildare och ozon |
AT400153B (de) * | 1991-05-02 | 1995-10-25 | Voest Alpine Ind Anlagen | Verfahren zum bleichen von xylan- und lignocellulosehältigen materialien |
DE69221385T2 (de) * | 1991-05-24 | 1997-12-11 | Union Camp Patent Holding, Inc., Wilmington, Del. | Zweistufiger Reaktor zum Bleichen von Zellstoff und Verfahren zum Bleichen mit Ozon |
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 |
US6039837A (en) * | 1991-09-17 | 2000-03-21 | Mo Och Domsjo Aktiebolag | Method of bleaching pulp with ozone wherein the acidity is maintained with an acid solution prepared by electrolysis or electrodialysis |
SE500053C2 (sv) * | 1991-09-17 | 1994-03-28 | Mo Och Domsjoe Ab | Ozonblekning varvid massan surgöres med genom elektrolys framställd svavelsyra |
BE1006056A3 (fr) * | 1992-07-06 | 1994-05-03 | Solvay Interox | Procede pour le blanchiment d'une pate a papier chimique. |
AU5104593A (en) * | 1992-10-23 | 1994-05-24 | Macmillan Bloedel Limited | Improved ozone bleaching |
FI93232C (fi) * | 1993-03-03 | 1995-03-10 | Ahlstroem Oy | Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla |
US6010594A (en) * | 1993-03-03 | 2000-01-04 | Ahlstrom Machinery Corporation | Method of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stage |
US5411635A (en) * | 1993-03-22 | 1995-05-02 | The Research Foundation Of State University Of New York | Ozone/peroxymonosulfate process for delignifying a lignocellulosic material |
DE69408065T2 (de) * | 1993-04-06 | 1998-06-10 | L'air Liquide, S.A. Pour L'etude Et L'exploitation Des Procedes Georges Claude, Paris | Bleichen von wiederverwendetem zellstoff mittels ozone und wasserstoffperoxyd |
SE501253C2 (sv) * | 1993-06-08 | 1994-12-19 | Kvaerner Pulping Tech | Klorfri blekning av kemisk pappersmassa |
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 |
US5688368A (en) * | 1993-12-10 | 1997-11-18 | Beloit Technologies, Inc. | Method for cooling and ozone bleaching wood pulp |
US6210527B1 (en) | 1994-03-14 | 2001-04-03 | The Boc Group, Inc. | Pulp bleaching method wherein an ozone bleaching waste stream is scrubbed to form an oxygen containing stream |
US5770010A (en) * | 1995-04-20 | 1998-06-23 | R-J Holding Company | Pulping process employing nascent oxygen |
US20030131958A1 (en) * | 2001-11-30 | 2003-07-17 | Thomas Jaschinski | Use of ozone for increasing the wet strength of paper and nonwoven |
EP1375734A1 (en) * | 2002-06-17 | 2004-01-02 | SCA Hygiene Products GmbH | Bleached, strong sulfite chemical pulp, a process for the production thereof and products derived therefrom |
US7297225B2 (en) * | 2004-06-22 | 2007-11-20 | Georgia-Pacific Consumer Products Lp | Process for high temperature peroxide bleaching of pulp with cool discharge |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE373395B (sv) * | 1972-12-19 | 1975-02-03 | Mo Och Domsjoe Ab | Forfarande for framstellning av cellulosamassa med hog ljushet genom uppslutning av ved med syrgas under tryck i nervaro av en kokvetska forsatt med basiska neutralisationsmedel |
US3966542A (en) * | 1974-09-20 | 1976-06-29 | General Signal Corporation | Multi-stage bleaching of pulp using successively lower power levels |
NO137651C (no) * | 1975-10-31 | 1978-03-29 | Myrens Verksted As | Fremgangsmaate og apparat til kontinuerlig behandling av findelt fibermateriale eller celluloseholdig masse med gass uten overtrykk. |
-
1978
- 1978-04-04 NO NO781190A patent/NO144711C/no unknown
-
1979
- 1979-03-29 FI FI791056A patent/FI68097C/fi not_active IP Right Cessation
- 1979-04-02 SE SE7902901A patent/SE439508B/sv not_active IP Right Cessation
- 1979-04-03 CA CA000324788A patent/CA1119360A/en not_active Expired
-
1982
- 1982-07-19 US US06/400,115 patent/US4450044A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FI68097B (fi) | 1985-03-29 |
NO144711B (no) | 1981-07-13 |
US4450044A (en) | 1984-05-22 |
NO144711C (no) | 1981-10-21 |
NO781190L (no) | 1979-10-05 |
CA1119360A (en) | 1982-03-09 |
FI791056A (fi) | 1979-10-05 |
SE7902901L (sv) | 1979-10-05 |
SE439508B (sv) | 1985-06-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FI68097C (fi) | Foerfarande foer blekning av en genom oxidering delignifierad cellulosamassa med ozon | |
JP2898090B2 (ja) | 二酸化塩素/塩素の塩素化パルプのオゾン処理 | |
EP0483163B1 (en) | Environmentally improved process for bleaching lignocellulosic materials | |
CA1154205A (en) | Brightness improvement of ozone bleached pulps | |
EP0383999B1 (en) | Procedure for the bleaching of pulp | |
EP0395792A2 (en) | Procedure for the bleaching of pulp | |
EP0513140B1 (en) | A process for the bleaching of chemical pulp | |
KR930002072B1 (ko) | 과산화수소 강화된 산소 탈리그닌화 방법 | |
PT99243B (pt) | Processo para a preservacao das caracteristicas de resistencia macanica das pastas de papel quimicas | |
US6042690A (en) | Method for the bleaching of pulp in a D2D sequence wherein the effluent contains reduced colored matter | |
CA2118463A1 (en) | Method of producing sodium hydroxide from white liquor | |
EP0902120A1 (en) | Process for bleaching a paper pulp with ozone and chlorine dioxide | |
PT96816B (pt) | Processo de branqueamento de pasta de papel | |
KR102531578B1 (ko) | 제지용 펄프의 표백 방법 | |
CA2089041C (en) | Bleaching pulp with chloric acid | |
SE502135C2 (sv) | Bleksekvens för kemisk massa innefattande ett sulfonerande bleksteg | |
AU642971B2 (en) | Bleaching of paper pulp | |
EP0863251A1 (en) | Process for producing bleached pulp | |
RU2123552C1 (ru) | Способ отбелки целлюлозы | |
KR100247570B1 (ko) | 고백색도 재생펄프의 제조방법 | |
JPH07173784A (ja) | 化学パルプの非塩素漂白方法 | |
CA2089477A1 (en) | Bleaching chemical pulp using chlorine/chlorine dioxide then ozone | |
KR19990023814A (ko) | 오존을 사용한 염소 원소 비함유 표백 방법 | |
JPH0149836B2 (no) | ||
JPH0819631B2 (ja) | リグノセルロース物質の漂白方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: MYRENS VERKSTED A/S |