FI59273C - Foerfarande foer blekning av cellulosamassa - Google Patents

Foerfarande foer blekning av cellulosamassa Download PDF

Info

Publication number
FI59273C
FI59273C FI2335/71A FI233571A FI59273C FI 59273 C FI59273 C FI 59273C FI 2335/71 A FI2335/71 A FI 2335/71A FI 233571 A FI233571 A FI 233571A FI 59273 C FI59273 C FI 59273C
Authority
FI
Finland
Prior art keywords
bleaching
pulp
cooking
liquor
broth
Prior art date
Application number
FI2335/71A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI59273B (fi
Inventor
Hans Olof Samuelson
Ingemar Liss-Albin Croon
Original Assignee
Mo Och Domsjoe Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Application granted granted Critical
Publication of FI59273B publication Critical patent/FI59273B/fi
Publication of FI59273C publication Critical patent/FI59273C/fi

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
    • D21C9/1026—Other features in bleaching processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI2335/71A 1970-08-25 1971-08-20 Foerfarande foer blekning av cellulosamassa FI59273C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1153770 1970-08-25
SE7011537A SE360128C (sv) 1970-08-25 1970-08-25 Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali

Publications (2)

Publication Number Publication Date
FI59273B FI59273B (fi) 1981-03-31
FI59273C true FI59273C (fi) 1981-07-10

Family

ID=20294147

Family Applications (1)

Application Number Title Priority Date Filing Date
FI2335/71A FI59273C (fi) 1970-08-25 1971-08-20 Foerfarande foer blekning av cellulosamassa

Country Status (12)

Country Link
US (1) US3759783A (de)
JP (1) JPS5025044B1 (de)
AT (1) AT309978B (de)
AU (1) AU462469B2 (de)
BR (1) BR7105531D0 (de)
CA (1) CA964009A (de)
DE (1) DE2141757C3 (de)
FI (1) FI59273C (de)
FR (1) FR2105990A5 (de)
NO (1) NO132361C (de)
SE (1) SE360128C (de)
ZA (1) ZA715394B (de)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449828A (en) * 1973-04-26 1976-09-15 Canadian Ind Oxygen pulping process
FI48764C (fi) * 1973-05-30 1977-07-26 Ahlstroem Oy Menetelmä ja laite selluloosamassan valkaisemiseksi molekylaarisella h apella.
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
SE393138B (sv) * 1974-03-14 1977-05-02 Mo Och Domsjoe Ab Forfarande for blekning av cellulosa med en syre innehallande gas i nervaro av natriumbikarbonat
SE394466C (sv) * 1974-05-16 1986-06-23 Mannbro Systems Handelsbolag Sett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tva eller flera steg, varav det sista med syrgas
FR2282500A1 (fr) * 1974-08-20 1976-03-19 Grp Europ De Cellulose Procede de fabrication de pate a papier
SE413684C (sv) * 1974-09-23 1987-05-18 Mo Och Domsjoe Ab Forfarande for framstellning av cellulosamassa i utbytesomradet 65-95 %
SE385027B (sv) * 1974-09-27 1976-05-31 Mo Och Domsjoe Ab Forfarande for att frilegga cellulosafibrer
US4119486A (en) * 1975-08-14 1978-10-10 Westvaco Corporation Process for bleaching wood pulp with ozone in the presence of a cationic surfactant
LU74434A1 (de) * 1976-02-25 1977-09-12
US4338158A (en) * 1976-04-09 1982-07-06 Weyerhaeuser Company Pulping in the presence of a protector
AU3102077A (en) * 1976-12-01 1979-06-07 New Zealand Dev Finance Treating lignocellulosic or cellulosic pulp
US4259149A (en) * 1978-05-03 1981-03-31 Hooker Chemicals & Plastics Corp. Method of reducing waste stream pollutants by the control and separation of waste contaminants from a multi-stage cellulosic bleaching sequence
SE413785B (sv) * 1978-09-22 1980-06-23 Mo Och Domsjoe Ab Forfarande for uppslutning av lignocellulosahaltiga material genom alkalisk kokning i nervaro av ett tillsatsemne av redoxtyp
US4248662A (en) * 1979-01-22 1981-02-03 The Black Clawson Company Oxygen pulping with recycled liquor
SE462919B (sv) * 1979-05-11 1990-09-17 Sunds Defibrator Ind Ab Saett att genomfoera alkaliextraktion av cellulosamassa i naervaro av syre
SE434284B (sv) * 1980-05-07 1984-07-16 Mo Och Domsjoe Ab Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores
SE441192B (sv) * 1980-05-27 1985-09-16 Mo Och Domsjoe Ab Forfarande for delignifiering av kemisk cellulosamassa med syrgas i nervaro av ett eller flera neutralisationsmedel
US4416727A (en) * 1982-01-11 1983-11-22 Air Products And Chemicals, Inc. Process for recovering fiber from wet-strength resin coated paper
DE3428352A1 (de) * 1984-08-01 1986-02-13 Degussa Ag, 6000 Frankfurt Verfahren zur delignifizierung und bleiche von zellstoffen
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
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
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
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
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
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
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
US6106667A (en) * 1992-02-21 2000-08-22 Ahlstrom Machinery Inc. Treatment of recycled bleach plant filtrates
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
EP0647466A3 (de) * 1993-10-08 1996-01-17 Akzo Nobel Nv Cellulosische Membranen.
SE9401771D0 (sv) * 1994-05-24 1994-05-24 Hans Olof Samuelson Process for removal of metal compounds in lignocellulosic pulp
US5770010A (en) * 1995-04-20 1998-06-23 R-J Holding Company Pulping process employing nascent oxygen
US6325892B1 (en) * 1998-09-23 2001-12-04 University Of New Brunswick Method of delignifying sulphite pulp with oxygen and borohydride
SE522161C2 (sv) * 1999-06-17 2004-01-20 Kvaerner Pulping Tech Förfarande och anordning för syrgasdelignifiering med förbättrad kappareduktion
RU2445414C2 (ru) * 2006-05-19 2012-03-20 Дзе Рисерч Фаундейшн Оф Стейт Юниверсити Оф Нью Йорк Способы карбонатной предварительной обработки и варки целлюлозного материала
FI20070126A0 (fi) * 2006-09-08 2007-02-13 Linde Ag Menetelmä hartsin poistamiseksi massasta ja hiilidioksidin tai (bi)karbonaatin käyttö tähän tarkoitukseen
US8303767B2 (en) * 2008-03-18 2012-11-06 The Research Foundation Of State University Of New York Methods of pretreating comminuted cellulosic material with carbonate-containing solutions

Also Published As

Publication number Publication date
NO132361B (de) 1975-07-21
NO132361C (de) 1977-06-02
FR2105990A5 (de) 1972-04-28
AU3232971A (en) 1973-02-15
AU462469B2 (en) 1975-06-26
SE360128B (de) 1973-09-17
SE360128C (sv) 1983-10-31
DE2141757A1 (de) 1972-03-16
DE2141757B2 (de) 1973-08-23
DE2141757C3 (de) 1979-06-21
JPS5025044B1 (de) 1975-08-20
CA964009A (en) 1975-03-11
US3759783A (en) 1973-09-18
ZA715394B (en) 1972-05-31
BR7105531D0 (pt) 1973-05-31
FI59273B (fi) 1981-03-31
AT309978B (de) 1973-09-10

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