FI811195L - Foerfarande vid syrgasblekning av cellulosamassa - Google Patents

Foerfarande vid syrgasblekning av cellulosamassa

Info

Publication number
FI811195L
FI811195L FI811195A FI811195A FI811195L FI 811195 L FI811195 L FI 811195L FI 811195 A FI811195 A FI 811195A FI 811195 A FI811195 A FI 811195A FI 811195 L FI811195 L FI 811195L
Authority
FI
Finland
Prior art keywords
syrgasblekning
cellulosamassa
foerfarande vid
foerfarande
vid
Prior art date
Application number
FI811195A
Other languages
English (en)
Other versions
FI69134B (fi
FI69134C (fi
Inventor
Hans Olof Samuelson
Kjell Evert Abrahamsson
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
Publication of FI811195L publication Critical patent/FI811195L/fi
Publication of FI69134B publication Critical patent/FI69134B/fi
Application granted granted Critical
Publication of FI69134C publication Critical patent/FI69134C/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
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • 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
    • D21C9/1068—Bleaching ; Apparatus therefor with O2

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Cosmetics (AREA)
FI811195A 1980-05-07 1981-04-16 Foerfarande vid syrgasblekning av cellulosamassa FI69134C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8003407A SE434284B (sv) 1980-05-07 1980-05-07 Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores
SE8003407 1980-05-07

Publications (3)

Publication Number Publication Date
FI811195L true FI811195L (fi) 1981-11-08
FI69134B FI69134B (fi) 1985-08-30
FI69134C FI69134C (fi) 1985-12-10

Family

ID=20340912

Family Applications (1)

Application Number Title Priority Date Filing Date
FI811195A FI69134C (fi) 1980-05-07 1981-04-16 Foerfarande vid syrgasblekning av cellulosamassa

Country Status (9)

Country Link
US (1) US4372811A (fi)
JP (1) JPS56169889A (fi)
AU (1) AU539178B2 (fi)
CA (1) CA1167206A (fi)
FI (1) FI69134C (fi)
FR (1) FR2482146A1 (fi)
NO (1) NO156250C (fi)
NZ (1) NZ196664A (fi)
SE (1) SE434284B (fi)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3923728A1 (de) * 1989-07-18 1991-01-24 Degussa Verfahren zur stabilisierung der viskositaet von zellstoffen
US6331354B1 (en) 1996-08-23 2001-12-18 Weyerhaeuser Company Alkaline pulp having low average degree of polymerization values and method of producing the same
US6605350B1 (en) * 1996-08-23 2003-08-12 Weyerhaeuser Company Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same
EP0881326B1 (de) * 1997-05-30 2001-10-17 Papierfabrik Schoeller & Hoesch Gmbh & Co. Kg Verfahren zur Herstellung von gebleichten Spezialzellstoffen
US6685856B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell products method
US6686039B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps
US6686040B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell products
US6797113B2 (en) * 1999-02-24 2004-09-28 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps method
DE10163303B4 (de) * 2001-12-21 2004-04-01 Rhodia Acetow Gmbh Verfahren zur Verbesserung der Farbzahl von Celluloseestern
EP2534296A1 (en) 2010-02-12 2012-12-19 Dequest AG Method for pulp bleaching
CN102381981B (zh) * 2011-09-09 2013-12-04 南京理工大学 一种汽油用抗氧剂的合成方法
WO2019051013A1 (en) 2017-09-11 2019-03-14 Solenis Technologies, L.P. METHOD FOR IMPROVING OXYGEN DELIGNIFICATION OF WOOD CHEMICAL PULPES
US11033867B2 (en) 2017-09-27 2021-06-15 Sustainable Fiber Technologies, LLC Aqueous lignin and hemicellulose dispersion
US11066588B2 (en) 2017-11-21 2021-07-20 Sustainable Fiber Technologies, LLC Deicing composition comprising lignocellulosic byproducts
US11091697B2 (en) 2017-11-29 2021-08-17 Sustainable Fiber Technologies, LLC Dust suppressant and soil stabilization composition comprising lignocellulosic byproducts
US11572474B2 (en) 2020-05-22 2023-02-07 Sustainable Fiber Technologies, LLC Compositions comprising lignocellulosic byproducts for tire ballasts and associated methods

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478379A (en) * 1948-07-30 1949-08-09 Hercules Powder Co Ltd Cellulose bleaching
SE360128C (sv) * 1970-08-25 1983-10-31 Mo Och Domsjoe Ab Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
FI52877B (fi) * 1972-11-16 1977-08-31 Ahlstroem Oy
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
GB1505529A (en) * 1974-06-14 1978-03-30 Mo Och Domsjoe Ab Method for the oxygen-gas delignification of lignocellulosic material and apparatus for carrying out the method
US4091749A (en) * 1975-01-02 1978-05-30 Macmillan Bloedel Limited Alkaline pulping of lignocellulosic material with amine pretreatment
JPS5228884A (en) * 1975-08-29 1977-03-04 Hitachi Ltd Semiconductor laser device
ZA773044B (en) * 1976-06-02 1978-04-26 Australian Paper Manufacturers Improvements in pulping processes
FR2426767A1 (fr) * 1978-05-26 1979-12-21 Monsanto Europe Sa Blanchiment de pate a papier
US4248663A (en) * 1978-07-05 1981-02-03 Pulp And Paper Research Institute Of Canada Pulping with an alkaline liquor containing a cyclic keto compound and an amino compound

Also Published As

Publication number Publication date
NO156250B (no) 1987-05-11
SE434284B (sv) 1984-07-16
CA1167206A (en) 1984-05-15
AU6902981A (en) 1981-11-12
FR2482146A1 (fr) 1981-11-13
FI69134B (fi) 1985-08-30
SE8003407L (sv) 1981-11-08
NO811525L (no) 1981-11-09
US4372811A (en) 1983-02-08
AU539178B2 (en) 1984-09-13
NO156250C (no) 1987-08-19
JPS56169889A (en) 1981-12-26
NZ196664A (en) 1983-06-14
FI69134C (fi) 1985-12-10
FR2482146B1 (fi) 1983-12-02

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: MO OCH DOMSJOE AKTIEBOLAG