FI813733L - Foerfarande foer delignifiering/blekning av cellulosamassa - Google Patents

Foerfarande foer delignifiering/blekning av cellulosamassa

Info

Publication number
FI813733L
FI813733L FI813733A FI813733A FI813733L FI 813733 L FI813733 L FI 813733L FI 813733 A FI813733 A FI 813733A FI 813733 A FI813733 A FI 813733A FI 813733 L FI813733 L FI 813733L
Authority
FI
Finland
Prior art keywords
cellulosamassa
blekning
foerfarande foer
delignifiering
foer delignifiering
Prior art date
Application number
FI813733A
Other languages
English (en)
Other versions
FI73020B (fi
FI73020C (fi
Inventor
Jonas Arne Ingvar Lindahl
John Rickard Bergstroem
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 FI813733L publication Critical patent/FI813733L/fi
Publication of FI73020B publication Critical patent/FI73020B/fi
Application granted granted Critical
Publication of FI73020C publication Critical patent/FI73020C/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
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/08—Chlorine-containing liquid regeneration

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI813733A 1980-11-27 1981-11-23 Foerfarande foer delignifiering/blekning av cellulosamassa. FI73020C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8008337A SE442881B (sv) 1980-11-27 1980-11-27 Forfarande for delignifiering/blekning av cellulosamassa med klordioxid
SE8008337 1980-11-27

Publications (3)

Publication Number Publication Date
FI813733L true FI813733L (fi) 1982-05-28
FI73020B FI73020B (fi) 1987-04-30
FI73020C FI73020C (fi) 1987-08-10

Family

ID=20342345

Family Applications (1)

Application Number Title Priority Date Filing Date
FI813733A FI73020C (fi) 1980-11-27 1981-11-23 Foerfarande foer delignifiering/blekning av cellulosamassa.

Country Status (6)

Country Link
US (1) US4537656A (fi)
JP (1) JPS57121691A (fi)
CA (1) CA1147909A (fi)
FI (1) FI73020C (fi)
NO (1) NO156906C (fi)
SE (1) SE442881B (fi)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662993A (en) * 1983-08-15 1987-05-05 Westvaco Corporation Bleach system for dissolving chlorine gas into a bleach filtrate
JPH01151991A (ja) * 1987-12-07 1989-06-14 Oji Paper Co Ltd 悪臭ドレーンの脱臭方法
JP2528727Y2 (ja) * 1990-12-18 1997-03-12 未来工業株式会社 管、ケーブル等の支持装置
JP2812056B2 (ja) * 1992-03-30 1998-10-15 王子製紙株式会社 リグノセルロース物質の漂白方法
US6315863B1 (en) * 1998-06-18 2001-11-13 Weyerhaeuser Company Chlorine dioxide pulp bleaching process having reduced barium scaling by recycling post-chlorination waste filtrate
US20070133346A1 (en) * 2005-12-14 2007-06-14 Tommy Jacobson Mixing of chemicals into a thin stock pipe
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
WO2009117402A2 (en) * 2008-03-18 2009-09-24 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
US4537656A (en) 1985-08-27
JPS57121691A (en) 1982-07-29
NO156906C (no) 1987-12-16
SE442881B (sv) 1986-02-03
NO156906B (no) 1987-09-07
FI73020B (fi) 1987-04-30
NO814025L (no) 1982-05-28
FI73020C (fi) 1987-08-10
CA1147909A (en) 1983-06-14
JPS6262200B2 (fi) 1987-12-25
SE8008337L (sv) 1982-05-28

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: MO OCH DOMSJOE AKTIEBOLAG