FI792898A - Foerfarande foer uppslutning av lignocellulosahaltiga material genom alkalisk kokning - Google Patents

Foerfarande foer uppslutning av lignocellulosahaltiga material genom alkalisk kokning

Info

Publication number
FI792898A
FI792898A FI792898A FI792898A FI792898A FI 792898 A FI792898 A FI 792898A FI 792898 A FI792898 A FI 792898A FI 792898 A FI792898 A FI 792898A FI 792898 A FI792898 A FI 792898A
Authority
FI
Finland
Prior art keywords
procedure
production
chemical material
alcoholic
alcoholic chemical
Prior art date
Application number
FI792898A
Other languages
English (en)
Other versions
FI68679B (fi
FI68679C (fi
Inventor
Hans Olof Samuelson
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 FI792898A publication Critical patent/FI792898A/fi
Publication of FI68679B publication Critical patent/FI68679B/fi
Application granted granted Critical
Publication of FI68679C publication Critical patent/FI68679C/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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/08—Pretreatment of the finely-divided materials before digesting with oxygen-generating compounds
FI792898A 1978-09-22 1979-09-18 Foerfarande foer uppslutning av lignocellulosahaltiga materialgenom alkalisk kokning FI68679C (fi)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE7809959A SE413785B (sv) 1978-09-22 1978-09-22 Forfarande for uppslutning av lignocellulosahaltiga material genom alkalisk kokning i nervaro av ett tillsatsemne av redoxtyp
SE7809959 1978-09-22
CA000384551A CA1162703A (en) 1978-09-22 1981-08-25 Process for the conversion of lignocellulosic material to cellulose pulp by alkaline preoxidation followed by alkaline oxygen-free digestion, both in the presence of a redox additive
CA384551 1981-08-25

Publications (3)

Publication Number Publication Date
FI792898A true FI792898A (fi) 1980-03-23
FI68679B FI68679B (fi) 1985-06-28
FI68679C FI68679C (fi) 1985-10-10

Family

ID=25669415

Family Applications (1)

Application Number Title Priority Date Filing Date
FI792898A FI68679C (fi) 1978-09-22 1979-09-18 Foerfarande foer uppslutning av lignocellulosahaltiga materialgenom alkalisk kokning

Country Status (8)

Country Link
US (1) US4561936A (fi)
JP (1) JPS5545888A (fi)
AU (1) AU529117B2 (fi)
BR (1) BR7906010A (fi)
CA (2) CA1129163A (fi)
FI (1) FI68679C (fi)
FR (1) FR2436845A1 (fi)
SE (1) SE413785B (fi)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPS57185032A (en) * 1982-03-02 1982-11-15 Canon Inc X-ray photographing device
AU5088885A (en) * 1985-11-29 1987-06-04 Gippsland Institute of Advanced Education, The The production of hard compact carbonaceous material through water/acid/alkali treatment
JPS6371454U (fi) * 1986-10-29 1988-05-13
SE520956C2 (sv) * 2001-12-05 2003-09-16 Kvaerner Pulping Tech Kontinuerlig kokning med extra uppehållstid för avdragen vätska utanför kokaren
US7842161B2 (en) * 2006-12-18 2010-11-30 The University Of Maine System Board Of Trustees Pre-extraction and solvent pulping of lignocellulosic material
US7824521B2 (en) * 2006-12-18 2010-11-02 University Of Maine System Board Of Trustees Process of treating a lignocellulosic material with hemicellulose pre-extraction and hemicellulose adsorption

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE360128C (sv) * 1970-08-25 1983-10-31 Mo Och Domsjoe Ab Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
CA986662A (en) * 1973-05-01 1976-04-06 David L. Mccandless Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping
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
US4091749A (en) * 1975-01-02 1978-05-30 Macmillan Bloedel Limited Alkaline pulping of lignocellulosic material with amine pretreatment
FI51833C (fi) * 1975-03-18 1978-01-24 Ahlstroem Oy
CA1073161A (en) * 1975-09-05 1980-03-11 Canadian Industries Limited Delignification process
SE7612248L (sv) * 1976-11-03 1978-05-04 Mo Och Domsjoe Ab Kokning av lignocellulosahaltiga material
US4127439A (en) * 1977-01-28 1978-11-28 Crown Zellerbach Corporation Pretreatment of lignocellulose with anthraquinone prior to pulping
US4134787A (en) * 1978-05-26 1979-01-16 International Paper Company Delignification of lignocellulosic material with an alkaline liquor containing a cyclic amino compound
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

Also Published As

Publication number Publication date
US4561936A (en) 1985-12-31
FR2436845B1 (fi) 1983-01-28
JPS6257756B2 (fi) 1987-12-02
CA1129163A (en) 1982-08-10
CA1162703A (en) 1984-02-28
AU5057279A (en) 1980-03-27
FR2436845A1 (fr) 1980-04-18
FI68679B (fi) 1985-06-28
SE7809959L (sv) 1980-03-23
JPS5545888A (en) 1980-03-31
FI68679C (fi) 1985-10-10
SE413785B (sv) 1980-06-23
AU529117B2 (en) 1983-05-26
BR7906010A (pt) 1980-06-03

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: MO OCH DOMSJOE AKTIEBOLAG