FI802742A - Foerfarande foer hartshaltsminskning vid framstaellning av cellulosamassor ur lignocellulosamaterial - Google Patents

Foerfarande foer hartshaltsminskning vid framstaellning av cellulosamassor ur lignocellulosamaterial

Info

Publication number
FI802742A
FI802742A FI802742A FI802742A FI802742A FI 802742 A FI802742 A FI 802742A FI 802742 A FI802742 A FI 802742A FI 802742 A FI802742 A FI 802742A FI 802742 A FI802742 A FI 802742A
Authority
FI
Finland
Prior art keywords
lignocellulosamaterial
hartshaltsminskning
cellulosamassor
foerfarande foer
vid framstaellning
Prior art date
Application number
FI802742A
Other languages
English (en)
Other versions
FI68680B (fi
FI68680C (fi
Inventor
Jonas Arne Ingvar Lindahl
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 FI802742A publication Critical patent/FI802742A/fi
Publication of FI68680B publication Critical patent/FI68680B/fi
Application granted granted Critical
Publication of FI68680C publication Critical patent/FI68680C/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
    • D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
FI802742A 1979-09-12 1980-09-01 Foerfarande foer hartshaltsminskning vid framstaellning av cellulosamassor ur lignocellulosamaterial FI68680C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7907557 1979-09-12
SE7907557A SE418628B (sv) 1979-09-12 1979-09-12 Forfarande for hartshaltsminskning vid framstellning av cellulosamassor ur lignocellulosamaterial

Publications (3)

Publication Number Publication Date
FI802742A true FI802742A (fi) 1981-03-13
FI68680B FI68680B (fi) 1985-06-28
FI68680C FI68680C (fi) 1985-10-10

Family

ID=20338805

Family Applications (1)

Application Number Title Priority Date Filing Date
FI802742A FI68680C (fi) 1979-09-12 1980-09-01 Foerfarande foer hartshaltsminskning vid framstaellning av cellulosamassor ur lignocellulosamaterial

Country Status (11)

Country Link
JP (1) JPS5643496A (fi)
AT (1) AT374512B (fi)
AU (1) AU524841B2 (fi)
BR (1) BR8005524A (fi)
CA (1) CA1157209A (fi)
CH (1) CH651083A5 (fi)
DE (1) DE3034042C2 (fi)
FI (1) FI68680C (fi)
FR (1) FR2465026A1 (fi)
NO (1) NO155498C (fi)
SE (1) SE418628B (fi)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444621A (en) * 1980-11-21 1984-04-24 Mo Och Domsjo Aktiebolag Process and apparatus for the deresination and brightness improvement of cellulose pulp
SE8405128L (sv) * 1984-10-15 1986-04-16 Kamyr Ab Behandling av hogutbytesmassa
SE502321C2 (sv) * 1994-03-04 1995-10-02 Kvaerner Pulping Tech Förfarande vid ozonblekning av sulfitmassa
US5728265A (en) * 1995-06-12 1998-03-17 Henkel Corporation Process for enhancing white liquor penetration into wood chips by contacting the chips with a mixture of the white liquor and a polymethylalkyl siloxane
FI20105799A0 (fi) 2010-07-13 2010-07-13 Olli Joutsimo Parantunut kemiallisen massan valmistusprosessi

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE84946C (fi) *
DE363666C (de) * 1918-01-23 1922-11-11 Carl G Schwalbe Dr Verfahren zur Entfernung von Harz, Fett, Wachs u. dgl. aus Pflanzenstoffen, insbesondere aus Holz und Holzzellstoffen
US2000562A (en) * 1933-07-06 1935-05-07 Patentaktiebolaget Grondal Ram Process of removing resin from sulphite cellulose
US2224159A (en) * 1937-09-27 1940-12-10 Rayonier Inc Process for purifying wood pulp

Also Published As

Publication number Publication date
CH651083A5 (en) 1985-08-30
AU524841B2 (en) 1982-10-07
DE3034042C2 (de) 1985-08-22
NO155498B (no) 1986-12-29
FR2465026B1 (fi) 1983-08-19
CA1157209A (en) 1983-11-22
NO155498C (no) 1994-11-21
FR2465026A1 (fr) 1981-03-20
JPH0114357B2 (fi) 1989-03-10
AU6219580A (en) 1981-03-19
FI68680B (fi) 1985-06-28
AT374512B (de) 1984-05-10
ATA457680A (de) 1983-09-15
NO802658L (no) 1981-03-13
BR8005524A (pt) 1981-03-17
JPS5643496A (en) 1981-04-22
FI68680C (fi) 1985-10-10
DE3034042A1 (de) 1981-04-02
SE7907557L (sv) 1981-03-13
SE418628B (sv) 1981-06-15

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Legal Events

Date Code Title Description
MA Patent expired

Owner name: MO OCH DOMSJOE AKTIEBOLAG