FI74054B - Saett vid blekning av cellulosahaltigt material. - Google Patents

Saett vid blekning av cellulosahaltigt material. Download PDF

Info

Publication number
FI74054B
FI74054B FI833246A FI833246A FI74054B FI 74054 B FI74054 B FI 74054B FI 833246 A FI833246 A FI 833246A FI 833246 A FI833246 A FI 833246A FI 74054 B FI74054 B FI 74054B
Authority
FI
Finland
Prior art keywords
bleaching
phase
pulp
chemicals
dewatering
Prior art date
Application number
FI833246A
Other languages
English (en)
Finnish (fi)
Other versions
FI833246A (fi
FI833246A0 (fi
Inventor
Tjell-Aoke Haegglund
Original Assignee
Sca Development 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 Sca Development Ab filed Critical Sca Development Ab
Publication of FI833246A0 publication Critical patent/FI833246A0/fi
Publication of FI833246A publication Critical patent/FI833246A/fi
Application granted granted Critical
Publication of FI74054B publication Critical patent/FI74054B/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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Conductive Materials (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
FI833246A 1982-09-14 1983-09-12 Saett vid blekning av cellulosahaltigt material. FI74054B (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8205241 1982-09-14
SE8205241A SE451606B (sv) 1982-09-14 1982-09-14 Sett vid blekning av hogutbytesmassor medelst peroxider

Publications (3)

Publication Number Publication Date
FI833246A0 FI833246A0 (fi) 1983-09-12
FI833246A FI833246A (fi) 1984-03-15
FI74054B true FI74054B (fi) 1987-08-31

Family

ID=20347840

Family Applications (1)

Application Number Title Priority Date Filing Date
FI833246A FI74054B (fi) 1982-09-14 1983-09-12 Saett vid blekning av cellulosahaltigt material.

Country Status (9)

Country Link
JP (1) JPS5966589A (fr)
AU (1) AU554072B2 (fr)
DE (1) DE3333219C2 (fr)
FI (1) FI74054B (fr)
FR (1) FR2537177B1 (fr)
IT (1) IT1170488B (fr)
NL (1) NL8303159A (fr)
NO (1) NO833282L (fr)
SE (1) SE451606B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1249402A (fr) * 1984-12-21 1989-01-31 Pulp And Paper Research Institute Of Canada Avivage multi-etage des pates a fort et tres fort rendement
FR2582692B1 (fr) * 1985-05-29 1987-12-11 Atochem Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment
FR2593527B1 (fr) * 1986-01-30 1988-03-25 Centre Tech Ind Papier Procede de blanchiment des pates mecaniques.
FR2622221A1 (fr) * 1987-10-22 1989-04-28 Atochem Procede de blanchiment de pates
FR2661431B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde de l'hydrogene de pates a papier a haut rendement.
FR2661430B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde d'hydrogene de pates a papier a haut rendement.

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2008603A (en) * 1931-09-17 1935-07-16 Thorne Carl Busch Apparatus for refining pulp and the like
DE1203592B (de) * 1962-02-23 1965-10-21 Rudolf Bott Dipl Ing Verfahren zum Bleichen von cellulosehaltigen Faserstoffen
GB1106842A (en) * 1965-01-25 1968-03-20 Electric Reduction Co Manufacture of cellulosic pulp
FR1524581A (fr) * 1966-05-25 1968-05-10 Solvay Procédé de réglage de la blancheur d'une pâte cellulosique traitée par le peroxyde d'hydrogène ou un produit similaire
DE2219505C3 (de) * 1972-04-21 1974-10-17 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Chlorfreie Mehrstufenbleiche von Zellstoff
DE2219504C2 (de) * 1972-04-21 1974-10-03 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Mehrstufenbleiche von Zellstoffen mit erheblich reduziertem Chloreinsatz
SE390178B (sv) * 1974-09-04 1976-12-06 Sunds Ab Sett vid blekning av lignocellulosahaltigt material med en kombination av gasfasklorering och ett system for fortrengningsblekning innehallande klordioxid
SE415581B (sv) * 1977-04-18 1980-10-13 Mo Och Domsjoe Ab Forfarande for perocidblekning av hogutbytesmassa
SE420329C (sv) * 1978-02-16 1984-10-15 Mo Och Domsjoe Ab Forfarande for framstellning av slipmassa vid overtryck
JPS5545806A (en) * 1978-09-21 1980-03-31 Oji Paper Co Peroxide bleaching method of wood pulp
AU539108B2 (en) * 1979-04-17 1984-09-13 Interox Societe Anonyme Delignification of unbleached chemical pulp
JPS5721591A (en) * 1980-07-11 1982-02-04 Mitsubishi Gas Chemical Co Peroxide bleaching of wood pulp

Also Published As

Publication number Publication date
FR2537177B1 (fr) 1986-02-21
FR2537177A1 (fr) 1984-06-08
DE3333219C2 (de) 1986-10-23
SE8205241L (sv) 1984-03-15
AU554072B2 (en) 1986-08-07
NL8303159A (nl) 1984-04-02
IT8348965A0 (it) 1983-09-12
AU1837983A (en) 1984-03-22
SE8205241D0 (sv) 1982-09-14
JPS5966589A (ja) 1984-04-16
IT1170488B (it) 1987-06-03
FI833246A (fi) 1984-03-15
SE451606B (sv) 1987-10-19
NO833282L (no) 1984-03-15
FI833246A0 (fi) 1983-09-12
DE3333219A1 (de) 1984-03-15

Similar Documents

Publication Publication Date Title
FI67895C (fi) Foerfarande foer blekning och extraktion av lignocellulosamaterial.
US6743332B2 (en) High temperature peroxide bleaching of mechanical pulps
FI63607C (fi) Foerfarande foer framstaellning av cellulosamassor i utbytesomraodet 65-95 %
FI73750B (fi) Saett vid blekning av lignocellulosahaltigt material.
US4155806A (en) Method for continuous alkaline delignification of lignocellulose material in two or more steps, the final of which with oxygen
FI87939C (fi) Foerfarande vid bleknig av cellulosamassa eller fraktion daerav, anordning att anvaendas foer genomfoerande av foerfarandet och en skruvpress, i synnerhet att anvaendas vid foerfarandet respektive i anordningen
US4160693A (en) Process for the bleaching of cellulose pulp
EP0056263A1 (fr) Procédé pour améliorer le lavage de pâtes cellulosiques préparées en partant d'une matière lignocellulosique
FI74054B (fi) Saett vid blekning av cellulosahaltigt material.
CA1278208C (fr) Traitement de la pate a papier haut rendement
JP2010144273A (ja) リグノセルロース物質の化学パルプの製造方法
US4560437A (en) Process for delignification of chemical wood pulp using sodium sulphite or bisulphite prior to oxygen-alkali treatment
FI89517B (fi) Styrning av peroxidblekning av olika traemassor
FI73020C (fi) Foerfarande foer delignifiering/blekning av cellulosamassa.
FI96522B (fi) Menetelmä valkaistujen kemitermomekaanisten massojen valmistamiseksi
KR100538083B1 (ko) 리그노셀룰로오스성 물질의 산소 탈리그닌화
FI81396B (fi) Foerfarande foer behandling av avfallsvatten fraon traefoeraedlingsindustrins massaframstaellningsprocesser.
FI69657B (fi) Foerfarande foer hartshaltsminskning vid framstaellning av cellulosamassor ur lignocellulosamaterial
JPH0219236B2 (fr)
US3992250A (en) Method for bleaching of high consistency cellulosic pulp
JPH05247864A (ja) セルロースパルプの漂白法
JPH0466954B2 (fr)

Legal Events

Date Code Title Description
FA Application withdrawn

Owner name: SCA DEVELOPMENT AKTIEBOLAG