SE8205241D0 - BLOWED BY CELLULOSE-containing MATERIAL - Google Patents

BLOWED BY CELLULOSE-containing MATERIAL

Info

Publication number
SE8205241D0
SE8205241D0 SE8205241A SE8205241A SE8205241D0 SE 8205241 D0 SE8205241 D0 SE 8205241D0 SE 8205241 A SE8205241 A SE 8205241A SE 8205241 A SE8205241 A SE 8205241A SE 8205241 D0 SE8205241 D0 SE 8205241D0
Authority
SE
Sweden
Prior art keywords
bleaching
blowed
cellulose
containing material
pulps
Prior art date
Application number
SE8205241A
Other languages
Swedish (sv)
Other versions
SE451606B (en
SE8205241L (en
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
Priority to SE8205241A priority Critical patent/SE451606B/en
Publication of SE8205241D0 publication Critical patent/SE8205241D0/en
Priority to AU18379/83A priority patent/AU554072B2/en
Priority to FR8313764A priority patent/FR2537177B1/en
Priority to JP58168082A priority patent/JPS5966589A/en
Priority to FI833246A priority patent/FI74054B/en
Priority to IT48965/83A priority patent/IT1170488B/en
Priority to NO833282A priority patent/NO833282L/en
Priority to NL8303159A priority patent/NL8303159A/en
Priority to DE3333219A priority patent/DE3333219C2/en
Publication of SE8205241L publication Critical patent/SE8205241L/en
Publication of SE451606B publication Critical patent/SE451606B/en

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)

Abstract

The present invention relates to a process for bleaching pulps, obtained in high yields, with peroxides. It has hitherto been known to bleach mechanical pulps with peroxide, but according to these methods the bleaching is carried out in a single stage. According to the invention, the bleaching stage is divided into two or more phases with intervening draining and addition of chemicals.
SE8205241A 1982-09-14 1982-09-14 VIEW WHITENING OF HOG REPLACEMENT MASSES AVERAGE PEROXIDES SE451606B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE8205241A SE451606B (en) 1982-09-14 1982-09-14 VIEW WHITENING OF HOG REPLACEMENT MASSES AVERAGE PEROXIDES
AU18379/83A AU554072B2 (en) 1982-09-14 1983-08-24 Bleaching cellulose pulps with peroxides
FR8313764A FR2537177B1 (en) 1982-09-14 1983-08-26 PROCESS FOR THE BLEACHING OF PRODUCTS CONTAINING CELLULOSE
IT48965/83A IT1170488B (en) 1982-09-14 1983-09-12 WHITENING PROCEDURE FOR CELLULOSE-CONTAINING MATERIAL
FI833246A FI74054B (en) 1982-09-14 1983-09-12 SAETT VID BLEKNING AV CELLULOSAHALTIGT MATERIAL.
JP58168082A JPS5966589A (en) 1982-09-14 1983-09-12 Bleaching of cellulose-containing material
NO833282A NO833282L (en) 1982-09-14 1983-09-13 PROCEDURE FOR BLACKING CELLULOSE-CONTAINING MATERIAL
NL8303159A NL8303159A (en) 1982-09-14 1983-09-13 METHOD FOR BLEACHING CELLULOSE-CONTAINING MATERIAL
DE3333219A DE3333219C2 (en) 1982-09-14 1983-09-14 Process for bleaching high-yield cellulose pulps by means of peroxides with recycling of the waste liquors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8205241A SE451606B (en) 1982-09-14 1982-09-14 VIEW WHITENING OF HOG REPLACEMENT MASSES AVERAGE PEROXIDES

Publications (3)

Publication Number Publication Date
SE8205241D0 true SE8205241D0 (en) 1982-09-14
SE8205241L SE8205241L (en) 1984-03-15
SE451606B SE451606B (en) 1987-10-19

Family

ID=20347840

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8205241A SE451606B (en) 1982-09-14 1982-09-14 VIEW WHITENING OF HOG REPLACEMENT MASSES AVERAGE PEROXIDES

Country Status (9)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1249402A (en) * 1984-12-21 1989-01-31 Pulp And Paper Research Institute Of Canada Multistage brightening of high yield and ultra high- yield wood pulps
FR2582692B1 (en) * 1985-05-29 1987-12-11 Atochem TREATMENT OF CHEMICAL PAPER PULP WITH HYDROGEN PEROXIDE FOR BLEACHING
FR2593527B1 (en) * 1986-01-30 1988-03-25 Centre Tech Ind Papier PROCESS FOR BLEACHING MECHANICAL PASTA.
FR2622221A1 (en) * 1987-10-22 1989-04-28 Atochem PROCESS FOR BLEACHING PASTA
FR2661431B1 (en) * 1990-04-30 1992-07-17 Atochem HIGH-YIELD PAPER PULP HYDROGEN PEROXIDE BLEACHING PROCESS.
FR2661430B1 (en) * 1990-04-30 1992-07-17 Atochem HIGH-YIELD PAPER PULP HYDROGEN PEROXIDE BLEACHING PROCESS.

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 (en) * 1962-02-23 1965-10-21 Rudolf Bott Dipl Ing Process for the bleaching of cellulosic fibers
GB1106842A (en) * 1965-01-25 1968-03-20 Electric Reduction Co Manufacture of cellulosic pulp
FR1524581A (en) * 1966-05-25 1968-05-10 Solvay Process for adjusting the whiteness of cellulose pulp treated with hydrogen peroxide or a similar product
DE2219504C2 (en) * 1972-04-21 1974-10-03 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Multi-stage bleaching of cellulose with significantly reduced use of chlorine
DE2219505C3 (en) * 1972-04-21 1974-10-17 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Chlorine-free multi-stage bleaching of cellulose
SE390178B (en) * 1974-09-04 1976-12-06 Sunds Ab WHEN BLACHING LIGNOCELLULOSE-CONTAINING MATERIAL WITH A COMBINATION OF GAS PHASE CHLORINATION AND A REPLACEMENT BLACHING SYSTEM CONTAINING CHLORIO DIOXIDE
SE415581B (en) * 1977-04-18 1980-10-13 Mo Och Domsjoe Ab PROCEDURE FOR PEROCID WHITING OF HOG REPLACEMENT MASS
SE420329C (en) * 1978-02-16 1984-07-10 Mo Och Domsjoe Ab PROCEDURE FOR THE PREPARATION OF GRINDING PAPER
JPS5545806A (en) * 1978-09-21 1980-03-31 Oji Paper Co Peroxide bleaching method of wood pulp
CA1151363A (en) * 1979-04-17 1983-08-09 Henri Lemoyne Process for the 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
AU554072B2 (en) 1986-08-07
FI74054B (en) 1987-08-31
FR2537177B1 (en) 1986-02-21
IT8348965A0 (en) 1983-09-12
SE451606B (en) 1987-10-19
NO833282L (en) 1984-03-15
FI833246A (en) 1984-03-15
IT1170488B (en) 1987-06-03
JPS5966589A (en) 1984-04-16
NL8303159A (en) 1984-04-02
DE3333219C2 (en) 1986-10-23
FR2537177A1 (en) 1984-06-08
AU1837983A (en) 1984-03-22
FI833246A0 (en) 1983-09-12
SE8205241L (en) 1984-03-15
DE3333219A1 (en) 1984-03-15

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