ZA712989B - Process for bleaching cellulose-containing materials - Google Patents

Process for bleaching cellulose-containing materials

Info

Publication number
ZA712989B
ZA712989B ZA712989A ZA712989A ZA712989B ZA 712989 B ZA712989 B ZA 712989B ZA 712989 A ZA712989 A ZA 712989A ZA 712989 A ZA712989 A ZA 712989A ZA 712989 B ZA712989 B ZA 712989B
Authority
ZA
South Africa
Prior art keywords
containing materials
bleaching cellulose
bleaching
cellulose
materials
Prior art date
Application number
ZA712989A
Inventor
P Paasonen
P Koivisto
I Lassenius
Original Assignee
Kymin Osakeyhti Oe Kymmene 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 Kymin Osakeyhti Oe Kymmene Ab filed Critical Kymin Osakeyhti Oe Kymmene Ab
Publication of ZA712989B publication Critical patent/ZA712989B/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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
ZA712989A 1970-05-11 1971-05-07 Process for bleaching cellulose-containing materials ZA712989B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI701311A FI45574C (en) 1970-05-11 1970-05-11 Process for bleaching cellulosic materials.

Publications (1)

Publication Number Publication Date
ZA712989B true ZA712989B (en) 1972-01-26

Family

ID=8505417

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA712989A ZA712989B (en) 1970-05-11 1971-05-07 Process for bleaching cellulose-containing materials

Country Status (7)

Country Link
BR (1) BR7102828D0 (en)
CA (1) CA946107A (en)
DE (1) DE2040763C3 (en)
FI (1) FI45574C (en)
NO (1) NO127205B (en)
SE (1) SE373396B (en)
ZA (1) ZA712989B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE373395B (en) * 1972-12-19 1975-02-03 Mo Och Domsjoe Ab PROCEDURE FOR THE PRODUCTION OF CELLULOSA MASS WITH HIGH LIGHTNESS BY DISTRIBUTING WOOD WITH ACID GAS UNDER PRESSURE IN THE PRESENCE OF A COCK
SE420430B (en) * 1978-02-17 1981-10-05 Mo Och Domsjoe Ab PROCEDURE FOR WHEATING AND EXTRACTION OF LIGNOCELLULOSALLY MATERIALS WITH PEROXID CONTAINING BLACKS
US4410397A (en) 1978-04-07 1983-10-18 International Paper Company Delignification and bleaching process and solution for lignocellulosic pulp with peroxide in the presence of metal additives
US4372812A (en) * 1978-04-07 1983-02-08 International Paper Company Chlorine free process for bleaching lignocellulosic pulp
FR2457339A1 (en) * 1979-05-25 1980-12-19 Interox PROCESS FOR THE DELIGNIFICATION AND BLEACHING OF CHEMICAL AND SEMI-CHEMICAL CELLULOSIC PASTA
DE3207157C1 (en) * 1982-02-27 1983-06-09 Degussa Ag, 6000 Frankfurt Process for the production of semi-bleached cellulose
FR2566015B1 (en) * 1984-06-15 1986-08-29 Centre Tech Ind Papier PROCESS FOR BLEACHING MECHANICAL PASTE WITH HYDROGEN PEROXIDE
DE3428352A1 (en) * 1984-08-01 1986-02-13 Degussa Ag, 6000 Frankfurt METHOD FOR DELIGNIFICATION AND BLEACHING OF CELLULAS
DE3802401A1 (en) * 1988-01-28 1989-08-03 Degussa METHOD FOR PRODUCING SEMI-BLEACHED FUEL
FI89516B (en) 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande Foer blekning av cellulosamassa med Otson
DE402335T1 (en) * 1989-06-06 1992-04-09 Eka Nobel Ab, Surte METHOD FOR BLEACHING LIGNOCELLULOSE-CONTAINING CELLS.
SE9001481L (en) * 1990-04-23 1991-10-24 Eka Nobel Ab REDUCTION OF HALOGEN ORGANIC SUBSTANCES IN BLEACHING WASTE
SE466061B (en) * 1990-04-23 1991-12-09 Eka Nobel Ab Bleaching of chemical pulp by treatment with first a complexing agent and then a peroxide containing substance
SE9301960L (en) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Bleaching of chemical pulp with peroxide at overpressure
EP0866895B1 (en) * 1995-12-07 2000-06-14 Beloit Technologies, Inc. Oxygen delignification of medium consistency pulp slurry
US6375797B1 (en) * 1996-06-20 2002-04-23 Andritz-Ahlstrom Oy Bleaching chemical pulp in a PkDQ-Po Sequence
BE1011129A4 (en) * 1997-04-25 1999-05-04 Solvay Interox Delignification continuous process and / or money virgin pulp chemical or recycled.

Also Published As

Publication number Publication date
DE2040763C3 (en) 1975-10-02
FI45574B (en) 1972-04-04
FI45574C (en) 1972-07-10
SE373396B (en) 1975-02-03
DE2040763B2 (en) 1975-02-20
CA946107A (en) 1974-04-30
BR7102828D0 (en) 1973-05-03
DE2040763A1 (en) 1971-11-18
NO127205B (en) 1973-05-21

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