SE8207356L - PROCEDURE FOR TREATMENT OF CHEMICAL PAPER - Google Patents

PROCEDURE FOR TREATMENT OF CHEMICAL PAPER

Info

Publication number
SE8207356L
SE8207356L SE8207356A SE8207356A SE8207356L SE 8207356 L SE8207356 L SE 8207356L SE 8207356 A SE8207356 A SE 8207356A SE 8207356 A SE8207356 A SE 8207356A SE 8207356 L SE8207356 L SE 8207356L
Authority
SE
Sweden
Prior art keywords
treatment
procedure
chemical paper
acid solution
pulp
Prior art date
Application number
SE8207356A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8207356D0 (en
SE462288B (en
Inventor
D Lachenal
Choudens C De
Original Assignee
Ugine Kuhlmann
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 Ugine Kuhlmann filed Critical Ugine Kuhlmann
Publication of SE8207356D0 publication Critical patent/SE8207356D0/en
Publication of SE8207356L publication Critical patent/SE8207356L/en
Publication of SE462288B publication Critical patent/SE462288B/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
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

When paper pulp is bleached with an alkaline peroxide solution and pretreated with an acid solution, it has been found that, while preserving the mechanical properties of the pulp, its lignin content is considerably reduced if the treatment with the acid solution is carried out at temperatures of at least 50 DEG C.
SE8207356A 1982-01-28 1982-12-22 TREATMENT OF CHEMICAL MASSES IN AN ACID STEP FOR PEROXIDE TREATMENT SE462288B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8201603A FR2520397A1 (en) 1982-01-28 1982-01-28 PROCESS FOR TREATING CHEMICAL PAPER PASTES

Publications (3)

Publication Number Publication Date
SE8207356D0 SE8207356D0 (en) 1982-12-22
SE8207356L true SE8207356L (en) 1983-07-29
SE462288B SE462288B (en) 1990-05-28

Family

ID=9270561

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8207356A SE462288B (en) 1982-01-28 1982-12-22 TREATMENT OF CHEMICAL MASSES IN AN ACID STEP FOR PEROXIDE TREATMENT

Country Status (16)

Country Link
JP (1) JPS58132190A (en)
KR (1) KR850001341B1 (en)
AT (1) AT381736B (en)
BE (1) BE895645A (en)
BR (1) BR8300402A (en)
CA (1) CA1206704A (en)
CH (1) CH653720A5 (en)
DE (1) DE3302580A1 (en)
ES (1) ES519327A0 (en)
FI (1) FI76134C (en)
FR (1) FR2520397A1 (en)
IT (1) IT1162810B (en)
NO (1) NO161391C (en)
OA (1) OA07313A (en)
PT (1) PT76145B (en)
SE (1) SE462288B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1227304A (en) * 1984-08-01 1987-09-29 Raymond C. Francis Delignification of pulp
FR2593527B1 (en) * 1986-01-30 1988-03-25 Centre Tech Ind Papier PROCESS FOR BLEACHING MECHANICAL PASTA.
EP0402335B2 (en) * 1989-06-06 2001-03-14 Eka Chemicals AB Process for bleaching lignocellulose-containing pulps
US5246543A (en) * 1989-08-18 1993-09-21 Degussa Corporation Process for bleaching and delignification of lignocellulosic materials
US5091054A (en) * 1989-08-18 1992-02-25 Degussa Corporation Process for bleaching and delignification of lignocellulosic
DE3937932A1 (en) * 1989-11-15 1991-05-16 Holtzmann & Cie Ag E Delignification and bleaching of pulp with alkali chlorite - by adding chlorite before acidification to produce nascent reagent, minimising pollution
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
SE9001481L (en) * 1990-04-23 1991-10-24 Eka Nobel Ab REDUCTION OF HALOGEN ORGANIC SUBSTANCES IN BLEACHING WASTE
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
SE470065C (en) * 1991-04-30 1996-01-15 Eka Nobel Ab Treatment of chemical pulp with an acid and then a magnesium and calcium compound in chlorine-free bleaching
SE500113C2 (en) * 1992-07-09 1994-04-18 Kamyr Ab Method of bleaching pulp for disposal of released metals
SE512137C2 (en) * 1992-10-29 2000-01-31 Eka Chemicals Ab Process for bleaching lignocellulosic pulp
SE500616C2 (en) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Bleaching of chemical pulp with peroxide at overpressure
US6776876B1 (en) 1994-10-13 2004-08-17 Andritz Oy Method of treating cellulosic pulp to remove hexenuronic acid
EP0858526A1 (en) * 1995-02-17 1998-08-19 Ahlstrom Machinery Oy Method of pretreating pulp to be bleached with peroxide
SE526241C2 (en) * 2003-12-18 2005-08-02 Metso Paper Inc Procedure for acidifying lignocellulosic pulp before ozone bleaching
US8080560B2 (en) 2004-12-17 2011-12-20 3M Innovative Properties Company Immune response modifier formulations containing oleic acid and methods
US8889154B2 (en) 2005-09-15 2014-11-18 Medicis Pharmaceutical Corporation Packaging for 1-(2-methylpropyl)-1H-imidazo[4,5-c] quinolin-4-amine-containing formulation
US8980051B2 (en) 2009-04-24 2015-03-17 International Paper Company Sulfonation of pulp produced by alkali pulping process

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1705897A (en) * 1922-03-16 1929-03-19 Bradley Linn Bleaching of pulp
FR1010501A (en) * 1948-08-31 1952-06-12 Papiers Abadie Sa Des Cellulose pulp bleaching process
US2668095A (en) * 1950-09-22 1954-02-02 Du Pont Bleaching chemical paper pulp
FR1201712A (en) * 1958-07-11 1960-01-05 Fr Du Xylon Soc Cellulose pulp bleaching improvements
JPS51102103A (en) * 1975-03-05 1976-09-09 Nippon Parupu Kogyo Kk Ryusanenhoparupuno hyohakuhoho
FR2398839A1 (en) * 1977-07-29 1979-02-23 Centre Tech Ind Papier Kraft type paper pulp prepn. without sulphur pollutants - by treating shavings with sodium hydroxide followed by stabilised peroxide
DE2742262C2 (en) * 1977-09-20 1982-06-09 Degussa Ag, 6000 Frankfurt Process for the production of a medium to high viscosity softwood sulphite pulp
JPS5685489A (en) * 1979-12-10 1981-07-11 Kogyo Gijutsuin Pulp production

Also Published As

Publication number Publication date
FI830288A0 (en) 1983-01-27
JPS58132190A (en) 1983-08-06
ES8400520A1 (en) 1983-10-16
OA07313A (en) 1984-08-31
NO830268L (en) 1983-07-29
KR840002934A (en) 1984-07-21
BR8300402A (en) 1983-11-01
FR2520397B1 (en) 1984-03-09
NO161391C (en) 1989-08-09
NO161391B (en) 1989-05-02
AT381736B (en) 1986-11-25
CH653720A5 (en) 1986-01-15
DE3302580A1 (en) 1983-08-04
SE8207356D0 (en) 1982-12-22
FR2520397A1 (en) 1983-07-29
FI76134B (en) 1988-05-31
PT76145A (en) 1983-02-01
KR850001341B1 (en) 1985-09-19
IT8367014A0 (en) 1983-01-07
BE895645A (en) 1983-07-19
DE3302580C2 (en) 1992-07-02
SE462288B (en) 1990-05-28
ATA26383A (en) 1986-04-15
FI830288L (en) 1983-07-29
JPH0217679B2 (en) 1990-04-23
PT76145B (en) 1985-11-25
ES519327A0 (en) 1983-10-16
IT1162810B (en) 1987-04-01
CA1206704A (en) 1986-07-02
FI76134C (en) 1988-09-09

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