SE8902058L - Foerfarande vid blekning av lignocellulosa- haltigt material - Google Patents

Foerfarande vid blekning av lignocellulosa- haltigt material

Info

Publication number
SE8902058L
SE8902058L SE8902058A SE8902058A SE8902058L SE 8902058 L SE8902058 L SE 8902058L SE 8902058 A SE8902058 A SE 8902058A SE 8902058 A SE8902058 A SE 8902058A SE 8902058 L SE8902058 L SE 8902058L
Authority
SE
Sweden
Prior art keywords
pulp
stage
interval
treatment
bleaching
Prior art date
Application number
SE8902058A
Other languages
English (en)
Other versions
SE467006B (sv
SE8902058D0 (sv
Inventor
P G Lundgren
Original Assignee
Eka Nobel 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
Publication of SE8902058D0 publication Critical patent/SE8902058D0/sv
Priority to SE8902058A priority Critical patent/SE467006B/sv
Application filed by Eka Nobel Ab filed Critical Eka Nobel Ab
Priority to AT90850200T priority patent/ATE97179T1/de
Priority to DK90850200T priority patent/DK0402335T4/da
Priority to ES90850200T priority patent/ES2038097T5/es
Priority to EP90850200A priority patent/EP0402335B2/en
Priority to DE199090850200T priority patent/DE402335T1/de
Priority to DE69004492T priority patent/DE69004492T3/de
Priority to CA002017807A priority patent/CA2017807C/en
Priority to NZ233884A priority patent/NZ233884A/en
Priority to AU56217/90A priority patent/AU613272B2/en
Priority to FI902773A priority patent/FI107546B/sv
Priority to SU904830158A priority patent/RU2026437C1/ru
Priority to BR909002660A priority patent/BR9002660A/pt
Priority to NO902479A priority patent/NO174354C/no
Priority to JP2146411A priority patent/JP2843892B2/ja
Priority to PT94287A priority patent/PT94287B/pt
Publication of SE8902058L publication Critical patent/SE8902058L/sv
Priority to US07/813,058 priority patent/US5310458A/en
Publication of SE467006B publication Critical patent/SE467006B/sv
Priority to LVP-92-600A priority patent/LV10517B/xx
Priority to LTIP444A priority patent/LT3269B/lt

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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents
    • 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)
SE8902058A 1989-06-06 1989-06-06 Blekning av kemisk massa med peroxid varvid massan foerst behandlas med en komplexbildare SE467006B (sv)

Priority Applications (19)

Application Number Priority Date Filing Date Title
SE8902058A SE467006B (sv) 1989-06-06 1989-06-06 Blekning av kemisk massa med peroxid varvid massan foerst behandlas med en komplexbildare
AT90850200T ATE97179T1 (de) 1989-06-06 1990-05-21 Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
DK90850200T DK0402335T4 (da) 1989-06-06 1990-05-21 Fremgangsmåde til blegning af lignocelluloseholdigpulp
ES90850200T ES2038097T5 (es) 1989-06-06 1990-05-21 Procedimiento para blanquear pastas papeleras que contienen lignocelulosa.
EP90850200A EP0402335B2 (en) 1989-06-06 1990-05-21 Process for bleaching lignocellulose-containing pulps
DE199090850200T DE402335T1 (de) 1989-06-06 1990-05-21 Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
DE69004492T DE69004492T3 (de) 1989-06-06 1990-05-21 Verfahren zum Bleichen von Lignocellulose enthaltenden Zellstoffen.
CA002017807A CA2017807C (en) 1989-06-06 1990-05-30 Process for bleaching lignocellulose-containing pulps
NZ233884A NZ233884A (en) 1989-06-06 1990-05-31 Peroxide bleaching of ligno-cellulose-containing pulp: pretreatment with a complexing agent for trace metals
AU56217/90A AU613272B2 (en) 1989-06-06 1990-06-01 Process for bleaching lignocellulose-containing pulps
FI902773A FI107546B (sv) 1989-06-06 1990-06-04 Förfarande vid blekning av lignocellulosahaltig massa
SU904830158A RU2026437C1 (ru) 1989-06-06 1990-06-05 Способ многоступенчатой отбелки целлюлозы
BR909002660A BR9002660A (pt) 1989-06-06 1990-06-05 Processo para branqueamento de polpa contendo lignocelulose
NO902479A NO174354C (no) 1989-06-06 1990-06-05 Fremgangsmåte ved bleking av kjemisk delignifisert lignocelluloseholdig masse
JP2146411A JP2843892B2 (ja) 1989-06-06 1990-06-06 リグノセルロース含有パルプの漂白方法
PT94287A PT94287B (pt) 1989-06-06 1990-06-06 Processo para branqueamentode pastas contendo lignocelulose
US07/813,058 US5310458A (en) 1989-06-06 1991-12-23 Process for bleaching lignocellulose-containing pulps
LVP-92-600A LV10517B (en) 1989-06-06 1992-12-30 Process for bleaching lignocellulose-containing pulps
LTIP444A LT3269B (en) 1989-06-06 1993-03-19 Process for bleaching of lignocellulose-containing pulps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8902058A SE467006B (sv) 1989-06-06 1989-06-06 Blekning av kemisk massa med peroxid varvid massan foerst behandlas med en komplexbildare

Publications (3)

Publication Number Publication Date
SE8902058D0 SE8902058D0 (sv) 1989-06-06
SE8902058L true SE8902058L (sv) 1990-12-07
SE467006B SE467006B (sv) 1992-05-11

Family

ID=20376204

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8902058A SE467006B (sv) 1989-06-06 1989-06-06 Blekning av kemisk massa med peroxid varvid massan foerst behandlas med en komplexbildare

Country Status (3)

Country Link
LT (1) LT3269B (sv)
RU (1) RU2026437C1 (sv)
SE (1) SE467006B (sv)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251731A (en) 1963-02-11 1966-05-17 Andrew J Gard Bleaching of wood pulp with a sequestering agent and hydrogen peroxide
SE420430B (sv) 1978-02-17 1981-10-05 Mo Och Domsjoe Ab Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel
SU903429A1 (ru) 1980-06-05 1982-02-07 Центральный научно-исследовательский институт бумаги Способ отбелки древесной массы
FR2613388B1 (fr) 1987-04-02 1990-05-04 Atochem Procede de blanchiment de pates

Also Published As

Publication number Publication date
RU2026437C1 (ru) 1995-01-09
SE467006B (sv) 1992-05-11
SE8902058D0 (sv) 1989-06-06
LT3269B (en) 1995-05-25
LTIP444A (en) 1994-11-25

Similar Documents

Publication Publication Date Title
FI902773A0 (fi) Foerfarande vid blekning av lignocellulosahaltig massa.
FI941764A0 (sv) Förfarande för blekning av lignocellulosahaltig massa
ATE106961T1 (de) Bleichverfahren zur herstellung von hochweissem zellstoff.
SE8902058D0 (sv) Foerfarande vid blekning av lignocellulosa- haltigt material
SE9301161D0 (sv) Foerfarande foer behandling av processvatten
FI950882A (sv) Metod för behandling av processvatten
ATE151824T1 (de) Aufschlussverfahren
MX9306618A (es) Proceso para blanqueado de pulpa que contiene lig nocelulosa.

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8902058-0

Format of ref document f/p: F

NUG Patent has lapsed