[go: up one dir, main page]

SE8008336L - Forfarande for delignifiering/blekning av cellulosamassa - Google Patents

Forfarande for delignifiering/blekning av cellulosamassa

Info

Publication number
SE8008336L
SE8008336L SE8008336A SE8008336A SE8008336L SE 8008336 L SE8008336 L SE 8008336L SE 8008336 A SE8008336 A SE 8008336A SE 8008336 A SE8008336 A SE 8008336A SE 8008336 L SE8008336 L SE 8008336L
Authority
SE
Sweden
Prior art keywords
cellulosamassa
delignification
whiting
procedure
cellulose pulp
Prior art date
Application number
SE8008336A
Other languages
English (en)
Other versions
SE442880B (sv
Inventor
J R Bergstrom
Original Assignee
Mo Och Domsjoe 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 Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Priority to SE8008336A priority Critical patent/SE442880B/sv
Priority to FI813732A priority patent/FI73019C/sv
Priority to CA000390873A priority patent/CA1149111A/en
Priority to JP56190472A priority patent/JPS57121690A/ja
Priority to NO814024A priority patent/NO157223C/no
Publication of SE8008336L publication Critical patent/SE8008336L/sv
Publication of SE442880B publication Critical patent/SE442880B/sv

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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
SE8008336A 1980-11-27 1980-11-27 Forfarande for delignifiering/blekning av cellulosamassa med klordioxid/klor i samma steg SE442880B (sv)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE8008336A SE442880B (sv) 1980-11-27 1980-11-27 Forfarande for delignifiering/blekning av cellulosamassa med klordioxid/klor i samma steg
FI813732A FI73019C (sv) 1980-11-27 1981-11-23 Förfarande för delignifiering/blekning av cellulosamassa.
CA000390873A CA1149111A (en) 1980-11-27 1981-11-25 Process for delignifying and/or bleaching cellulose pulp
JP56190472A JPS57121690A (en) 1980-11-27 1981-11-26 Delignifying and/or bleaching of cellulose pulp
NO814024A NO157223C (no) 1980-11-27 1981-11-26 Fremgangsmaate ved delignifisering/bleking av cellulosemasse.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8008336A SE442880B (sv) 1980-11-27 1980-11-27 Forfarande for delignifiering/blekning av cellulosamassa med klordioxid/klor i samma steg

Publications (2)

Publication Number Publication Date
SE8008336L true SE8008336L (sv) 1982-05-28
SE442880B SE442880B (sv) 1986-02-03

Family

ID=20342344

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8008336A SE442880B (sv) 1980-11-27 1980-11-27 Forfarande for delignifiering/blekning av cellulosamassa med klordioxid/klor i samma steg

Country Status (5)

Country Link
JP (1) JPS57121690A (sv)
CA (1) CA1149111A (sv)
FI (1) FI73019C (sv)
NO (1) NO157223C (sv)
SE (1) SE442880B (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2033077C (en) * 1989-05-15 1996-08-27 Ronnie G. Hise Method for reducing chlorinated compounds produced during chlorination stage bleaching of pulp
US5268075A (en) * 1989-10-19 1993-12-07 North Carolina State University High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process

Also Published As

Publication number Publication date
NO157223C (no) 1988-02-10
FI73019B (fi) 1987-04-30
SE442880B (sv) 1986-02-03
FI73019C (sv) 1987-08-10
JPS6262199B2 (sv) 1987-12-25
JPS57121690A (en) 1982-07-29
NO814024L (no) 1982-05-28
NO157223B (no) 1987-11-02
CA1149111A (en) 1983-07-05
FI813732L (fi) 1982-05-28

Similar Documents

Publication Publication Date Title
ATE48290T1 (de) Verfahren zur delignifizierung und bleiche von zellstoffen.
SE8100373L (sv) Forfarande vid ozonblekning av pappersmassa
SE8101772L (sv) Forbettring av ljusheten hos ozonblekta pappersmassor
SE8003407L (sv) Forfarande vid syrgasblekning av cellulosamassa
ATE54475T1 (de) Verfahren zur bleiche und delignifizierung von zellstoffhaltigen produkten.
ES2086408T3 (es) Mejora en el blanqueo de una pasta.
ATE21133T1 (de) Verfahren zur herstellung von halbgebleichten zellstoffen.
NO912641L (no) Kontinuerlig, totrinns blekeprosess for papirmasse.
UA32560C2 (uk) Спосіб одержання целюлозних волокон зі зниженою схильністю до фібрилювання
NO163631C (no) Fremgangsmaate for peroksydbleking av celluloseholdig materiale.
SE8008336L (sv) Forfarande for delignifiering/blekning av cellulosamassa
SE7907850L (sv) Forfarande for fullstendig blekning av cellulosa
FI871089L (fi) Anvaendning av rldmtm1-6 och andra ligninolytiska enzymer.
SE8008337L (sv) Forfarande for delignifiering/blekning av cellulosamassa
DE69528660D1 (de) Bleichen von papierzellstoff
DE59705632D1 (de) Verfahren zur Herstellung von Papiermasse
SE9702583L (sv) Förfarande för massaframställning
FI930803A0 (fi) Process foer behandling av lignocellulosamassa samt en apparat foer att genomfoera processen
SE8904404L (sv) Saett att bleka massa
FR2158873A5 (en) Bleaching of wood cellulose - using nitrogen oxides
DE59704964D1 (de) Verfahren zur Herstellung von gebleichten Spezialzellstoffen
SE9503694D0 (sv) Blekning av massa
FI914252L (sv) Framställning av cellulosamassa
DE3674859D1 (de) Verfahren zur delignifizierung von zellulosematerialien.
ATE35433T1 (de) Verfahren zur bereitstellung von chemischen holzpulpen hinsichtlich der bleiche.

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8008336-3

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 8008336-3

Format of ref document f/p: F