CA2005369A1 - Process for improved alkaline oxidative delignification of cellulose pulp - Google Patents

Process for improved alkaline oxidative delignification of cellulose pulp

Info

Publication number
CA2005369A1
CA2005369A1 CA002005369A CA2005369A CA2005369A1 CA 2005369 A1 CA2005369 A1 CA 2005369A1 CA 002005369 A CA002005369 A CA 002005369A CA 2005369 A CA2005369 A CA 2005369A CA 2005369 A1 CA2005369 A1 CA 2005369A1
Authority
CA
Canada
Prior art keywords
pulp
oxygen
weight percent
operated
nitrosating agent
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002005369A
Other languages
English (en)
French (fr)
Inventor
Madhusudan D. Jayawant
Rupert D'souza
Jeffery S. Hsieh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of CA2005369A1 publication Critical patent/CA2005369A1/en
Abandoned legal-status Critical Current

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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds

Landscapes

  • Paper (AREA)
CA002005369A 1988-12-20 1989-12-13 Process for improved alkaline oxidative delignification of cellulose pulp Abandoned CA2005369A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28678288A 1988-12-20 1988-12-20
US286,782 1988-12-20

Publications (1)

Publication Number Publication Date
CA2005369A1 true CA2005369A1 (en) 1990-06-20

Family

ID=23100136

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002005369A Abandoned CA2005369A1 (en) 1988-12-20 1989-12-13 Process for improved alkaline oxidative delignification of cellulose pulp

Country Status (9)

Country Link
EP (1) EP0377981A3 (da)
JP (1) JPH02216290A (da)
AU (1) AU4699989A (da)
BR (1) BR8906570A (da)
CA (1) CA2005369A1 (da)
DK (1) DK648589A (da)
FI (1) FI896085A0 (da)
NO (1) NO895108L (da)
ZA (1) ZA899775B (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006056A3 (fr) * 1992-07-06 1994-05-03 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.
WO2021209586A1 (en) * 2020-04-16 2021-10-21 Bim Kemi Ab Delignification process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE434283B (sv) * 1982-12-01 1984-07-16 Mo Och Domsjoe Ab Forfarande for delignifiering av cellulosamassa med kveveoxider och syrgas

Also Published As

Publication number Publication date
DK648589A (da) 1990-06-21
NO895108D0 (no) 1989-12-19
AU4699989A (en) 1990-06-28
ZA899775B (en) 1991-08-28
JPH02216290A (ja) 1990-08-29
FI896085A0 (fi) 1989-12-19
BR8906570A (pt) 1990-09-04
NO895108L (no) 1990-06-21
DK648589D0 (da) 1989-12-19
EP0377981A2 (en) 1990-07-18
EP0377981A3 (en) 1992-06-24

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Legal Events

Date Code Title Description
FZDE Dead