CA1088261A - Process for the delignification of a cellulose- containing material with an oxidizing gas in an aklaline milieu - Google Patents

Process for the delignification of a cellulose- containing material with an oxidizing gas in an aklaline milieu

Info

Publication number
CA1088261A
CA1088261A CA248,067A CA248067A CA1088261A CA 1088261 A CA1088261 A CA 1088261A CA 248067 A CA248067 A CA 248067A CA 1088261 A CA1088261 A CA 1088261A
Authority
CA
Canada
Prior art keywords
oxygen
transferring agent
delignification
lignin
material containing
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.)
Expired
Application number
CA248,067A
Other languages
English (en)
French (fr)
Inventor
Eero V. Sjostrom
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.)
Ahlstrom Corp
Original Assignee
Ahlstrom Corp
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 Ahlstrom Corp filed Critical Ahlstrom Corp
Application granted granted Critical
Publication of CA1088261A publication Critical patent/CA1088261A/en
Expired 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping processes
    • 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
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Gas Separation By Absorption (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CA248,067A 1975-03-18 1976-03-17 Process for the delignification of a cellulose- containing material with an oxidizing gas in an aklaline milieu Expired CA1088261A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI750799 1975-03-18
FI750799A FI51833C (US08124630-20120228-C00152.png) 1975-03-18 1975-03-18

Publications (1)

Publication Number Publication Date
CA1088261A true CA1088261A (en) 1980-10-28

Family

ID=8509062

Family Applications (1)

Application Number Title Priority Date Filing Date
CA248,067A Expired CA1088261A (en) 1975-03-18 1976-03-17 Process for the delignification of a cellulose- containing material with an oxidizing gas in an aklaline milieu

Country Status (7)

Country Link
JP (1) JPS51119801A (US08124630-20120228-C00152.png)
CA (1) CA1088261A (US08124630-20120228-C00152.png)
DE (1) DE2610891A1 (US08124630-20120228-C00152.png)
FI (1) FI51833C (US08124630-20120228-C00152.png)
FR (1) FR2304718A1 (US08124630-20120228-C00152.png)
NO (1) NO760908L (US08124630-20120228-C00152.png)
SE (1) SE428939B (US08124630-20120228-C00152.png)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036680A (en) * 1976-12-14 1977-07-19 Canadian Industries, Ltd. Delignification of lignocellulosic material with a soda pulping liquor containing a Diels Alder adduct of benzoquinone or naphthoquinone in admixture with a nitro aromatic compound
CA1094264A (en) * 1976-12-14 1981-01-27 Canadian Industries Limited Delignification of lignocellulosic material with a soda liquor containing a cyclic keto compound and a nitro aromatic compound
US4036681A (en) * 1976-12-14 1977-07-19 Canadian Industries, Ltd. Delignification of lignocellulosic material with an alkaline pulping liquor containing a Diels Alder adduct of benzoquinone or naphthoquinone
JPS5512806A (en) * 1978-07-04 1980-01-29 Oji Paper Co Alkali pulp producing method
SE413785B (sv) * 1978-09-22 1980-06-23 Mo Och Domsjoe Ab Forfarande for uppslutning av lignocellulosahaltiga material genom alkalisk kokning i nervaro av ett tillsatsemne av redoxtyp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI52877B (US08124630-20120228-C00152.png) * 1972-11-16 1977-08-31 Ahlstroem Oy

Also Published As

Publication number Publication date
DE2610891A1 (de) 1976-09-30
FI51833C (US08124630-20120228-C00152.png) 1978-01-24
FR2304718A1 (fr) 1976-10-15
FI51833B (US08124630-20120228-C00152.png) 1976-12-31
FR2304718B1 (US08124630-20120228-C00152.png) 1979-08-31
FI750799A (US08124630-20120228-C00152.png) 1976-09-19
SE7603352L (sv) 1976-09-19
SE428939B (sv) 1983-08-01
NO760908L (US08124630-20120228-C00152.png) 1976-09-21
JPS51119801A (en) 1976-10-20

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Legal Events

Date Code Title Description
MKEX Expiry