FR2304718A1 - Procede de delignification de materiaux contenant de la lignine - Google Patents

Procede de delignification de materiaux contenant de la lignine

Info

Publication number
FR2304718A1
FR2304718A1 FR7607856A FR7607856A FR2304718A1 FR 2304718 A1 FR2304718 A1 FR 2304718A1 FR 7607856 A FR7607856 A FR 7607856A FR 7607856 A FR7607856 A FR 7607856A FR 2304718 A1 FR2304718 A1 FR 2304718A1
Authority
FR
France
Prior art keywords
delignification
salts
contg
materials containing
gas
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.)
Granted
Application number
FR7607856A
Other languages
English (en)
French (fr)
Other versions
FR2304718B1 (enrdf_load_stackoverflow
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
Publication of FR2304718A1 publication Critical patent/FR2304718A1/fr
Application granted granted Critical
Publication of FR2304718B1 publication Critical patent/FR2304718B1/fr
Granted 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)
  • Gas Separation By Absorption (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
FR7607856A 1975-03-18 1976-03-18 Procede de delignification de materiaux contenant de la lignine Granted FR2304718A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI750799A FI51833C (enrdf_load_stackoverflow) 1975-03-18 1975-03-18

Publications (2)

Publication Number Publication Date
FR2304718A1 true FR2304718A1 (fr) 1976-10-15
FR2304718B1 FR2304718B1 (enrdf_load_stackoverflow) 1979-08-31

Family

ID=8509062

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7607856A Granted FR2304718A1 (fr) 1975-03-18 1976-03-18 Procede de delignification de materiaux contenant de la lignine

Country Status (7)

Country Link
JP (1) JPS51119801A (enrdf_load_stackoverflow)
CA (1) CA1088261A (enrdf_load_stackoverflow)
DE (1) DE2610891A1 (enrdf_load_stackoverflow)
FI (1) FI51833C (enrdf_load_stackoverflow)
FR (1) FR2304718A1 (enrdf_load_stackoverflow)
NO (1) NO760908L (enrdf_load_stackoverflow)
SE (1) SE428939B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436845A1 (fr) * 1978-09-22 1980-04-18 Mo Och Domsjoe Ab Procede de preparation de pulpe de cellulose par delignification de matieres lignocellulosiques

Families Citing this family (4)

* 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

Family Cites Families (1)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436845A1 (fr) * 1978-09-22 1980-04-18 Mo Och Domsjoe Ab Procede de preparation de pulpe de cellulose par delignification de matieres lignocellulosiques

Also Published As

Publication number Publication date
FI51833C (enrdf_load_stackoverflow) 1978-01-24
FI51833B (enrdf_load_stackoverflow) 1976-12-31
FR2304718B1 (enrdf_load_stackoverflow) 1979-08-31
JPS51119801A (en) 1976-10-20
SE428939B (sv) 1983-08-01
CA1088261A (en) 1980-10-28
SE7603352L (sv) 1976-09-19
DE2610891A1 (de) 1976-09-30
NO760908L (enrdf_load_stackoverflow) 1976-09-21
FI750799A7 (enrdf_load_stackoverflow) 1976-09-19

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Legal Events

Date Code Title Description
ST Notification of lapse