CA849982A - Process for producing wood pulp - Google Patents

Process for producing wood pulp

Info

Publication number
CA849982A
CA849982A CA849982A CA849982DA CA849982A CA 849982 A CA849982 A CA 849982A CA 849982 A CA849982 A CA 849982A CA 849982D A CA849982D A CA 849982DA CA 849982 A CA849982 A CA 849982A
Authority
CA
Canada
Prior art keywords
wood pulp
producing wood
producing
pulp
wood
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
CA849982A
Other languages
English (en)
Inventor
M. Clayton David
M. A. T. De Montigny Raimbault
Liebergott Norman
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.)
Pulp and Paper Research Institute of Canada
Original Assignee
Pulp and Paper Research Institute of Canada
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 Pulp and Paper Research Institute of Canada filed Critical Pulp and Paper Research Institute of Canada
Application granted granted Critical
Publication of CA849982A publication Critical patent/CA849982A/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
    • 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
    • D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA849982A 1967-12-15 1967-12-15 Process for producing wood pulp Expired CA849982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA7696 1967-12-15

Publications (1)

Publication Number Publication Date
CA849982A true CA849982A (en) 1970-08-25

Family

ID=4083942

Family Applications (1)

Application Number Title Priority Date Filing Date
CA849982A Expired CA849982A (en) 1967-12-15 1967-12-15 Process for producing wood pulp

Country Status (4)

Country Link
US (1) US3617432A (enrdf_load_stackoverflow)
CA (1) CA849982A (enrdf_load_stackoverflow)
FI (1) FI53007B (enrdf_load_stackoverflow)
SE (1) SE358679B (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3102077A (en) * 1976-12-01 1979-06-07 New Zealand Dev Finance Treating lignocellulosic or cellulosic pulp
SE422818B (sv) * 1978-03-31 1982-03-29 Modo Chemetrics Ab Forfarande for foredling av allulosamassa genom blekning eller extrahering
US20030150065A1 (en) * 1998-12-30 2003-08-14 Sheng-Hsin Hu Liquid ammonia explosion treatment of wood fibers
US8262850B2 (en) * 2003-09-23 2012-09-11 International Paper Company Chemical activation and refining of southern pine kraft fibers
ES2521067T3 (es) 2005-05-02 2014-11-12 International Paper Company Materiales lignocelulósicos y productos hechos a partir de los mismos
MX2019011312A (es) 2017-03-21 2019-11-12 Int Paper Co Composicion de pulpa para el control del olor.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1890179A (en) * 1928-06-15 1932-12-06 Champion Fibre Company Preparing refined bleached pulp
US2186034A (en) * 1937-08-24 1940-01-09 Champion Paper & Fibre Co Pulp bleaching and refining process
CA752864A (en) * 1965-10-12 1967-02-14 Pulp And Paper Research Institute Of Canada Extraction of fibrous cellulosic material with ammonia following treatment with chlorine, chlorine dioxide or other reagents

Also Published As

Publication number Publication date
US3617432A (en) 1971-11-02
FI53007B (enrdf_load_stackoverflow) 1977-09-30
SE358679B (enrdf_load_stackoverflow) 1973-08-06

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