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CA926056A - Process of bleaching woodpulp - Google Patents

Process of bleaching woodpulp

Info

Publication number
CA926056A
CA926056A CA926056A CA926056DA CA926056A CA 926056 A CA926056 A CA 926056A CA 926056 A CA926056 A CA 926056A CA 926056D A CA926056D A CA 926056DA CA 926056 A CA926056 A CA 926056A
Authority
CA
Canada
Prior art keywords
woodpulp
bleaching
bleaching woodpulp
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
CA926056A
Inventor
L. Chollet Jean
Sepall Ola
C. Logan Kenneth
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA926056A publication Critical patent/CA926056A/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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
CA926056A 1966-01-10 1966-01-10 Process of bleaching woodpulp Expired CA926056A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA949518 1966-01-10

Publications (1)

Publication Number Publication Date
CA926056A true CA926056A (en) 1973-05-15

Family

ID=4142419

Family Applications (1)

Application Number Title Priority Date Filing Date
CA926056A Expired CA926056A (en) 1966-01-10 1966-01-10 Process of bleaching woodpulp

Country Status (1)

Country Link
CA (1) CA926056A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421242A1 (en) * 1978-03-30 1979-10-26 Erco Ind Ltd Enhanced bleaching of wood pulp suspensions - contg. dissolved organic cpds. using addition first of chlorine di:oxide and chlorine then of chlorine alone
FR2454478A1 (en) * 1979-04-16 1980-11-14 Erco Ind Ltd Two=stage pulp bleaching - using chlorine di:oxide and chlorine in first stage and chlorine alone in second state (SE 17.11.80)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421242A1 (en) * 1978-03-30 1979-10-26 Erco Ind Ltd Enhanced bleaching of wood pulp suspensions - contg. dissolved organic cpds. using addition first of chlorine di:oxide and chlorine then of chlorine alone
FR2454478A1 (en) * 1979-04-16 1980-11-14 Erco Ind Ltd Two=stage pulp bleaching - using chlorine di:oxide and chlorine in first stage and chlorine alone in second state (SE 17.11.80)

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