FR2446354A1 - Procede de lavage d'une pulpe cellulosique de bois - Google Patents

Procede de lavage d'une pulpe cellulosique de bois

Info

Publication number
FR2446354A1
FR2446354A1 FR8000608A FR8000608A FR2446354A1 FR 2446354 A1 FR2446354 A1 FR 2446354A1 FR 8000608 A FR8000608 A FR 8000608A FR 8000608 A FR8000608 A FR 8000608A FR 2446354 A1 FR2446354 A1 FR 2446354A1
Authority
FR
France
Prior art keywords
fluid
liquid phase
chemicals
processing operations
applying
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
FR8000608A
Other languages
English (en)
French (fr)
Other versions
FR2446354B1 (it
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.)
Weyerhaeuser Co
Original Assignee
Weyerhaeuser 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 Weyerhaeuser Co filed Critical Weyerhaeuser Co
Publication of FR2446354A1 publication Critical patent/FR2446354A1/fr
Application granted granted Critical
Publication of FR2446354B1 publication Critical patent/FR2446354B1/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
    • 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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • 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
    • D21C9/1073—Bleaching ; Apparatus therefor with O3

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FR8000608A 1979-01-11 1980-01-11 Procede de lavage d'une pulpe cellulosique de bois Granted FR2446354A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US249279A 1979-01-11 1979-01-11

Publications (2)

Publication Number Publication Date
FR2446354A1 true FR2446354A1 (fr) 1980-08-08
FR2446354B1 FR2446354B1 (it) 1984-10-12

Family

ID=21701039

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8000608A Granted FR2446354A1 (fr) 1979-01-11 1980-01-11 Procede de lavage d'une pulpe cellulosique de bois

Country Status (8)

Country Link
JP (1) JPS5598991A (it)
AU (1) AU527540B2 (it)
CA (1) CA1123249A (it)
FI (1) FI800080A (it)
FR (1) FR2446354A1 (it)
NO (1) NO800041L (it)
NZ (1) NZ192583A (it)
SE (1) SE8000250L (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE426607B (sv) * 1982-03-29 1983-01-31 Kamyr Ab Sett att behandla en massasuspension som er i rorelse lengs en bana medelst fortrengning av massans suspensionsvetska med en eller flera ersettningsvetskor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1465295A (fr) * 1965-01-25 1967-01-06 Electric Reduction Co Blanchiment de pâte cellulosique fibreuse brute
FR2303896A1 (fr) * 1975-03-11 1976-10-08 Erco Envirotech Ltd Recuperation des effluents et filtrats liquides d'installations de blanchiment
US4104114A (en) * 1977-05-05 1978-08-01 Erco Envirotech Ltd. Bleach plant operation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1465295A (fr) * 1965-01-25 1967-01-06 Electric Reduction Co Blanchiment de pâte cellulosique fibreuse brute
FR2303896A1 (fr) * 1975-03-11 1976-10-08 Erco Envirotech Ltd Recuperation des effluents et filtrats liquides d'installations de blanchiment
US4104114A (en) * 1977-05-05 1978-08-01 Erco Envirotech Ltd. Bleach plant operation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/77 *
EXBK/78 *

Also Published As

Publication number Publication date
CA1123249A (en) 1982-05-11
FR2446354B1 (it) 1984-10-12
AU5456980A (en) 1980-07-17
NZ192583A (en) 1983-03-15
AU527540B2 (en) 1983-03-10
FI800080A (fi) 1980-07-12
JPS5598991A (en) 1980-07-28
NO800041L (no) 1980-07-14
SE8000250L (sv) 1980-07-12

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Legal Events

Date Code Title Description
ST Notification of lapse