CA1123249A - Reducing chemical transfer between treatment stages - Google Patents

Reducing chemical transfer between treatment stages

Info

Publication number
CA1123249A
CA1123249A CA343,436A CA343436A CA1123249A CA 1123249 A CA1123249 A CA 1123249A CA 343436 A CA343436 A CA 343436A CA 1123249 A CA1123249 A CA 1123249A
Authority
CA
Canada
Prior art keywords
pulp
mat
liquid phase
washer
fluid
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
CA343,436A
Other languages
English (en)
French (fr)
Inventor
Michael D. Meredith
Louis L. Edwards, Jr.
Keith T. Van Scotter
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
Application granted granted Critical
Publication of CA1123249A publication Critical patent/CA1123249A/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
    • D21C9/02—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)
CA343,436A 1979-01-11 1980-01-10 Reducing chemical transfer between treatment stages Expired CA1123249A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US249279A 1979-01-11 1979-01-11
US2,492 1979-01-11

Publications (1)

Publication Number Publication Date
CA1123249A true CA1123249A (en) 1982-05-11

Family

ID=21701039

Family Applications (1)

Application Number Title Priority Date Filing Date
CA343,436A Expired CA1123249A (en) 1979-01-11 1980-01-10 Reducing chemical transfer between treatment stages

Country Status (8)

Country Link
JP (1) JPS5598991A (US07714131-20100511-C00038.png)
AU (1) AU527540B2 (US07714131-20100511-C00038.png)
CA (1) CA1123249A (US07714131-20100511-C00038.png)
FI (1) FI800080A (US07714131-20100511-C00038.png)
FR (1) FR2446354A1 (US07714131-20100511-C00038.png)
NO (1) NO800041L (US07714131-20100511-C00038.png)
NZ (1) NZ192583A (US07714131-20100511-C00038.png)
SE (1) SE8000250L (US07714131-20100511-C00038.png)

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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1106842A (en) * 1965-01-25 1968-03-20 Electric Reduction Co Manufacture of cellulosic pulp
ZA761255B (en) * 1975-03-11 1977-03-30 Erco Envirotech Ltd Bleachplant operation
US4104114A (en) * 1977-05-05 1978-08-01 Erco Envirotech Ltd. Bleach plant operation

Also Published As

Publication number Publication date
NZ192583A (en) 1983-03-15
NO800041L (no) 1980-07-14
JPS5598991A (en) 1980-07-28
SE8000250L (sv) 1980-07-12
FR2446354A1 (fr) 1980-08-08
AU5456980A (en) 1980-07-17
FR2446354B1 (US07714131-20100511-C00038.png) 1984-10-12
FI800080A (fi) 1980-07-12
AU527540B2 (en) 1983-03-10

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Legal Events

Date Code Title Description
MKEX Expiry
MKEX Expiry

Effective date: 19990511