CA2081398C - Modification de la presse de lavage aux fins d'un processus de delignification a l'oxygene - Google Patents

Modification de la presse de lavage aux fins d'un processus de delignification a l'oxygene

Info

Publication number
CA2081398C
CA2081398C CA002081398A CA2081398A CA2081398C CA 2081398 C CA2081398 C CA 2081398C CA 002081398 A CA002081398 A CA 002081398A CA 2081398 A CA2081398 A CA 2081398A CA 2081398 C CA2081398 C CA 2081398C
Authority
CA
Canada
Prior art keywords
pulp
alkaline material
wash press
weight
consistency
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 - Fee Related
Application number
CA002081398A
Other languages
English (en)
Other versions
CA2081398A1 (fr
Inventor
William H. Friend
Stuart T. Terrett
Spencer W. Eachus
Bruce F. Griggs
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.)
Union Camp Patent Holding Inc
Original Assignee
Union Camp Patent Holding Inc
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 Union Camp Patent Holding Inc filed Critical Union Camp Patent Holding Inc
Publication of CA2081398A1 publication Critical patent/CA2081398A1/fr
Application granted granted Critical
Publication of CA2081398C publication Critical patent/CA2081398C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Television Systems (AREA)
  • Gas Separation By Absorption (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)
CA002081398A 1991-10-29 1992-10-26 Modification de la presse de lavage aux fins d'un processus de delignification a l'oxygene Expired - Fee Related CA2081398C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US784,184 1977-04-04
US78418491A 1991-10-29 1991-10-29

Publications (2)

Publication Number Publication Date
CA2081398A1 CA2081398A1 (fr) 1993-04-30
CA2081398C true CA2081398C (fr) 1997-03-25

Family

ID=25131607

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002081398A Expired - Fee Related CA2081398C (fr) 1991-10-29 1992-10-26 Modification de la presse de lavage aux fins d'un processus de delignification a l'oxygene

Country Status (14)

Country Link
EP (1) EP0540091B1 (fr)
JP (1) JPH05195466A (fr)
KR (1) KR960006125B1 (fr)
CN (1) CN1080343A (fr)
AT (1) ATE147808T1 (fr)
AU (1) AU647973B2 (fr)
BR (1) BR9204173A (fr)
CA (1) CA2081398C (fr)
DE (1) DE69216757D1 (fr)
FI (1) FI924751A (fr)
NO (1) NO924080L (fr)
NZ (1) NZ244837A (fr)
SE (1) SE9203113L (fr)
ZA (1) ZA928294B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6641498A (en) 1997-03-07 1998-09-22 Akzo Nobel N.V. Process for treating wastewater
EP0863113A1 (fr) * 1997-03-07 1998-09-09 Akzo Nobel N.V. Procédé pour le traitement d'eau résiduaire
FI122241B (fi) * 2007-06-15 2011-10-31 Andritz Oy Menetelmä massan pesun yhteydessä sellutehtaalla
CA2802237C (fr) 2010-06-10 2018-02-13 Packaging Corporation Of America Procede de fabrication de pate pour support ondule

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62501921A (ja) * 1985-02-14 1987-07-30 エルトン，エドワ−ド　フランシス リグノセルロ−ス繊維状物質のアルカリ脱リグニン方法と装置
US5173153A (en) * 1991-01-03 1992-12-22 Union Camp Patent Holding, Inc. Process for enhanced oxygen delignification using high consistency and a split alkali addition
US5085734A (en) * 1989-02-15 1992-02-04 Union Camp Patent Holding, Inc. Methods of high consistency oxygen delignification using a low consistency alkali pretreatment
JPH02289194A (ja) * 1989-04-20 1990-11-29 Mitsubishi Paper Mills Ltd リグノセルロース物質の酸素漂白法

Also Published As

Publication number Publication date
SE9203113L (sv) 1993-04-30
ZA928294B (en) 1993-05-18
KR930008238A (ko) 1993-05-21
CN1080343A (zh) 1994-01-05
AU2716892A (en) 1993-05-20
ATE147808T1 (de) 1997-02-15
EP0540091B1 (fr) 1997-01-15
CA2081398A1 (fr) 1993-04-30
BR9204173A (pt) 1993-05-04
SE9203113D0 (sv) 1992-10-23
NZ244837A (en) 1994-10-26
FI924751A (fi) 1993-04-30
NO924080D0 (no) 1992-10-21
DE69216757D1 (de) 1997-02-27
FI924751A0 (fi) 1992-10-20
NO924080L (no) 1993-04-30
KR960006125B1 (ko) 1996-05-09
EP0540091A1 (fr) 1993-05-05
AU647973B2 (en) 1994-03-31
JPH05195466A (ja) 1993-08-03

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 19981026