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DE69216757D1 - Modifikation von einer Waschpresse zur Delignifizierung mittels Sauerstoff - Google Patents

Modifikation von einer Waschpresse zur Delignifizierung mittels Sauerstoff

Info

Publication number
DE69216757D1
DE69216757D1 DE69216757T DE69216757T DE69216757D1 DE 69216757 D1 DE69216757 D1 DE 69216757D1 DE 69216757 T DE69216757 T DE 69216757T DE 69216757 T DE69216757 T DE 69216757T DE 69216757 D1 DE69216757 D1 DE 69216757D1
Authority
DE
Germany
Prior art keywords
pulp
oxygen
consistency
delignification
alkaline material
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 - Lifetime
Application number
DE69216757T
Other languages
English (en)
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
Application granted granted Critical
Publication of DE69216757D1 publication Critical patent/DE69216757D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Detergent Compositions (AREA)
  • Cleaning By Liquid Or Steam (AREA)
DE69216757T 1991-10-29 1992-10-22 Modifikation von einer Waschpresse zur Delignifizierung mittels Sauerstoff Expired - Lifetime DE69216757D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78418491A 1991-10-29 1991-10-29

Publications (1)

Publication Number Publication Date
DE69216757D1 true DE69216757D1 (de) 1997-02-27

Family

ID=25131607

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69216757T Expired - Lifetime DE69216757D1 (de) 1991-10-29 1992-10-22 Modifikation von einer Waschpresse zur Delignifizierung mittels Sauerstoff

Country Status (14)

Country Link
EP (1) EP0540091B1 (de)
JP (1) JPH05195466A (de)
KR (1) KR960006125B1 (de)
CN (1) CN1080343A (de)
AT (1) ATE147808T1 (de)
AU (1) AU647973B2 (de)
BR (1) BR9204173A (de)
CA (1) CA2081398C (de)
DE (1) DE69216757D1 (de)
FI (1) FI924751A7 (de)
NO (1) NO924080L (de)
NZ (1) NZ244837A (de)
SE (1) SE9203113L (de)
ZA (1) ZA928294B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0863113A1 (de) * 1997-03-07 1998-09-09 Akzo Nobel N.V. Verfahren zur Aufbereitung von Abwasser
AU6641498A (en) 1997-03-07 1998-09-22 Akzo Nobel N.V. Process for treating wastewater
FI122241B (fi) * 2007-06-15 2011-10-31 Andritz Oy Menetelmä massan pesun yhteydessä sellutehtaalla
WO2011156708A1 (en) * 2010-06-10 2011-12-15 Packaging Corporation Of America Method of manufacturing pulp for corrugated medium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI864154A7 (fi) * 1985-02-14 1986-10-14 Edward Francis Elton Menetelmä ja laitteisto ligniinin alkaliseksi poistamiseksi lignosellu loosaa käsittävistä kuitumateriaaleista.
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
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
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
NO924080L (no) 1993-04-30
CA2081398C (en) 1997-03-25
SE9203113D0 (sv) 1992-10-23
FI924751A0 (fi) 1992-10-20
JPH05195466A (ja) 1993-08-03
BR9204173A (pt) 1993-05-04
EP0540091B1 (de) 1997-01-15
AU2716892A (en) 1993-05-20
NO924080D0 (no) 1992-10-21
CN1080343A (zh) 1994-01-05
ZA928294B (en) 1993-05-18
NZ244837A (en) 1994-10-26
EP0540091A1 (de) 1993-05-05
ATE147808T1 (de) 1997-02-15
KR960006125B1 (ko) 1996-05-09
FI924751A7 (fi) 1993-04-30
SE9203113L (sv) 1993-04-30
CA2081398A1 (en) 1993-04-30
AU647973B2 (en) 1994-03-31
KR930008238A (ko) 1993-05-21

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Legal Events

Date Code Title Description
8332 No legal effect for de