SE9202338L - Anvaendning av tvaettpress foer tillfoerande av alkali i en massaprocess - Google Patents

Anvaendning av tvaettpress foer tillfoerande av alkali i en massaprocess

Info

Publication number
SE9202338L
SE9202338L SE9202338A SE9202338A SE9202338L SE 9202338 L SE9202338 L SE 9202338L SE 9202338 A SE9202338 A SE 9202338A SE 9202338 A SE9202338 A SE 9202338A SE 9202338 L SE9202338 L SE 9202338L
Authority
SE
Sweden
Prior art keywords
pulp
consistency
application
alkali
oxygen
Prior art date
Application number
SE9202338A
Other languages
Unknown language ( )
English (en)
Other versions
SE9202338D0 (sv
Inventor
J C Joseph
C H Matthews
S T Terrett
S W Eachus
B F Griggs
Original Assignee
Union Camp Patent Holding
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 filed Critical Union Camp Patent Holding
Publication of SE9202338D0 publication Critical patent/SE9202338D0/sv
Publication of SE9202338L publication Critical patent/SE9202338L/sv

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
    • D21C9/1005—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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE9202338A 1991-08-14 1992-08-12 Anvaendning av tvaettpress foer tillfoerande av alkali i en massaprocess SE9202338L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74822291A 1991-08-14 1991-08-14

Publications (2)

Publication Number Publication Date
SE9202338D0 SE9202338D0 (sv) 1992-08-12
SE9202338L true SE9202338L (sv) 1993-02-15

Family

ID=25008524

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9202338A SE9202338L (sv) 1991-08-14 1992-08-12 Anvaendning av tvaettpress foer tillfoerande av alkali i en massaprocess

Country Status (11)

Country Link
EP (1) EP0530881A1 (sv)
JP (1) JPH0726350B2 (sv)
KR (1) KR950013196B1 (sv)
CN (1) CN1070969A (sv)
AU (1) AU647950B2 (sv)
BR (1) BR9203170A (sv)
CA (1) CA2075875A1 (sv)
FI (1) FI923585L (sv)
NO (1) NO923163L (sv)
SE (1) SE9202338L (sv)
ZA (1) ZA926092B (sv)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20003014L (no) * 1999-06-14 2000-12-15 Praxair Technology Inc Oksygendelignifisering av lignocellulosemateriale
FI122241B (sv) * 2007-06-15 2011-10-31 Andritz Oy Förfarande i samband med massatvättning på en massafabrik
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
FI20115754A0 (sv) * 2011-03-22 2011-07-15 Andritz Oy Förfarande och arrangemang för behandling av kemisk massa
CA2898417C (en) * 2013-02-08 2021-07-27 Arthur J. Nonni Softwood kraft fiber having an improved .alpha.-cellulose content and its use in the production of chemical cellulose products
US20180030651A1 (en) * 2016-07-27 2018-02-01 Ecolab USA, Inc. Method and compositions for oxygen delignification of chemical pulp
SE544255C2 (en) * 2020-09-03 2022-03-15 Valmet Oy System for producing cellulose pulp and method for controlling such a system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0211945A4 (en) * 1985-02-14 1987-07-06 Edward Francis Elton METHOD AND DEVICE FOR ALKALINE DELIGNIFICATION OF LIGNOCELLULOSE FIBER MATERIAL.
US5179021A (en) * 1989-02-10 1993-01-12 Gil Inc. (Now Ici Canada Inc.) Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment
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
EP0539381A4 (en) * 1991-04-18 1994-10-12 Union Camp Patent Holding Gradual addition of alkali in high consistency oxygen delignification.

Also Published As

Publication number Publication date
AU647950B2 (en) 1994-03-31
NO923163L (no) 1993-02-15
FI923585A7 (sv) 1993-02-15
KR930004578A (ko) 1993-03-22
EP0530881A1 (en) 1993-03-10
AU2095492A (en) 1993-02-25
FI923585L (fi) 1993-02-15
KR950013196B1 (ko) 1995-10-25
SE9202338D0 (sv) 1992-08-12
CN1070969A (zh) 1993-04-14
BR9203170A (pt) 1993-03-30
JPH05195461A (ja) 1993-08-03
JPH0726350B2 (ja) 1995-03-22
CA2075875A1 (en) 1993-02-15
FI923585A0 (fi) 1992-08-11
NO923163D0 (no) 1992-08-13
ZA926092B (en) 1993-03-02

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