AU647950B2 - Use of wash press for pulp alkali addition process - Google Patents

Use of wash press for pulp alkali addition process Download PDF

Info

Publication number
AU647950B2
AU647950B2 AU20954/92A AU2095492A AU647950B2 AU 647950 B2 AU647950 B2 AU 647950B2 AU 20954/92 A AU20954/92 A AU 20954/92A AU 2095492 A AU2095492 A AU 2095492A AU 647950 B2 AU647950 B2 AU 647950B2
Authority
AU
Australia
Prior art keywords
pulp
alkaline material
consistency
delignification
alkaline
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.)
Ceased
Application number
AU20954/92A
Other languages
English (en)
Other versions
AU2095492A (en
Inventor
Spencer W. Eachus
Bruce F Griggs
James C. Joseph
Christopher H. Matthews
Stuart T. Terrett
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 AU2095492A publication Critical patent/AU2095492A/en
Application granted granted Critical
Publication of AU647950B2 publication Critical patent/AU647950B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • 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)
AU20954/92A 1991-08-14 1992-08-12 Use of wash press for pulp alkali addition process Ceased AU647950B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74822291A 1991-08-14 1991-08-14
US748222 1991-08-14

Publications (2)

Publication Number Publication Date
AU2095492A AU2095492A (en) 1993-02-25
AU647950B2 true AU647950B2 (en) 1994-03-31

Family

ID=25008524

Family Applications (1)

Application Number Title Priority Date Filing Date
AU20954/92A Ceased AU647950B2 (en) 1991-08-14 1992-08-12 Use of wash press for pulp alkali addition process

Country Status (11)

Country Link
EP (1) EP0530881A1 (fi)
JP (1) JPH0726350B2 (fi)
KR (1) KR950013196B1 (fi)
CN (1) CN1070969A (fi)
AU (1) AU647950B2 (fi)
BR (1) BR9203170A (fi)
CA (1) CA2075875A1 (fi)
FI (1) FI923585A (fi)
NO (1) NO923163L (fi)
SE (1) SE9202338L (fi)
ZA (1) ZA926092B (fi)

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 (fi) * 2007-06-15 2011-10-31 Andritz Oy Menetelmä massan pesun yhteydessä sellutehtaalla
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
FI20115754A0 (fi) * 2011-03-22 2011-07-15 Andritz Oy Menetelmä ja järjestely kemiallisen massan käsittelemiseksi
KR102180512B1 (ko) * 2013-02-08 2020-11-19 게페 첼루로제 게엠베하 개선된 알파 셀룰로스 함량을 갖는 연재 크래프트 섬유 및 화학적 셀룰로스 제품의 생산에서의 그의 용도
WO2018022427A1 (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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
AU629294B2 (en) * 1989-02-10 1992-10-01 Pioneer Licensing, Inc. Oxygen delignification and enzyme treatment
AU7875491A (en) * 1991-04-18 1992-11-17 Union Camp Patent Holding, Inc. Pulp alkali addition process for high consistency oxygen delignification

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986004938A1 (en) * 1985-02-14 1986-08-28 Edward Francis Elton Method and apparatus for alkaline delignification of lignocellulosic fibrous materials
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU629294B2 (en) * 1989-02-10 1992-10-01 Pioneer Licensing, Inc. Oxygen delignification and 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
AU7875491A (en) * 1991-04-18 1992-11-17 Union Camp Patent Holding, Inc. Pulp alkali addition process for high consistency oxygen delignification

Also Published As

Publication number Publication date
NO923163D0 (no) 1992-08-13
ZA926092B (en) 1993-03-02
SE9202338D0 (sv) 1992-08-12
AU2095492A (en) 1993-02-25
CA2075875A1 (en) 1993-02-15
KR930004578A (ko) 1993-03-22
KR950013196B1 (ko) 1995-10-25
JPH0726350B2 (ja) 1995-03-22
EP0530881A1 (en) 1993-03-10
FI923585A (fi) 1993-02-15
NO923163L (no) 1993-02-15
JPH05195461A (ja) 1993-08-03
BR9203170A (pt) 1993-03-30
FI923585A0 (fi) 1992-08-11
SE9202338L (sv) 1993-02-15
CN1070969A (zh) 1993-04-14

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