BR9203170A - Processo para obter uma seletividade de deslignificacao melhorada da polpa durante uma deslignificacao com oxigenio de elevada consistencia - Google Patents

Processo para obter uma seletividade de deslignificacao melhorada da polpa durante uma deslignificacao com oxigenio de elevada consistencia

Info

Publication number
BR9203170A
BR9203170A BR929203170A BR9203170A BR9203170A BR 9203170 A BR9203170 A BR 9203170A BR 929203170 A BR929203170 A BR 929203170A BR 9203170 A BR9203170 A BR 9203170A BR 9203170 A BR9203170 A BR 9203170A
Authority
BR
Brazil
Prior art keywords
improved
high consistency
pulp during
consistency oxygen
selectivity
Prior art date
Application number
BR929203170A
Other languages
English (en)
Portuguese (pt)
Inventor
James C Joseph
Christopher H Matthews
Stuarat T Terrett
Spencer W Eachus
Eachus Bruce 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 BR9203170A publication Critical patent/BR9203170A/pt

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)
BR929203170A 1991-08-14 1992-08-14 Processo para obter uma seletividade de deslignificacao melhorada da polpa durante uma deslignificacao com oxigenio de elevada consistencia BR9203170A (pt)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BR9203170A true BR9203170A (pt) 1993-03-30

Family

ID=25008524

Family Applications (1)

Application Number Title Priority Date Filing Date
BR929203170A BR9203170A (pt) 1991-08-14 1992-08-14 Processo para obter uma seletividade de deslignificacao melhorada da polpa durante uma deslignificacao com oxigenio de elevada consistencia

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

Family Cites Families (5)

* 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
US5179021A (en) * 1989-02-10 1993-01-12 Gil Inc. (Now Ici Canada Inc.) Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment
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
CA2069447C (en) * 1991-04-18 1996-08-27 Bruce F. Griggs Pulp alkali addition process for high consistency oxygen delignification

Also Published As

Publication number Publication date
AU647950B2 (en) 1994-03-31
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
FI923585A0 (fi) 1992-08-11
SE9202338L (sv) 1993-02-15
CN1070969A (zh) 1993-04-14

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Legal Events

Date Code Title Description
EE Request for examination
FD5 Application fees: dismissal - article 86 of industrial property law