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 (zh)
JP (1) JPH0726350B2 (zh)
KR (1) KR950013196B1 (zh)
CN (1) CN1070969A (zh)
AU (1) AU647950B2 (zh)
BR (1) BR9203170A (zh)
CA (1) CA2075875A1 (zh)
FI (1) FI923585A (zh)
NO (1) NO923163L (zh)
SE (1) SE9202338L (zh)
ZA (1) ZA926092B (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2311718A1 (en) * 1999-06-14 2000-12-14 Praxair Technology, Inc. Oxygen delignification of lignocellulosic material
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
BR112015018492A2 (pt) * 2013-02-08 2017-07-18 Gp Cellulose Gmbh fibra kraft e método para fazer polpa kraft oxidada
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
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
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
EP0530881A1 (en) 1993-03-10
FI923585A0 (fi) 1992-08-11
SE9202338D0 (sv) 1992-08-12
ZA926092B (en) 1993-03-02
CA2075875A1 (en) 1993-02-15
FI923585A (fi) 1993-02-15
JPH05195461A (ja) 1993-08-03
AU2095492A (en) 1993-02-25
NO923163L (no) 1993-02-15
JPH0726350B2 (ja) 1995-03-22
CN1070969A (zh) 1993-04-14
KR930004578A (ko) 1993-03-22
SE9202338L (sv) 1993-02-15
NO923163D0 (no) 1992-08-13
KR950013196B1 (ko) 1995-10-25
AU647950B2 (en) 1994-03-31

Similar Documents

Publication Publication Date Title
DE69120976D1 (de) Herstellung von Polydiorganosiloxanen mit Alkoxysilethylenendgruppen
PT93831A (pt) Processo de preparacao de perfluropolieteres peroxidicos
BR8406932A (pt) Processo para produzir oxigenio com pureza minima de ate cerca de 96% e aparelho para separar oxigenio do ar com pureza minima de 96%
DE69018071D1 (de) Herstellung von peroxysäuren.
DE69116826D1 (de) Herstellung von Alkoxyalkansäuren
BR8000977A (pt) Processo de preparacao de esteres de acidos arilaceticos das alfa-halo-alquilarilcetonas
BR8605363A (pt) Aparelho para tratar uma suspensao de fibra
IT1224290B (it) Apparecchiatura per produrre filato
EP0256852A3 (en) Production of urethanes used to treat carbon fibers
BR7901299A (pt) Processo para a producao de uma estrutura de fibra e respectiva estrutura de fibra
BR9203170A (pt) Processo para obter uma seletividade de deslignificacao melhorada da polpa durante uma deslignificacao com oxigenio de elevada consistencia
IT1224292B (it) Apparecchiatura per produrre filato
BR8907469A (pt) Processo para produzir uma costura
BR8801834A (pt) Processo para produzir uma lactona
BR8700990A (pt) Processo para preparar uma composicao de organopolisiloxano
DE3875281D1 (de) Herstellung von pseudoiononen.
AT377792B (de) Spinnkopf zur herstellung von mehrkomponentenfaeden
DE69423788D1 (de) Herstellung von kupferstäben
GB8620913D0 (en) Hollow cellulose ester fibre
DE69213637D1 (de) Herstellung von 2-Hydroxymandelsäuren und 2-Hydroxybenzaldehyden
DE3679213D1 (de) Herstellung von estern der butandikarbonsaeure.
BR8801522A (pt) Processo para preparar um ester de acido 1 terc-alquil-5-ciano-1h-pirazol-4-carboxilico
DE3579284D1 (de) Herstellung von l-karnitin.
DE69216606D1 (de) Herstellung von teigwaren
BR8705254A (pt) Licor de polpacao e processo para producao de polpa lignocelulosica

Legal Events

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