BR9406763A - Processo de tratamento de polpa de papel quimica - Google Patents

Processo de tratamento de polpa de papel quimica

Info

Publication number
BR9406763A
BR9406763A BR9406763A BR9406763A BR9406763A BR 9406763 A BR9406763 A BR 9406763A BR 9406763 A BR9406763 A BR 9406763A BR 9406763 A BR9406763 A BR 9406763A BR 9406763 A BR9406763 A BR 9406763A
Authority
BR
Brazil
Prior art keywords
pulp
treating
paper pulp
treatment process
chemical paper
Prior art date
Application number
BR9406763A
Other languages
English (en)
Inventor
Anders Bnergqvist
Lars Ove Larsson
Erik Nilsson
Petter Tibbling
Original Assignee
Kvaemer Pulping Technologies A
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20390220&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9406763(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kvaemer Pulping Technologies A filed Critical Kvaemer Pulping Technologies A
Publication of BR9406763A publication Critical patent/BR9406763A/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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
BR9406763A 1993-06-08 1994-05-18 Processo de tratamento de polpa de papel quimica BR9406763A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9301984A SE501253C2 (sv) 1993-06-08 1993-06-08 Klorfri blekning av kemisk pappersmassa
PCT/SE1994/000462 WO1994029512A1 (en) 1993-06-08 1994-05-18 Method of bleaching pulp without using chlorine chemicals

Publications (1)

Publication Number Publication Date
BR9406763A true BR9406763A (pt) 1996-03-05

Family

ID=20390220

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9406763A BR9406763A (pt) 1993-06-08 1994-05-18 Processo de tratamento de polpa de papel quimica

Country Status (9)

Country Link
US (1) US6325891B1 (pt)
EP (1) EP0702735B1 (pt)
AT (1) ATE183264T1 (pt)
AU (1) AU6986294A (pt)
BR (1) BR9406763A (pt)
CA (1) CA2163116C (pt)
DE (1) DE69420035T2 (pt)
SE (1) SE501253C2 (pt)
WO (1) WO1994029512A1 (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996025552A1 (en) 1995-02-17 1996-08-22 Ahlstrom Machinery Oy Method of pretreating pulp to be bleached with peroxide
US5672247A (en) * 1995-03-03 1997-09-30 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5736004A (en) * 1995-03-03 1998-04-07 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
SE514947C2 (sv) * 1998-09-09 2001-05-21 Valmet Fibertech Ab Blekning av massa med ozon innefattande oxalsyratillsats
FR2910027B1 (fr) * 2006-12-13 2009-11-06 Itt Mfg Enterprises Inc Procede de blanchiment des pates papeteries chimiques par traitement final a l'ozone a haute temperature

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO144711C (no) * 1978-04-04 1981-10-21 Myrens Verksted As Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon
EP0402335B2 (en) * 1989-06-06 2001-03-14 Eka Chemicals AB Process for bleaching lignocellulose-containing pulps
AU636173B2 (en) * 1989-10-30 1993-04-22 Lenzing Aktiengesellschaft Method for the chlorine-free bleaching of pulps
SE469842C (sv) * 1992-01-21 1995-09-22 Sunds Defibrator Ind Ab Blekning av kemisk massa med peroxid
SE9201477L (sv) * 1992-05-11 1993-06-28 Kamyr Ab Saett vid blekning av massa utan anvaendning av klorkemikalier
US5401362A (en) * 1993-03-24 1995-03-28 Kamyr, Inc. Control of metals and dissolved organics in the bleach plant

Also Published As

Publication number Publication date
DE69420035T2 (de) 2000-03-23
CA2163116C (en) 2003-12-30
US6325891B1 (en) 2001-12-04
DE69420035D1 (de) 1999-09-16
CA2163116A1 (en) 1994-12-22
WO1994029512A1 (en) 1994-12-22
SE501253E8 (sv) 1994-12-19
SE501253C2 (sv) 1994-12-19
EP0702735B1 (en) 1999-08-11
SE9301984D0 (sv) 1993-06-08
EP0702735A1 (en) 1996-03-27
AU6986294A (en) 1995-01-03
SE9301984L (sv) 1994-12-09
ATE183264T1 (de) 1999-08-15

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B24H Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
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B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2607 DE 22-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.