PT778909E - Branqueamentode de pasta - Google Patents

Branqueamentode de pasta

Info

Publication number
PT778909E
PT778909E PT95930753T PT95930753T PT778909E PT 778909 E PT778909 E PT 778909E PT 95930753 T PT95930753 T PT 95930753T PT 95930753 T PT95930753 T PT 95930753T PT 778909 E PT778909 E PT 778909E
Authority
PT
Portugal
Prior art keywords
bleaching
sequence
treating
whitening
paste
Prior art date
Application number
PT95930753T
Other languages
English (en)
Inventor
Marten Dahl
Original Assignee
Valmet Fibertech Ab
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=20395066&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=PT778909(E) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Valmet Fibertech Ab filed Critical Valmet Fibertech Ab
Publication of PT778909E publication Critical patent/PT778909E/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
    • D21C9/1026—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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Medicinal Preparation (AREA)
  • Semiconductor Lasers (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
PT95930753T 1994-08-31 1995-08-11 Branqueamentode de pasta PT778909E (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9402885A SE514697C2 (sv) 1994-08-31 1994-08-31 Eliminering av metalljoner vid blekning av massa

Publications (1)

Publication Number Publication Date
PT778909E true PT778909E (pt) 2003-01-31

Family

ID=20395066

Family Applications (1)

Application Number Title Priority Date Filing Date
PT95930753T PT778909E (pt) 1994-08-31 1995-08-11 Branqueamentode de pasta

Country Status (17)

Country Link
US (1) US6540872B1 (pt)
EP (1) EP0778909B1 (pt)
JP (1) JPH10505639A (pt)
CN (1) CN1065578C (pt)
AT (1) ATE226658T1 (pt)
AU (1) AU687626B2 (pt)
BR (1) BR9508653A (pt)
CA (1) CA2197771A1 (pt)
DE (1) DE69528660T2 (pt)
ES (1) ES2185715T3 (pt)
FI (1) FI970821A (pt)
NO (1) NO970907L (pt)
NZ (1) NZ292288A (pt)
PT (1) PT778909E (pt)
SE (1) SE514697C2 (pt)
WO (1) WO1996006976A1 (pt)
ZA (1) ZA957070B (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6375797B1 (en) * 1996-06-20 2002-04-23 Andritz-Ahlstrom Oy Bleaching chemical pulp in a PkDQ-Po Sequence
SE507742C2 (sv) * 1996-11-08 1998-07-06 Sunds Defibrator Ind Ab Förblekningsbehandling av pappersmassa med klordioxid, alkali och komplexbildare utan mellanliggande tvättar
SE0200981D0 (sv) * 2002-03-28 2002-03-28 Eka Chemicals Ab Process for bleaching lignocellulose-containing non-wood pulp
JP4513959B2 (ja) * 2004-09-17 2010-07-28 三菱瓦斯化学株式会社 製紙用化学パルプの半晒漂白方法
FI123102B (fi) * 2006-03-31 2012-11-15 Laennen Tutkimus Western Res Inc Oy Kemiallisen massan valkaisumenetelmä
CN103088699B (zh) 2008-06-20 2015-04-22 国际纸业公司 具有改良光学特性的组合物和记录片材
CN101812812B (zh) * 2009-02-25 2012-08-08 山东福荫造纸环保科技有限公司 一种植物纤维浆料无元素氯的漂白方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1100709A (en) * 1965-06-25 1968-01-24 Pulp Paper Res Inst Two-stage purification of fibrous cellulose material
DE2219504C2 (de) 1972-04-21 1974-10-03 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Mehrstufenbleiche von Zellstoffen mit erheblich reduziertem Chloreinsatz
ATE97179T1 (de) * 1989-06-06 1993-11-15 Eka Nobel Ab Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
US5091054A (en) * 1989-08-18 1992-02-25 Degussa Corporation Process for bleaching and delignification of lignocellulosic
SE9000340L (sv) * 1990-01-31 1991-08-01 Eka Nobel Ab Foerfarande vid blekning av lignocellulosahaltigt material
SE469842C (sv) 1992-01-21 1996-01-15 Sunds Defibrator Ind Ab Blekning av kemisk massa med peroxid
SE500616C2 (sv) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Blekning av kemisk massa med peroxid vid övertryck
SE502706E (sv) * 1994-04-05 1999-09-27 Mo Och Domsjoe Ab Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg

Also Published As

Publication number Publication date
FI970821A0 (fi) 1997-02-27
DE69528660D1 (de) 2002-11-28
CN1157644A (zh) 1997-08-20
US6540872B1 (en) 2003-04-01
NZ292288A (en) 1997-11-24
ES2185715T3 (es) 2003-05-01
WO1996006976A1 (en) 1996-03-07
FI970821A (fi) 1997-02-27
DE69528660T2 (de) 2003-06-26
BR9508653A (pt) 1997-11-11
JPH10505639A (ja) 1998-06-02
EP0778909B1 (en) 2002-10-23
SE9402885D0 (sv) 1994-08-31
NO970907D0 (no) 1997-02-27
SE9402885L (sv) 1996-03-01
AU3401795A (en) 1996-03-22
ZA957070B (en) 1996-04-15
CN1065578C (zh) 2001-05-09
SE514697C2 (sv) 2001-04-02
EP0778909A1 (en) 1997-06-18
AU687626B2 (en) 1998-02-26
CA2197771A1 (en) 1996-03-07
ATE226658T1 (de) 2002-11-15
NO970907L (no) 1997-02-27

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