ATE226658T1 - Bleichen von papierzellstoff - Google Patents

Bleichen von papierzellstoff

Info

Publication number
ATE226658T1
ATE226658T1 AT95930753T AT95930753T ATE226658T1 AT E226658 T1 ATE226658 T1 AT E226658T1 AT 95930753 T AT95930753 T AT 95930753T AT 95930753 T AT95930753 T AT 95930753T AT E226658 T1 ATE226658 T1 AT E226658T1
Authority
AT
Austria
Prior art keywords
bleaching
paper pulp
bleaching paper
sequence
treating
Prior art date
Application number
AT95930753T
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=ATE226658(T1) "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
Application granted granted Critical
Publication of ATE226658T1 publication Critical patent/ATE226658T1/de

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)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Detergent Compositions (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Medicinal Preparation (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Semiconductor Lasers (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
AT95930753T 1994-08-31 1995-08-11 Bleichen von papierzellstoff ATE226658T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9402885A SE514697C2 (sv) 1994-08-31 1994-08-31 Eliminering av metalljoner vid blekning av massa
PCT/SE1995/000920 WO1996006976A1 (en) 1994-08-31 1995-08-11 Pulp bleaching

Publications (1)

Publication Number Publication Date
ATE226658T1 true ATE226658T1 (de) 2002-11-15

Family

ID=20395066

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95930753T ATE226658T1 (de) 1994-08-31 1995-08-11 Bleichen von papierzellstoff

Country Status (17)

Country Link
US (1) US6540872B1 (de)
EP (1) EP0778909B1 (de)
JP (1) JPH10505639A (de)
CN (1) CN1065578C (de)
AT (1) ATE226658T1 (de)
AU (1) AU687626B2 (de)
BR (1) BR9508653A (de)
CA (1) CA2197771A1 (de)
DE (1) DE69528660T2 (de)
ES (1) ES2185715T3 (de)
FI (1) FI970821A0 (de)
NO (1) NO970907D0 (de)
NZ (1) NZ292288A (de)
PT (1) PT778909E (de)
SE (1) SE514697C2 (de)
WO (1) WO1996006976A1 (de)
ZA (1) ZA957070B (de)

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
PT2288752E (pt) 2008-06-20 2014-05-07 Int Paper Co Composição e folha de impressão que apresenta propriedades ópticas melhoradas
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
EP0402335B2 (de) * 1989-06-06 2001-03-14 Eka Chemicals 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
DE69528660D1 (de) 2002-11-28
US6540872B1 (en) 2003-04-01
PT778909E (pt) 2003-01-31
JPH10505639A (ja) 1998-06-02
ZA957070B (en) 1996-04-15
NO970907L (no) 1997-02-27
EP0778909A1 (de) 1997-06-18
DE69528660T2 (de) 2003-06-26
ES2185715T3 (es) 2003-05-01
SE514697C2 (sv) 2001-04-02
FI970821A (fi) 1997-02-27
FI970821A0 (fi) 1997-02-27
NZ292288A (en) 1997-11-24
AU687626B2 (en) 1998-02-26
NO970907D0 (no) 1997-02-27
CN1157644A (zh) 1997-08-20
SE9402885L (sv) 1996-03-01
WO1996006976A1 (en) 1996-03-07
BR9508653A (pt) 1997-11-11
AU3401795A (en) 1996-03-22
EP0778909B1 (de) 2002-10-23
SE9402885D0 (sv) 1994-08-31
CN1065578C (zh) 2001-05-09
CA2197771A1 (en) 1996-03-07

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