SE518692C2 - Blekning av massa med klordioxid - Google Patents

Blekning av massa med klordioxid

Info

Publication number
SE518692C2
SE518692C2 SE0100977A SE0100977A SE518692C2 SE 518692 C2 SE518692 C2 SE 518692C2 SE 0100977 A SE0100977 A SE 0100977A SE 0100977 A SE0100977 A SE 0100977A SE 518692 C2 SE518692 C2 SE 518692C2
Authority
SE
Sweden
Prior art keywords
pulp
chlorine dioxide
bleaching
concentration
acid
Prior art date
Application number
SE0100977A
Other languages
English (en)
Swedish (sv)
Other versions
SE0100977L (sv
SE0100977D0 (sv
Inventor
Ann-Sofi Naesholm
Original Assignee
Metso Paper Inc
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 Metso Paper Inc filed Critical Metso Paper Inc
Priority to SE0100977A priority Critical patent/SE518692C2/sv
Publication of SE0100977D0 publication Critical patent/SE0100977D0/xx
Priority to CA2435813A priority patent/CA2435813C/en
Priority to AT0904102A priority patent/AT412482B/de
Priority to PCT/SE2002/000287 priority patent/WO2002075046A1/en
Priority to US10/472,297 priority patent/US20040112556A1/en
Publication of SE0100977L publication Critical patent/SE0100977L/
Publication of SE518692C2 publication Critical patent/SE518692C2/sv
Priority to FI20031338A priority patent/FI120652B/fi

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
    • D21C9/12—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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE0100977A 2001-03-20 2001-03-20 Blekning av massa med klordioxid SE518692C2 (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE0100977A SE518692C2 (sv) 2001-03-20 2001-03-20 Blekning av massa med klordioxid
CA2435813A CA2435813C (en) 2001-03-20 2002-02-19 Bleaching of pulp with chlorine dioxide after alkaline bleaching
AT0904102A AT412482B (de) 2001-03-20 2002-02-19 Bleichen von pulpe mit chlordioxid
PCT/SE2002/000287 WO2002075046A1 (en) 2001-03-20 2002-02-19 Bleaching of pulp with chlorine dioxide
US10/472,297 US20040112556A1 (en) 2001-03-20 2002-02-19 Bleaching of pulp with chlorine dioxide
FI20031338A FI120652B (fi) 2001-03-20 2003-09-18 Menetelmä metalli-ioneja sisältävän massan loppuvalkaisemiseksi klooridioksidilla

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0100977A SE518692C2 (sv) 2001-03-20 2001-03-20 Blekning av massa med klordioxid

Publications (3)

Publication Number Publication Date
SE0100977D0 SE0100977D0 (sv) 2001-03-20
SE0100977L SE0100977L (sv) 2002-09-21
SE518692C2 true SE518692C2 (sv) 2002-11-05

Family

ID=20283448

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0100977A SE518692C2 (sv) 2001-03-20 2001-03-20 Blekning av massa med klordioxid

Country Status (6)

Country Link
US (1) US20040112556A1 (ru)
AT (1) AT412482B (ru)
CA (1) CA2435813C (ru)
FI (1) FI120652B (ru)
SE (1) SE518692C2 (ru)
WO (1) WO2002075046A1 (ru)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7976677B2 (en) 2006-12-18 2011-07-12 International Paper Company Process of bleaching hardwood pulps in a D1 or D2 stage in a presence of a weak base
US7976676B2 (en) 2006-12-18 2011-07-12 International Paper Company Process of bleaching softwood pulps in a D1 or D2 stage in a presence of a weak base
SE532370C2 (sv) * 2008-02-28 2009-12-29 Metso Paper Inc Metod för blekning av en massa
WO2016137797A1 (en) * 2015-02-23 2016-09-01 SomniQ, Inc. Empathetic user interface, systems, and methods for interfacing with empathetic computing device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238281A (en) * 1979-04-30 1980-12-09 Canadian International Paper Company Simplified bleaching process
SE466062B (sv) * 1990-04-30 1991-12-09 Sunds Defibrator Ind Ab Blekning av kemisk massa
US5938892A (en) * 1991-01-28 1999-08-17 Champion International Corporation Process for recycling bleach plant filtrate
US6706143B1 (en) * 1996-03-19 2004-03-16 International Paper Company Minimizing chlorinated organics in pulp bleaching processes
US6475338B1 (en) * 1996-06-05 2002-11-05 Andritz Inc. Method of minimizing transition metal ions during chemical pulping in a digester by adding chelating agent to the digester

Also Published As

Publication number Publication date
US20040112556A1 (en) 2004-06-17
FI120652B (fi) 2010-01-15
CA2435813C (en) 2010-04-27
CA2435813A1 (en) 2002-09-26
AT412482B (de) 2005-03-25
ATA90412002A (de) 2004-08-15
SE0100977L (sv) 2002-09-21
WO2002075046A1 (en) 2002-09-26
SE0100977D0 (sv) 2001-03-20
FI20031338A7 (fi) 2003-09-18

Similar Documents

Publication Publication Date Title
JP4499280B2 (ja) 過酸による化学パルプの漂白
SE9101300L (sv) Blekning av kemisk massa genom behandling med komplexbildare och ozon
WO1979000637A1 (en) Bleaching lignocellulose material with bleaching agents containing peroxide
FI116393B (fi) Menetelmä selluloosamassan delignifioimiseksi ja valkaisemiseksi
SE450257B (sv) Forfarande vid ozonblekning av pappersmassa varvid massan utsettes for en sur retentionsbehandling
SE532370C2 (sv) Metod för blekning av en massa
SE518692C2 (sv) Blekning av massa med klordioxid
RU2008143244A (ru) Способ отбелки химической целлюлозы
RU2016142894A (ru) Способ обработки использованного промывочного раствора в процессе извлечения лигнина
SE514697C2 (sv) Eliminering av metalljoner vid blekning av massa
JP2008308812A (ja) ソーダおよびアントラキノンを用いた蒸解に続くリグノセルロースパルプの漂白プロセスおよびシステム
SE506480C2 (sv) Blekning av lignocellulosahaltigt fibermaterial med ozon och persyra i ett kombinationssteg
RU2339752C2 (ru) Способ обработки целлюлозной массы с отбеливанием целлюлозы
SE501836C2 (sv) Blekning av kemisk massa varvid massan behandlas med komplexbildare före och efter ett ozonsteg
JPH01207492A (ja) 紙パルプの製造方法
US1106994A (en) Process for bleaching lignocellulose and pectocellulose.
FI106215B (fi) Kemiallisen massan valkaisu
SE512137C2 (sv) Förfarande för blekning av lignocellulosahaltig massa
JP4506085B2 (ja) 白液酸化用の活性炭触媒の洗浄方法およびその洗浄機構を備えた白液酸化装置
CN109930415A (zh) 一种提高氧漂浆料强度的方法
EP0784720A1 (en) Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching
SU1612020A1 (ru) Способ отбелки древесной массы
SE501985C2 (sv) Förfarande för avskiljning av metalljoner från massa i samband med blekning av massan
SE9604511A0 (sv) Förfarande för blekning av kraftmassa i ett surt peroxidsteg
SE502715C2 (sv) Blekning av cellulosamassa i ett ozonsteg med efterföljande tillsats av komplexbildare

Legal Events

Date Code Title Description
NUG Patent has lapsed