SE9403396L - Blekning av massa - Google Patents

Blekning av massa

Info

Publication number
SE9403396L
SE9403396L SE9403396A SE9403396A SE9403396L SE 9403396 L SE9403396 L SE 9403396L SE 9403396 A SE9403396 A SE 9403396A SE 9403396 A SE9403396 A SE 9403396A SE 9403396 L SE9403396 L SE 9403396L
Authority
SE
Sweden
Prior art keywords
pulp
bleaching
chelating agent
agent
metals
Prior art date
Application number
SE9403396A
Other languages
Unknown language ( )
English (en)
Other versions
SE504826C2 (sv
SE9403396D0 (sv
Inventor
Ulf Germgaard
Rolf Boman
Kenneth Hafvenstroem
Jonas Lindquist
Original Assignee
Sunds Defibrator Ind 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
Application filed by Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab
Priority to SE9403396A priority Critical patent/SE504826C2/sv
Publication of SE9403396D0 publication Critical patent/SE9403396D0/sv
Priority to CN 95195457 priority patent/CN1159842A/zh
Priority to PCT/SE1995/001135 priority patent/WO1996011298A1/en
Priority to JP8512520A priority patent/JPH10506965A/ja
Priority to CA 2199257 priority patent/CA2199257A1/en
Priority to AU37124/95A priority patent/AU686024B2/en
Priority to EP95934912A priority patent/EP0784720A1/en
Priority to BR9509253A priority patent/BR9509253A/pt
Publication of SE9403396L publication Critical patent/SE9403396L/sv
Priority to FI971401A priority patent/FI971401A0/sv
Priority to NO971536A priority patent/NO971536D0/no
Publication of SE504826C2 publication Critical patent/SE504826C2/sv

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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
SE9403396A 1994-10-07 1994-10-07 Behandling av kemisk massa med komplexbildare i närvaro av ett oxidationsmedel SE504826C2 (sv)

Priority Applications (10)

Application Number Priority Date Filing Date Title
SE9403396A SE504826C2 (sv) 1994-10-07 1994-10-07 Behandling av kemisk massa med komplexbildare i närvaro av ett oxidationsmedel
BR9509253A BR9509253A (pt) 1994-10-07 1995-10-05 Processo de alvejamento de polia livre de cloro
CA 2199257 CA2199257A1 (en) 1994-10-07 1995-10-05 Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching
PCT/SE1995/001135 WO1996011298A1 (en) 1994-10-07 1995-10-05 Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching
JP8512520A JPH10506965A (ja) 1994-10-07 1995-10-05 漂白に関連したキレート化剤と酸化剤とによる化学パルプの処理
CN 95195457 CN1159842A (zh) 1994-10-07 1995-10-05 用螯合剂和氧化剂对化学纸浆进行与漂白有关的处理
AU37124/95A AU686024B2 (en) 1994-10-07 1995-10-05 Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching
EP95934912A EP0784720A1 (en) 1994-10-07 1995-10-05 Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching
FI971401A FI971401A0 (sv) 1994-10-07 1997-04-04 Behandling av kemisk massa med ett kelateringsmedel och ett oxidationsmedel i samband med blekningen
NO971536A NO971536D0 (no) 1994-10-07 1997-04-04 Behandling av kjemisk masse med et chelateringsmiddel og et oksydasjonsmiddel i forbindelse med bleking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9403396A SE504826C2 (sv) 1994-10-07 1994-10-07 Behandling av kemisk massa med komplexbildare i närvaro av ett oxidationsmedel

Publications (3)

Publication Number Publication Date
SE9403396D0 SE9403396D0 (sv) 1994-10-07
SE9403396L true SE9403396L (sv) 1996-04-08
SE504826C2 SE504826C2 (sv) 1997-05-12

Family

ID=20395512

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9403396A SE504826C2 (sv) 1994-10-07 1994-10-07 Behandling av kemisk massa med komplexbildare i närvaro av ett oxidationsmedel

Country Status (10)

Country Link
EP (1) EP0784720A1 (sv)
JP (1) JPH10506965A (sv)
CN (1) CN1159842A (sv)
AU (1) AU686024B2 (sv)
BR (1) BR9509253A (sv)
CA (1) CA2199257A1 (sv)
FI (1) FI971401A0 (sv)
NO (1) NO971536D0 (sv)
SE (1) SE504826C2 (sv)
WO (1) WO1996011298A1 (sv)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1010617A3 (fr) * 1996-09-11 1998-11-03 Solvay Interox Procede de blanchiment de pate a papier.
BE1010678A3 (fr) * 1996-10-11 1998-11-03 Solvay Interox Procede de delignification et de blanchiment de pate a papier chimique.
CZ86099A3 (cs) * 1996-09-11 1999-06-16 Solvay Interox (Societe Anonyme) Způsob delignifikace a bělení papírenské buničiny

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE420430B (sv) * 1978-02-17 1981-10-05 Mo Och Domsjoe Ab Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel
EP0402335B2 (en) * 1989-06-06 2001-03-14 Eka Chemicals AB Process for bleaching lignocellulose-containing pulps

Also Published As

Publication number Publication date
SE504826C2 (sv) 1997-05-12
CA2199257A1 (en) 1996-04-18
CN1159842A (zh) 1997-09-17
AU3712495A (en) 1996-05-02
FI971401A (sv) 1997-04-04
WO1996011298A1 (en) 1996-04-18
NO971536L (no) 1997-04-04
AU686024B2 (en) 1998-01-29
EP0784720A1 (en) 1997-07-23
JPH10506965A (ja) 1998-07-07
FI971401A0 (sv) 1997-04-04
SE9403396D0 (sv) 1994-10-07
BR9509253A (pt) 1997-10-21
NO971536D0 (no) 1997-04-04

Similar Documents

Publication Publication Date Title
ATE30143T1 (de) Verfahren zum steuern eines anaeroben prozesses.
FI941764A0 (sv) Förfarande för blekning av lignocellulosahaltig massa
DE69101530D1 (de) Flockungsmittel für Wasseraufbereitung und Verfahren für seine Herstellung.
SE9403396D0 (sv) Blekning av massa
PH30783A (en) Method for treatment of waste water by activated sludge process.
BR9306963A (pt) Método de tratamento de água de processo
ATE151824T1 (de) Aufschlussverfahren
SE9502962L (sv) Behandling av massa med komplexbildare i minst två blandningssteg utan mellanliggande tvätt
DE3370498D1 (en) Process for the anti-felt treatment of keratinous fibres consisting of a basic oxidation catalyzed by a metal salt, and fibres obtained according to the process
SE9503004L (sv) Blekning av massa
SE9501623L (sv) Blekning av massa
SE9303066L (sv) Blekning av kemisk massa varvid massan behandlas med komplexbildare före och efter ett ozonsteg
FI934705A0 (fi) Foerfarande foer blekning av lignocellulosahaltig massa
SE9604094L (sv) Förblekningsbehandling av pappersmassa med klordioxid, alkali och komplexbildare utan mellanliggande tvättar
SE501325E (sv) Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare
SE9700030L (sv) Behandling av massa med komplexbildare i minst ett blandningssteg, utan användning av blektorn
SE9301294D0 (sv) Metod foer blekning av lignocellulosahaltig massa
CS598188A1 (en) Method of waste waters treatment during antroquinone dyes production
DE3886859D1 (de) Ballast für einen Waschmaschinenlaugenbehälter und Verfahren zur Herstellung des Ballastes.

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 9403396-6

Format of ref document f/p: F