DE69410286T2 - Verfahren zum bleichen von zellstoff - Google Patents

Verfahren zum bleichen von zellstoff

Info

Publication number
DE69410286T2
DE69410286T2 DE69410286T DE69410286T DE69410286T2 DE 69410286 T2 DE69410286 T2 DE 69410286T2 DE 69410286 T DE69410286 T DE 69410286T DE 69410286 T DE69410286 T DE 69410286T DE 69410286 T2 DE69410286 T2 DE 69410286T2
Authority
DE
Germany
Prior art keywords
pulp
bleaching pulp
bleaching
processing step
processing
Prior art date
Legal status (The legal status 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 status listed.)
Revoked
Application number
DE69410286T
Other languages
German (de)
English (en)
Other versions
DE69410286D1 (de
Inventor
Francois Desprez
Nicholas Troughton
Johan Devenyns
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solvay Chimie SA
Original Assignee
Solvay Interox SA
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=3887524&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69410286(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Solvay Interox SA filed Critical Solvay Interox SA
Application granted granted Critical
Publication of DE69410286D1 publication Critical patent/DE69410286D1/de
Publication of DE69410286T2 publication Critical patent/DE69410286T2/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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
    • D21C9/1057—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
    • D21C9/1026—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
    • D21C9/16—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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
DE69410286T 1993-11-04 1994-10-28 Verfahren zum bleichen von zellstoff Revoked DE69410286T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9301215A BE1007700A3 (fr) 1993-11-04 1993-11-04 Procede pour le blanchiment d'une pate a papier chimique.
PCT/EP1994/003591 WO1995012709A1 (fr) 1993-11-04 1994-10-28 Procede pour le blanchiment d'une pate a papier chimique

Publications (2)

Publication Number Publication Date
DE69410286D1 DE69410286D1 (de) 1998-06-18
DE69410286T2 true DE69410286T2 (de) 1998-12-10

Family

ID=3887524

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69410286T Revoked DE69410286T2 (de) 1993-11-04 1994-10-28 Verfahren zum bleichen von zellstoff

Country Status (15)

Country Link
EP (1) EP0726979B1 (fi)
JP (1) JPH09507096A (fi)
AT (1) ATE166118T1 (fi)
AU (1) AU7994094A (fi)
BE (1) BE1007700A3 (fi)
BR (1) BR9407976A (fi)
CA (1) CA2175817A1 (fi)
DE (1) DE69410286T2 (fi)
ES (1) ES2119234T3 (fi)
FI (1) FI961895A0 (fi)
MA (1) MA23365A1 (fi)
NO (1) NO961817D0 (fi)
NZ (1) NZ274852A (fi)
WO (1) WO1995012709A1 (fi)
ZA (1) ZA948562B (fi)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1007757A3 (fr) * 1993-11-10 1995-10-17 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.
FI105701B (fi) * 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Menetelmä ja laitteisto massan käsittelemiseksi

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582692B1 (fr) * 1985-05-29 1987-12-11 Atochem Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment
DE402335T1 (de) * 1989-06-06 1992-04-09 Eka Nobel Ab, Surte Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
FR2655668B1 (fr) * 1989-12-11 1995-06-09 Du Pin Cellulose Procede de blanchiment de pates cellulosiques chimiques.

Also Published As

Publication number Publication date
BE1007700A3 (fr) 1995-10-03
JPH09507096A (ja) 1997-07-15
FI961895A (fi) 1996-05-03
EP0726979A1 (fr) 1996-08-21
BR9407976A (pt) 1996-12-03
NO961817L (no) 1996-05-03
AU7994094A (en) 1995-05-23
ZA948562B (en) 1995-06-30
FI961895A0 (fi) 1996-05-03
ATE166118T1 (de) 1998-05-15
WO1995012709A1 (fr) 1995-05-11
NO961817D0 (no) 1996-05-03
MA23365A1 (fr) 1995-07-01
CA2175817A1 (fr) 1995-05-11
NZ274852A (en) 1997-04-24
EP0726979B1 (fr) 1998-05-13
DE69410286D1 (de) 1998-06-18
ES2119234T3 (es) 1998-10-01

Similar Documents

Publication Publication Date Title
UA27039C2 (uk) Спосіб видалеhhя сполук сірки з потоку газів
NO944015L (no) Fremgangsmåte for bleking av en kjemisk papirmasse
DE69507709D1 (de) Dekontaminierungsverfahren
DE69600473T2 (de) Ascorbatbeständiges Verfahren zum Nachweis von Wasserstoffperoxid
FI98643B (fi) Menetelmä luonnollisesti tuotetun kymosiinin talteenottamiseksi
ATE166118T1 (de) Verfahren zum bleichen von zellstoff
DE60038161D1 (de) Verfahren zum quantifizieren von triglyzeriden im lipoprotein
DE3879382D1 (de) Verfahren zur aufbereitung von abfalloesungen von sauren dekontaminationschemikalien.
DE69416000D1 (de) Verfahren zum bleichen von zellstoff
NO179243B1 (no) Fremgangsmate for a fjerne uonsket farge fra saltsyre, samt anvendelse av hydroksylaminhydroklorid for a fjerne uonsket farge fra saltsyre
DE69425894T2 (de) Anordnung und Verfahren zum Erstellen von Software
DE59504166D1 (de) Verfahren zum dekontaminieren von kontaminiertem gut, sowie vorrichtungen dafür
DE69001916D1 (de) Verfahren zum zerstoeren von hypochloriten in einer perchloratloesung.
ATE119168T1 (de) Verfahren zum abspalten von delta-4-ungesättigter uronsäure aus glycosaminoglykanen.
DE69001915D1 (de) Verfahren zum zerstoeren von hypochloriten in einer chloratloesung.
SE9603630D0 (sv) Förfarande för blekning av massa
TH18764EX (th) กรรมวิธีสำหรับฟอกจางเยื่อกระดาษทางเคมี
SE9601938D0 (sv) Sekventiell förbehandling vid blekning
ATE109529T1 (de) Verfahren zum wasserstoffperoxydbleichen von hochausbeutezellstoffen.
ATE109842T1 (de) Verfahren zum wasserstoffperoxydbleichen von hochausbeute-zellstoffen.
DE69002692D1 (de) Verfahren zur reinigung von vinylchlorid.
TW326030B (en) Process for waste water treatment
ES428840A1 (es) Procedimiento para desodorizar los gases residuales.

Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation