ES2129142T3 - PROCEDURE FOR THE WHITENING OF A CHEMICAL PAPER MILL. - Google Patents

PROCEDURE FOR THE WHITENING OF A CHEMICAL PAPER MILL.

Info

Publication number
ES2129142T3
ES2129142T3 ES94931025T ES94931025T ES2129142T3 ES 2129142 T3 ES2129142 T3 ES 2129142T3 ES 94931025 T ES94931025 T ES 94931025T ES 94931025 T ES94931025 T ES 94931025T ES 2129142 T3 ES2129142 T3 ES 2129142T3
Authority
ES
Spain
Prior art keywords
whitening
procedure
chemical paper
paper mill
pulp
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.)
Expired - Lifetime
Application number
ES94931025T
Other languages
Spanish (es)
Other versions
ES2129142T5 (en
Inventor
Francois Desprez
Johan Devenyns
Nicholas A Troughton
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 INTEROX
Solvay Chimie SA
Original Assignee
SOLVAY INTEROX
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=3887547&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2129142(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SOLVAY INTEROX, Solvay Interox SA filed Critical SOLVAY INTEROX
Application granted granted Critical
Publication of ES2129142T3 publication Critical patent/ES2129142T3/en
Publication of ES2129142T5 publication Critical patent/ES2129142T5/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

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)

Abstract

Method of bleaching chemical paper pulp having undergone extensive cooking, involving a sequence of processing steps carried out without chlorine reagents. The pulp is subjected to decontamination from its transition metals and then to a step using alkaline hydrogen peroxide.
ES94931025T 1993-11-10 1994-10-28 PROCEDURE FOR THE WHITENING OF A CHEMICAL PAPER PASTE. Expired - Lifetime ES2129142T5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9301251A BE1007757A3 (en) 1993-11-10 1993-11-10 Method of laundering of chemical pulp.
BE9301251 1993-11-10

Publications (2)

Publication Number Publication Date
ES2129142T3 true ES2129142T3 (en) 1999-06-01
ES2129142T5 ES2129142T5 (en) 2005-04-01

Family

ID=3887547

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94931025T Expired - Lifetime ES2129142T5 (en) 1993-11-10 1994-10-28 PROCEDURE FOR THE WHITENING OF A CHEMICAL PAPER PASTE.

Country Status (14)

Country Link
EP (1) EP0728238B2 (en)
JP (1) JPH10500178A (en)
AT (1) ATE175738T1 (en)
AU (1) AU7993994A (en)
BE (1) BE1007757A3 (en)
BR (1) BR9408027A (en)
CA (1) CA2176246A1 (en)
DE (1) DE69416000D1 (en)
ES (1) ES2129142T5 (en)
FI (1) FI961975A (en)
MA (1) MA23369A1 (en)
NO (1) NO961889L (en)
WO (1) WO1995013420A1 (en)
ZA (1) ZA948563B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4967451B2 (en) 2006-05-17 2012-07-04 三菱瓦斯化学株式会社 Method for producing bleached pulp
BRPI0821031B1 (en) 2007-12-20 2018-05-15 Mitsubishi Gas Chemical Company, Inc. PROCESS FOR PRODUCTION OF TARGETED PULP

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69004492T3 (en) * 1989-06-06 2001-11-15 Eka Nobel Ab, Bohus Process for bleaching pulps containing lignocellulose.
SE468355B (en) * 1991-04-30 1992-12-21 Eka Nobel Ab CHEMISTRY OF CHEMICAL MASS THROUGH TREATMENT WITH COMPLEX PICTURES AND OZONE
SE470065C (en) * 1991-04-30 1996-01-15 Eka Nobel Ab Treatment of chemical pulp with an acid and then a magnesium and calcium compound in chlorine-free bleaching
SE469842C (en) * 1992-01-21 1996-01-15 Sunds Defibrator Ind Ab Bleaching of chemical pulp with peroxide
SE9201477L (en) * 1992-05-11 1993-06-28 Kamyr Ab SEATING WHITE PILLOW WITHOUT USING CHLORIC CHEMICALS
BE1006056A3 (en) * 1992-07-06 1994-05-03 Solvay Interox Method of laundering of chemical pulp.
DE69304342T3 (en) * 1992-11-27 2004-07-01 Eka Chemicals Ab PROCESS FOR BLEACHING LIGNOCELLULOSE-CONTAINING PULP
BE1007700A3 (en) * 1993-11-04 1995-10-03 Solvay Interox Method of laundering of chemical pulp.

Also Published As

Publication number Publication date
AU7993994A (en) 1995-05-29
ATE175738T1 (en) 1999-01-15
ES2129142T5 (en) 2005-04-01
NO961889D0 (en) 1996-05-09
FI961975A0 (en) 1996-05-09
NO961889L (en) 1996-05-09
MA23369A1 (en) 1995-07-01
CA2176246A1 (en) 1995-05-18
DE69416000D1 (en) 1999-02-25
FI961975A (en) 1996-07-09
EP0728238B1 (en) 1999-01-13
BR9408027A (en) 1996-12-17
JPH10500178A (en) 1998-01-06
BE1007757A3 (en) 1995-10-17
ZA948563B (en) 1995-06-30
WO1995013420A1 (en) 1995-05-18
EP0728238B2 (en) 2004-08-11
EP0728238A1 (en) 1996-08-28

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Legal Events

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Effective date: 19970606

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