ES2000019B3 - BLEACHING PROCEDURE FOR CHEMICAL PAPER PASTES. - Google Patents

BLEACHING PROCEDURE FOR CHEMICAL PAPER PASTES.

Info

Publication number
ES2000019B3
ES2000019B3 ES86420266T ES86420266T ES2000019B3 ES 2000019 B3 ES2000019 B3 ES 2000019B3 ES 86420266 T ES86420266 T ES 86420266T ES 86420266 T ES86420266 T ES 86420266T ES 2000019 B3 ES2000019 B3 ES 2000019B3
Authority
ES
Spain
Prior art keywords
pulp
alkaline extraction
treatment
chlorine dioxide
chemical paper
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
ES86420266T
Other languages
Spanish (es)
Other versions
ES2000019A4 (en
Inventor
Lucien Bourson
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.)
Arkema France SA
Original Assignee
Atochem 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=9324477&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2000019(B3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Atochem SA filed Critical Atochem SA
Publication of ES2000019A4 publication Critical patent/ES2000019A4/en
Application granted granted Critical
Publication of ES2000019B3 publication Critical patent/ES2000019B3/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
    • D21C9/1026—Other features in bleaching processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Detergent Compositions (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

1. Process for bleaching chemical papermaking pulps in a bleaching sequence including, in succession, a treatment of the pulp by means of chlorine and chlorine dioxide acting in a single bath, a first alkaline extraction by means of sodium hydroxide, a treatment of the pulp by means of chlorine dioxide, a second alkaline extraction by means of sodium hydroxide and again a treatment of the pulp by means of chlorine dioxide, characterized in that the pulp is subjected at the same time to the action of oxygen during the first alkaline extraction and to the action of hydrogen peroxide during the second alkaline extraction.
ES86420266T 1985-10-30 1986-10-28 BLEACHING PROCEDURE FOR CHEMICAL PAPER PASTES. Expired - Lifetime ES2000019B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8516332A FR2589494B1 (en) 1985-10-30 1985-10-30 PROCESS FOR BLEACHING CHEMICAL PAPER PULP

Publications (2)

Publication Number Publication Date
ES2000019A4 ES2000019A4 (en) 1987-09-16
ES2000019B3 true ES2000019B3 (en) 1990-03-16

Family

ID=9324477

Family Applications (1)

Application Number Title Priority Date Filing Date
ES86420266T Expired - Lifetime ES2000019B3 (en) 1985-10-30 1986-10-28 BLEACHING PROCEDURE FOR CHEMICAL PAPER PASTES.

Country Status (11)

Country Link
EP (1) EP0222674B1 (en)
JP (1) JPS62141188A (en)
AT (1) ATE48291T1 (en)
AU (1) AU603556B2 (en)
DE (2) DE3667184D1 (en)
ES (1) ES2000019B3 (en)
FI (1) FI85294B (en)
FR (1) FR2589494B1 (en)
NO (1) NO864319L (en)
PT (1) PT83649B (en)
ZA (1) ZA868275B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4031597A1 (en) * 1990-10-05 1992-04-09 Sueddeutsche Kalkstickstoff METHOD FOR LOW-CHLORINE BLEACHING AND DELIGNIFICATION OF CELLULAR
US6569284B1 (en) * 1996-09-24 2003-05-27 International Paper Company Elemental-chlorine-free bleaching process having an initial Eo or Eop stage
FR3062138B1 (en) * 2017-01-23 2019-06-07 Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses PROCESS FOR WHITENING A PAPER PULP

Also Published As

Publication number Publication date
EP0222674B1 (en) 1989-11-29
PT83649B (en) 1989-05-31
DE222674T1 (en) 1987-10-15
AU6449286A (en) 1987-05-07
EP0222674A1 (en) 1987-05-20
JPS62141188A (en) 1987-06-24
NO864319D0 (en) 1986-10-29
FR2589494A1 (en) 1987-05-07
PT83649A (en) 1986-11-01
JPH0116958B2 (en) 1989-03-28
FI864411A (en) 1987-05-01
AU603556B2 (en) 1990-11-22
NO864319L (en) 1987-05-04
DE3667184D1 (en) 1990-01-04
FR2589494B1 (en) 1988-07-29
FI864411A0 (en) 1986-10-29
ZA868275B (en) 1987-06-24
ATE48291T1 (en) 1989-12-15
ES2000019A4 (en) 1987-09-16
FI85294B (en) 1991-12-13

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