ES8603607A1 - Procedimiento para blanquear pastas papeleras quimicas - Google Patents

Procedimiento para blanquear pastas papeleras quimicas

Info

Publication number
ES8603607A1
ES8603607A1 ES536713A ES536713A ES8603607A1 ES 8603607 A1 ES8603607 A1 ES 8603607A1 ES 536713 A ES536713 A ES 536713A ES 536713 A ES536713 A ES 536713A ES 8603607 A1 ES8603607 A1 ES 8603607A1
Authority
ES
Spain
Prior art keywords
paper pulps
chemical paper
hypochlorite treatment
hypochlorite
hydrogen peroxide
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
Application number
ES536713A
Other languages
English (en)
Other versions
ES536713A0 (es
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
Application filed by Atochem SA filed Critical Atochem SA
Publication of ES8603607A1 publication Critical patent/ES8603607A1/es
Publication of ES536713A0 publication Critical patent/ES536713A0/es
Granted 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
    • D21C9/12—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)
  • Detergent Compositions (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Cosmetics (AREA)

Abstract

PROCEDIMIENTO PARA BLANQUEAR PASTAS PAPELERAS QUIMICAS. COMPRENDE: TRATAR LA PASTA, A UNA CONCENTRACION DEL 10%, CON HIPOCLORIRO DE SODIO A RAZON DE 0,5 A 2% DEL PESO DE LA PASTA SECA, A UNA TEMPERATURA DE 40JC EN PRESENCIA DE SOSA EN UNA PROPORCION DEL 3% EN PESO DE LA PASTA SECA; Y B) AÑADIR, CUANDO SE HA CONSUMIDO EL 85% DEL HIPOCLORIRO, SIN LAVADO PREVIO DE LA PASTA, PEROXIDO DE HIDROGENO EN UNA PORPORCION DEL 0,1 A 2% EN PESO DE LA PASTA SECA, DE FORMA QUE NO VARIE LA TEMPERATURA DEL TRATAMIENTO, QUE PROSIGUE DURANTE UN TIEMPO COMPRENDIDO ENTRELA MITAD Y LAS DOS TERCERAS PARTES DE LA DURACION DE LA PARTE DEL TRATAMIENTO QUE PRECEDE A LA ADICION DEL PEROXIDO DE HIDROGENO. EL PEROXIDO DE HIDROGENO ESTA EN UNA PROPORCION DEL 0,2 A 0,5% EN PESO DE LA PASTA SECA. TAMBIEN SE AÑADE, JUNTO AL PEROXIDO DE HIDROGENO, SOSA EN UNA PROPORCION DEL 2% EN PESO DE LA PASTA.
ES536713A 1983-10-13 1984-10-11 Procedimiento para blanquear pastas papeleras quimicas Granted ES536713A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8316500A FR2553444B1 (fr) 1983-10-13 1983-10-13 Traitement a l'hypochlorite de pates papetieres chimiques

Publications (2)

Publication Number Publication Date
ES8603607A1 true ES8603607A1 (es) 1985-12-16
ES536713A0 ES536713A0 (es) 1985-12-16

Family

ID=9293226

Family Applications (1)

Application Number Title Priority Date Filing Date
ES536713A Granted ES536713A0 (es) 1983-10-13 1984-10-11 Procedimiento para blanquear pastas papeleras quimicas

Country Status (9)

Country Link
EP (1) EP0140804B1 (es)
JP (1) JPS6099086A (es)
AT (1) ATE24745T1 (es)
AU (1) AU565124B2 (es)
CA (1) CA1269805A (es)
DE (2) DE3461941D1 (es)
ES (1) ES536713A0 (es)
FI (1) FI75374C (es)
FR (1) FR2553444B1 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ229702A (en) * 1989-06-23 1993-03-26 Nz Forest Products Ltd Formerl Bleaching chemical pulp including an activation step followed by an alkaline extraction step with no intervening washing step
WO1998026128A1 (en) * 1996-12-11 1998-06-18 Akio Mita Method for storing and transporting cellulosic and process for manufacturing pulp
CN100500990C (zh) * 2005-09-02 2009-06-17 华南理工大学 纸浆清洁漂白方法
JP4968638B2 (ja) * 2005-11-15 2012-07-04 好高 青山 軸状部品の供給装置
JP4941726B2 (ja) * 2007-01-12 2012-05-30 沖縄県 変色木材の漂白方法
JP4943908B2 (ja) * 2007-03-26 2012-05-30 陽一 松本 葛根繊維の製造方法及び該製造方法により得られた葛根繊維
JP2008264866A (ja) * 2007-04-20 2008-11-06 Yoshitaka Aoyama 電気抵抗溶接における電極の動作制御装置と制御方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE736070C (de) * 1938-07-01 1943-06-07 Degussa Verfahren zum Behandeln von Zellstoff
US2527563A (en) * 1947-08-13 1950-10-31 Buffalo Electro Chem Co Method of bleaching semichemical pulps
US2661261A (en) * 1950-06-30 1953-12-01 Buffalo Electro Chem Co Method of superbleaching chemical pulp
US2865701A (en) * 1953-12-07 1958-12-23 Nat Distillers Chem Corp Process of bleaching kraft pulp with alkaline hypochlorite bleach acidifying the pulp containing residual chlorine and then bleaching with alkaline peroxide
US2920011A (en) * 1955-03-18 1960-01-05 Waldorf Paper Prod Co Elevated temperature and pressure two stage hypochlorite peroxide pulp bleaching process

Also Published As

Publication number Publication date
AU3421184A (en) 1985-04-18
EP0140804A1 (fr) 1985-05-08
FI843975L (fi) 1985-04-14
AU565124B2 (en) 1987-09-03
EP0140804B1 (fr) 1987-01-07
FI75374C (fi) 1988-06-09
FR2553444B1 (fr) 1986-07-18
CA1269805A (fr) 1990-06-05
DE140804T1 (de) 1985-12-05
JPS6214678B2 (es) 1987-04-03
ATE24745T1 (de) 1987-01-15
FI75374B (fi) 1988-02-29
DE3461941D1 (en) 1987-02-12
ES536713A0 (es) 1985-12-16
FR2553444A1 (fr) 1985-04-19
FI843975A0 (fi) 1984-10-10
JPS6099086A (ja) 1985-06-01

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970303