ES2102008T3 - BLEACHING OF CHEMICAL PAPER PASTE. - Google Patents

BLEACHING OF CHEMICAL PAPER PASTE.

Info

Publication number
ES2102008T3
ES2102008T3 ES93902618T ES93902618T ES2102008T3 ES 2102008 T3 ES2102008 T3 ES 2102008T3 ES 93902618 T ES93902618 T ES 93902618T ES 93902618 T ES93902618 T ES 93902618T ES 2102008 T3 ES2102008 T3 ES 2102008T3
Authority
ES
Spain
Prior art keywords
pulp
bleaching
consistency
chemical paper
paper paste
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
ES93902618T
Other languages
Spanish (es)
Inventor
Lars-Ake Lindstrom
Lars Sjodin
Solveig Norden
Marten Dahl
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.)
Valmet AB
Original Assignee
Sunds Defibrator Industries 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20385065&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2102008(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sunds Defibrator Industries AB filed Critical Sunds Defibrator Industries AB
Application granted granted Critical
Publication of ES2102008T3 publication Critical patent/ES2102008T3/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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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)
  • Detergent Compositions (AREA)

Abstract

UN METODO DE BLANQUEO DE PULPA DE SULFATO SIN USAR AGENTES DE BLANQUEO QUE CONTIENEN CLORO. LA PULPA DE SULFATO SE DELIGNIFICA CON OXIGENO Y `PUEDE POSIBLEMENTE TAMBIEN SER DELIGNIFICADA CON OZONO A UN NUMERO KAPPA POR DEBAJO DE 9.5. DESPUES SE LLEVA A CABO UN PRETRATAMIENTO CON AGENTE DE COMPLEJO DURANTE 1-60 MINUTO, EN EL QUE LA CONSISTENCIA DE LA PULPA ES 1-15% LA TEMPERATURA 70-110 (GRADOS) C Y PH 57. LA PULPA ASI PRETRATADA SE LAVA Y DESHIDRATA A UNA CONSISTENCIA DE 18-40%. DESPUES SE REALIZA EL BLANQUEO POR PEROXIDO EN MEDIO ALCALINO EN PRESENCIA DE SILICATO O UN AGENTE DE COMPLEJO ORGANICO DEL TIPO ACIDO FOSFONICO O CARBOXILICO.A SULPHATE PULP BLANCHING METHOD WITHOUT USING CHLORINE CONTAINING BLEACHING AGENTS. THE SULPHATE PULP IS DEIGNATED WITH OXYGEN AND `MAY ALSO BE DEIGNIFIED WITH OZONE TO A KAPPA NUMBER BELOW 9.5. THEN A PRE-TREATMENT WITH A COMPLEX AGENT IS CARRIED OUT FOR 1-60 MINUTES, IN WHICH THE PULP CONSISTENCY IS 1-15% THE TEMPERATURE 70-110 (DEGREES) CY PH 57. THE PRE-TREATED PULP IS WASHED AND DEHYDRATED AT A CONSISTENCY OF 18-40%. THEN PEROXIDE WHITENING IS PERFORMED IN ALKALINE ENVIRONMENT IN THE PRESENCE OF SILICATE OR AN ORGANIC COMPLEX AGENT OF THE PHOSPHONIC OR CARBOXYLIC ACID TYPE.

ES93902618T 1992-01-21 1993-01-12 BLEACHING OF CHEMICAL PAPER PASTE. Expired - Lifetime ES2102008T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9200152A SE469842C (en) 1992-01-21 1992-01-21 Bleaching of chemical pulp with peroxide

Publications (1)

Publication Number Publication Date
ES2102008T3 true ES2102008T3 (en) 1997-07-16

Family

ID=20385065

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93902618T Expired - Lifetime ES2102008T3 (en) 1992-01-21 1993-01-12 BLEACHING OF CHEMICAL PAPER PASTE.

Country Status (14)

Country Link
EP (1) EP0621915B1 (en)
JP (1) JPH07503042A (en)
AT (1) ATE151826T1 (en)
AU (1) AU653467B2 (en)
BR (1) BR9305761A (en)
CA (1) CA2124088A1 (en)
DE (1) DE69309893T2 (en)
ES (1) ES2102008T3 (en)
FI (1) FI943431A7 (en)
NO (1) NO942718L (en)
NZ (1) NZ246713A (en)
SE (1) SE469842C (en)
WO (1) WO1993014262A1 (en)
ZA (1) ZA93317B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1004674A3 (en) * 1991-03-11 1993-01-12 Interox Internat Sa Method of laundering of chemical pulp and application of the method of laundering pulp kraft.
BE1006056A3 (en) * 1992-07-06 1994-05-03 Solvay Interox Method of laundering of chemical pulp.
SE501253C2 (en) * 1993-06-08 1994-12-19 Kvaerner Pulping Tech Chlorine-free bleaching of chemical pulp
SE9301960L (en) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Bleaching of chemical pulp with peroxide at overpressure
CA2170398A1 (en) * 1993-09-02 1995-03-09 Michael A. Pikulin Improved method for bleaching lignocellulosic pulp
BE1007757A3 (en) * 1993-11-10 1995-10-17 Solvay Interox Method of laundering of chemical pulp.
FR2719854B1 (en) * 1994-05-11 1996-06-21 Atochem Elf Sa Process for the preparation of delignified and bleached chemical paper pulps.
SE514697C2 (en) 1994-08-31 2001-04-02 Valmet Fibertech Ab Elimination of metal ions in pulp bleaching

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8620222D0 (en) * 1986-08-20 1986-10-01 Abitibi Price Inc Peroxide bleaching
US4732650A (en) * 1986-09-15 1988-03-22 The Dow Chemical Company Bleaching of cellulosic pulps using hydrogen peroxide
ATE97179T1 (en) * 1989-06-06 1993-11-15 Eka Nobel Ab PROCESS FOR BLEACHING LIGNOCELLULOSE CONTAINING PULP.
FI93866B (en) * 1990-02-09 1995-02-28 Sunds Defibrator Rauma Oy Process for the preparation of sulphate pulp

Also Published As

Publication number Publication date
ATE151826T1 (en) 1997-05-15
WO1993014262A1 (en) 1993-07-22
NZ246713A (en) 1995-04-27
SE469842B (en) 1993-09-27
SE9200152L (en) 1993-07-22
DE69309893T2 (en) 1997-11-06
JPH07503042A (en) 1995-03-30
SE469842C (en) 1996-01-15
DE69309893D1 (en) 1997-05-22
NO942718D0 (en) 1994-07-20
NO942718L (en) 1994-07-20
ZA93317B (en) 1993-08-19
SE9200152D0 (en) 1992-01-21
CA2124088A1 (en) 1993-07-22
EP0621915A1 (en) 1994-11-02
EP0621915B1 (en) 1997-04-16
BR9305761A (en) 1997-01-28
AU3412593A (en) 1993-08-03
FI943431A0 (en) 1994-07-20
AU653467B2 (en) 1994-09-29
FI943431L (en) 1994-07-20
FI943431A7 (en) 1994-07-20

Similar Documents

Publication Publication Date Title
SE7902901L (en) OXYGEN LIGNIFIED BLOCK, CELLULOSIZED PULP WITH OZON
ES2091395T3 (en) PROCEDURE FOR BLEACHING OF PAPER BAG CONTAINING LIGNOCELLULOSE.
ES2096441T3 (en) PROCEDURE TO DE-LIGNIFY PASTA CONTAINING LIGNOCELLULOSE.
ES2102008T3 (en) BLEACHING OF CHEMICAL PAPER PASTE.
DE68914135D1 (en) Process for bleaching pulp.
ATE201245T1 (en) METHOD FOR PRODUCING AN OXIDIZING SOLUTION CONTAINING PERACID AND METHOD FOR TREATING SUBSTRATES THEREFROM
FI900549A0 (en) FOERFARANDE FOER BLEKNING AV CELLULOSAMASSA.
AU565124B2 (en) Hypochlorite treatment of chemical paper pulps
SE9801460D0 (en) Hot water extraction for pulp bleaching sequences
DE3783604D1 (en) CONTROL OF THE PEROXIDE WHITE DIFFERENT PAPER FIBER.
MX9307413A (en) PROCESS FOR WHITENING PULP CONTAINING LIGNOCELLULOSE.
AU6986294A (en) Method of bleaching pulp without using chlorine chemicals
GB1544216A (en) Bleaching and digesting cellulosic pulp
ES8102059A1 (en) A METHOD OF PURIFYING AND RESPECTIVELY, WHITENING IMPURIFIED CALCIUM SULPHATE.
FI864411A0 (en) FOERFARANDE FOER BLEKNING AV KEMISKA PAPPERSMASSOR.
SE9500826D0 (en) Pulp Bleaching Process
GB1123071A (en) Improvements in or relating to the treatment of natural or synthetic fibres
SE9203585L (en) Delignification and bleaching of lignocellulosic pulp with peracid and chlorine-free bleach
SE8904247D0 (en) PROCEDURE FOR BLACKING OF CHEMICAL CELLULOSAMASSA
SE9303551D0 (en) Ways to treat chemical pulp without the use of chlorine-containing chemicals

Legal Events

Date Code Title Description
FA2A Application withdrawn

Effective date: 19941031

FG2A Definitive protection

Ref document number: 621915

Country of ref document: ES