AU4919993A - Process for bleaching of lignocellulose-containing pulp - Google Patents

Process for bleaching of lignocellulose-containing pulp

Info

Publication number
AU4919993A
AU4919993A AU49199/93A AU4919993A AU4919993A AU 4919993 A AU4919993 A AU 4919993A AU 49199/93 A AU49199/93 A AU 49199/93A AU 4919993 A AU4919993 A AU 4919993A AU 4919993 A AU4919993 A AU 4919993A
Authority
AU
Australia
Prior art keywords
pulp
bleaching
lignocellulose
peroxide
initial treatment
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.)
Granted
Application number
AU49199/93A
Other versions
AU659039B2 (en
Inventor
Lennart Andersson
Jiri Basta
Wenche Hermansson
Lillemor Holtinger
Magnus Linsten
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.)
Nouryon Pulp and Performance Chemicals AB
Original Assignee
Eka Nobel 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=20387625&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AU4919993(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eka Nobel AB filed Critical Eka Nobel AB
Publication of AU4919993A publication Critical patent/AU4919993A/en
Application granted granted Critical
Publication of AU659039B2 publication Critical patent/AU659039B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • 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)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Stringed Musical Instruments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

The present invention relates to a process for bleaching of lignocellulose-containing pulp, in which the pulp is treated at a pH between about 1 and about 7 in the presence of a magnesium compound, whereupon the pulp is washed and subsequently bleached with a peroxide-containing compound. The initial treatment removes from the pulp those trace metal ions that have a negative effect on the subsequent bleaching with a peroxide-containing compound. Owing to the presence of magnesium ions in dissolved form during the initial treatment, the magnesium ions are retained in those positions in the pulp where they have a particularly positive effect on the effectiveness of the bleaching stage.
AU49199/93A 1992-10-29 1993-10-25 Process for bleaching of lignocellulose-containing pulp Ceased AU659039B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9203200 1992-10-29
SE9203200A SE512137C2 (en) 1992-10-29 1992-10-29 Process for bleaching lignocellulosic pulp

Publications (2)

Publication Number Publication Date
AU4919993A true AU4919993A (en) 1994-05-12
AU659039B2 AU659039B2 (en) 1995-05-04

Family

ID=20387625

Family Applications (1)

Application Number Title Priority Date Filing Date
AU49199/93A Ceased AU659039B2 (en) 1992-10-29 1993-10-25 Process for bleaching of lignocellulose-containing pulp

Country Status (16)

Country Link
EP (1) EP0595386B2 (en)
JP (1) JPH06207392A (en)
AT (1) ATE180523T1 (en)
AU (1) AU659039B2 (en)
BR (1) BR9304438A (en)
CA (1) CA2109179A1 (en)
CZ (1) CZ284366B6 (en)
DE (1) DE69325070D1 (en)
FI (1) FI934705A (en)
MX (1) MX9306618A (en)
NO (1) NO302766B1 (en)
NZ (1) NZ250050A (en)
RU (1) RU2072014C1 (en)
SE (1) SE512137C2 (en)
SK (1) SK117593A3 (en)
ZA (1) ZA937908B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3724033B2 (en) * 1996-01-30 2005-12-07 住友電気工業株式会社 High-strength, high-heat-resistant aluminum alloy and its manufacturing method, conductive wire and overhead wire
AUPP476398A0 (en) * 1998-07-21 1998-08-13 Orica Australia Pty Ltd Bleaching process
DE102009050570B4 (en) 2008-10-23 2017-07-06 Bene_Fit Systems Gmbh & Co. Kg Production process for bleached organic fiber materials and use of a bleaching agent

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US422819A (en) * 1890-03-04 Frederick j
US2687943A (en) * 1951-06-26 1954-08-31 Du Pont Bleaching of mechanical wood pulp
US3507744A (en) * 1966-04-01 1970-04-21 Kimberly Clark Co Wood pulp bleaching process utilizing peroxide pyrophosphate high concentration compositions
JPS51102103A (en) * 1975-03-05 1976-09-09 Nippon Parupu Kogyo Kk Ryusanenhoparupuno hyohakuhoho
JPS583074B2 (en) * 1975-11-17 1983-01-19 三菱瓦斯化学株式会社 Palpuno Kasan Kabutsu Hiyou Hakuhou
SE420430B (en) † 1978-02-17 1981-10-05 Mo Och Domsjoe Ab PROCEDURE FOR WHEATING AND EXTRACTION OF LIGNOCELLULOSALLY MATERIALS WITH PEROXID CONTAINING BLACKS
JPS5927436B2 (en) * 1979-05-29 1984-07-05 王子製紙株式会社 Peroxide bleaching method for wood pulp
JPS5721590A (en) * 1980-07-11 1982-02-04 Mitsubishi Gas Chemical Co Peroxide bleaching of wood pulp
FR2520397A1 (en) * 1982-01-28 1983-07-29 Centre Tech Ind Papier PROCESS FOR TREATING CHEMICAL PAPER PASTES
AT380496B (en) * 1984-06-27 1986-05-26 Steyrermuehl Papier METHOD AND REACTOR FOR DELIGNIFYING CELLULAR WITH OXYGEN
JP2827235B2 (en) * 1988-11-22 1998-11-25 三菱瓦斯化学株式会社 High yield pulp bleaching process.
JPH0364589A (en) * 1989-07-28 1991-03-19 Mitsubishi Gas Chem Co Inc Bleaching of chemical pulp
US5091054A (en) † 1989-08-18 1992-02-25 Degussa Corporation Process for bleaching and delignification of lignocellulosic
CA2053035C (en) † 1990-10-12 1997-09-30 Repap Enterprises Inc. Chlorine-free wood pulps and process of making
SE470065C (en) * 1991-04-30 1995-10-12 Eka Nobel Ab Treatment of chemical pulp with an acid and then a magnesium and calcium compound in chlorine-free bleaching

Also Published As

Publication number Publication date
NO933873D0 (en) 1993-10-27
NO933873L (en) 1994-05-02
SE512137C2 (en) 2000-01-31
ATE180523T1 (en) 1999-06-15
SE9203200L (en) 1994-04-30
FI934705A (en) 1994-04-30
JPH06207392A (en) 1994-07-26
MX9306618A (en) 1994-04-29
ZA937908B (en) 1994-05-24
FI934705A0 (en) 1993-10-25
CA2109179A1 (en) 1994-04-30
CZ224193A3 (en) 1994-05-18
DE69325070D1 (en) 1999-07-01
EP0595386A1 (en) 1994-05-04
RU2072014C1 (en) 1997-01-20
SE9203200D0 (en) 1992-10-29
NO302766B1 (en) 1998-04-20
SK117593A3 (en) 1994-05-11
BR9304438A (en) 1994-05-03
NZ250050A (en) 1994-12-22
EP0595386B1 (en) 1999-05-26
EP0595386B2 (en) 2002-07-17
CZ284366B6 (en) 1998-11-11
AU659039B2 (en) 1995-05-04

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired