ATE376094T1 - METHOD FOR REDUCING THE EXTRACT CONTENT OF HIGH YIELD PULP AND METHOD FOR PRODUCING BLEACHED HIGH YIELD PULP - Google Patents

METHOD FOR REDUCING THE EXTRACT CONTENT OF HIGH YIELD PULP AND METHOD FOR PRODUCING BLEACHED HIGH YIELD PULP

Info

Publication number
ATE376094T1
ATE376094T1 AT05717239T AT05717239T ATE376094T1 AT E376094 T1 ATE376094 T1 AT E376094T1 AT 05717239 T AT05717239 T AT 05717239T AT 05717239 T AT05717239 T AT 05717239T AT E376094 T1 ATE376094 T1 AT E376094T1
Authority
AT
Austria
Prior art keywords
high yield
yield pulp
pulp
reducing
peroxide bleaching
Prior art date
Application number
AT05717239T
Other languages
German (de)
Inventor
Aarto Paren
Jukka Jaekaerae
Original Assignee
Kemira Oyj
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 Kemira Oyj filed Critical Kemira Oyj
Application granted granted Critical
Publication of ATE376094T1 publication Critical patent/ATE376094T1/en

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
    • D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
    • 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
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Abstract

The invention relates to a method for reducing the content of extractives of a high-yield pulp in a peroxide bleaching stage, said stage including peroxide bleaching and a subsequent dewatering or washing, said method comprising contacting the pulp in the peroxide bleaching with an organic stabilizer and in or after the peroxide bleaching with a surfactant, and thereafter subjecting the bleached pulp to said dewatering or washing for removing extractives along with the aqueous phase. The invention also relates to a method for producing bleached high-yield pulp.
AT05717239T 2004-02-24 2005-02-23 METHOD FOR REDUCING THE EXTRACT CONTENT OF HIGH YIELD PULP AND METHOD FOR PRODUCING BLEACHED HIGH YIELD PULP ATE376094T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20040282A FI121385B (en) 2004-02-24 2004-02-24 Process for Reducing Extract Substance in High Yield Masses and Process for Preparing Bleached High Yield Masses

Publications (1)

Publication Number Publication Date
ATE376094T1 true ATE376094T1 (en) 2007-11-15

Family

ID=31725758

Family Applications (1)

Application Number Title Priority Date Filing Date
AT05717239T ATE376094T1 (en) 2004-02-24 2005-02-23 METHOD FOR REDUCING THE EXTRACT CONTENT OF HIGH YIELD PULP AND METHOD FOR PRODUCING BLEACHED HIGH YIELD PULP

Country Status (9)

Country Link
US (1) US20070272378A1 (en)
EP (1) EP1718801B1 (en)
CN (1) CN100591842C (en)
AT (1) ATE376094T1 (en)
BR (1) BRPI0507851A (en)
CA (1) CA2553662C (en)
DE (1) DE602005002933T2 (en)
FI (1) FI121385B (en)
WO (1) WO2005080672A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20070126A0 (en) 2006-09-08 2007-02-13 Linde Ag Process for de-pulping and using carbon dioxide or (bi) carbonate for this
WO2013178875A1 (en) * 2012-05-29 2013-12-05 Kemira Oyj A process for the treatment of fibre material and a new composition
TW201544652A (en) * 2014-05-20 2015-12-01 Georgia Pacific Consumer Prod Bleaching and shive reduction process for non-wood fibers
TW201610265A (en) 2014-05-20 2016-03-16 喬治亞太平洋消費者產品公司 Bleaching and shive reduction process for non-wood fibers
TW201610261A (en) 2014-05-20 2016-03-16 喬治亞太平洋消費者產品公司 Bleaching and shive reduction process for non-wood fibers
CN111344455B (en) 2017-09-11 2022-10-28 索理思科技公司 Method for enhancing oxygen delignification of chemical wood pulp
CA3114123A1 (en) * 2018-11-07 2020-05-14 Kemira Oyj A composition for use as peroxide stabilizer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU74434A1 (en) * 1976-02-25 1977-09-12
DE3423452A1 (en) * 1984-06-26 1986-01-02 Sandoz-Patent-GmbH, 7850 Lörrach Stabilising mixture for the peroxide bleaching of cellulose-containing materials
US4963157A (en) * 1987-04-17 1990-10-16 Nippon Peroxide Co., Ltd. Method for bleaching cellulosic fiber material with hydrogen peroxide
US5234544A (en) * 1989-10-18 1993-08-10 Air Products And Chemicals, Inc. Cleaning and bleaching of secondary fiber
JP3191828B2 (en) * 1992-05-27 2001-07-23 三菱瓦斯化学株式会社 Deinking and bleaching of used printing paper
DE4344029A1 (en) * 1993-12-23 1995-06-29 Grillo Werke Ag Copolymers of unsaturated carboxylic acids, process for their preparation and their use
CN1088484C (en) * 1999-06-15 2002-07-31 杭州市化工研究所 Resin obstruction controlling agent for paper making
EP1268932B1 (en) * 2000-03-23 2008-10-22 Hercules Incorporated Pitch and stickies control in pulp and papermaking processes

Also Published As

Publication number Publication date
CN1922359A (en) 2007-02-28
FI121385B (en) 2010-10-29
FI20040282A (en) 2005-08-25
EP1718801B1 (en) 2007-10-17
EP1718801A2 (en) 2006-11-08
FI20040282A0 (en) 2004-02-24
BRPI0507851A (en) 2007-07-10
CA2553662C (en) 2012-10-23
US20070272378A1 (en) 2007-11-29
DE602005002933D1 (en) 2007-11-29
WO2005080672A3 (en) 2005-12-08
DE602005002933T2 (en) 2008-07-24
CN100591842C (en) 2010-02-24
WO2005080672A2 (en) 2005-09-01
CA2553662A1 (en) 2005-09-01

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Legal Events

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