ATE385526T1 - BLEACHING PULP USING PERACID - Google Patents

BLEACHING PULP USING PERACID

Info

Publication number
ATE385526T1
ATE385526T1 AT98961279T AT98961279T ATE385526T1 AT E385526 T1 ATE385526 T1 AT E385526T1 AT 98961279 T AT98961279 T AT 98961279T AT 98961279 T AT98961279 T AT 98961279T AT E385526 T1 ATE385526 T1 AT E385526T1
Authority
AT
Austria
Prior art keywords
bleaching
pulp
peracid
post
earth
Prior art date
Application number
AT98961279T
Other languages
German (de)
Inventor
Jukka Jaekaerae
Juha Patola
Aarto Paren
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 ATE385526T1 publication Critical patent/ATE385526T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/32—Bleaching agents
    • 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
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Cosmetics (AREA)

Abstract

The invention relates to a process for the bleaching of chemical pulp and the use of a bleaching solution. According to the invention the pulp is treated in a plurality of different steps by using at least in one step a bleaching solution which contains a peracid, and the essential idea of the invention is that the peracid is used in a post-bleaching which is the last step of the bleaching process, the post-bleaching being carried out in the presence of one or more earth-alkali metal compounds. By using a peracid the pulp is brought to its final brightness, and the purpose of the earth-alkali metal added is to combat the lowering of the viscosity of the pulp. According to the invention the post-bleaching can be carried out after the bleach plant steps in a pulp flow pipe, a storage tower or in the paper machine at a paper mill.
AT98961279T 1997-12-19 1998-12-18 BLEACHING PULP USING PERACID ATE385526T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI974575A FI112958B (en) 1997-12-19 1997-12-19 Method for bleaching chemical pulp and use of bleaching solution

Publications (1)

Publication Number Publication Date
ATE385526T1 true ATE385526T1 (en) 2008-02-15

Family

ID=8550176

Family Applications (1)

Application Number Title Priority Date Filing Date
AT98961279T ATE385526T1 (en) 1997-12-19 1998-12-18 BLEACHING PULP USING PERACID

Country Status (11)

Country Link
EP (1) EP1040222B1 (en)
JP (1) JP4499280B2 (en)
AT (1) ATE385526T1 (en)
AU (1) AU1674399A (en)
BR (1) BR9813747B1 (en)
CA (1) CA2315063C (en)
DE (1) DE69839097T2 (en)
ES (1) ES2302362T3 (en)
FI (1) FI112958B (en)
PT (1) PT1040222E (en)
WO (1) WO1999032710A1 (en)

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US7638016B2 (en) 2005-02-19 2009-12-29 International Paper Company Method for treating kraft pulp with optical brighteners after chlorine bleaching to increase brightness
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US7914646B2 (en) 2006-07-21 2011-03-29 Nalco Company Compositions and processes for paper production
JP4956991B2 (en) * 2005-12-22 2012-06-20 三菱瓦斯化学株式会社 Method for producing chemical pulp
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CA2709526C (en) 2007-12-20 2016-02-02 Mitsubishi Gas Chemical Company Inc. Process for production of bleached pulp
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US7932072B1 (en) 2009-12-07 2011-04-26 E. I. Du Pont De Nemours And Company Perhydrolase providing improved peracid stability
US7927854B1 (en) 2009-12-07 2011-04-19 E. I. Du Pont De Nemours And Company Perhydrolase providing improved peracid stability
US7910347B1 (en) 2009-12-07 2011-03-22 E. I. Du Pont De Nemours And Company Perhydrolase providing improved peracid stability
US7923233B1 (en) 2009-12-07 2011-04-12 E. I. Du Pont De Nemours And Company Perhydrolase providing improved peracid stability
US8450091B2 (en) 2010-03-26 2013-05-28 E. I. Du Pont De Nemours And Company Perhydrolase providing improved specific activity
WO2011119706A1 (en) 2010-03-26 2011-09-29 E.I. Dupont De Nemours And Company Perhydrolase providing improved specific activity
WO2011119708A1 (en) 2010-03-26 2011-09-29 E.I. Dupont De Nemours And Company Perhydrolase providing improved specific activity
US8206964B2 (en) 2010-03-26 2012-06-26 E. I. Du Pont De Nemours And Company Perhydrolase providing improved specific activity
US8586339B2 (en) 2010-03-26 2013-11-19 E. I. Du Pont De Nemours And Company Facilitated process for purification of proteins
US8389255B2 (en) 2010-03-26 2013-03-05 E.I. De Pont De Nemours And Company Perhydrolase providing improved specific activity
WO2012087966A2 (en) 2010-12-20 2012-06-28 E. I. Du Pont De Nemours And Company Targeted perhydrolases
WO2012087786A1 (en) 2010-12-21 2012-06-28 E.I. Dupont De Nemours And Company Perhydrolase variant providing improved specific activity
US8399234B2 (en) 2010-12-21 2013-03-19 E.I. Du Pont De Nemours And Company Perhydrolase variant providing improved specific activity
WO2012087785A1 (en) 2010-12-21 2012-06-28 E.I. Dupont De Nemours And Company Perhydrolase variant providing improved specific activity
WO2012087793A1 (en) 2010-12-21 2012-06-28 E.I. Dupont De Nemours And Company Perhydrolase variant providing improved specific activity
WO2012087790A1 (en) 2010-12-21 2012-06-28 E.I. Dupont De Nemours And Company Perhydrolase variant providing improved specific activity
US8394616B2 (en) 2010-12-21 2013-03-12 E.I. Du Pont De Nemours And Company Perhydrolase variant providing improved specific activity
WO2012087787A1 (en) 2010-12-21 2012-06-28 E.I. Dupont De Nemours And Company Perhydrolase variant providing improved specific activity
US8389257B2 (en) 2010-12-21 2013-03-05 E. I. Du Pont De Nemours And Company Perhydrolase variant providing improved specific activity
US9551076B2 (en) 2011-05-31 2017-01-24 Clean Chemistry, Inc. Electrochemical reactor and process
US8546119B2 (en) 2011-10-25 2013-10-01 E. I. Du Pont De Nemours And Company Perhydrolase variant providing improved specific activity
US8557556B2 (en) 2011-10-25 2013-10-15 E. I. Du Pont De Nemours And Company Perhydrolase variant providing improved specific activity
US8546120B2 (en) 2011-10-25 2013-10-01 E. I. Du Pont De Nemours And Company Perhydrolase variant providing improved specific activity
US8809030B2 (en) 2011-10-25 2014-08-19 E. I. Du Pont De Nemours And Company Perhydrolase variant providing improved specific activity
US8735125B2 (en) 2011-10-25 2014-05-27 E. I. Du Pont De Nemours And Company Perhydrolase variant providing improved specific activity
US8956843B2 (en) 2011-10-25 2015-02-17 E. I. Du Pont De Nemours And Company Perhydrolase variant providing improved specific activity
WO2013062885A1 (en) 2011-10-25 2013-05-02 E.I. Dupont De Nemours And Company Perhydrolase variant providing improved specific activity
US8486679B2 (en) 2011-10-25 2013-07-16 E. I. Du Pont De Nemours And Company Perhydrolase variant providing improved specific activity
US8962294B2 (en) 2011-10-25 2015-02-24 E. I. Du Pont De Nemours And Company Perhydrolase variant providing improved specific activity
WO2013096045A1 (en) 2011-12-19 2013-06-27 E. I. Du Pont De Nemours And Company Perhydrolase variants providing improved specific activity in the presence of surfactant
CN104350154B (en) 2012-03-30 2020-12-29 纳幕尔杜邦公司 Enzymes useful for peracid production
BR112014024207B1 (en) 2012-03-30 2022-04-05 E.I. Du Pont De Nemours And Company Process for the production of a peroxycarboxylic acid, composition and system for generating and supplying peracid
CA2867998C (en) 2012-03-30 2021-05-04 E. I. Du Pont De Nemours And Company Enzymes useful for peracid production
EP2831252B1 (en) 2012-03-30 2021-11-24 DuPont US Holding, LLC Enzymes useful for peracid production
CA2867939C (en) 2012-03-30 2022-01-04 E. I. Du Pont De Nemours And Company Enzymes useful for peracid production
CA2900460C (en) 2012-09-07 2021-08-31 Clean Chemistry, Llc Systems and methods for generation of reactive oxygen species and applications thereof
FR2997069B1 (en) * 2012-10-18 2014-12-26 Nicolas Saverino METHOD FOR MANUFACTURING A COLORED TRAY
WO2016037149A1 (en) 2014-09-04 2016-03-10 Clean Chemistry, Inc. Method of water treatment utilizing a peracetate oxidant solution
WO2016154531A1 (en) 2015-03-26 2016-09-29 Clean Chemistry, Inc. Systems and methods of reducing a bacteria population in high hydrogen sulfide water
FI127444B (en) * 2015-05-27 2018-06-15 Kemira Oyj Method for reducing pulp viscosity in production of dissolving pulp
WO2017055504A1 (en) * 2015-09-30 2017-04-06 Imerys Minerals Limited Methods for bleaching aqueous pulps and compositions for use in these methods
US10883224B2 (en) 2015-12-07 2021-01-05 Clean Chemistry, Inc. Methods of pulp fiber treatment
CA3007778C (en) 2015-12-07 2023-09-26 Clean Chemistry, Inc. Methods of microbial control
FI127996B (en) * 2016-07-01 2019-07-15 Kemira Oyj A process for treating pulp
US11136714B2 (en) 2016-07-25 2021-10-05 Clean Chemistry, Inc. Methods of optical brightening agent removal
US11311012B1 (en) 2017-09-07 2022-04-26 Clean Chemistry, Inc. Bacterial control in fermentation systems
US11001864B1 (en) 2017-09-07 2021-05-11 Clean Chemistry, Inc. Bacterial control in fermentation systems

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JPH01148891A (en) * 1987-12-04 1989-06-12 Nippon Shokubai Kagaku Kogyo Co Ltd Method for bleaching wood pulp
FI90795C (en) * 1990-06-07 1994-11-22 Ahlstroem Oy Production plant for material or freight flows, especially a cellulose factory
BE1006057A3 (en) * 1992-07-06 1994-05-03 Solvay Interox Method for delignification of chemical pulp.
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CA2163389A1 (en) * 1994-11-23 1996-05-24 Malcolm Cronlund Chlorine-free organosolv pulps
CN1074073C (en) * 1994-12-28 2001-10-31 矿业技术有限公司 Bleaching of filled paper
SE506480C2 (en) * 1995-06-29 1997-12-22 Sca Graphic Res Ab Bleaching of lignocellulosic fibrous material with ozone and peracid in a combination step
JP3698178B2 (en) * 1995-09-22 2005-09-21 三菱瓦斯化学株式会社 Process for bleaching chemical pulp for papermaking
EP0801170A1 (en) * 1996-04-12 1997-10-15 Chemoxal Sa Process for the delignification and/or bleaching of a paper pulp
FI964715A (en) * 1996-11-26 1998-05-27 Keskuslaboratorio Method for bleaching cellulose pulp

Also Published As

Publication number Publication date
PT1040222E (en) 2008-05-05
BR9813747B1 (en) 2009-01-13
JP4499280B2 (en) 2010-07-07
CA2315063A1 (en) 1999-07-01
BR9813747A (en) 2000-10-17
WO1999032710A1 (en) 1999-07-01
EP1040222B1 (en) 2008-02-06
FI112958B (en) 2004-02-13
DE69839097D1 (en) 2008-03-20
AU1674399A (en) 1999-07-12
FI974575A0 (en) 1997-12-19
CA2315063C (en) 2008-11-18
ES2302362T3 (en) 2008-07-01
FI974575A (en) 1999-06-20
EP1040222A1 (en) 2000-10-04
DE69839097T2 (en) 2009-01-29
JP2001527168A (en) 2001-12-25

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