NO20065354L - Fremgangsmate for framstilling av tremasse - Google Patents

Fremgangsmate for framstilling av tremasse

Info

Publication number
NO20065354L
NO20065354L NO20065354A NO20065354A NO20065354L NO 20065354 L NO20065354 L NO 20065354L NO 20065354 A NO20065354 A NO 20065354A NO 20065354 A NO20065354 A NO 20065354A NO 20065354 L NO20065354 L NO 20065354L
Authority
NO
Norway
Prior art keywords
pulp
wood pulp
lye
extraction step
recycled
Prior art date
Application number
NO20065354A
Other languages
English (en)
Other versions
NO338462B1 (no
Inventor
Herbert Sixta
Original Assignee
Chemiefaser Lenzing Ag
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 Chemiefaser Lenzing Ag filed Critical Chemiefaser Lenzing Ag
Publication of NO20065354L publication Critical patent/NO20065354L/no
Publication of NO338462B1 publication Critical patent/NO338462B1/no

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
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0007—Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Framgangsmåte for framstilling av tremasse ved å: - framskaffe en tremasse ved bruk av i og for seg kjente oppslemmingsprosesser - utføre minst ett alkalisk ekstraksjonstrinn der tremassen behandles med lut og deretter presses ut - valgfritt rense og/eller bleke tremassen, hvorved i det minste en del av luten, som akkumuleres i det alkaliske ekstraksjonstrinnet etter pressing, resirkuleres for behandling av tremassen. Innholdet av betacellulose reduseres i det minste i en del av den resirkulerte luten før ny behandling av tremassen finner sted.
NO20065354A 2004-06-02 2006-11-24 Framgangsmåte for framstilling av tremasse og anvendelse av samme NO338462B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT9532004A AT413548B (de) 2004-06-02 2004-06-02 Verfahren zur herstellung eines chemiezellstoffes und seine verwendung
PCT/AT2005/000171 WO2005118950A1 (de) 2004-06-02 2005-05-20 Verfahren zur herstellung eines chemiezellstoffes

Publications (2)

Publication Number Publication Date
NO20065354L true NO20065354L (no) 2007-01-31
NO338462B1 NO338462B1 (no) 2016-08-22

Family

ID=34842282

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20065354A NO338462B1 (no) 2004-06-02 2006-11-24 Framgangsmåte for framstilling av tremasse og anvendelse av samme

Country Status (6)

Country Link
EP (1) EP1753908B1 (no)
AT (1) AT413548B (no)
CA (1) CA2568594C (no)
NO (1) NO338462B1 (no)
WO (1) WO2005118950A1 (no)
ZA (1) ZA200610044B (no)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503610B1 (de) * 2006-05-10 2012-03-15 Chemiefaser Lenzing Ag Verfahren zur herstellung eines zellstoffes
AT503612A1 (de) * 2006-05-10 2007-11-15 Chemiefaser Lenzing Ag Verfahren zur herstellung eines zellstoffes
AT503611B1 (de) * 2006-05-10 2009-05-15 Chemiefaser Lenzing Ag Verfahren zur herstellung eines zellstoffes
US20150093650A1 (en) 2012-04-26 2015-04-02 Lenzing Aktiengesellschaft Battery separator
FI129086B (en) * 2012-09-14 2021-06-30 Teknologian Tutkimuskeskus Vtt Oy Method for producing soluble pulp
WO2014127828A1 (en) 2013-02-22 2014-08-28 Lenzing Aktiengesellschaft Battery separator
CN104611973A (zh) * 2013-11-04 2015-05-13 新疆光大山河化工科技有限公司 一种精制棉黑液处理工艺
EP3347522B1 (en) * 2015-09-07 2020-06-17 Domsjö Fabriker AB Novel dissolving pulp
JP2017224611A (ja) * 2017-07-06 2017-12-21 レンツィング アクチェンゲゼルシャフト 電池セパレータ
SE1850733A1 (en) * 2018-06-15 2019-12-16 Valmet Oy Method and assembly for optimizing filtrate circulation in a kraft process
SE2250793A1 (en) * 2022-06-27 2023-12-28 Valmet Oy Method for processing cellulose pulp obtained from a kraft process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI49438C (fi) * 1973-07-23 1980-12-23 Keskuslaboratorio Foerfarande foer avlaegsnande av hemicellulosa ur hemicellulosahaltiga alkaliloesningar i processcirkulation
US4270914A (en) * 1979-10-26 1981-06-02 Borregaard Industries Limited Process for controlling hemicellulose concentration during the mercerization of cellulose
US5589053A (en) * 1995-11-03 1996-12-31 Huron Tech Incorporated Electrolysis process for removal of caustic in hemicellulose caustic
AU1136697A (en) * 1995-12-23 1997-07-17 Krebs & Co Ag Process for purifying a liquid contaminated by filamentary molecules

Also Published As

Publication number Publication date
CA2568594C (en) 2013-07-16
WO2005118950A1 (de) 2005-12-15
CA2568594A1 (en) 2005-12-15
EP1753908A1 (de) 2007-02-21
AT413548B (de) 2006-03-15
ZA200610044B (en) 2008-02-27
NO338462B1 (no) 2016-08-22
ATA9532004A (de) 2005-08-15
EP1753908B1 (de) 2016-02-03

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Legal Events

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