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NO20091573L - Pulp processing - Google Patents

Pulp processing

Info

Publication number
NO20091573L
NO20091573L NO20091573A NO20091573A NO20091573L NO 20091573 L NO20091573 L NO 20091573L NO 20091573 A NO20091573 A NO 20091573A NO 20091573 A NO20091573 A NO 20091573A NO 20091573 L NO20091573 L NO 20091573L
Authority
NO
Norway
Prior art keywords
pulp processing
suspension
dewatering
treating
drying
Prior art date
Application number
NO20091573A
Other languages
Norwegian (no)
Inventor
Hans Johansson-Vestin
Thomas Christopher Greschik
Hakan Fagersten
Original Assignee
Akzo Nobel Nv
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 Akzo Nobel Nv filed Critical Akzo Nobel Nv
Publication of NO20091573L publication Critical patent/NO20091573L/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
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from 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
    • D21C9/001—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
    • 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
    • D21H21/143—Agents preventing ageing of paper, e.g. radiation absorbing substances

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)

Abstract

Foreliggende oppfinnelse omhandler en fremgangsmåte for behandling av en vandig suspensjon av bleket papirmasse avledet fra en alkalisk pulpingprosess som omfatter avvanning og tørking av nevnte suspensjon, hvori pH-verdien i suspensjonen som skal behandles spenner fra omkring 6,5 til 5 omkring 12.The present invention relates to a process for treating an aqueous suspension of bleached pulp derived from an alkaline pulping process comprising dewatering and drying said suspension, wherein the pH of the suspension to be treated ranges from about 6.5 to about 5.

NO20091573A 2006-09-22 2009-04-21 Pulp processing NO20091573L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06121100 2006-09-22
PCT/SE2007/050588 WO2008036031A1 (en) 2006-09-22 2007-08-29 Treatment of pulp

Publications (1)

Publication Number Publication Date
NO20091573L true NO20091573L (en) 2009-04-21

Family

ID=37814621

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20091573A NO20091573L (en) 2006-09-22 2009-04-21 Pulp processing

Country Status (11)

Country Link
EP (1) EP2074257B1 (en)
AR (1) AR062866A1 (en)
BR (1) BRPI0717429A2 (en)
CA (1) CA2664088C (en)
CL (1) CL2007002697A1 (en)
EA (1) EA014734B1 (en)
ES (1) ES2612270T3 (en)
NO (1) NO20091573L (en)
PT (1) PT2074257T (en)
WO (1) WO2008036031A1 (en)
ZA (1) ZA200902765B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012065951A1 (en) 2010-11-16 2012-05-24 Basf Se Manufacture of cellulosic pulp sheets

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA821268B (en) * 1981-03-06 1983-03-30 Courtaulds Ltd Drying wood pulp
SE441107C (en) * 1982-05-07 1991-03-18 Modo Chemetics Ab PROCEDURES FOR PREPARING CHEAP HIGH-EXCHANGE MASS WITH GOOD PAPER CHARACTERISTICS
SE8701252D0 (en) * 1987-03-03 1987-03-25 Eka Nobel Ab SET FOR PAPER MAKING
US5785810A (en) * 1991-08-21 1998-07-28 Salminen; Reijo K. Wood pulp processing apparatus and method
US5695609A (en) * 1992-01-20 1997-12-09 Kemira Oy Process for producing paper
US6077394A (en) * 1998-03-31 2000-06-20 Callaway Chemical Corporation Retention and drainage in alkaline fine paper
US7081184B2 (en) * 2002-05-15 2006-07-25 Weyerhaeuser Company Process for making a very low COD unbleached pulp
SE0400940L (en) * 2004-04-07 2005-08-16 Kvaerner Pulping Tech Method and apparatus for diluting dewatered cellulose pulp

Also Published As

Publication number Publication date
EP2074257A1 (en) 2009-07-01
ZA200902765B (en) 2010-03-31
CL2007002697A1 (en) 2008-03-28
ES2612270T3 (en) 2017-05-16
CA2664088C (en) 2015-02-24
AR062866A1 (en) 2008-12-10
EP2074257B1 (en) 2016-11-23
EA014734B1 (en) 2011-02-28
EA200970314A1 (en) 2009-10-30
PT2074257T (en) 2017-02-10
CA2664088A1 (en) 2008-03-27
WO2008036031A1 (en) 2008-03-27
BRPI0717429A2 (en) 2013-11-12

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application