EA200970314A1 - PULP PROCESSING - Google Patents

PULP PROCESSING

Info

Publication number
EA200970314A1
EA200970314A1 EA200970314A EA200970314A EA200970314A1 EA 200970314 A1 EA200970314 A1 EA 200970314A1 EA 200970314 A EA200970314 A EA 200970314A EA 200970314 A EA200970314 A EA 200970314A EA 200970314 A1 EA200970314 A1 EA 200970314A1
Authority
EA
Eurasian Patent Office
Prior art keywords
pulp processing
suspension
treating
drying
processed
Prior art date
Application number
EA200970314A
Other languages
Russian (ru)
Other versions
EA014734B1 (en
Inventor
Томас Кристофер Грескик
Ханс Йоханссон-Вестин
Хокан Фегерстен
Original Assignee
Акцо Нобель Н.В.
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 Акцо Нобель Н.В. filed Critical Акцо Нобель Н.В.
Publication of EA200970314A1 publication Critical patent/EA200970314A1/en
Publication of EA014734B1 publication Critical patent/EA014734B1/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

Настоящее изобретение относится к способу обработки водной суспензии беленой целлюлозы, полученной щелочной варкой, включающему обезвоживание и высушивание указанной суспензии, где рН подлежащей обработке суспензии находится в диапазоне от приблизительно 6,5 до приблизительно 12.The present invention relates to a process for treating an aqueous suspension of bleached pulp obtained by alkaline cooking, including dewatering and drying said suspension, where the pH of the suspension to be processed is in the range of from about 6.5 to about 12.

EA200970314A 2006-09-22 2007-08-29 Method for treating of pulp EA014734B1 (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 (2)

Publication Number Publication Date
EA200970314A1 true EA200970314A1 (en) 2009-10-30
EA014734B1 EA014734B1 (en) 2011-02-28

Family

ID=37814621

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200970314A EA014734B1 (en) 2006-09-22 2007-08-29 Method for treating of pulp

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
ES2570175T3 (en) 2010-11-16 2016-05-17 Basf Se Manufacture of cellulose 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 1991-03-07 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
AU3217399A (en) * 1998-03-31 1999-10-18 Callaway Corporation Improving 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
SE526292C2 (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
ZA200902765B (en) 2010-03-31
EP2074257B1 (en) 2016-11-23
EP2074257A1 (en) 2009-07-01
AR062866A1 (en) 2008-12-10
BRPI0717429A2 (en) 2013-11-12
CA2664088A1 (en) 2008-03-27
CA2664088C (en) 2015-02-24
EA014734B1 (en) 2011-02-28
ES2612270T3 (en) 2017-05-16
WO2008036031A1 (en) 2008-03-27
NO20091573L (en) 2009-04-21
PT2074257T (en) 2017-02-10
CL2007002697A1 (en) 2008-03-28

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Legal Events

Date Code Title Description
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM AZ BY KZ KG MD TJ TM

PC4A Registration of transfer of a eurasian patent by assignment
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): RU