CA2258387A1 - Elimination des ions de metaux de transition des fibres de pate de bois - Google Patents

Elimination des ions de metaux de transition des fibres de pate de bois Download PDF

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Publication number
CA2258387A1
CA2258387A1 CA002258387A CA2258387A CA2258387A1 CA 2258387 A1 CA2258387 A1 CA 2258387A1 CA 002258387 A CA002258387 A CA 002258387A CA 2258387 A CA2258387 A CA 2258387A CA 2258387 A1 CA2258387 A1 CA 2258387A1
Authority
CA
Canada
Prior art keywords
pulp
practiced
dtpa
recited
mat
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
CA002258387A
Other languages
English (en)
Inventor
Yonghao Ni
Adriaan Reinhard Pieter Van Heiningen
Zhiqing Li
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz Inc
Original Assignee
Ahlstrom Machinery Inc.
Andritz Inc.
Andritz-Ahlstrom Inc.
Yonghao Ni
Adriaan Reinhard Pieter Van Heiningen
Zhiqing Li
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 Ahlstrom Machinery Inc., Andritz Inc., Andritz-Ahlstrom Inc., Yonghao Ni, Adriaan Reinhard Pieter Van Heiningen, Zhiqing Li filed Critical Ahlstrom Machinery Inc.
Publication of CA2258387A1 publication Critical patent/CA2258387A1/fr
Withdrawn legal-status Critical Current

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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA002258387A 1998-02-19 1999-01-06 Elimination des ions de metaux de transition des fibres de pate de bois Withdrawn CA2258387A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2586598A 1998-02-19 1998-02-19
US09/025,865 1998-02-19

Publications (1)

Publication Number Publication Date
CA2258387A1 true CA2258387A1 (fr) 1999-08-19

Family

ID=21828470

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002258387A Withdrawn CA2258387A1 (fr) 1998-02-19 1999-01-06 Elimination des ions de metaux de transition des fibres de pate de bois

Country Status (4)

Country Link
JP (1) JPH11279966A (fr)
CA (1) CA2258387A1 (fr)
FI (1) FI990278A (fr)
SE (1) SE9900178L (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4973284B2 (ja) * 2007-03-30 2012-07-11 栗田工業株式会社 パルプ洗浄剤、パルプ製造方法、及びパルプ洗浄方法

Also Published As

Publication number Publication date
JPH11279966A (ja) 1999-10-12
FI990278A0 (fi) 1999-02-12
FI990278A (fi) 1999-08-20
SE9900178L (sv) 1999-08-20
SE9900178D0 (sv) 1999-01-21

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Legal Events

Date Code Title Description
AZWI Withdrawn application