ATE172504T1 - Verfahren zum bleichen von holzzellstoff mittels wasserstoffperoxid - Google Patents

Verfahren zum bleichen von holzzellstoff mittels wasserstoffperoxid

Info

Publication number
ATE172504T1
ATE172504T1 AT95925355T AT95925355T ATE172504T1 AT E172504 T1 ATE172504 T1 AT E172504T1 AT 95925355 T AT95925355 T AT 95925355T AT 95925355 T AT95925355 T AT 95925355T AT E172504 T1 ATE172504 T1 AT E172504T1
Authority
AT
Austria
Prior art keywords
pulp
hydrogen peroxide
phase
reaction
residual
Prior art date
Application number
AT95925355T
Other languages
German (de)
English (en)
Inventor
Gustavo L Bottan
Original Assignee
Beloit Technologies Inc
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 Beloit Technologies Inc filed Critical Beloit Technologies Inc
Application granted granted Critical
Publication of ATE172504T1 publication Critical patent/ATE172504T1/de

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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • 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
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
AT95925355T 1994-07-11 1995-06-28 Verfahren zum bleichen von holzzellstoff mittels wasserstoffperoxid ATE172504T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27355694A 1994-07-11 1994-07-11

Publications (1)

Publication Number Publication Date
ATE172504T1 true ATE172504T1 (de) 1998-11-15

Family

ID=23044429

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95925355T ATE172504T1 (de) 1994-07-11 1995-06-28 Verfahren zum bleichen von holzzellstoff mittels wasserstoffperoxid

Country Status (9)

Country Link
EP (1) EP0770158B1 (fi)
JP (1) JPH09508184A (fi)
AT (1) ATE172504T1 (fi)
BR (1) BR9508390A (fi)
CA (1) CA2194881A1 (fi)
DE (1) DE69505536D1 (fi)
FI (1) FI970106A (fi)
WO (1) WO1996001922A1 (fi)
ZA (1) ZA955190B (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106758446B (zh) * 2016-11-17 2018-03-06 鲁洪飞 一种环保制浆工艺

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207157C1 (de) * 1982-02-27 1983-06-09 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von halbgebleichten Zellstoffen
FR2582692B1 (fr) * 1985-05-29 1987-12-11 Atochem Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment
FR2661430B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde d'hydrogene de pates a papier a haut rendement.

Also Published As

Publication number Publication date
ZA955190B (en) 1996-03-14
EP0770158A1 (en) 1997-05-02
EP0770158B1 (en) 1998-10-21
JPH09508184A (ja) 1997-08-19
FI970106A0 (fi) 1997-01-10
FI970106A (fi) 1997-01-10
DE69505536D1 (de) 1998-11-26
CA2194881A1 (en) 1996-01-25
WO1996001922A1 (en) 1996-01-25
BR9508390A (pt) 1997-10-28

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties