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FI103816B1 - Förfarande och anordning för blekning av massa - Google Patents

Förfarande och anordning för blekning av massa

Info

Publication number
FI103816B1
FI103816B1 FI921776A FI921776A FI103816B1 FI 103816 B1 FI103816 B1 FI 103816B1 FI 921776 A FI921776 A FI 921776A FI 921776 A FI921776 A FI 921776A FI 103816 B1 FI103816 B1 FI 103816B1
Authority
FI
Finland
Prior art keywords
pulp
path
ozone
conduit
mixer
Prior art date
Application number
FI921776A
Other languages
English (en)
Finnish (fi)
Other versions
FI921776A7 (fi
FI103816B (sv
FI921776A0 (fi
Inventor
Kaj Henricson
Joseph R Phillips
Brian Greenwood
Erwin D Funk
Stephen J Dunn
Original Assignee
Ahlstrom Machinery 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 Ahlstrom Machinery Inc filed Critical Ahlstrom Machinery Inc
Publication of FI921776A0 publication Critical patent/FI921776A0/fi
Priority to FI925558A priority Critical patent/FI925558A7/sv
Publication of FI921776A7 publication Critical patent/FI921776A7/fi
Application granted granted Critical
Publication of FI103816B1 publication Critical patent/FI103816B1/sv
Publication of FI103816B publication Critical patent/FI103816B/sv

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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Saccharide Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
FI921776A 1991-06-07 1992-04-22 Förfarande och anordning för blekning av massa FI103816B (sv)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI925558A FI925558A7 (sv) 1992-04-22 1992-12-07 Förfarande och anordning för blekning av massa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/710,439 US5411634A (en) 1991-04-30 1991-06-07 Medium consistency ozone bleaching
US71043991 1991-06-07

Publications (4)

Publication Number Publication Date
FI921776A0 FI921776A0 (fi) 1992-04-22
FI921776A7 FI921776A7 (fi) 1992-12-08
FI103816B1 true FI103816B1 (sv) 1999-09-30
FI103816B FI103816B (sv) 1999-09-30

Family

ID=24854034

Family Applications (1)

Application Number Title Priority Date Filing Date
FI921776A FI103816B (sv) 1991-06-07 1992-04-22 Förfarande och anordning för blekning av massa

Country Status (13)

Country Link
US (1) US5411634A (sv)
EP (1) EP0517691B1 (sv)
JP (1) JP3095526B2 (sv)
AT (1) ATE133728T1 (sv)
AU (1) AU1317292A (sv)
BR (1) BR9202009A (sv)
DE (1) DE69207957T2 (sv)
ES (1) ES2085614T3 (sv)
FI (1) FI103816B (sv)
MX (1) MX9202683A (sv)
NO (1) NO922239L (sv)
RU (1) RU2082846C1 (sv)
ZA (1) ZA922293B (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI925558A7 (sv) * 1992-04-22 1993-10-23 Andritz Oy Förfarande och anordning för blekning av massa
US6174409B1 (en) 1997-09-19 2001-01-16 American Air Liquide Inc. Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO144711C (no) 1978-04-04 1981-10-21 Myrens Verksted As Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon
US4372812A (en) * 1978-04-07 1983-02-08 International Paper Company Chlorine free process for bleaching lignocellulosic pulp
US4902381A (en) * 1988-12-09 1990-02-20 Kamyr, Inc. Method of bleaching pulp with ozone-chlorine mixtures
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
US5034095A (en) * 1989-06-01 1991-07-23 Oji Paper Co., Ltd. Apparatus and process for the delignification of cellulose pulp
AU636173B2 (en) * 1989-10-30 1993-04-22 Lenzing Aktiengesellschaft Method for the chlorine-free bleaching of pulps

Also Published As

Publication number Publication date
US5411634A (en) 1995-05-02
NO922239L (no) 1992-12-08
MX9202683A (es) 1993-08-01
ATE133728T1 (de) 1996-02-15
ES2085614T3 (es) 1996-06-01
RU2082846C1 (ru) 1997-06-27
FI921776A7 (fi) 1992-12-08
FI103816B (sv) 1999-09-30
FI921776A0 (fi) 1992-04-22
BR9202009A (pt) 1993-01-19
AU1317292A (en) 1992-12-10
EP0517691A1 (en) 1992-12-09
DE69207957T2 (de) 1996-09-19
NO922239D0 (no) 1992-06-05
JPH05163691A (ja) 1993-06-29
EP0517691B1 (en) 1996-01-31
DE69207957D1 (de) 1996-03-14
JP3095526B2 (ja) 2000-10-03
ZA922293B (en) 1992-11-25

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Legal Events

Date Code Title Description
HC Name/ company changed in application

Owner name: AHLSTROM MACHINERY INC.

MA Patent expired