FI95291C - Ways to bleach pulp - Google Patents

Ways to bleach pulp

Info

Publication number
FI95291C
FI95291C FI906400A FI906400A FI95291C FI 95291 C FI95291 C FI 95291C FI 906400 A FI906400 A FI 906400A FI 906400 A FI906400 A FI 906400A FI 95291 C FI95291 C FI 95291C
Authority
FI
Finland
Prior art keywords
ways
bleach pulp
bleach
pulp
Prior art date
Application number
FI906400A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI906400A0 (en
FI906400A (en
FI95291B (en
Inventor
Charlotte Bosenius
Erik Nilsson
Petter Tibbling
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Publication of FI906400A0 publication Critical patent/FI906400A0/en
Publication of FI906400A publication Critical patent/FI906400A/en
Application granted granted Critical
Publication of FI95291B publication Critical patent/FI95291B/en
Publication of FI95291C publication Critical patent/FI95291C/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
    • D21C9/10—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
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI906400A 1989-12-29 1990-12-27 Ways to bleach pulp FI95291C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8904403A SE467260B (en) 1989-12-29 1989-12-29 WHITING CELLULOSAMASSA WITH CHLORIDE Dioxide AND OZONE IN ONE AND SAME STEP
SE8904403 1989-12-29

Publications (4)

Publication Number Publication Date
FI906400A0 FI906400A0 (en) 1990-12-27
FI906400A FI906400A (en) 1991-06-30
FI95291B FI95291B (en) 1995-09-29
FI95291C true FI95291C (en) 1996-01-10

Family

ID=20377904

Family Applications (1)

Application Number Title Priority Date Filing Date
FI906400A FI95291C (en) 1989-12-29 1990-12-27 Ways to bleach pulp

Country Status (9)

Country Link
JP (1) JPH04289288A (en)
AT (1) AT396129B (en)
BR (1) BR9006578A (en)
CA (1) CA2031848C (en)
DE (1) DE4039099C2 (en)
FI (1) FI95291C (en)
FR (1) FR2656634B1 (en)
NO (1) NO176061C (en)
SE (1) SE467260B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5322598A (en) * 1990-02-06 1994-06-21 Olin Corporation Chlorine dioxide generation using inert load of sodium perchlorate
FI925558A (en) * 1992-04-22 1993-10-23 Ahlstroem Oy FOERFARANDE OCH ANORDNING FOER BLEKNING AV MASSA
US5387317A (en) * 1993-01-28 1995-02-07 The Mead Corporation Oxygen/ozone/peracetic aicd delignification and bleaching of cellulosic pulps
WO1997006304A1 (en) * 1995-08-10 1997-02-20 Sanyo Chemical Industries, Ltd. Process for bleaching cellulose pulp
FR2743094B1 (en) * 1995-12-27 1998-02-13 Centre Tech Ind Papier PROCESS FOR BLEACHING CHEMICAL PULP
ID23571A (en) * 1997-08-25 2000-05-04 Praxair Technology Inc METHOD OF OZONE APPLICATION IN ECF BLEACHING
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
AU8642698A (en) * 1998-07-31 2000-02-28 Asia Pulp & Paper Co Ltd An improved method for bleaching pulp
JP2002069879A (en) * 2000-09-04 2002-03-08 Nippon Paper Industries Co Ltd Method for bleaching pulp of cellulosic fiber material
SE532470C2 (en) * 2008-05-13 2010-02-02 Metso Paper Inc Final bleaching of oxygen delignified pulp with ozone, chlorine dioxide and peroxide
JP5987223B2 (en) * 2012-03-06 2016-09-07 愛媛県 Method for producing cellulose solution, method for producing cellulose, method for saccharification of cellulose
CN111979818A (en) * 2020-08-07 2020-11-24 齐鲁工业大学 Sulfate wood pulp short-procedure ECF bleaching process X/Z/D-EOP-D or X/D/Z-EOP-D
CN111979823A (en) * 2020-08-07 2020-11-24 齐鲁工业大学 Sulfate wood pulp short-process ECF bleaching process X/D-Z-P (X/Z-D-P)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1298875B (en) * 1965-01-09 1969-07-03 Gunnar Alexander Dipl Ing Process for bleaching cellulose in a chlorine bleach bath and with ozone
US4080249A (en) * 1976-06-02 1978-03-21 International Paper Company Delignification and bleaching of a lignocellulosic pulp slurry with ozone
US4902381A (en) * 1988-12-09 1990-02-20 Kamyr, Inc. Method of bleaching pulp with ozone-chlorine mixtures
US4959124A (en) * 1989-05-05 1990-09-25 International Paper Company Method of bleaching kraft pulp in a DZED sequence
FI89516B (en) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande Foer blekning av cellulosamassa med Otson

Also Published As

Publication number Publication date
AT396129B (en) 1993-06-25
FR2656634B1 (en) 1996-07-26
FI906400A0 (en) 1990-12-27
DE4039099C2 (en) 1994-01-27
SE467260B (en) 1992-06-22
NO176061C (en) 1995-01-25
ATA251990A (en) 1992-10-15
FI906400A (en) 1991-06-30
SE8904403L (en) 1991-06-30
NO905599L (en) 1991-07-01
FR2656634A1 (en) 1991-07-05
CA2031848A1 (en) 1991-06-30
JPH04289288A (en) 1992-10-14
CA2031848C (en) 1995-11-21
DE4039099A1 (en) 1991-07-04
SE8904403D0 (en) 1989-12-29
BR9006578A (en) 1991-10-01
FI95291B (en) 1995-09-29
NO905599D0 (en) 1990-12-27
NO176061B (en) 1994-10-17

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Legal Events

Date Code Title Description
HC Name/ company changed in application

Owner name: KVAERNER PULPING TECHNOLOGIES AKTIEBOLAG

BB Publication of examined application
FG Patent granted

Owner name: KVAERNER PULPING AB

PC Transfer of assignment of patent

Owner name: METSO FIBER KARLSTAD AB

Free format text: METSO FIBER KARLSTAD AB