FI95292C - Massan valkaisutapa - Google Patents

Massan valkaisutapa Download PDF

Info

Publication number
FI95292C
FI95292C FI906401A FI906401A FI95292C FI 95292 C FI95292 C FI 95292C FI 906401 A FI906401 A FI 906401A FI 906401 A FI906401 A FI 906401A FI 95292 C FI95292 C FI 95292C
Authority
FI
Finland
Prior art keywords
ozone
chlorine dioxide
pulp
bleaching
added
Prior art date
Application number
FI906401A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI95292B (fi
FI906401A0 (fi
FI906401A (fi
Inventor
Petter Tibbling
Erik Nilsson
Charlotte Bosenius
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 FI906401A0 publication Critical patent/FI906401A0/fi
Publication of FI906401A publication Critical patent/FI906401A/fi
Publication of FI95292B publication Critical patent/FI95292B/fi
Application granted granted Critical
Publication of FI95292C publication Critical patent/FI95292C/fi

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)
FI906401A 1989-12-29 1990-12-27 Massan valkaisutapa FI95292C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8904404A SE467261B (sv) 1989-12-29 1989-12-29 Blekning av cellulosamassa med klordioxid och ozon i ett och samma steg
SE8904404 1989-12-29

Publications (4)

Publication Number Publication Date
FI906401A0 FI906401A0 (fi) 1990-12-27
FI906401A FI906401A (fi) 1991-06-30
FI95292B FI95292B (fi) 1995-09-29
FI95292C true FI95292C (fi) 1996-01-10

Family

ID=20377905

Family Applications (1)

Application Number Title Priority Date Filing Date
FI906401A FI95292C (fi) 1989-12-29 1990-12-27 Massan valkaisutapa

Country Status (9)

Country Link
JP (1) JP2934512B2 (pt)
AT (1) AT395444B (pt)
BR (1) BR9006579A (pt)
CA (1) CA2031850C (pt)
DE (1) DE4039294C2 (pt)
FI (1) FI95292C (pt)
FR (1) FR2656633B1 (pt)
NO (1) NO176060C (pt)
SE (1) SE467261B (pt)

Families Citing this family (6)

* 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
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
SE522593C2 (sv) * 1999-07-06 2004-02-24 Kvaerner Pulping Tech System och förfarande för syragasdelignifiering av massa av lignocellulosahaltigt material
GB0322598D0 (en) 2003-09-26 2003-10-29 Victrex Mfg Ltd Polymeric material
JP5987223B2 (ja) * 2012-03-06 2016-09-07 愛媛県 セルロース溶液の製造方法、セルロースの製造方法、セルロースの糖化方法
CN110656527A (zh) * 2019-09-12 2020-01-07 华南理工大学 一种臭氧和二氧化氯协同高效漂白中浓纸浆的方法及装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1298875B (de) * 1965-01-09 1969-07-03 Gunnar Alexander Dipl Ing Verfahren zum Bleichen von Zellstoff im chlorhaltigen Bleichbad und mit Ozon
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 (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson

Also Published As

Publication number Publication date
JP2934512B2 (ja) 1999-08-16
FR2656633A1 (fr) 1991-07-05
ATA251890A (de) 1992-05-15
SE8904404D0 (sv) 1989-12-29
BR9006579A (pt) 1991-10-01
NO176060B (no) 1994-10-17
SE8904404L (sv) 1991-06-30
CA2031850C (en) 1995-11-21
DE4039294C2 (de) 1993-11-11
FI95292B (fi) 1995-09-29
FI906401A0 (fi) 1990-12-27
DE4039294A1 (de) 1991-07-04
NO905598D0 (no) 1990-12-27
NO905598L (no) 1991-07-01
CA2031850A1 (en) 1991-06-30
SE467261B (sv) 1992-06-22
FI906401A (fi) 1991-06-30
FR2656633B1 (fr) 1996-06-07
AT395444B (de) 1992-12-28
JPH04263687A (ja) 1992-09-18
NO176060C (no) 1995-01-25

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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