FI67894C - Foerfarande och anordning foer blekning av fibermassa - Google Patents

Foerfarande och anordning foer blekning av fibermassa Download PDF

Info

Publication number
FI67894C
FI67894C FI821811A FI821811A FI67894C FI 67894 C FI67894 C FI 67894C FI 821811 A FI821811 A FI 821811A FI 821811 A FI821811 A FI 821811A FI 67894 C FI67894 C FI 67894C
Authority
FI
Finland
Prior art keywords
stage
bleaching
scrubber
chemical
pulp
Prior art date
Application number
FI821811A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI67894B (fi
FI821811A0 (fi
FI821811A (fi
Inventor
Alpo Tuomi
Original Assignee
Rauma Repola Oy
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 Rauma Repola Oy filed Critical Rauma Repola Oy
Priority to FI821811A priority Critical patent/FI67894C/fi
Publication of FI821811A0 publication Critical patent/FI821811A0/fi
Priority to DE19833315479 priority patent/DE3315479A1/de
Priority to AT0160083A priority patent/AT382651B/de
Priority to CA000427469A priority patent/CA1204560A/en
Priority to US06/493,162 priority patent/US4529479A/en
Priority to SE8302828A priority patent/SE462805B/sv
Publication of FI821811A publication Critical patent/FI821811A/fi
Publication of FI67894B publication Critical patent/FI67894B/fi
Application granted granted Critical
Publication of FI67894C publication Critical patent/FI67894C/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
    • D21C9/1026—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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Filtration Of Liquid (AREA)
FI821811A 1982-05-21 1982-05-21 Foerfarande och anordning foer blekning av fibermassa FI67894C (fi)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FI821811A FI67894C (fi) 1982-05-21 1982-05-21 Foerfarande och anordning foer blekning av fibermassa
DE19833315479 DE3315479A1 (de) 1982-05-21 1983-04-28 Verfahren und apparatur zum bleichen von faserstoffen
AT0160083A AT382651B (de) 1982-05-21 1983-05-02 Verfahren und vorrichtung zum bleichen von faserstoff
CA000427469A CA1204560A (en) 1982-05-21 1983-05-04 Method and equipment for pulp bleaching
US06/493,162 US4529479A (en) 1982-05-21 1983-05-10 Method for multistage bleaching and washing with recycle of displaced bleaching liquor
SE8302828A SE462805B (sv) 1982-05-21 1983-05-19 Foerfarande och anordning foer foertraengningsblekning av fibermassa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI821811A FI67894C (fi) 1982-05-21 1982-05-21 Foerfarande och anordning foer blekning av fibermassa
FI821811 1982-05-21

Publications (4)

Publication Number Publication Date
FI821811A0 FI821811A0 (fi) 1982-05-21
FI821811A FI821811A (fi) 1983-11-22
FI67894B FI67894B (fi) 1985-02-28
FI67894C true FI67894C (fi) 1985-06-10

Family

ID=8515567

Family Applications (1)

Application Number Title Priority Date Filing Date
FI821811A FI67894C (fi) 1982-05-21 1982-05-21 Foerfarande och anordning foer blekning av fibermassa

Country Status (6)

Country Link
US (1) US4529479A (de)
AT (1) AT382651B (de)
CA (1) CA1204560A (de)
DE (1) DE3315479A1 (de)
FI (1) FI67894C (de)
SE (1) SE462805B (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5126009A (en) * 1986-05-30 1992-06-30 Pulp And Paper Research Institute Of Canada Process for decreasing the charge of chemical required in a chlorine bleaching extraction stage
US4808265A (en) * 1986-08-07 1989-02-28 Ingersoll-Rand Company Method of washing pulp in a pressure pulp washer adding two washing liquids
US4944842A (en) * 1987-03-26 1990-07-31 Kamyr, Inc. Method for reducing contamination in pulp processing
US4999085A (en) * 1988-10-06 1991-03-12 Sunds Defibrator Rauma Oy Method for screening of defibered chlorine dioxide bleached pulp during alkaline extraction
FI85513C (fi) * 1989-04-07 1992-04-27 Salomans Oy Foerfarande foer behandling av fibermassa med kemikalieloesning.
FI85293C (sv) * 1990-05-04 1992-03-25 Poeyry Jaakko & Co Oy Förfarande för rening och återföring av cellulosafabrikers blekeriavva tten
US5255540A (en) * 1990-06-29 1993-10-26 Beloit Technologies, Inc. Pressurized dynamic washer
US5246542A (en) * 1991-09-18 1993-09-21 Fosberg Theodore M Evaporation and recovery process for bleached chemical thermo-mechanical pulp (BCTMP) effluent
WO1994019534A1 (en) * 1993-02-19 1994-09-01 Salminen Reijo K Wood pulp processing apparatus and method
US6010594A (en) * 1993-03-03 2000-01-04 Ahlstrom Machinery Corporation Method of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stage
US5538632A (en) * 1993-10-28 1996-07-23 Beloit Technologies, Inc. Multiple filter dynamic washer
US5582681A (en) * 1994-06-29 1996-12-10 Kimberly-Clark Corporation Production of soft paper products from old newspaper
US6074527A (en) * 1994-06-29 2000-06-13 Kimberly-Clark Worldwide, Inc. Production of soft paper products from coarse cellulosic fibers
US6001218A (en) * 1994-06-29 1999-12-14 Kimberly-Clark Worldwide, Inc. Production of soft paper products from old newspaper
US6296736B1 (en) 1997-10-30 2001-10-02 Kimberly-Clark Worldwide, Inc. Process for modifying pulp from recycled newspapers
US6387210B1 (en) 1998-09-30 2002-05-14 Kimberly-Clark Worldwide, Inc. Method of making sanitary paper product from coarse fibers
FI121792B (fi) * 2003-06-30 2011-04-15 Andritz Oy Menetelmä massan käsittelemiseksi kemiallisen massan valkaisun yhteydessä
AU2011229776B2 (en) 2010-03-23 2013-11-28 International Paper Company Improved BCTMP filtrate recycling system and method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104114A (en) * 1977-05-05 1978-08-01 Erco Envirotech Ltd. Bleach plant operation

Also Published As

Publication number Publication date
FI67894B (fi) 1985-02-28
SE8302828D0 (sv) 1983-05-19
SE462805B (sv) 1990-09-03
DE3315479C2 (de) 1987-10-08
DE3315479A1 (de) 1983-11-24
ATA160083A (de) 1986-08-15
SE8302828L (sv) 1983-11-22
CA1204560A (en) 1986-05-20
FI821811A0 (fi) 1982-05-21
FI821811A (fi) 1983-11-22
AT382651B (de) 1987-03-25
US4529479A (en) 1985-07-16

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Legal Events

Date Code Title Description
MM Patent lapsed
MM Patent lapsed

Owner name: RAUMA-REPOLA OY