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FI965207L - Förbättrat förfarande för återvinning av filtrat i en blekningsanläggning - Google Patents

Förbättrat förfarande för återvinning av filtrat i en blekningsanläggning Download PDF

Info

Publication number
FI965207L
FI965207L FI965207A FI965207A FI965207L FI 965207 L FI965207 L FI 965207L FI 965207 A FI965207 A FI 965207A FI 965207 A FI965207 A FI 965207A FI 965207 L FI965207 L FI 965207L
Authority
FI
Finland
Prior art keywords
improved method
bleach plant
plant filtrate
recycling
recycling bleach
Prior art date
Application number
FI965207A
Other languages
English (en)
Finnish (fi)
Other versions
FI965207A7 (sv
FI965207A0 (sv
Inventor
Gerald E Maples
Raman Ambady
Original Assignee
Champion Int Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27560835&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI965207(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Champion Int Corp filed Critical Champion Int Corp
Priority claimed from NZ269362A external-priority patent/NZ269362A/en
Publication of FI965207A0 publication Critical patent/FI965207A0/sv
Publication of FI965207A7 publication Critical patent/FI965207A7/sv
Publication of FI965207L publication Critical patent/FI965207L/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
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0021—Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)
    • D21C11/0028—Effluents derived from the washing or bleaching plants
    • 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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI965207A 1991-01-28 1994-06-27 Förbättrat förfarande för återvinning av filtrat i en blekningsanläggning FI965207L (sv)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US64617991A 1991-01-28 1991-01-28
US87367392A 1992-04-24 1992-04-24
US07/944,327 US5352332A (en) 1991-01-28 1992-09-14 Process for recycling bleach plant filtrate
NZ269362A NZ269362A (en) 1991-01-28 1994-06-27 Recycling bleach plant filtrate from the oxidative extraction stage and the first chlorine dioxide bleaching stage
PCT/US1994/007450 WO1996000322A1 (en) 1991-01-28 1994-06-27 Improved process for recycling bleach plant filtrate
BR9408596A BR9408596A (pt) 1991-01-28 1994-06-27 Processo para alvejamento de polpa de madeira kraft
CA002193829A CA2193829A1 (en) 1991-01-28 1994-06-27 Improved process for recycling bleach plant filtrate

Publications (3)

Publication Number Publication Date
FI965207A0 FI965207A0 (sv) 1996-12-23
FI965207A7 FI965207A7 (sv) 1997-02-21
FI965207L true FI965207L (sv) 1997-02-21

Family

ID=27560835

Family Applications (1)

Application Number Title Priority Date Filing Date
FI965207A FI965207L (sv) 1991-01-28 1994-06-27 Förbättrat förfarande för återvinning av filtrat i en blekningsanläggning

Country Status (7)

Country Link
US (1) US5352332A (sv)
EP (1) EP0739434B1 (sv)
BR (1) BR9408596A (sv)
CA (1) CA2193829A1 (sv)
DE (1) DE69416329D1 (sv)
FI (1) FI965207L (sv)
WO (1) WO1996000322A1 (sv)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5549788A (en) * 1992-07-30 1996-08-27 A. Ahlstrom Corporation Minimal effluents discharge pulp mill with chemical recovery
SE9301160L (sv) * 1992-08-28 1994-03-01 Sunds Defibrator Ind Ab Förfarande för behandling av processvatten
SE501613C2 (sv) * 1993-08-03 1995-03-27 Kvaerner Pulping Tech Sätt vid integrering av blekning och återvinning vid framställning av massa
US5554259A (en) * 1993-10-01 1996-09-10 Union Camp Patent Holdings, Inc. Reduction of salt scale precipitation by control of process stream Ph and salt concentration
SE502706E (sv) * 1994-04-05 1999-09-27 Mo Och Domsjoe Ab Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg
SE504374C2 (sv) * 1994-10-20 1997-01-20 Kvaerner Pulping Tech Lakning av elfilteraska
US5759258A (en) * 1995-03-15 1998-06-02 Minerals Technologies Inc. Recycling of mineral fillers from the residue of a paper deinking plant
US5961803A (en) * 1995-07-12 1999-10-05 Eka Chemicals Ab Leaching process
US5728264A (en) * 1995-10-25 1998-03-17 Union Camp Patent Holding, Inc. Avoidance of salt scaling by acidic pulp washing process
SE9603972D0 (sv) * 1996-10-31 1996-10-31 Kvaerner Pulping Tech Förfarande för framställning av aska bestående huvudsakligen av natriumsulfat från en sodapanna
US5980717A (en) * 1997-01-03 1999-11-09 Eka Chemical Ab Recovery process in a pulp mill
SE9700012D0 (sv) * 1997-01-03 1997-01-03 Eka Chemicals Ab Recovery process in a pulp mill
US5922171A (en) * 1997-01-24 1999-07-13 Eco-Tec Limited Method and apparatus for removing sodium chloride from pulping chemicals using an amphoteric ion-exchange resin
SE514825C2 (sv) * 1999-09-16 2001-04-30 Aga Ab Oxygendelignifiering av cellulosamassa med oxiderad vitlut som alkalikälla
US20050087315A1 (en) * 2003-10-28 2005-04-28 Donovan Joseph R. Low consistency oxygen delignification process
FI122626B (sv) * 2006-03-31 2012-04-30 Laennen Tutkimus Western Res Inc Oy Blekningsförfarande för kemisk massa
FI123102B (sv) * 2006-03-31 2012-11-15 Laennen Tutkimus Western Res Inc Oy Blekningsförfarande för kemisk massa
US20080061008A1 (en) * 2006-09-12 2008-03-13 Kelsey Robert L Systems and methods for treating metalworking fluids
US20080110584A1 (en) * 2006-11-15 2008-05-15 Caifang Yin Bleaching process with at least one extraction stage
EP2114829A1 (en) * 2007-02-13 2009-11-11 VRTX Technologies, LLC Systems and methods for treatment of wastewater
US7651621B2 (en) * 2007-04-18 2010-01-26 Vrtx Technologies, Llc Methods for degassing one or more fluids
US20080257411A1 (en) * 2007-04-18 2008-10-23 Kelsey Robert L Systems and methods for preparation of emulsions
US20080257828A1 (en) * 2007-04-18 2008-10-23 Kelsey Robert L Systems and methods for reduction of metal contaminants in fluids
US20090152212A1 (en) * 2007-04-18 2009-06-18 Kelsey Robert L Systems and methods for treatment of groundwater
UY31040A1 (es) * 2007-04-23 2008-11-28 Andritz Oy Proceso de recuperacion para una fabrica de pasta de celulosa
US20090000751A1 (en) * 2007-06-29 2009-01-01 Caifang Yin Bleaching process with at least one extraction stage
US8246779B2 (en) * 2009-09-24 2012-08-21 Noram Engineering And Constructors Ltd. Maintenance of sulfur concentration in Kraft pulp processes
AU2011229776B2 (en) 2010-03-23 2013-11-28 International Paper Company Improved BCTMP filtrate recycling system and method
CN101838945B (zh) * 2010-06-23 2012-11-07 永州湘江纸业有限责任公司 在一种造纸废水循环利用方法
FI126767B (sv) * 2012-11-16 2017-05-15 Andritz Oy Förfarande för utlutning av aska från tillvaratagningspanna
CN104928964B (zh) * 2014-03-18 2017-02-15 中国科学院大连化学物理研究所 一种减少非木浆造纸氯气漂白过程中二噁英生成的方法
SE542676C2 (sv) * 2017-11-29 2020-06-23 Axolot Solutions Ab Method for washer pulp wherein the wash filter is purified and re-circulated
EP3755839B1 (en) 2018-02-23 2024-08-21 GP Cellulose GmbH Novel dissolving wood pulps and methods of making and using the same
US11591751B2 (en) 2019-09-17 2023-02-28 Gpcp Ip Holdings Llc High efficiency fiber bleaching process
US12286751B2 (en) * 2021-01-06 2025-04-29 Gpcp Ip Holdings Llc Oxygen treatment of high kappa fibers
US12435469B2 (en) 2022-02-22 2025-10-07 Gpcp Ip Holdings Llc High yield chemical pulping and bleaching process
EP4428297A1 (en) * 2023-03-06 2024-09-11 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process to obtain fully oxidized white liquor for use in the fiberline of a kraft pulp process

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1217833A (en) * 1967-01-16 1970-12-31 Electric Reduction Co Improved cellulosic pulp process
FI52876C (fi) * 1974-09-03 1978-10-17 Ahlstroem Oy Foerfarande foer tvaettning av en cellulosamassa fraon alkalikok
ZA761255B (en) * 1975-03-11 1977-03-30 Erco Envirotech Ltd Bleachplant operation
US4269656A (en) * 1980-04-02 1981-05-26 Ingersoll-Rand Company Wood pulp forming system and method of recovering spent chemicals
US4619733A (en) * 1983-11-30 1986-10-28 Kooi Boon Lam Pollution free pulping process using recycled wash effluent from multiple bleach stages to remove black liquor and recovering sodium hydroxide from the black liquor
US4946556A (en) * 1989-04-25 1990-08-07 Kamyr, Inc. Method of oxygen delignifying wood pulp with between stage washing

Also Published As

Publication number Publication date
CA2193829A1 (en) 1996-01-04
WO1996000322A1 (en) 1996-01-04
DE69416329D1 (de) 1999-03-11
FI965207A7 (sv) 1997-02-21
FI965207A0 (sv) 1996-12-23
EP0739434B1 (en) 1999-01-27
EP0739434A1 (en) 1996-10-30
US5352332A (en) 1994-10-04
BR9408596A (pt) 1997-08-19

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