[go: up one dir, main page]

WO2008152188A3 - Method for treating pulp at a chemical pulp mill - Google Patents

Method for treating pulp at a chemical pulp mill Download PDF

Info

Publication number
WO2008152188A3
WO2008152188A3 PCT/FI2008/000069 FI2008000069W WO2008152188A3 WO 2008152188 A3 WO2008152188 A3 WO 2008152188A3 FI 2008000069 W FI2008000069 W FI 2008000069W WO 2008152188 A3 WO2008152188 A3 WO 2008152188A3
Authority
WO
WIPO (PCT)
Prior art keywords
plant
chemical
pulp
effluent
bleaching
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/FI2008/000069
Other languages
French (fr)
Other versions
WO2008152188A2 (en
Inventor
Janne Vehmaa
Olavi Pikka
Pekka Tervola
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz Oy
Original Assignee
Andritz 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
Priority claimed from FI20070477A external-priority patent/FI122812B/en
Application filed by Andritz Oy filed Critical Andritz Oy
Publication of WO2008152188A2 publication Critical patent/WO2008152188A2/en
Publication of WO2008152188A3 publication Critical patent/WO2008152188A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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)
    • 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
    • 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
    • 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
    • D21C11/10—Concentrating spent liquor by evaporation
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

The present invention relates to a method for treating pulp at a chemical pulping plant comprising at least a pulp bleaching plant using elementary chlorine free bleaching and having at least one chlorine dioxide stage, and wherein chloride-containing effluents are formed, a chemical recovery plant comprising a black liquor evaporation plant and a chemical recovery boiler plant, and effluent purification. An object of the present invention is to offer a method for utilizing liquid flows generated at a chemical pulp mill in an advantageous objet and for efficiently circulating them and minimizing the emissions from the mill. A characteristic feature of the method is that chloride-containing bleaching plant effluents are led to effluent purification, where they are treated in order to decrease the organic matter content thereof, that purified effluent is led back to a chemical pulp mill process, so that at least 20 % of the liquid used for brown stock washing is purified effluent and that condensates originating from the evaporation plant are used in the amount of at least 1 m3/adt pulp as washing or dilution water of the bleaching for reducing the total amount of effluent, and that a separation process for chlorides is arranged at the chemical recovery boiler plant for decreasing the chloride level of the chemical cycle.
PCT/FI2008/000069 2007-06-15 2008-06-13 Method for treating pulp at a chemical pulp mill Ceased WO2008152188A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FI20070477A FI122812B (en) 2007-06-15 2007-06-15 Process for treating liquid streams in a cellulose plant
FI20070477 2007-06-15
FI20080145 2008-02-22
FI20080145A FI122246B (en) 2007-06-15 2008-02-22 Procedure for treating pulp at a pulp mill

Publications (2)

Publication Number Publication Date
WO2008152188A2 WO2008152188A2 (en) 2008-12-18
WO2008152188A3 true WO2008152188A3 (en) 2009-03-05

Family

ID=39148925

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2008/000069 Ceased WO2008152188A2 (en) 2007-06-15 2008-06-13 Method for treating pulp at a chemical pulp mill

Country Status (2)

Country Link
FI (1) FI122246B (en)
WO (1) WO2008152188A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI127290B (en) * 2012-11-12 2018-03-15 Upm Kymmene Corp A method and system for treating fluid flows at a pulp mill
FI127601B (en) * 2014-04-03 2018-10-15 Andritz Oy Process for handling beverage solution from a process for the extraction of lignin
FI128252B (en) * 2015-11-04 2020-01-31 Kemira Oyj Method for optimising material recovery in a chemical pulping process

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5300191A (en) * 1992-07-30 1994-04-05 Kamyr, Inc. Chlorine dioxide generation for a zero discharge pulp mill
WO1994020675A1 (en) * 1993-03-02 1994-09-15 Kamyr, Inc. Zero discharge mill distillation, salt recovery, and water management
US5380402A (en) * 1992-07-30 1995-01-10 Kamyr, Inc. Reducing pulp mill liquid discharge
WO1995018884A1 (en) * 1994-01-04 1995-07-13 Nils Mannbro Process for the recovery of chemicals and energy from pulp bleaching effluent
US5785810A (en) * 1991-08-21 1998-07-28 Salminen; Reijo K. Wood pulp processing apparatus and method
US5938892A (en) * 1991-01-28 1999-08-17 Champion International Corporation Process for recycling bleach plant filtrate
US6210527B1 (en) * 1994-03-14 2001-04-03 The Boc Group, Inc. Pulp bleaching method wherein an ozone bleaching waste stream is scrubbed to form an oxygen containing stream
US6336994B1 (en) * 1992-12-02 2002-01-08 Kvaerner Pulping Aktiebolag Totally chlorine free bleaching process using recovered filtrate
US6569284B1 (en) * 1996-09-24 2003-05-27 International Paper Company Elemental-chlorine-free bleaching process having an initial Eo or Eop stage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100422434C (en) 2002-06-07 2008-10-01 安德里兹公司 System for producing energy at a pulp mill
EP1924739B1 (en) 2005-04-22 2013-12-25 Andritz Oy Apparatus and method for producing energy at a pulp mill
US10787708B2 (en) 2017-07-12 2020-09-29 Macau University Of Science And Technology Method of identifying a gene associated with a disease or pathological condition of the disease

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5938892A (en) * 1991-01-28 1999-08-17 Champion International Corporation Process for recycling bleach plant filtrate
US5785810A (en) * 1991-08-21 1998-07-28 Salminen; Reijo K. Wood pulp processing apparatus and method
US5300191A (en) * 1992-07-30 1994-04-05 Kamyr, Inc. Chlorine dioxide generation for a zero discharge pulp mill
US5380402A (en) * 1992-07-30 1995-01-10 Kamyr, Inc. Reducing pulp mill liquid discharge
US6336994B1 (en) * 1992-12-02 2002-01-08 Kvaerner Pulping Aktiebolag Totally chlorine free bleaching process using recovered filtrate
WO1994020675A1 (en) * 1993-03-02 1994-09-15 Kamyr, Inc. Zero discharge mill distillation, salt recovery, and water management
WO1995018884A1 (en) * 1994-01-04 1995-07-13 Nils Mannbro Process for the recovery of chemicals and energy from pulp bleaching effluent
US6210527B1 (en) * 1994-03-14 2001-04-03 The Boc Group, Inc. Pulp bleaching method wherein an ozone bleaching waste stream is scrubbed to form an oxygen containing stream
US6569284B1 (en) * 1996-09-24 2003-05-27 International Paper Company Elemental-chlorine-free bleaching process having an initial Eo or Eop stage

Also Published As

Publication number Publication date
FI20080145A0 (en) 2008-02-22
FI122246B (en) 2011-10-31
WO2008152188A2 (en) 2008-12-18
FI20080145L (en) 2008-12-16

Similar Documents

Publication Publication Date Title
WO2008152187A3 (en) Method for treating liquid flows at a chemical pulp mill
Salameh et al. Energy saving in the process of bioethanol production from renewable paper mill sludge
JP5191536B2 (en) Methods for cleaning pulp in chemical pulp mills.
Tripathi et al. A comparative study on physico-chemical properties of pulp and paper mill effluent
WO2008152188A3 (en) Method for treating pulp at a chemical pulp mill
CN104169493B (en) A method and system for treating liquid streams in a chemical pulp mill
FI65830C (en) SAETT ATT BEHANDLA UTSLAEPP FRAON MASSABLEKNING
FI129114B (en) A method and a system for treating liquid flows at a chemical pulp mill
SE461991B (en) SET TO DELIGNIFY CHEMICAL MASS BY OXYGEN ALKALI TREATMENT
AU2010323001B2 (en) Method of treating liquid flows at a chemical pulp mill
FI127290B (en) A method and system for treating fluid flows at a pulp mill
WO2014072584A1 (en) A method and a system for treating liquid flows at a chemical pulp mill
CN105829250A (en) Method for treatment of industrial water circuits using biocides
SE501613C2 (en) Method of integrating bleaching and recycling in pulp production
WO2008152189A3 (en) Method for treating liquid flows at a chemical pulp mill
CN104169494B (en) A kind of method and system in chemical pulp mills treatment fluid stream
CN101230548A (en) A chemical pulp non-elemental chlorine bleaching process
Quezada et al. Reuse of ultrafiltration membrane permeate and retentate of (EPO) filtrates from a kraft pulp mill bleaching plant
SE500390C2 (en) Extraction of wastewater from mechanical pulping in the washing process of the chemical cooking process
Mannbro Closed-cycle recovery and combustion of bleachery filtrate: Part 2. Heat balance and chemical process modifications
Sundaram et al. Physico chemical characteristics of paper mill effluents and its treatment process
Ala-Kaila et al. Possibilities of fractional filtrate configurations: Case: Bleaching of wood pulp fibres

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08775447

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08775447

Country of ref document: EP

Kind code of ref document: A2