UY35127A - METHOD AND SYSTEM TO TREAT LIQUID FLOWS IN CHEMICAL PULP FACTORIES - Google Patents

METHOD AND SYSTEM TO TREAT LIQUID FLOWS IN CHEMICAL PULP FACTORIES

Info

Publication number
UY35127A
UY35127A UY0001035127A UY35127A UY35127A UY 35127 A UY35127 A UY 35127A UY 0001035127 A UY0001035127 A UY 0001035127A UY 35127 A UY35127 A UY 35127A UY 35127 A UY35127 A UY 35127A
Authority
UY
Uruguay
Prior art keywords
liquid flows
pulp
chemical
chemical pulp
factories
Prior art date
Application number
UY0001035127A
Other languages
Spanish (es)
Inventor
Echevarria Lorena
Battegazzore Marcos
Original Assignee
Upm Kymmene 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
Application filed by Upm Kymmene Corp filed Critical Upm Kymmene Corp
Publication of UY35127A publication Critical patent/UY35127A/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
    • 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
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/65—Acid compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/045—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides in presence of O2 or O3
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • 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
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

Esta invención se refiere a un método para tratar flujos de líquidos en fábricas de pulpa química. El método comprende producir pulpa sin blanquear e n una unidad de preparación de pulpa marrón (20), administrar el primer producto químico de acidificación al flujo de pulpa sin blanquear en una fas e de acidificación (26), con el fin de disolver al menos parte de los compuestos de fósforo en el flujo de pulpa sin blanquear, formar un filtrado qu e contiene compuestos de fósforo, extraer por lo menos una parte de dicho filtrado que contiene compuestos de fósforo del flujo de pulpa sin blanque ar en una etapa de extracción de fósforo (27), y blanquear la pulpa sin blanquear en una unidad de blanqueo (30). Además, la invención se refiere a un sistema para tratar flujos de líquidos en fábri cas de pulpa química.This invention relates to a method for treating liquid flows in chemical pulp factories. The method comprises producing unbleached pulp in a brown pulp preparation unit (20), administering the first acidification chemical to the unbleached pulp flow in an acidification fas e (26), in order to dissolve at least part of the phosphorus compounds in the unbleached pulp flow, forming a filtrate containing phosphorus compounds, extracting at least a portion of said filtrate containing phosphorus compounds from the unbleached pulp flow in an extraction stage of phosphorus (27), and bleach the unbleached pulp in a bleaching unit (30). In addition, the invention relates to a system for treating liquid flows in chemical pulp factories.

UY0001035127A 2012-11-09 2013-11-07 METHOD AND SYSTEM TO TREAT LIQUID FLOWS IN CHEMICAL PULP FACTORIES UY35127A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20126177A FI128111B (en) 2012-11-09 2012-11-09 A method and a system for treating liquid flows at a chemical pulp mill

Publications (1)

Publication Number Publication Date
UY35127A true UY35127A (en) 2014-06-30

Family

ID=49619962

Family Applications (1)

Application Number Title Priority Date Filing Date
UY0001035127A UY35127A (en) 2012-11-09 2013-11-07 METHOD AND SYSTEM TO TREAT LIQUID FLOWS IN CHEMICAL PULP FACTORIES

Country Status (6)

Country Link
BR (1) BR112015010402B1 (en)
CL (1) CL2015001236A1 (en)
FI (1) FI128111B (en)
SE (1) SE540757C2 (en)
UY (1) UY35127A (en)
WO (1) WO2014072584A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI127900B (en) * 2014-05-27 2019-05-15 Upm Kymmene Corp A method for reducing phosphorus load in effluent from a pulp production process
CN104404807A (en) * 2014-09-23 2015-03-11 广西大学 Method for reducing AOX forming amount in chlorine dioxide bleaching process of bagasse pulp
FI130747B1 (en) * 2019-02-01 2024-02-26 Metsae Fibre Oy Precipitating organic pollutants from aqueous liquids

Family Cites Families (2)

* 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
FI126551B (en) * 2009-11-25 2017-02-15 Andritz Oy A method for treating fluid flows at a pulp mill

Also Published As

Publication number Publication date
FI20126177A (en) 2014-05-10
CL2015001236A1 (en) 2016-06-10
FI128111B (en) 2019-10-15
BR112015010402A2 (en) 2017-07-11
BR112015010402B1 (en) 2021-11-16
SE540757C2 (en) 2018-10-30
SE1550598A1 (en) 2015-05-08
WO2014072584A1 (en) 2014-05-15

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Legal Events

Date Code Title Description
110 Patent granted

Effective date: 20220811