BR9711886A - Processos para o tratamento de um efluente de gerador de dióxido de cloro, e, para o tratamento de torta salgada de subproduto efluente de cloro subatmosférico - Google Patents

Processos para o tratamento de um efluente de gerador de dióxido de cloro, e, para o tratamento de torta salgada de subproduto efluente de cloro subatmosférico

Info

Publication number
BR9711886A
BR9711886A BR9711886-9A BR9711886A BR9711886A BR 9711886 A BR9711886 A BR 9711886A BR 9711886 A BR9711886 A BR 9711886A BR 9711886 A BR9711886 A BR 9711886A
Authority
BR
Brazil
Prior art keywords
effluent
acid
chlorine dioxide
treatment
chlorine
Prior art date
Application number
BR9711886-9A
Other languages
English (en)
Inventor
Michael Paelologou
Rokhsareh Thompson
Craig J Brown
Michael Sheedy
Original Assignee
Pulp Paper Res Inst
Eco Tec
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 Pulp Paper Res Inst, Eco Tec filed Critical Pulp Paper Res Inst
Publication of BR9711886A publication Critical patent/BR9711886A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/90—Separation; Purification
    • C01B17/901—Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids
    • C01B17/904—Recovery from spent acids containing metallic ions, e.g. hydrolysis acids, pickling acids by ion-exchange
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00—Oxides or oxyacids of halogens; Salts thereof
    • C01B11/02—Oxides of chlorine
    • C01B11/022—Chlorine dioxide (ClO2)
    • C01B11/023—Preparation from chlorites or chlorates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
    • C01D5/16—Purification
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S423/00—Chemistry of inorganic compounds
    • Y10S423/09—Reaction techniques
    • Y10S423/14—Ion exchange; chelation or liquid/liquid ion extraction

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Processing Of Solid Wastes (AREA)
  • Paper (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

"PROCESSOS PARA O TRATAMENTO DE UM EFLUENTE DE GERADOR DE DIóXIDO DE CLORO, E, PARA O TRATAMENTO DE TORTA SALGADA DE SUBPRODUTO EFLUENTE DE CLORO SUBPRODUTO EFLUENTE DE CLORO SUBATMOSFéRICO". Um processo empregando uma Unidade de Retardamento ácido (ARU) de leito de resina fixa para separar ácido despendido de geradores de dióxido de cloro em um componente sulfato de sódio desacidificado e um componente ácido sulfúrico purificado. O sulfato de sódio desacidificado produzido é retornado para o ciclo de recuperação química da usina de "kraft" no lugar do efluente de gerador de dióxido de cloro ácido deste modo evitando a destruição de alcalinidade em licores de usina de polpa. Em adição, ácido sulfúrico é purificado fornecendo uma oportunidade para reutilização em várias aplicações de usina, e/ou concentrado e reciclado para o gerador. Alternativamente, para evitar custos de evaporação altos, o ácido purificado por ser usado para regenerar uma unidade de troca catiónica (CEU) usada na conversão de clorato de sódio em uma mistura ácido clórico/clorato de sódio que é alimentada no gerador no lugar de clorato de sódio e ácido sulfúrico. Usando esta abordagem, o requisito de ácido sulfúrico de geradores de dióxido de cloro e, sucessivamene, a quantidade de efluente de gerador ácido pode ser reduzida. O processo é aplicável a geradores de dióxido de cloro tanto atmosféricos como subatmosféricos. No último caso, a concentração do ácido sulfúrico purificado da ARU ou qualquer outro sistema de separação de ácido pode ser aumentada usando-se uma porção dele para dissolver o subproduto sesquissulfato de sódio de tais geradores.
BR9711886-9A 1996-10-11 1997-10-09 Processos para o tratamento de um efluente de gerador de dióxido de cloro, e, para o tratamento de torta salgada de subproduto efluente de cloro subatmosférico BR9711886A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/729,148 US5792441A (en) 1996-10-11 1996-10-11 Fixed-resin bed technologies for the treatment of the chlorine dioxide generator effluent and feeds stream
PCT/CA1997/000750 WO1998016462A1 (en) 1996-10-11 1997-10-09 Treatment of chlorine dioxide generator effluent and feed streams with fixed-resin bed

Publications (1)

Publication Number Publication Date
BR9711886A true BR9711886A (pt) 1999-09-21

Family

ID=24929785

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9711886-9A BR9711886A (pt) 1996-10-11 1997-10-09 Processos para o tratamento de um efluente de gerador de dióxido de cloro, e, para o tratamento de torta salgada de subproduto efluente de cloro subatmosférico

Country Status (9)

Country Link
US (1) US5792441A (pt)
EP (1) EP0946408B1 (pt)
JP (1) JP3413210B2 (pt)
AU (1) AU4546897A (pt)
BR (1) BR9711886A (pt)
CA (1) CA2265728C (pt)
DE (1) DE69704121T2 (pt)
ID (1) ID21237A (pt)
WO (1) WO1998016462A1 (pt)

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CA2548522A1 (en) * 2003-12-18 2005-07-07 Johnsondiversey, Inc. Addition of salt to depress ph in the generation of chlorine dioxide
US7754057B2 (en) * 2004-07-29 2010-07-13 Pureline Treatment Systems, Llc Chlorine dioxide solution generator
US7799198B2 (en) * 2004-07-29 2010-09-21 Pureline Treatment Systems, Llc Chlorine dioxide solution generator with temperature control capability
US7833392B2 (en) * 2004-07-29 2010-11-16 Pureline Treatment Systems, Llc Chlorine dioxide solution generator
DE102004053090A1 (de) * 2004-11-03 2006-05-04 Basf Ag Verfahren zur Herstellung von Natriumdithionit
US7632479B2 (en) * 2006-08-31 2009-12-15 Iogen Energy Corporation Process for producing ammonia and sulfuric acid from a stream comprising ammonium sulfate
ES2366069T3 (es) * 2007-01-12 2011-10-17 Akzo Nobel N.V. Procedimiento para la producción de dióxido de cloro.
FI20080298L (fi) * 2007-06-15 2009-10-22 Andritz Oy Menetelmä nestevirtojen käsittelemiseksi ja käyttämiseksi sellutehtaalla
US20100239467A1 (en) 2008-06-17 2010-09-23 Brent Constantz Methods and systems for utilizing waste sources of metal oxides
WO2010009273A1 (en) 2008-07-16 2010-01-21 Calera Corporation Co2 utilization in electrochemical systems
US8869477B2 (en) 2008-09-30 2014-10-28 Calera Corporation Formed building materials
CN101918614A (zh) 2009-02-10 2010-12-15 卡勒拉公司 用氢和电催化电极低电压生产碱
EP2250127A4 (en) 2009-03-02 2011-04-06 Calera Corp SYSTEMS AND METHODS FOR REMOVAL OF MULTI-POLLUTANTS FROM GASEOUS CURRENTS
US8246779B2 (en) * 2009-09-24 2012-08-21 Noram Engineering And Constructors Ltd. Maintenance of sulfur concentration in Kraft pulp processes
WO2011097468A2 (en) * 2010-02-05 2011-08-11 Calera Corporation Acid separation by acid retardation on an ion exchange resin in an electrochemical system
CL2010001609A1 (es) * 2010-12-29 2011-03-18 Univ De Concepcion 50% Proceso para obtener tall oil util que comprende la reaccion entre una solucion de sesquisulfato de sodio y jabon de tall oil.
CA2981729C (en) 2015-04-21 2018-10-02 Fpinnovations Method for recovering an acid from acid/sugar solutions
AU2018232890B2 (en) * 2017-12-19 2024-09-26 Eco-Tec Inc. Catalytic Regeneration of Resin for Antimony Removal
CN110386639B (zh) * 2018-04-18 2022-01-21 国家能源投资集团有限责任公司 含二价阴离子盐和一价阴离子盐的盐水的处理方法和系统
CN108975556B (zh) * 2018-08-08 2021-07-30 昆山尚道源环境技术有限公司 净化回收老化磷酸抛光液的方法
CN109231603A (zh) * 2018-11-21 2019-01-18 江苏南大环保科技有限公司 在粘胶纤维生产工艺中协同处置酸性废液的方法及装置
CN115304135A (zh) * 2022-07-22 2022-11-08 安徽润岳科技有限责任公司 一种用于发泡剂母液水回收利用的电渗析系统

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US3099529A (en) * 1960-01-29 1963-07-30 Dow Chemical Co Separation of nitric acid from its salts
US3810969A (en) * 1971-06-22 1974-05-14 Hooker Chemical Corp Process for the production of chlorine dioxide
US3975505A (en) * 1974-12-13 1976-08-17 Hooker Chemicals & Plastics Corporation Production of chlorine dioxide
CA1080433A (en) * 1976-03-19 1980-07-01 Erco Industries Limited High efficiency chlorine dioxide production at low acidity
CA1079482A (en) * 1976-05-27 1980-06-17 John Howard Method of separating sulfuric acid from neutral sodium sulphate
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US4325934A (en) * 1980-09-22 1982-04-20 Erco Industries Limited Production of chlorine dioxide with conversion of by-product solid phase sodium acid sulphate to its neutral form
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CA1242306A (en) * 1984-07-30 1988-09-27 Tenneco Canada Inc. Acid recovery in chlorine dioxide generation
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Also Published As

Publication number Publication date
EP0946408B1 (en) 2001-02-21
ID21237A (id) 1999-05-06
AU4546897A (en) 1998-05-11
CA2265728C (en) 2002-07-30
EP0946408A1 (en) 1999-10-06
DE69704121D1 (de) 2001-03-29
CA2265728A1 (en) 1998-04-23
WO1998016462A9 (en) 1999-04-01
DE69704121T2 (de) 2001-09-13
US5792441A (en) 1998-08-11
JP3413210B2 (ja) 2003-06-03
JP2000514398A (ja) 2000-10-31
WO1998016462A1 (en) 1998-04-23

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]
B25A Requested transfer of rights approved

Owner name: ECO-TEC LIMITED (CA) , FPINNOVATIONS (CA)

Free format text: TRANSFERIDO DE: PULP AND PAPER RESEARCH INSTITUTE OF CANADA

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 18A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2327 DE 11-08-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.