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BRPI0402926A - Process for Manufacturing Alkali Chlorite Solutions with Very Low Impurity - Google Patents

Process for Manufacturing Alkali Chlorite Solutions with Very Low Impurity

Info

Publication number
BRPI0402926A
BRPI0402926A BRPI0402926A BRPI0402926A BR PI0402926 A BRPI0402926 A BR PI0402926A BR PI0402926 A BRPI0402926 A BR PI0402926A BR PI0402926 A BRPI0402926 A BR PI0402926A
Authority
BR
Brazil
Prior art keywords
low impurity
metal chlorite
exhaust gas
chlorine dioxide
alkali metal
Prior art date
Application number
Other languages
Portuguese (pt)
Inventor
Mario Luis Costa
Gerald Cowley
Chunmin Pu
Original Assignee
Superior Plus Inc
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 Superior Plus Inc filed Critical Superior Plus Inc
Publication of BRPI0402926A publication Critical patent/BRPI0402926A/en
Publication of BRPI0402926B1 publication Critical patent/BRPI0402926B1/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00Oxides or oxyacids of halogens; Salts thereof
    • C01B11/08Chlorous acid
    • C01B11/10Chlorites
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00Oxides or oxyacids of halogens; Salts thereof
    • C01B11/02Oxides of chlorine
    • C01B11/022Chlorine dioxide (ClO2)
    • C01B11/023Preparation from chlorites or chlorates
    • C01B11/025Preparation from chlorites or chlorates from chlorates without any other reaction reducing agent than chloride ions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treating Waste Gases (AREA)

Abstract

"PROCESSO PARA FABRICAçãO DE SOLUçõES DE CLORITO DE METAIS ALCALINOS COM NìVEL MUITO BAIXO DE IMPUREZAS". é produzido clorito de metal alcalino, especialmente clorito de sódio, com um nível de pureza superior àquele que é esperado com base na composição do gás de exaustão de gerador de dióxido de cloro que é usado matéria-prima de alimentação para a fabricação de cloritos. O gás de exaustão é, de preferência, extraído antes de entrar na torre de absorção de dióxido de cloro e é passado através de uma etapa de condicionamento para em seguida reagir em um meio líquido para produzir uma solução de clorito de metal alcalino a partir da qual os gases não-reagidos e produzidos são imediatamente separados."PROCESS FOR MANUFACTURING ALKALINE METAL CHLORITE SOLUTIONS WITH VERY LOW IMPURITY". Alkali metal chlorite, especially sodium chlorite, is produced with a higher purity level than expected based on the composition of the chlorine dioxide generator exhaust gas which is used as feed material for the manufacture of chlorites. The exhaust gas is preferably extracted before entering the chlorine dioxide absorption tower and is passed through a conditioning step and then reacted in a liquid medium to produce an alkali metal chlorite solution from the which unreacted and produced gases are immediately separated.

BRPI0402926A 2003-05-13 2004-05-13 method to produce higher purity alkali metal chlorite BRPI0402926B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2428731 CA2428731A1 (en) 2003-05-13 2003-05-13 Chlorine dioxide from a methanol-based generating system as a chemical feed in alkali metal chlorite manufacture

Publications (2)

Publication Number Publication Date
BRPI0402926A true BRPI0402926A (en) 2005-05-24
BRPI0402926B1 BRPI0402926B1 (en) 2017-05-09

Family

ID=33426241

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0402926A BRPI0402926B1 (en) 2003-05-13 2004-05-13 method to produce higher purity alkali metal chlorite

Country Status (4)

Country Link
CN (1) CN100344530C (en)
BR (1) BRPI0402926B1 (en)
CA (1) CA2428731A1 (en)
TW (1) TWI359791B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UY32927A (en) * 2009-10-12 2011-03-31 Akzo Nobel Chemicals Int Bv PROCESS FOR THE PRODUCTION OF CHLORINE DIOXIDE
CN104106596A (en) * 2013-04-22 2014-10-22 吕世鹏 Process and device for preparing stable high-concentration sterilization disinfection preparation
CN107117610A (en) * 2017-06-29 2017-09-01 广西师范大学 A kind of apparatus and method for removing residual acid solution

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5597544A (en) * 1995-11-29 1997-01-28 Rio Linda Chemical Co., Inc. Preparation of chlorite
CA2273667C (en) * 1998-06-09 2009-03-17 Sterling Canada, Inc. High purity alkali metal chlorite and method of manufacture
CN1151058C (en) * 2002-05-20 2004-05-26 华南理工大学 Process for preparing sodium chlorite

Also Published As

Publication number Publication date
CN100344530C (en) 2007-10-24
CA2428731A1 (en) 2004-11-13
CN1572722A (en) 2005-02-02
BRPI0402926B1 (en) 2017-05-09
TWI359791B (en) 2012-03-11
TW200508152A (en) 2005-03-01

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O(S) ARTIGO(S) DA LPI

B12B Appeal against refusal [chapter 12.2 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]
B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 20A 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 2775 DE 12-03-2024 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.