ES2051667T1 - Procedimiento para la produccion de hidroxidos de metal alcalino y azufre elemental a partir de sales de metales alcalinos que contienen azufre. - Google Patents

Procedimiento para la produccion de hidroxidos de metal alcalino y azufre elemental a partir de sales de metales alcalinos que contienen azufre.

Info

Publication number
ES2051667T1
ES2051667T1 ES93202380T ES93202380T ES2051667T1 ES 2051667 T1 ES2051667 T1 ES 2051667T1 ES 93202380 T ES93202380 T ES 93202380T ES 93202380 T ES93202380 T ES 93202380T ES 2051667 T1 ES2051667 T1 ES 2051667T1
Authority
ES
Spain
Prior art keywords
elemental sulfur
production
metal hydroxides
alkaline
sulfur
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.)
Pending
Application number
ES93202380T
Other languages
English (en)
Inventor
Gianni Zoppi
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.)
Ecochem AG
Original Assignee
Ecochem AG
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 Ecochem AG filed Critical Ecochem AG
Publication of ES2051667T1 publication Critical patent/ES2051667T1/es
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • 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
    • C01B17/22—Alkali metal sulfides or polysulfides
    • 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
    • C01B17/22—Alkali metal sulfides or polysulfides
    • C01B17/24—Preparation by reduction
    • C01B17/26—Preparation by reduction with carbon
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/14—Alkali metal compounds
    • C25B1/16—Hydroxides

Abstract

LA INVENCION SE REFIERE A UN PROCESO PARA LA PRODUCCION DE HIDROXIDOS DE METAL ALCALI, TALES COMO SODA CAUSTICA Y AZUFRE ELEMENTAL, QUE SE CARACTERIZA EN QUE SE SUMINISTRA A UNA PILA ELECTROQUIMICA UNA SOLUCION DE SULFURO DE METAL ALCALI, POR EJEMPLO SULFURO DE SODIO, PARA PROVOCAR QUE TENGAN LUGAR LAS SIGUIENTES REACCIONES: EL CATODO 2H2O + 2ESIENDO COMO SIGUE: NA2S + 2H2O ---> 2NAOH + S + H2. EL AZUFRE ELEMENTAL, QUE ES INSOLUBLE, SE RECUPERA A PARTIR DE LA SOLUCION ANODICA MEDIANTE FILTRACION. LA SOLUCION NAOH SE EXTRAE DEL COMPARTIMENTO CATODICO POR MEDIO DE LA ADICION DE AGUA. LA CONCENTRACION DE LA SOLUCION DE HIDROXIDO DE METAL ALCALI OBTENIDA ES FUNCION DE LAS CARACTERISTICAS DE LA MEMBRANA UTILIZADA. EN EL PROCESO PRESENTADO, EL POTENCIAL COMUN DE LA REACCION ANODICA: S2 ONDIENTES QUE SE DIRIGEN AL DESARROLLO DE GASES (CL2, O2), MEDIANTE LO CUAL SE HACE POSIBLE UNA DISMINUCION EN EL VOLTAJE DE LA PILA.
ES93202380T 1992-08-25 1993-08-13 Procedimiento para la produccion de hidroxidos de metal alcalino y azufre elemental a partir de sales de metales alcalinos que contienen azufre. Pending ES2051667T1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH262792 1992-08-25

Publications (1)

Publication Number Publication Date
ES2051667T1 true ES2051667T1 (es) 1994-07-01

Family

ID=4238018

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93202380T Pending ES2051667T1 (es) 1992-08-25 1993-08-13 Procedimiento para la produccion de hidroxidos de metal alcalino y azufre elemental a partir de sales de metales alcalinos que contienen azufre.

Country Status (6)

Country Link
US (1) US5391267A (es)
EP (1) EP0589501A3 (es)
JP (1) JPH06207290A (es)
CA (1) CA2104746A1 (es)
DE (1) DE589501T1 (es)
ES (1) ES2051667T1 (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5653861A (en) * 1995-04-06 1997-08-05 Eka Nobel Ab Electrochemical process
US6132590A (en) * 1998-01-09 2000-10-17 Huron Tech Corp Electrolytic process for treating aqueous waste streams
US6214733B1 (en) 1999-11-17 2001-04-10 Elo Technologies, Inc. Process for lift off and handling of thin film materials
US20060110559A1 (en) * 2004-10-05 2006-05-25 Victor Nasreddine Crosslinking of carboxylated nitrile polymers with organo functional silanes: a curable plasticizer composition
JP4922713B2 (ja) * 2006-09-25 2012-04-25 兵治 榎本 水素の製造方法
WO2009070593A1 (en) * 2007-11-27 2009-06-04 Ceramatec, Inc. Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides
US8728295B2 (en) * 2008-10-09 2014-05-20 Ceramatec, Inc. Apparatus and method for reducing an alkali metal electrochemically at a temperature below the metal's melting temperature
US9475998B2 (en) 2008-10-09 2016-10-25 Ceramatec, Inc. Process for recovering alkali metals and sulfur from alkali metal sulfides and polysulfides
CA2860419C (en) * 2011-01-12 2020-12-15 Ceramatec, Inc. Electrochemical production of hydrogen
US8764965B2 (en) 2011-01-27 2014-07-01 Ceramatec,Inc. Electrochemical conversion of alkali sulfate into useful chemical products
US10538847B2 (en) 2015-12-29 2020-01-21 Enlighten Innovations Inc. Method and apparatus for recovering metals and sulfur from feed streams containing metal sulfides and polysulfides
CN109069989B (zh) * 2015-12-29 2021-07-27 因莱坦恩创新公司 用于从含有金属硫化物和多硫化物的进给流中回收金属和硫的方法和设备
CN106082140A (zh) * 2016-08-23 2016-11-09 广西联壮科技股份有限公司 多层高效的硫化钠除杂装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151053A (en) * 1975-07-09 1979-04-24 Asahi Kasei Kogyo Kabushiki Kaisha Cation exchange membrane preparation and use thereof
US4519881A (en) * 1984-06-25 1985-05-28 Standard Oil Company (Indiana) Regeneration of alkaline treating agents
US5019227A (en) * 1989-11-09 1991-05-28 The Texas A&M University System Electrochemical method for producing hydrogen and sulfur

Also Published As

Publication number Publication date
JPH06207290A (ja) 1994-07-26
US5391267A (en) 1995-02-21
DE589501T1 (de) 1994-11-03
CA2104746A1 (en) 1994-02-26
EP0589501A3 (en) 1994-05-18
EP0589501A2 (en) 1994-03-30

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