METHOD FOR CONVERTING BRINES INTO ACIDS AND BASES, AND PRODUCTS OBTAINED
The invention relates to a method for treating brines, which includes the steps of: subjecting a stream of brines (4, 13) to a pretreatment (5, 14) by means of membrane separation (15) designed such as to obtain a stream of brines that are substantially free of divalent ions (7, 16) and a residual s...
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23.01.2014
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Abstract | The invention relates to a method for treating brines, which includes the steps of: subjecting a stream of brines (4, 13) to a pretreatment (5, 14) by means of membrane separation (15) designed such as to obtain a stream of brines that are substantially free of divalent ions (7, 16) and a residual stream which includes an electrolytic solution (6, 17); subjecting the stream of brines (7, 16) obtained in the preceding step to a treatment (8, 18) by means of electrodialysis using bipolar membranes designed such as to obtain a stream of hydrochloric acid (9, 28) and a stream of sodium hydroxide (10, 29), as well as a stream of desalinated water (30). The invention also relates to a hydrochloric acid solution obtained by means of the preceding method. The invention also relates to a sodium hydroxide solution obtained by means of the preceding method.
Un proceso de tratamiento de salmueras que comprende las etapas de: someter una corriente de salmueras (4, 13) a un pretratamiento (5, 14) mediante separación por membranas (15) diseñado para obtener una corriente de salmueras sustancialmente libre de iones divalentes (7, 16) y una corriente residual que comprende una disolución electrolítica (6,17); someter la corriente de salmueras (7, 16) obtenida en la etapa anterior a un tratamiento (8, 18) mediante electrodiálisis con membranas bipolares diseñado para obtener una corriente de ácido clorhídrico (9, 28) y una corriente de hidróxido sódico (10, 29), además de una corriente de agua desalinizada (30). Una disolución de ácido clorhídrico obtenida mediante el proceso anterior. Una disolución de hidróxido sódico obtenida mediante el proceso anterior.
L'invention concerne un procédé de traitement de saumures qui comprend les étapes consistant: à soumettre un courant de saumures (4, 13) à un prétraitement (5, 14) par séparation par membranes (15) conçu pour obtenir un courant de saumures sensiblement dépourvu d'ions divalents (7, 16) et un courant résiduel qui comprend une dissolution électrolytique (6, 17); à soumettre le courant de saumures (7, 16) obtenu lors de l'étape antérieure à un traitement (8, 18) par électrodialyse à l'aide de membranes bipolaires conçue pour obtenir un courant d'acide chlorhydrique (9, 28) et un courant d'hydroxyde sodique (10, 29), en plus d'un courant d'eau désalinisée (30). L'invention concerne également une dissolution d'acide chlorhydrique obtenue à l'aide du procédé antérieur. L'invention concerne enfin une dissolution d'hydroxyde sodique obtenue à l'aide du procédé antérieur. |
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AbstractList | The invention relates to a method for treating brines, which includes the steps of: subjecting a stream of brines (4, 13) to a pretreatment (5, 14) by means of membrane separation (15) designed such as to obtain a stream of brines that are substantially free of divalent ions (7, 16) and a residual stream which includes an electrolytic solution (6, 17); subjecting the stream of brines (7, 16) obtained in the preceding step to a treatment (8, 18) by means of electrodialysis using bipolar membranes designed such as to obtain a stream of hydrochloric acid (9, 28) and a stream of sodium hydroxide (10, 29), as well as a stream of desalinated water (30). The invention also relates to a hydrochloric acid solution obtained by means of the preceding method. The invention also relates to a sodium hydroxide solution obtained by means of the preceding method.
Un proceso de tratamiento de salmueras que comprende las etapas de: someter una corriente de salmueras (4, 13) a un pretratamiento (5, 14) mediante separación por membranas (15) diseñado para obtener una corriente de salmueras sustancialmente libre de iones divalentes (7, 16) y una corriente residual que comprende una disolución electrolítica (6,17); someter la corriente de salmueras (7, 16) obtenida en la etapa anterior a un tratamiento (8, 18) mediante electrodiálisis con membranas bipolares diseñado para obtener una corriente de ácido clorhídrico (9, 28) y una corriente de hidróxido sódico (10, 29), además de una corriente de agua desalinizada (30). Una disolución de ácido clorhídrico obtenida mediante el proceso anterior. Una disolución de hidróxido sódico obtenida mediante el proceso anterior.
L'invention concerne un procédé de traitement de saumures qui comprend les étapes consistant: à soumettre un courant de saumures (4, 13) à un prétraitement (5, 14) par séparation par membranes (15) conçu pour obtenir un courant de saumures sensiblement dépourvu d'ions divalents (7, 16) et un courant résiduel qui comprend une dissolution électrolytique (6, 17); à soumettre le courant de saumures (7, 16) obtenu lors de l'étape antérieure à un traitement (8, 18) par électrodialyse à l'aide de membranes bipolaires conçue pour obtenir un courant d'acide chlorhydrique (9, 28) et un courant d'hydroxyde sodique (10, 29), en plus d'un courant d'eau désalinisée (30). L'invention concerne également une dissolution d'acide chlorhydrique obtenue à l'aide du procédé antérieur. L'invention concerne enfin une dissolution d'hydroxyde sodique obtenue à l'aide du procédé antérieur. |
Author | IBANEZ MENDIZABAL, RAQUEL PEREZ GONZALEZ, ANTIA URTIAGA MENDIA, ANA MARIA ORTIZ URIBE, INMACULADA |
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DocumentTitleAlternate | PROCÉDÉ DE CONVERSION DE SAUMURES EN ACIDES ET BASES ET PRODUITS OBTENUS PROCESO DE CONVERSIÓN DE SALMUERAS EN ÁCIDOS Y BASES Y PRODUCTOS OBTENIDOS |
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Snippet | The invention relates to a method for treating brines, which includes the steps of: subjecting a stream of brines (4, 13) to a pretreatment (5, 14) by means of... |
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SubjectTerms | CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
Title | METHOD FOR CONVERTING BRINES INTO ACIDS AND BASES, AND PRODUCTS OBTAINED |
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