Device for producing an aqueous chlorine dioxide solution

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 61/36 (2006.01) A61L 2/18 (2006.01) B01J 7/02 (2006.01) C01B 11/02 (2006.01) C02F 1/76 (2006.01)

Patent

CA 2415254

A device (20) for producing an aqueous chlorine dioxine solution when placed in water. The device includes a membrane shell (22) that defines a compartment (30) which includes one or more dry chemicals (e.g., a metal chlorite (32) and an acid)(34) capable of producing chlorine dioxide gas when exposed to water. Wick means extend into the compartment (30)for absorbing water and transporting water into the compartment (30) such that the chemical(s) in the compartment (30) dissolve in the water and produce chlorine dioxide. In one embodiment, the membrane shell (22) is formed of a material that allows the passage of gas (e.g., chlorine dioxide) but is impervious to liquid. In another embodiment, the wick means is a wick member (22) which divides the compartment (30) into first and second compartment sections. One chemical is contained within the first compartment section and another chemical is contained within the second compartment section. When the device (20) is placed in water, water enters the device (20) by way of the wick means. The chemicals dissolve in the water and react to produce chlorine dioxide gas. The chlorine dioxide gas then passes through the membrane shell (22) into the surrounding water transforming the water into an aqueous chlorine dioxide solution.

L'invention concerne un dispositif (20) qui, lorsqu'il est placée dans l'eau, permet d'obtenir une solution aqueuse de dioxyde de chlore. Ce dispositif comprend une enveloppe de membrane (22) définissant un compartiment (30) renfermant une ou plusieurs substances chimiques sèches (un chlorite métallique (32) et un acide (34), par exemple) capables de produire du dioxyde de chlore gazeux lorsqu'elles sont exposées à l'eau. Le dispositif comprend également une mèche située dans le compartiment (30) et destinée à absorber l'eau et à la transporter dans le compartiment (30), de façon que les substances chimiques situées dans le compartiment (30) se dissolvent dans l'eau et produisent du dioxyde de chlore. Dans un mode de réalisation, l'enveloppe de membrane (22) est formée à partir d'un matériau perméable au gaz mais imperméable au liquide. Dans un autre mode de réalisation, la mèche (22) divise le compartiment (30) en deux sections. L'une des sections du compartiment renferme une substance chimique et l'autre section renferme une autre substance chimique. Lorsque le dispositif (20) est placé dans l'eau, l'eau entre dans le dispositif (20) par l'intermédiaire de la mèche. Les substances chimiques se dissolvent dans l'eau et donnent lieu à une réaction permettant d'obtenir du dioxyde de chlore gazeux. Le dioxyde de chlore gazeux passe alors à travers l'enveloppe de membrane (22), dans l'eau environnante, transformant l'eau en solution aqueuse de dioxyde de chlore.

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