Hydrophilic anode corrosion control system

C - Chemistry – Metallurgy – 23 – F

Patent

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Details

C23F 13/00 (2006.01) C23F 13/16 (2006.01)

Patent

CA 2206428

A method and apparatus for reducing corrosion on the interior and exterior of a fuel storage tank (10). A galvanic anode assembly (14) is placed within the interior of the fuel storage tank and is surrounded by a layer of hydrophilic gel (38). The hydrophilic gel absorbs water in the fuel storage tank, thus removing it from contact with the tank. The hydrophilic gel also absorbs metal ions produced as the anode is consumed. The hydrophilic gel is maintained around the anode assembly by a porous container (40). The anode, hydrophilic gel, and porous container are maintained within a flexible container (28) that allows water and fluid contained within the fuel storage tank to contact the hydrophilic gel. In one embodiment, the hydrophilic gel includes a polyacrylamide material.

La présente invention concerne un procédé et un dispositif permettant de réduire la corrosion à l'intérieur et à l'extérieur d'un réservoir de stockage de combustible (10). Un ensemble galvanique anodique (14), disposé à l'intérieur du réservoir de stockage de combustible, est entouré d'une couche de gel hydrophile (38). Ce gel hydrophile absorbant l'eau du réservoir de stockage de combustible, l'eau ne se trouve plus en contact avec le réservoir. Le gel hydrophile absorbe également les ions métal se dégageant au fur et à mesure de l'usure de l'anode. Un réservoir poreux (40) assure le maintien du gel hydrophile autour de l'ensemble anodique. L'anode, le gel hydrophile, ainsi que le réservoir poreux, sont contenus dans une enceinte flexible (28) permettant à l'eau ainsi qu'au fluide contenus à l'intérieur du réservoir de stockage de combustible d'entrer en contact avec le gel hydrophile. Selon une réalisation, le gel hydrophile contient une matière de type polyacrylamide.

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