Electrolytic cell and method for electrolysis

Details Electrolytic cell and method for electrolysis Electrolytic cell and method for electrolysis

C - Chemistry, Metallurgy

25

B

C25B 9/00 (2006.01) C25B 1/26 (2006.01) C25B 9/08 (2006.01) C25B 9/16 (2006.01)

Patent

CA 2405570

An electrolytic cell is provided for producing a sodium hypochlorite solution with active chlorine from brine. A plurality of the cells are typically employed with provision for cooling the electrolyte. The cell comprises a cylindrical metallic cathode with a smaller cylindrical metallic anode disposed within the cathode to define an annular passage through which the electrolyte passes. In preferred embodiments, the annular passage can contain particulate material such as carbon to enhance surface contact, and an anionic membrane can be provided between the anode and cathode to divide the annular passage into two chambers.

L'invention concerne une cellule d'électrolyse destinée à la production d'une solution d'hypochlorite de sodium contenant du chlore actif à partir d'une saumure. On utilise normalement plusieurs de ces cellules en tenant compte du refroidissement de l'électrolyte. La cellule comprend une cathode métallique cylindrique et une anode métallique cylindrique de plus petite taille disposée à l'intérieur de la cathode afin de définir un passage annulaire au travers duquel passe l'électrolyte. Dans des réalisations préférées, le passage annulaire peut contenir un matériau particulaire, tel que du carbone, afin d'améliorer le contact de surface, ainsi qu'une membrane anionique entre l'anode et la cathode permettant de diviser le passage annulaire en deux chambres.

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