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US 12,281,009 B2Granted
Method and apparatus for generating chlorine dioxide
AssigneeScotmas Group Limited
InventorsAlistair Peter Cameron, Nicola Louise Palmer, Thomas James Livesey
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Abstract
There is disclosed a method of forming chlorine dioxide comprising passing chlorous acid through a membrane including a catalyst suitable to catalyse the formation of chlorine dioxide from chlorous acid. There is also disclosed a membrane suitable for forming an aqueous solution of chlorine dioxide comprising a catalyst suitable to catalyse the formation of chlorine dioxide from chlorous acid or alkali metal chlorite.
Claims12
A method of forming chlorine dioxide comprising:
- providing a hydrophobic microporous membrane having a first face, a second face and a wall thickness extending between the first face and the second face, the membrane comprising a catalyst for catalysing the formation of chlorine dioxide from chlorous acid, wherein the catalyst is provided within the 50% of the wall thickness at or towards the first face, and wherein only a negligible amount of the catalyst is provided within the 30% of the wall thickness at or towards the second face;
- feeding an aqueous solution of chlorous acid to the first face of the hydrophobic microporous membrane;
- wherein the chlorous acid contacts the catalyst and oxidises to chlorine dioxide;
- wherein chlorine dioxide in gaseous form passes through the hydrophobic microporous membrane to the second face thereof wherein the second face is in fluid communication with an outlet for providing the chlorine dioxide formed.
1 more element
Dependencies are inferred from the claim text.