Ozone decomposition and electrodesorption process
AssigneeW. R. Grace & Co.
InventorFrank Eugene Lowther
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Abstract
An ozone decomposition system wherein moist ozone-containing gas is contacted with a bed of active zeolite molecular sieve particles for converting ozone, which comprises means for reactivating the bed by directly applying to the zeolite particles a high-voltage low-frequency electrical field having sufficient potential gradient to separate sorbed moisture as molecular water.
Claims12
A method for decomposing ozone which comprises:
- (a) contacting a gas mixture which includes ozone and water vapor with a bed of crystalline alumino-silicate zeolite, said zeolite being active for the decomposition of ozone;
- and
- (b) maintaining the activity of said zeolite bed by the application of a 0-10.sup.3 Hz electrical field of at least 0.2 Kv/cm across the bed to maintain a current density of about 0.01 to 100 microamps/cm.sup.2 to remove water from said bed as molecular water.
In an improved method for decomposing ozone mixed with a moisture containing gas stream wherein the stream is contacted with a crystalline aluminosilicate zeolite which is active for the decomposition of ozone, the improvement comprising maintaining the ozone decomposition activity of the zeolite by the application of a 0-10.sup.3 Hz electrical field of at least 0.2 Kv/cm across the zeolite to maintain a current density of about 0.01 to 100 microamps/cm.sup.2, whereby water is removed from said zeolite substantially as molecular water.
Dependencies are inferred from the claim text.