Patent ID: 8337674
Filing Date: 2012-12-25
Classification: B01D,C01B

Abstract:
1. A method of producing an ozone-containing gas comprising: (a) feeding a feed gas mixture from a feed gas line through a dielectric plasma ozone generator, the feed gas line being connected to an oxygen supply and a helium supply, the oxygen supply comprising at least 90% oxygen, (b) producing a generator effluent comprising ozone from the dielectric plasma ozone generator; (c) feeding the generator effluent through a first adsorber vessel containing an adsorbent having a greater adsorption affinity for ozone than for oxygen or helium and routing gas that exits the first adsorber vessel to a recovery line, the recovery line being in fluid communication with the feed gas line; (d) feeding a sweep gas through the first adsorber vessel and withdrawing from the first adsorber vessel a product gas comprising the sweep gas and ozone; and (f) feeding a rinse gas through the first adsorber vessel, the rinse gas consisting of gas from the oxygen supply that is delivered through a bypass line that is not connected to the helium supply and bypasses the dielectric plasma ozone generator; and (g) monitoring a nitrogen level in the recovery line using a nitrogen sensor.