Patent ID: 9504961
Filing Date: 2016-11-29
CPC Classification: B01D,C01B,C25B,F01N,Y02T

Claim Text:
1. An exhaust purifying system comprising: a selective reduction catalyst provided on an exhaust passage of an engine; a fluid supply device configured to supply a urea fluid to a section of the exhaust passage that is upstream of the selective reduction catalyst; a gas separator for separating source gas into oxygen-enriched gas and nitrogen-enriched gas; an ozone generator that includes an ozone producing space, to which the oxygen-enriched gas is introduced, and produces ozone from the introduced oxygen-enriched gas; an ozone supplier for supplying ozone to a section of the exhaust passage that is upstream of the selective reduction catalyst; a vortex tube for separating the nitrogen-enriched gas into cool air and warm air and discharging the cool air and the warm air; and a cooling device configured to cool the ozone producing space by applying the cool air discharged from the vortex tube to the ozone generator, wherein the vortex tube is a first vortex tube, and the system further comprises a second vortex tube for separating the oxygen-enriched gas into cool air and warm air and discharging the cool air and the warm air separately, and the cool air discharged from the second vortex tube is introduced to the ozone generator to produce ozone from the oxygen-enriched gas at a low temperature.