| 摘要 |
An exhaust gas processing method and an exhaust gas processing system for controlling the spatial density distribution of particulate matter in exhaust gas by utilizing corona discharge in exhaust gas containing floating particulate matter such as diesel engine exhaust gas to form a relatively particulate matter-rich area and a relatively particulate matter-lean area, and diving exhaust gas particulates to the former and the latter. An exhaust gas processing system ( 10 ) provided with a high-voltage electrode ( 12 ) and a low-voltage electrode ( 11 ), wherein exhaust gas G is allowed to flow between the facing high-voltage electrode ( 12 ) and low-voltage electrode ( 11 ), and a high voltage is applied to between the counter electrodes to generate corona discharge in the exhaust gas G, whereby floating particulate matter ( 20 ) in the exhaust gas G is charged, the spatial density distribution of the floating particulate matter in the exhaust gas is controlled by an electrostatic force between the counter electrodes, and the exhaust gas G is divided into a high-concentration exhaust gas Gb in the vicinity of the low-voltage electrode where a particulate matter concentration is relatively high and a low-concentration exhaust gas Ga in the vicinity of the high-voltage electrode where a particulate matter concentration is relatively low.
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