| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust gas treatment method and an exhaust gas treatment apparatus which can efficiently remove NOx in exhaust gas.SOLUTION: An exhaust gas treatment method includes a process of: supplying powder containing an alkali agent, and ozone in exhaust gas containing NOx; and treating the exhaust gas. The exhaust gas treatment method oxidizes NO into NOby the ozone, and the alkali agent or its thermally decomposed product and the NOare subjected to gas-solid reaction. The exhaust gas treatment apparatus is provided with an exhaust gas flow channel in which the exhaust gas containing NOx flows, an ozone supply part which supplies ozone in the exhaust gas flowing in the exhaust gas flow channel, and an alkali agent supply part which supplies the powder containing the alkali agent in the exhaust gas flowing in the exhaust gas flow channel. The ozone supply part is arranged so as to oxidize the NO in the exhaust gas into the NOby the supplied ozone. The alkali agent supply part is arranged so that the alkali agent contained in the supplied powder or its thermally decomposed product and the NOare subjected to gas-solid reaction.SELECTED DRAWING: Figure 1 |
