Adsorbent/catalyst is a cheap and effective material to remove nitrogen oxides (NOx) from flue gas. Experimental study was carried out to remove NOx using particulate activated carbon(PAC, 300 mesh) impregnated with alumina, manganese. Prior to the injection tests, the catalyst was activated in-situ by passing oxygen for 2 hrs at 500℃. Tests of the process removing NO by ozone were performed in parts of the real scale (50 t/d) solid waste incinerator. An ozone generator was used to produce ozone from gaseous oxygen. Ozone was injected into the flue gas stream with impregnated PAC to oxidize NO which is the main component of NOx. The NO is oxidized to NO₂ by 0₃ injection, which is highly removable and can be easily removed by the adsorbent/catalyst. The results showed that removal efficiency of adsorbent/ catalyst with process of ozone injection is more effective for NOx removal. The results showed that NO removal efficiency are from 100% (~ 6 min) to 55% (~ 15 min) at 30 ppm (0₃ concentration) in real incineration plant. As a result, it was shown that ozone is contributed to NO removal.
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