Trend of NOx Regulation and Reduction Technologies in Waste Incinerator

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  • 廃棄物焼却炉におけるNOx排出規制動向と脱硝技術
  • ハイキブツ ショウキャクロ ニ オケル NOx ハイシュツ キセイ ドウコウ ト ダッショウ ギジュツ

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<p>Nitrogen oxides (NOx) from waste incinerator is one of the typical regulated toxic substances. In Europe and America, the emission control based on BAT (Best Available Techniques) which is unfamiliar in Japan is also adopted to strengthen NOx regulation. It is expected that the regulation of NOx from waste incinerator is becoming strict more and more in future. By the way, the emission of NOx can be reduced by two type technologies. The first technology is to prevent NOx production by well controlled combustion, and the other is to reduce NOx by flue gas treatment technology like SNCR (selective non-catalytic reduction process) and SCR (selective catalytic reduction process). In this paper, the trend of NOx regulation and emission control technologies adopted in waste incinerators are introduced. First, NOx regulation values in Japan and foreign countries are surveyed, and details of NOx control technologies actually used in our plants are explained together with our study results.</p>

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