| 摘要 |
<p>PURPOSE:To provide a dry method for treating the exhaust combustion gas emitted from an incinerator wherein the nitrogen oxide (hereinafter referred to as NOx) and trace harmful substance contained in the exhaust gas from the incinerator are effectively decomposed and adsorbed for removal. CONSTITUTION:A dry method for treating the exhaust combustion gas emitted from an incinerator 1 is characterized by sending the exhaust gas emitted from an incinerator into a dust collector 2, spraying NH3 against the exhaust gas which has passed through the dust collector 2, introducing the exhaust gas into a column 4 packed with active coke, and conducting a reductive denitration of NOx by the catalytic action of the active coke for denitration and removing the trace substance by the adsorptive action of the active coke. The active coke indicates its catalytic activity as a denitration catalyst at a temp. (about 150 deg.C) lower than the conventional catalyst of metal oxide. Therefore, the active coke can conduct the denitration with a sufficiently high degree of efficiency, even if it is located downstream EP or a bag filter. Acting also as an adsorbing agent, the active coke can adsorb and remove the trace harmful substances such as Hg, dioxins and chlorobenzenes which have hitherto been allowed to be discharged out of the system.</p> |
