초록 |
The emission of NOx from combustion of coals and other nitrogen containg fuels remains a problem of considerable interest due to the contribution of these pollutants to rain acidification, global warming and the depletion of the statospheric ozone layer. This interest has led to a vast research work about NOx reduction. In order to treatment of NOx, we were investigated to adsorption capacity using specific chemical impregnted adsorbent with the well developed pore and high surface area. For selective adsorption method, some advanced nation is commcialized, but spreaded effect is not larger than other technique in NOx removal efficiency yet. Especially, volatile organic carbon well eliminated to general activated carbon by physisorption but we're expect for maximized adsorptivity treating NOx, SOx, halogen compounds, dioxin and odor only adding to chemical activity or special selective sites. Relatively, in case of NOx is known by the most exhausted amout and difficult to control of harmful gas. In the present widly used SCR utility for treatment of NOx was good for NOx removal efficiency but smaller temperature range, economic and catalytic deactivation caused by catalyst poisoning. Especially SCR cannot be applied to NOx such as fuel gas that has low concentration level. Progressing to continous research about the other method. The adsorption method was known to the most efficient process possible for operating or substitued from SCR following technical result. As compared with table 1, adsorption method has significant merit from operating condition, cost and utility etc. The purpose of this study was, through a breakthrough experiment by use of fixed bed adsorption column, to examine selective adsorption characteristics of NOx. |