摘要
本文报道一种治理工业烟道气中氮氧化物的新方法.利用黄磷与高温烟道气中的氧作用所生成的高活性的原子氧和臭氧作为氮氧化物清除剂.能有效地将烟道气中不溶于水的一氧化氮氧化为易溶于水的二氧化氮,后者进一步与烟道气中二氧化硫溶于水形成的亚硫酸盐生成氮硫化物而被除去.本文还对影响一氧化氮清除的有关因素进行了讨论。实验表明提高黄磷在水溶液中的分散程度,控制反应温度和溶液酸碱度,以及烟道气流速等是提高一氧化氮吸收率的关键。
A high efficency method for control of NO of flue gas by utilizing aqueous emulsions of yellow phosphorus developed.P_4 could react with O_2 to form O_3 which subseouently oxidized NO to NO_2 which dissolves in water to form nitrite and nitrate ions.whereas the P_4 consumsued was oxized to P_2O_5 that Picks up water to form H_3PO_4. The factors effecting NO removal efficiencies were discssed,the results show that the concentration of P_4,the PH of the aqueous emulsion and the tefmperature and so on will effect the NO removal.the stoichiometric ratio for NO removal by P_4 was measured,all the experments were performed in abench-scale system.
