液相催化氧化净化烟气中SO_2和NO_x的实验研究

An experimental study on reducing SO_2/NO_x of flue gas by aqueous catalytic oxidation

采用Fe^2＋，Mn^2＋，Zn^2＋，Al^3＋4种金属离子进行了催化氧化SO2和NO废气的实验．对循环吸收液的酸度、催化剂浓度最佳配比及操作条件的改变等对SO2和NO催化氧化效率的影响及其变化规律进行了研究．结果表明，当Fe^2＋，Mn^2＋，Zn^2＋，Al^3＋质量分数分别为0．5％，0．2％，0．5％，1．0％，气体流量为0．1m^3／h；循环液流量为6～8L／h时，SO2和NO催化氧化效率分别为95％和50％以上．

The experiment of aqueous catalytic oxidation SCh/NO of flue gas was carried out by using catalysts of Fe^2＋, Mn^2＋, Zn^2＋ and A;^3＋ . The influence and the varying law of acid concentration of absorbing solution, the optimum concentration of catalyst, operation conditions on the efficiency of catalytic oxidation SO2/ NO were studied. Re.arch showed that when the concentration of Fe^2＋, Mn^2＋, Zn^2＋, Al^3＋ were 0.5 %, 0. 2%, 0.5%, 1.0% respectively, the gas flow was 0.1 m^3/h, circulated liquid flow was 6-8 L/h, the efficiency of catalytic oxidation SO2/NO can be achieved above 95% and 50% respectively by this method.