添加剂对电晕放电烟气脱硝效率和NO_x转化影响

Effect of additives on NO_x removal and transformation by pulsed corona discharge

为提高脉冲流光电晕放电烟气脱硝效率，实验研究了丙烯和氨气注入对烟气脱硝效率和NO／NOx转化的影响．在能耗为7．5kj／m^3，丙烯和氨气分别按照与一氧化氮物质的量比为1注入的条件下：单独注入丙烯时，NO和NOx脱除率分别达到82％和22％，NO主要氧化生成NOx脱除；单独注入氨气，NO和NOx脱除率分别达到45％和37％，NOx的生成量较低；氨气和丙烯同时注入时，NO和NOx脱除率分别达到60％～76％和50％～60％，一氧化氮和氮氧化物的脱除率都得到提高，二氧化氮的生成得到抑制．园此为有效脱除NOx，烟气中同时注入丙烯以及易与NOx反应的添加剂是必要的．

For enhancement of NO/NOx removal by the pulsed streamer corona discharge, the effects of additives such as C3H6 and NH3 on NO/NOx removal and transformation were studied. In the experiments, under the conditions of the energy consumption of 7.50 kJ/m^3 and C3H6 ＆ NH3 injected into flue gas with the same molecule dose of NO, NO and NOx removal rate reached 82% and 22% respectively when only C3H6 was injected into flue gas, and NO was removed mainly by conversion to NO2. When only NH3 was injected into flue gas, NO and NOx removal rate reached 45% and 37% respectively, and NO2 production quantity was low. When both C3H6 and NH3 were injected into flue gas, NO and NOx removal rate reached 60%-76% and 50%-60% respectively, NO and NOx removal rate increased, and NO2 production was restrained. So simultaneous injection of C3H6 and additives reacting easily with NO2 was required for effective removal of NOx.