湿空气作为自由基源物质脱除烟气中的NO_x

Removal of NO_x from flue gases by moist air as radical source

以湿空气为自由基源物质,通过直流电晕放电自由基簇射,结合化学吸收脱除烟气中的NOx,比较了湿空气和湿氧气两种自由基源物质条件下的NOx脱除效果.结果表明,以湿空气为自由基源物质时的NOx脱除效率比湿氧气低.实验条件下,湿空气时,反应器NOx脱除效率为45.5%,经25%NaOH溶液吸收后系统总效率为68.6%;湿氧气时,反应器NOx脱除效率为71.5%,经25%NaOH溶液吸收后系统总效率为90.9%.

The NOx removal from flue gases using a DC corona discharge activated radical shower with moist air as radical source, combined with chemical absorption, the NOx removal effect under condition of two radical sources (moist air and moist oxygen) was compared. The efficiency of NOx removal with moist air as radical source was lower than that with moist oxygen. Under experimental conditions, NOx removal efficiency of the reactor was 45.5% with moist air, and after the absorption of (25% NaOH) the overall removal efficiency of the system was 68.6%; and they were 71.5% and 90.9% respectively with moist oxygen.