Simultaneous removal of NO and SO_2 from dry gas stream using non-thermal plasma

摘要

In order to investigate the feasibility of sequential removal NO and SO_2 using non-thermal plasma and adsorbent simultaneously, the removal of NO and SO_2 from dry gas stream (NO/SO_2/N_2/O_2) with very little O_2 using non-thermal plasma was investigated using a coaxial dielectric barrier discharge. Comparative experiments were carried out in the dry gas stream with and without Ar respectively at O_2 concentration of 0.1%. The results showed that NO could be removed remarkably and it would be enhanced in the presence of Ar in the dry gas stream. It seems that SO_2 could not be removed unless there is Ar in the dry gas stream. The mechanism of removal of NO and SO_2 in the dry gas stream was discussed.