Abstract
The flue gas multi-pollutants simultaneous removal is an inevitable trend in the field of flue gas purification. In our researches, the AC technology, the multi-stage humidifier semi-dry technology, the CRS plasma technology and the additive oxidization technology were investigated. The V_2O_5/AC is highly active for the SCR reaction at low temperature. NO_x conversion increased with increasing NO_2/NOR ratio and the catalyst can achieved the highest activity at a temperature as low as 150℃. The semi-dry flue gas cleaning technology can achieve high multi-pollutants removal efficiency through the multistage humidification and the improving additives. The removal efficiencies of SO_2, NO_x and Hg can reach 95%, 41% and 73% respectively in the practice project. The alkali solution absorption basing on the CRS oxidization can achieve high deSO_2 and deNO_x removal efficiencies. In addition, the additive oxidation technology using NaClO_2 can obtain the removal efficiency of near 100% SO_2 and above 80% NO_x.
