Pilot-scale study on acid absorption process for ammonia removal from exhaust gas of denitrification catalyst

Abstract

This paper presented the results of a study which aimed to removal ammonia from exhaust gas by sulfuric acid liquid. The results of the experiments indicated that absorption processes were efficient for removing ammonia from exhaust gas. pH 3.1 was high enough to removal ammonia from exhaust gas, and decreasing temperature of exhaust gas enhanced the removal efficiencies of NH3. In the case of pH＜3.0, the removal efficiency of NH3 exceeds 95% over all conditions of reaction time.