Simultaneous removal of SO2 and NOx from biomass flue gas by ozone oxidation + wet scrubbing method

Abstract

In this work, factors affecting NO and SO2 removal were systematically investigated, including O3/NO ratio (V/V), different oxidant types, NaOH and KMnO4 concentrations. Results indicate that the degree of oxidation cannot be pursued too much and the best O3 / NO ratio (V/V) is 0.5. The increased amount of KMnO4 and NaOH promoted the removal efficiency of NOx. The key to the removal of NOx by KMnO4 was mainly that when the KMnO4 was 0.013 mol / L, the removal efficiency of SO2 and NOx reached 100% and 93.75%, respectively. This indicates that the technology can not only efficiently remove NO and SO2, but also has a great application prospect.