Progress in Study of NOx Removal from Flue Gas by Non-thermal Plasma

摘要

Tests for removal of nitrous oxides are performed by simulating flue gas using self-designed and self-developed plasma generator in this experiment; research and analysis show that there is a direct andlinear relationship between the efficiency of denitration and the input power of plasma at normaltemperature. The plasma generator begins to discharge at an input power of 15w to remove thenitrous oxides; the removal efficiency improves continually with the increase of plasma input power;then, it maintains the efficiency of over 80% when the input power is 35w, displaying a weak relationbetween the two factors. From the aspects of technology and economics, removal efficiency can beimproved by high input power, but it is of huge energy consumption, being not economically feasible.Meanwhile, brief experimental analysis on removal efficiency is performed by adding sulphur dioxideinto the mixed gas.