Active species injection in flue gas denitrification

Active species injection or radical shower technique in flue gas denitrific ation is simulated with a continuous-flow stirred-tank reactor (CSTR) model . The kinetic equations can be established with this simulation and solved with a computer program. Main fundamental reactions have been picked out fr om the results of the simulation of every active species injection system. The kinetic equations of OH, O-3, N, NH, NH2 injection and NTP-activated NH 3 are solved and NO removal fractions as functions of different parameters are calculated. Practical feasibility of every system is discussed. It is r ound that the practical feasibility of OH, N, NH and NH, injection and gene ration is limited by their self-recombination and low obtainable concentrat ions. O-3, injection can be used to oxidize NO to NO2. (C) 2000 Elsevier Sc ience Ltd. All rights reserved.