Radiation Chemical Studies on the Electron-Beam Treatment of Exhaust Gases

摘要

This report summarizes the radiation chemical studies on the synthetic models of exhaust gases which has been done in JAERI-Takasaki. Radiation-induced reactions of low concentrations of SO sub 2 and NO was studied in dry and moist mixtures of N sub 2 and O sub 2 . SO sub 2 was oxidized to H sub 2 SO sub 4 only in the moist mixtures. Oxidation of NO and reduction of NO sub 2 took place simultaneously and approached to a radiation-chemical stationary state in the dry N sub 2 -O sub 2 systems. NO was easily oxidized to NO sub 2 and finally to HNO sub 3 in the moist systems. Addition of NH sub 3 in the mixture enhanced the NO-removing reactions and suppressed the NO sub 2 - and HNO sub 3 -formations. A set of reaction mechanisms deduced is proposed. The reaction proceeds by the mechanism of such indirect effect of radiation as the energies absorbed by the main components are transferred and utilized effectively to the SO sub 2 - and NO sub(x)-removing reactions. (Atomindex citation 12:585488)