Application of electron beam from accelerator to purification of exhaust gases from combustion of high-sulphur fossil fuels

The irradiation of the exhaust gases from the burning of heavy fuel oil, mazout C-3, and the flue gases with high SO sub(2) content was carried out in INCT laboratory plant and in the pilot plant at TPP Kaweczyn, respectively. This procedure allowed these gases to be purified. The parametric study was conducted to determine the removal efficiency as the function of temperature and humidity of irradiated gases, absorbed irradiation dose and ammonia stoichiometry. The SO sub(2) removal efficiency above 95% and NO sub(X) removal above 75% were obtained when the values of the process parameters were properly adjusted. The synergistic effect of high SO sub(2) concentration and irradiation on NO sub(x) removal was observed. The collected by-product was the mixture of ammonium sulphate and nitrate with very low concentration of heavy metals.