Abstract
The aerosol formation in the electron beam dry scrubbing process depends mainly on the parameters dose, relative flue gas humidity and ammonia concentration. For the sulphate formation two pathways have been identified: One pathway is the radiation induced homogeneous SO 2-oxidation, yielding sulphuric acid. The second pathway is probably a heterogeneous sulphate formation mechanism in aerosol droplets. The efficiency of this mechanism depends on relative humidity, ammonia concentration and dose. Nitrate and ammonium concentrations in the aerosol depend also on dose and relative humidity. At higher ammonia-stoichiometry a saturation of the nitrate and ammonium concentrations indicates that reduction of NO x becomes important.
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