Improvement of energy efficiency and filter technology in the electron beam dry scrubber process

Energy efficiency of the simultaneous removal of NOx and SO2 from flue gas by the EBDS process may be improved by applying multiple irradiation with intermediate product scrubbing. The product, which is a mixture of ammonium sulphate and nitrate, can be filtered using bag filters and gravel bed filters yielding a by-product which is suitable for agricultural purposes. Due to the recent development of high power accelerators the costs of the EBDS process are now competitive when compared to conventional flue gas treatment methods. (Author)