DESULFURIZING METHOD AND APPARATUS BY IRRADIATION OF ELECTRON BEAM

摘要

A high temperature gas containing sulfur oxides is cooled to a certain range of temperature by a cooling tower (24). The cooling tower (24) is a water recirculating type cooling tower in which water is recirculated by a pump (23). After the gas is cooled by the cooling tower (24), it is introduced into a process vessel (25). A portion of recirculating cooling water is withdrawn from a recirculation water tank (26) associated with the cooling tower (24), and sprayed into the process vessel (25). The sprayed withdrawn water is evaporated completely with no wastewater. Ammonia is supplied from an ammonia supply equipment (29) to the process vessel (25). The gas supplied from the cooling tower and ammonia supplied from the ammonia supply equipment (29) are irradiated with electron beam. Under the influence of the electron beam, the sulfur oxides contained in the gas are oxidized with the formation of sulfuric acid (H2SO4) and removed.