硫安副生型乾式脱硫プロセスの研究

抄録

In China the acid rain problem due to SOx from the coal combustion facility has been serious after 80's. It is important to devolop the economical and effective desulfurization process to solve the acid rain problem in China. In this study a new dry desulfurization process producing useful fertilizer as a byproduct has been proposed and studied. The reactant gas of NH₃, SO₂, and NO₂ was supplied into the reactor packed with fly ash or an activated ash where the reaction occurred on the surface of the packed particle. The product of the reaction was analyzed by X ray diffraction (XRD) and other qualitative analysis, the weight change of the packed material after the reaction was measured to calculate the removal rate of SO₂. The result showed that the ammonium sulfate could be formed at 110°C when the activated ash was used as the packed material, a coexistence of NO₂ improve the removal rate of SO₂ significantly and ultra fine (NH₄) ₂SO₄ particles could be newly formed on the flake-like (NH₄) ₂SO₄ surface.