TWO-DIMENSIONAL FLUIDIZED-BED PHOTOCATALYTIC REACTOR HAVING ANNULUS SHAPED NARROW GAP AND METHOD FOR PHOTODECOMPOSABLE NITROGEN OXIDE USING THE SAME

摘要

PURPOSE: A two-dimensional fluidized-bed photocatalytic reactor is provided which has an annulus shaped narrow gap, and a method is provided which photodecomposes nitrogen oxide (NO) using the improved two-dimensional fluidized-bed photocatalytic reactor. CONSTITUTION: The two-dimensional fluidized-bed photocatalytic reactor comprises an annulus part (28) consisting of two quartz tubes each of which have different diameters; a porous dispersion plate (21) supporting photocatalysts (24) at the lower part of the annulus part; a reactive gas infusion part (25) installed under the porous dispersion plate; a reactive gas discharging part (27) installed at the upper part of the annulus part; and an ultraviolet ray lamp (23) installed inside the quartz tube having a smaller diameter out of the quartz tubes (22), wherein the photocatalysts (24) are one or more catalysts selected from the group consisting of TiO2, SnO2, ZnO, WO3, Fe2O3, CdS, MoS2, CdSe and MoSe2 which are coated on silica gel. The method for photodecomposable nitrogen oxide (NO) comprises the steps of filling photocatalysts into the annulus part of the two-dimensional fluidized-bed photocatalytic reactor; infusing nitrogen oxide (NO) into a reactive gas infusion part; and irradiating ultraviolet rays.