| 摘要 |
<p>PURPOSE:To provide an apparatus for oxidizing CaS in which CaS can be effectively converted into CaSO4. CONSTITUTION:Fluidzed beds 1a, 1b and 1c are formed within an oxidizing furnace 10 constituting an apparatus for oxidizing CaS To the fluidized beds 1b and la are independently supplied fuels 101b and 101a containing CaS as well as airs 102b and 102a, respectively. Within the fluidized bed 1c is installed a heat transfer pipe 2. A dispersion plate 3b located at a part oppositely facing against a supplying nozzle 6b for supplying the fuel 101b is provided with holes closely gathered therein so as to facilitate the supplied fuel to be easily dispersed into the fluidized bed 1b. A rate of fuel supplying amount and an flow rate of air at both fluidized beds 1a and 1b is adjusted so as to adjust a local air volume and a gas vacant tower speed at both fluidized beds and concurrently a particle replacing amount between both fluidized beds 1a and 1b is controlled, a temperature of the fluidized bed la having no heat transfer pipe installed therein is set to 900 deg.C to 1100 deg.C and a temperature of the fluidized bed 1b having the heat transfer pipe installed therein is set to 850 deg.C to 950 deg.C and then the operation is performed.</p> |
