| 摘要 |
PURPOSE:To obviate the necessity of seal between an air slide and a hopper and prevent dew-condensation on powdered granules by installing a pressure adjuster for reducing the pressure difference between in the conduits on an air slide side and a dust collector side and holding high, the temperature of the fluidizing gas by making the conduit as closed circuit. CONSTITUTION:Each pressure on a hopper 4 side and an air slide 6 side is always detected by pressure detectors 31 and 33 of a control box 33, and valves 18 and 20 are adjusted so that the difference between the both becomes zero. With such constitution, the flow of gas from the air slide 6 to the hopper 4 is suppressed, and rescattering of dust can be prevented. The exhaust gas discharged from the air slide 6 goes into a dust collector 13, passing through each branched exhaust pipe 15 and an exhaust pipe 12, and the exhaust gas from which dust is removed goes into a fan 7 through a circulation conduit 16, and supplied as fluidizing gas into the air slide 6 again, and dew-condensation on dust is prevented by the gas whose temperature is raised by the dust in this closed circuit. |
