To carry out collected particulate ashes stably without letting them stick to a route of carriage, in a precise dedusting apparatus which dedusts dust-containing gas produced from a pressurized fluidized red boiler, at a high temperature and under a high pressure.
Ashes collected by the precise dedusting apparatus in the pressurized fluidized bed boiler are received by an ash receiving chamber, while dispersion gas is dispersed into the ashes from the bottom of the ash receiving chamber at such a flow speed as to put the ashes in a state before fluidization. Thereby the ashes are held in the state before fluidization in the ash receiving chamber and the partial pressure of carbon dioxide around the ashes is lowered simultaneously. By mixing part of the ashes in the ash receiving chamber with the gas for carrying the ashes so that a solid-gas mixture fluid be made, the ashes are cooled and simultaneously the partial pressure of the carbon dioxide around the ashes is further lowered. The solid-gas mixture fluid is carried by suction by a pressure reducing unit and pressure-reduced in the front of the unit, and the fluid carried to the pressure-reducing unit is separated into the ashes and the gas for carrying the ashes.
| JPS61188326 | TRANSPORTING METHOD OF PULVERULENT BODY |
ISHIZAWA KAZUYOSHI
UEDA HACHIRO
SASAZU KOJI
UCHINO YASUNORI
SHIMIZU MASAAKI
ISHIKAWAJIMA HARIMA HEAVY IND