| 摘要 |
PURPOSE:To perform an efficient combustion of oil coke in a fluidized bed type boiler, by a method wherein unburning carbon in combustion gas is collected by dust collectors, and after the collected unburning carbon and a binder are mixed and grained into a grain sized to allow combustion, the grains are charged in the fluidized bed type boiler for recombustion. CONSTITUTION:Carbon in dust collected by dust collectros 4 and 6 is mixed with a vegetable binder, such as asphalt, petroleum pitch, tar, tar pitch, heavy oil, a mixture solution of water and starch, paste, and a binder such as water glass aqueous solution, and is grained by a graining device 12. The grains are conveyed onto a fluidized bed of a fluidized boiler 1 through a grain conveying line 13 for combustion. |
