| 摘要 |
PCT No. PCT/FI86/00002 Sec. 371 Date Aug. 25, 1986 Sec. 102(e) Date Aug. 25, 1986 PCT Filed Jan. 9, 1986 PCT Pub. No. WO86/03986 PCT Pub. Date Jul. 17, 1986.A method and an apparatus for separating coarse and fine solid particles from flue gases in a circulating fluidized bed reactor provide for flue gases to be led to a cyclone separator, located adjacent the reactor. A discharge opening is provided in the lower portion of the separator, opening into a suction chamber interposed between the discharge opening and a return duct. Coarse particles are returned to the reactor via the return duct while fine particles are pulled into a suction pipe connected to the suction chamber, and are then returned to the reactor separately from the coarse particles. At the same time, a minor portion of the flue gases are removed through the discharge opening in the separator with the solid particles and returned to the reactor. The major portion of the flue gases is discharged through an opening in the upper portion of the separator.
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