ESTIMATION OF THE COLLECTION EFFICIENCIES OF THE THREE TYPES OF THE CYCLONE DUST COLLECTORS FROM THE STANDPOINT OF THE FLOW PATTERNS IN THE CYLINDRICAL CYCLONE DUST COLLECTORS

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The experiments of the collection efficiencies with the fly-ash particles of the arithmetic mean diameter Xp=2.06μm for the returned flow type (D1=90 mm), the axial flow type (D1=90 mm) and the cone type (D1=100 mm) of the tangential inlet cyclones were done. The feed concentrations of the particles were Co=5 - 45 g/m^3. The best collection efficiencies were obtained by the ordinary returned flow type the cyclone and the worst collection efficiencies were obtained by the axial flow type of the cyclone. The main differences of those collection efficiencies were elucidated by the generation of the couple circulation zones based upon the analysis of the equi-flow rate lines in the axial flow cylindrical cyclone.
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