On the Experimental Investigation for the Separation Characteristics of a Rotary Flow Dust Collector

The characteristics of a rotary flow dust collector for the dust separation process in connection with the flow pattern of air, pressure drop, total collection efficiency and the fractional collection efficiency ηx are made clear. The test dust is fly-ash which has mean diameter xRSO =12.44 μm. Then the mechanically balancing particles x^-PB which make a statistically stationary rotation in the collector are determined experimentally. And from the relationship between x^-PB and ηx, the separation process of the dusts in the collector is investigated. Experimental equation of ηx is written as follows : ηx =1 -exp{(-1n2)(x/xCSO)m} where x is particle size and xCSO is a cut-size corresponding to x of ηx = 0.5 (50%). The exponents m of the separation are compared with the other types of cyclone, and m with xCSO is an index which shows the separation efficiency. And the results of experiments show that the collector can more easily attain a high collection efficiency than the ordinary type of cyclone.