A newly designed particle separator was suggested in the form
of uniflow cyclone. The characteristics of coal particle separation and
pressure loss between the separator inlet and the air outlet were
studied to analyze the performance of the uniflow particle separator.
From the result of the experimental measurements, the conclusions
are summarized as follows:
(1) The efficiency of particle separation increased with the increase
in the length of the gas outlet tube (LT) up to 193 mm and
decreased when LT ≥ 193. The efficiency of particle separation
(εP) was maximized and estimated at 99.7% when LT =
193 mm. The pressure drop between the separator inlet and
gas outlet (ΔP) was measured to be below 210 Pa in Cases 1 ~ 4.
(2) The peak diameter of the collected coal particles (DP,peak) was
724.4 μmand the cut-size diameter of the corrected coal particles
(DP,50)was 416.9 μmwhen the uniflowcyclone separator has the
maximum efficiency in terms of particle separation at LT =
193 mm.
(3) When the gas outlet tube length was fixed at LT = 175 mm,
mean separation efficiency increasedwith dust gas velocity, particle
loading, and surrounding pressure in uin = 5.2 ~ 13.0 m/s,
ṁP = 0.82 ~ 3.02 g/s, and P∞ = 3 ~ 5 bar. Mean pressure drop
was minimized in uin = 11.7 m/s, ṁP = 2.01 g/s, and P∞ =
2 bar and measured about ΔP = 100 Pa.