Page 353 - Dust Explosions in the Process Industries
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322 Dust Explosions in the Process Industries
Figure 4.33 Upward flame propagation in a Ca-Si dust
cloud in a 1 50 rnm, that is, vertical combustion. tube
(From Deng et al., 1987).
- 1.0 -
.r:
6
I
0
-1
g 0.5 - Figure 4.34 Upward flame velocity versus con-
9 centration of dry coal dust in air in a vertical tube
L
O of internal diameter 150 mm, open at bottom,
a
and closed at top. Coal dust from Funsun,
Peoples Republic of China: 39% volatiles and
0.0 I I I I I 14 % ash, median particle diameter by mass 7 3 p,
and particle density 2.0-2.5 g/cm3 (Data from
Kong, 1986).
