Mathematical Model of a Flash Drying Process

Table 6

The characteristic length at the injection point of the crushed coal, in meters, as function of the hot gas temperature, 𝑇, in °C, and the particle diameter, 𝑠, in mm, for a hot gas velocity of 25 m/s.

“𝑇⧵𝑠”	0.1	0.2	0.5	1.0	2.0	5.0
500	0.10	0.32	1.30	3.60	10.33	80
600	0.10	0.32	1.33	3.79	11.33	116
700	0.10	0.31	1.34	3.94	12.22	177
800	0.10	0.31	1.35	4.05	13.00	303
900	0.09	0.30	1.35	4.13	13.66	718