Abstract
Abstract Kinetics on the lignite thin-layer during hot air forced convective drying was investigated experimentally as a function of drying conditions (hot air temperature and speed). The experiments were conducted at hot air temperatures of 100, 110, 120, 130, 140, 150, and 160 °C and hot air speeds of 0.6, 1.4, and 2.0 m/s. The drying process of lignite presented a combination of the short warm-up period, the first falling rate period and the second falling rate period. The Midilli model gave a perfect prediction for the lignite thin layer drying. The effective moisture diffusivity of lignite thin layer was from 5.098 × 10 −9 to 1.481 × 10 −8 m 2 /s for the first falling rate period, and from 7.003 × 10 −9 to 1.907 × 10 −8 m 2 /s for the second falling rate period. The hot air temperature and speed had significant effect on the effective moisture diffusivity of the lignite sample ( P
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call