The Effects of Liquid Bridge Force on Wet Particles Fluidization Movement in Conical Spouted Bed

Numerical simulations were performed to study the effects of two factors, water content and contact angle of liquid bridges, on the fluidization characteristics, particle temperature, and particle concentration of wet particles in a spouted bed. Results shows that the number of fluidized particles increases with the height of the spouted bed. When the water content is 0, there is no particle agglomeration in the fountain region; as the water content increases, the flow velocity in the Z direction first increases and then decreases, and obvious agglomeration occurs in the fountain region. When the contact angle increases, the flow velocity in the Z direction first decreases and then increases, with the minimum velocity occurring when the contact angle is 30◦. The larger the contact angle, the closer the core high-temperature region is to the spout region When the contact angle is 30◦, the particle movement resistance reaches its maximum value, and the least number of particles escape from the bed layer with the airflow. © 2023 Science Press. All rights reserved.