Testing of New design of Mesh-coupled Axial Blade Distributor for Swirling Fluidization Operation

Year 2019, Volume: 2 Issue: 4, 111 - 118, 30.12.2019

Muhammad Yasin Naz Shazia Shukrullah Shaharin Anwar Sulaiman Afsin Gungor

Abstract

All the fluidized beds have air distributor as their
major component, which can have several variances. The distributor design worth
proper investigations as it affects the quality of the fluidization. In this
study, Particle Image Velocimetry (PIV) of a SFB, operated with a mesh-coupled
air distributor, was carried out from top and side of the bed. The velocity
vector fields of the particles and then the average velocities at different
locations of the bed were generated by considering particle size and density as
operational parameters. The experimental finds showed that there exist several
partially differentiable layers during a swirling operation of the longer beds.  The segregated bed includes a thin layer of particles
swirling at the bottom of the bed and a thick layer in the middle of the bed
followed by a slight bubbling at the top. It was also observed that the overall
velocity of the particles increased with an increase in superficial air velocity.
The uniform swirling of 3, 4 and 6 mm particles happened at superficial air
velocities of 1.6, 1.8 and 2.2 ms^-1, respectively.

Keywords

Swirling fluidized bed, mesh-type distributor, particle image velocimetry, hydrodynamics of particles

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