Flow visualization in a swirling fluidized bed

Sabudin , Sulastri and Nawab Khan, Shahzada Khan and Mohideen Batcha, Mohd Faizal (2013) Flow visualization in a swirling fluidized bed. In: International Conference on Mechanical Engineering Research (ICMER2013), 1-3 July 2013, Kuantan, Pahang.

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Abstract

A swirling fluidized bed (SFB) is known to yield high a solid-fluid interaction which augments heat and mass transfer due to the swirling motion. Its distributor is known as annular blade distributor as it is constructed from blades that are truncated sectors and has an annular geometry. The annular blade distributor provides lateral momentum which is ideal for various industrial applications. However, the distributor is limited to shallow bed operation only due to momentum attenuation in the vertical direction. This limits the full potential of the bed. The present study attempts to remove this limitation by introducing the annular blade distributor with radial inclination. Qualitative flow assessment via flow visualization technique is reported on the effect of using such distributor blades. Fine seeding particles were injected upstream of the system to observe difference in using the annular distributor (0˚ inclination) and radially inclined distributor (13.5˚ inclination). The distributor pressure drop was also measured to quantify the energy loss associated with both distributors. The findings show that radial inclination of distributor blades in a SFB is capable in reducing the net centrifugal force generated inside the bed due to the intense swirling motion. As a result, the steep variation of momentum distribution in the bed is reduced, although a slight increase in the distributor pressure drop was noticed.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:swirling fluidized bed; distributor; radial inclination; flow visualization; pressure drop
Subjects:T Technology > TP Chemical technology > TP155-156 Chemical engineering
Divisions:Faculty of Mechanical and Manufacturing Engineering > Department of Manufacturing and Industrial Engineering
ID Code:4069
Deposited By:Normajihan Abd. Rahman
Deposited On:30 Jul 2013 11:47
Last Modified:21 Jan 2015 15:21

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