Drying of sponge media using swirling fluidized bed dryer
Surface preparation is a process of treating a surface to increase its attraction to coatings and imperative to ensure satisfactory coating can be attained. Conventional techniques of surface preparation usually involve blasting of abrasive material on the surface which usually associated with airbo...
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| Main Authors: | , , , |
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| Format: | Article |
| Published: |
Trans Tech Publications Inc
2014
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.4028/www.scientific.net/AMM.660.644 http://dx.doi.org/10.4028/www.scientific.net/AMM.660.644 http://eprints.uthm.edu.my/6375/1/Drying_of_Sponge_Media_Using_Swirling_Fluidized_Bed_Dryer.pdf |
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| Summary: | Surface preparation is a process of treating a surface to increase its attraction to coatings
and imperative to ensure satisfactory coating can be attained. Conventional techniques of surface
preparation usually involve blasting of abrasive material on the surface which usually associated
with airborne debris and hazardous contaminant from the process. A relatively new technology in
surface preparation is the usage of sponge media as an alternative to the conventional abrasive
material. Being soft and elastic, sponge media can reduce airborne emission from surface
preparation significantly while being able to be recycled. Unfortunately, the recovery of used
sponge media becomes difficult during rainy conditions in which the sponge absorbs water and
quickly becomes saturated. Therefore, this paper presents the drying characteristics of sponge media
using a swirling fluidized bed dryer (SFBD) for rapid drying to overcome the long, inefficient sun
drying as per current practice. Several laboratory scale experiments were carried out to dry water
laden of the sponge media in the SFBD. Three bed loadings of 1.7, 2.0 and 2.3 kg were used at
drying temperatures of 80°C, 90°C and 100°C. The experimental works revealed the excellent
potential of the SFBD in drying the sponge media rapidly. The behaviour of moisture ratio and
drying rate against time were discussed. |
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