Particle and Aerosol Research
Vol. 12, No. 4, December 2016, Pages 115-126
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ISSN : 1738-8716 (Print)
ISSN : 2287-8130 (Online)
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CFD Analysis on the Flow in the Connection Duct of the Cyclone-Bag Hybrid Dust Collector
Seongmo Koo1), Wonchul Oh2), and Hyuksang Chang1) *
1)Department of Environmental Engineering, Yeungnam University,
2)Jungwon E&C
*Corresponding author.
Tel.: +82-53-810-2547, E-mail: hschang@yu.ac.kr
Received 22 September 2016, Revised 22 December 2016, Accepted 25 December 2016, Available online 05 January 2017
http://dx.doi.org/10.11629/jpaar.2016.12.31.115
Abstracts
Numerical analysis was done to evaluate the movement of the particles and the fluid inside of the cyclone-bag hybrid dust collector. Flow discharged from the cyclone in the hybrid particle collector has swirl pattern, and it results in the biased flow to the bag filters and deteriorates the collection performance of the bag filter. The current study is to evaluate the effect of the duct lengths and the baffle arrays in the connection duct by the computational methods. Main concerns of the analysis are how to improve the uniformity of the internal flow between the cyclone and the bag filter. Numerical analysis was done to check the particle removal efficiencies of the system with respect to the flow characteristics which is expressed in RMS values of the upward flow inside of the connection duct. The flow pattern inside of the connection duct is evaluated under different the duct lengths and the baffle arrays. In case of the reference geometry the RMS value of inside flow was 56.7%, and the value was decreased to 30.1% by controlling the lengths of duct. The effects of baffle was also evaluated, the RMS value of flow could be decreased 55.2% and so on. But the pressure drop across the baffles becomes high and the system efficiency becomes lower.
Keywords
Cyclone dust collector, Bag-filter, CFD
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