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Filtration performance characteristics of ceramic candle filter based on inlet structure of high-temperature and high-pressure dust collectors

Authors
Lee, Kang-SanSohn, Jong-RyeulPark, Young-Ok
Issue Date
25-1월-2015
Publisher
ELSEVIER SCIENCE INC
Keywords
Hot gas filtration; Ceramic candle filter; High temperature; High pressure; Fly ash
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.21, pp.101 - 110
Indexed
SCIE
SCOPUS
KCI
Journal Title
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume
21
Start Page
101
End Page
110
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/94616
DOI
10.1016/j.jiec.2014.09.004
ISSN
1226-086X
Abstract
We fabricated and compared two high-temperature and high-pressure dust collector models: the conventional direct inlet model, where a round gas inlet pipe is connected to the bottom of the collector at a right angle; and the inertial inlet model, where a rectangular gas inlet pipe is tangentially connected. Their effects on the filtration performance of a ceramic candle filter were tested at 800 degrees C and 3 atm and compared. The inertial inlet model showed a slower increase in pressure drop as the filtering process progressed owing to the reduced dust load on the filter. The average cleaning interval was 4-7 times longer than that of the direct inlet model. The residual pressure drop increased in direct proportion to the filtration velocity and was about twice that of the inertial inlet model. The inertial inlet maintained a higher cleaning efficiency during operation than the direct inlet. The overall collection efficiency was over 99.999% with the inertial inlet model, allowing for slight variations according to the filtration velocity, and that of the direct inlet method was over 99.9% under the same conditions. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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