Investigation of the gas inlet velocity distribution in a fixed granular bed filter

NCUIR > Engineering College > Departmant of Mechanical Engineering > journal & Dissertation > Item 987654321/50107

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50107

Title:	Investigation of the gas inlet velocity distribution in a fixed granular bed filter
Authors:	Hsu,CJ;Hsiau,SS;Chen,YS;Smid,J
Contributors:	機械工程學系
Keywords:	FLOW-CORRECTIVE INSERTS;HEAT-EXCHANGER;VENTILATION;PRESSURE;HEADER;BINS
Date:	2010
Issue Date:	2012-03-27 17:03:37 (UTC+8)
Publisher:	國立中央大學
Abstract:	Granular bed filter (GBF) technology can be applied for high-temperature gas cleanup in integrated gasification combined-cycle (IGCC) and pressurized fluidized-bed combustion (PFBC) advanced coal-fired power plants. The design of the gas inlet component of the granular bed filter is important to achieve a uniform gas distribution and higher usage rate of the filter media. Previous studies show that the gas velocity at the inlet is not uniformly distributed. This non-uniformity may lead to a lower usage rate of the filter media. In this study a baffle device is introduced to the inlet system in order to achieve a more uniform gas velocity distribution. A more uniform gas inlet distribution can be obtained by adjustment of the lengths and angles of the baffles. The gas velocities along the inlet and filtration surfaces are measured using a pitot tube. The uniformity of the gas velocity distribution can be characterized by looking at the distributions of the standard deviation of the gas velocity and the differences in the mean velocities between the two filtration surfaces. (C) 2010 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
Relation:	ADVANCED POWDER TECHNOLOGY
Appears in Collections:	[Departmant of Mechanical Engineering ] journal & Dissertation

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