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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received June 7, 2006
Accepted February 14, 2007

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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A lab-scale study on the humidity conditioning of flue gas for improving fabric filter performance

Ok Hyun Park^† Gab Jun Yoo Bong Jo Seung¹

Department of Environmental Engineering, Pusan National University, Busan 609-735, Korea ¹Research Laboratory, Digital Appliance Company, LG Electronics, Changwon City, Gyeongnam 641-711, Korea

ohpark@pusan.ac.kr

Korean Journal of Chemical Engineering, September 2007, 24(5), 717-722(6), 10.1007/s11814-007-0032-8

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Abstract

A centrifugal separator was constructed to examine the effect of flue gas humidity on the adhesional force between fabric and collected dust. A lab-scale fabric filter sampling system (FFSS) was also manufactured by using a piece of flat fabric as a sample of bag material. In addition, an automatic control system for gas humidity was devised and installed in the FFSS, and, then, the following effects were studied: (i) the influence of gas humidity on the adhesional force between fabric and dust particles; (ii) the influence of gas humidity on the performance of fabric filter in terms of pressure drop, ΔP, dust removal efficiency, η, and specific cake resistance, K2' ; (iii) the variations in the composite-performance indices with gas humidity; and (iv) the influence of gas humidity on cleaning of dust-cake in terms of effective residual pressure drop. The main objectives were to determine the minimum and maximum values for the gas humidity range and to find the appropriate conditions for dust cleaning in terms of the critical value of effective residual pressure drop.

Keywords

Adhesional Force Humidity Conditioning Fabric Filter Performance Effective Residual Pressure Drop Specific Cake Resistance

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