A study of filtration performance in a cross-flow moving granular bed filter: The influence of gas flow uniformity

Chia Jen Hsu, Shu San Hsiau

研究成果: 雜誌貢獻期刊論文同行評審

29 引文 斯高帕斯(Scopus)


The cross-flow moving granular bed filter where the dust-laden gas passes horizontally through the granular layer and filter granules moves downwards and is removed at the bottom of the bed. It has the advantages of high filtration efficiency and lower pressure drop. The uniformity of gas flow is important for achieving a uniform gas distribution and higher usage rate of the filter media in a cross-flow moving granular bed filter. The behaviors related to the uniformity of the gas flow have been studied in previous experiments. The goal of this study is to evaluate the relationships between a uniform gas flow and filtration performance in a moving granular bed. Filtration performance experiments were carried out at room temperature to understand the relationship between gas flow behavior and filtration performance. The performance index such as the pressure drop in the granular bed and filtration surfaces, and filtration efficiency are measured and analyzed. The different baffle geometries are taken into consideration including baffle length and angle of the gas inlet of the moving granular bed filter. The results indicate that a better filtration efficiency of up to 98.55% can be obtained by using a baffle length of 170. mm, and a baffle angle of 50°. The experimental results show that the filtration efficiency is enhanced when the gas flow becomes more uniform in the gas inlet. The experimental results of filtration performance give important information that will be helpful for designing better models of moving granular bed filters in the future such as for the Integrated Gasification Combined Cycle (IGCC) system.

頁(從 - 到)20-27
期刊Powder Technology
出版狀態已出版 - 1 4月 2015


深入研究「A study of filtration performance in a cross-flow moving granular bed filter: The influence of gas flow uniformity」主題。共同形成了獨特的指紋。