Experimental study on filtering mixed solid–liquid dust with a sliding granular bed filter--颗粒学报PARTICUOLOGY

Peng, Y., Liu, C., Wang, L., Yin, S., Tong, L., & Jiang, Z. (2021). Experimental study on filtering mixed solid–liquid dust with a sliding granular bed filter. Particuology, 58, 16-25. https://doi.org/10.1016/j.partic.2020.12.014

Experimental study on filtering mixed solid–liquid dust with a sliding granular bed filter

Yankai Peng ^a, Chuanping Liu ^a *, Li Wang ^{a b}, Shaowu Yin ^a, Lige Tong ^{a b}, Zeyi Jiang ^{a b}

a School of Energy and Environment Engineering, University of Science and Technology Beijing, China
b Beijing Engineering Research Centre of Energy Saving and Environmental Protection, China

10.1016/j.partic.2020.12.014

Volume 58, October 2021, Pages 16-25

Received 4 July 2020, Revised 21 December 2020, Accepted 26 December 2020, Available online 18 February 2021, Version of Record 4 March 2021.

E-mail: cpliu@ustb.edu.cn

Highlights

• Collection characteristics of hot gas of solid-liquid mixed dust are studied.

• Melted particles have higher collection efficiency and pressure drop than solid.

• SSGBF exhibits good comprehensive performance for melted particles.

• Corrections of collection efficiency and pressure drop are obtained for mixed dust.

Abstract

The filtration of mixed dust that included a small number of melted (liquid) particles was studied in an experimental granular bed filter (GBF). Results show that the collection efficiency of dust containing melted particles is higher than that of dust composed of solid particles but the pressure drop from the former is higher than that of the latter. The collection efficiency and pressure drop increase as the concentration of melted particles increases. A surface sliding GBF exhibits good comprehensive performance when filtering dust, especially dust containing a mix of solid and liquid particles. The effects of the gas temperature, gas velocity, sliding filter bed thickness, and sliding collector flux on filter performance were also examined. Based on the experimental results, correlations for the collection efficiency and pressure drop for mixed dust are presented.

Graphical abstract

Keywords

Melted particle; Dust removal; Granular bed filter; Hot gas

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