Monitoring the hydrodynamics and critical variation of separation efficiency of cyclone separator via acoustic emission technique with multiple analysis methods

Yefeng Zhou, Zhongyu Xu, Gongkui Xiao, Xiayi Hu, Hongbo Chen, Rui Zhang, Xiao Luo, Jingdai Wang, Yongrong Yang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this study, a non-invasive and environment-friendly acoustic emission (AE) technique, coupled with multiple analysis methods, was proposed to monitor the critical variation of separation efficiency of a cyclone separator by means of the gas-solid hydrodynamics. Acoustic energy analysis was used to reflect the characteristics of particle motion and particle-wall interaction. Shannon entropy analysis was adopted to reflect chaos and complexity of gas-solid two-phase motion. Multi-scale analysis (Hurst analysis and wavelet analysis) was used to obtain multi-scale characteristics inside the cyclone separator. To be specific, micro-scale collision behaviors of particle-particle and particle-wall, meso-scale interaction behavior between particle clusters and gas phase, and macro-scale interaction behavior (overall flow behavior). Furthermore, by comparison with the results of separation efficiency and pressure drop, the above-mentioned three methods based on AE technique can effectively reflect the critical variation of separation efficiency for cyclone separator.
Original languageEnglish
Pages (from-to)174-183
JournalPowder Technology
Volume373
DOIs
Publication statusPublished - Aug 2020

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