期刊
CHEMICAL ENGINEERING JOURNAL
卷 309, 期 -, 页码 249-262出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2016.10.019
关键词
Deposition; Cyclone separator; Vortex finder; FCC; DPM
资金
- Science Foundation of China University of Petroleum, Beijing [2462015YQ0302]
- National Natural Science Foundation of China [21566038]
Based on the industrial background of carbonaceous deposition in secondary cyclone separators of FCC units, this paper focuses on particle deposition pattern and investigation of factors on deposition on the outer surface of vortex finder of secondary cyclone. Particle deposition experiments were carried out with a 500 mm-diameter cyclone in a cold-model pilot test platform. Deposition patterns were obtained under different inlet gas velocities, particle concentrations and experimental materials etc. Furthermore, discrete phase model (DPM) was applied to obtain particles distribution in the annular space and the effect of particle properties and operational conditions on mass of deposited particles was also investigated. In addition, Gas shielding method was preliminarily explored to avoid particle deposition. The results will provide experimental evidence for analyzing the deposition process and help to further understand the deposition mechanism. (C) 2016 Published by Elsevier B.V.
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