The Numerical Study of the Gas-Solid Flow in a Conventional Cyclone Separator
Publish place: 15th Fluid Dynamics Conference
Publish Year: 1392
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
CFD15_049
تاریخ نمایه سازی: 29 تیر 1393
Abstract:
This paper presents a numerical study of the gas–powder flow in a typical Lapple cyclonewith division of gas and particle flow in a vortex finder. The Navier-Stokes equations alongwith the RNG k-ε turbulent model are solved numerically. The separation efficiency and thetrajectory of particles are simulated and the effects of the particle size on the separationefficiency and the particle residence time are investigated. The effect of the particle density onthe particle size in the range which results 100% cyclone separation efficiency and particleresidensce time is investigated. Large particles generally have a higher concentration in thewall region and small particles have a higher concentration in the inner vortex region.Particles enter from different sides give different separation efficiency and trajectory. Aparticle with a size exceeding a critical diameter or a critical density would stagnate on thewall of the cyclone’s cone. This phenomenon is regarded as a main reason for the depositionon the inner conical surface in such cyclones used in cement industry.
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Authors
ramin Moradi
Ferdowsi University of Mashhad
Amin Deyranlou
Ferdowsi University of Mashhad
Mohammad Moghiman
Ferdowsi University of Mashhad
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