Effect of the operation temperature on the hydrodynamics and performances of a cyclone separator
Journal
Advanced Powder Technology
Journal Volume
33
Journal Issue
11
Date Issued
2022-11-01
Author(s)
Abstract
The effect of the operation temperature on the cyclone hydrodynamics and performances is numerically investigated by Computational Fluid Dynamics (CFD). When increasing the temperature, the separation efficiency decreases and the separation quality improves due to the weakened double layer swirling flow structure. The radial drag and centrifugal forces exerted on 0.1 μm and 1 μm particles are recorded. A large radial drag force to centrifugal force ratio is required for escape: a ratio larger than 104. When the radial drag force to centrifugal force ratio is in the range of 101 to 103, it is the temperature-dependent flow field which determines the submicron particle separation. While the locus of gas zero vertical velocity is closely related to the particle's separation, the gas turbulence intensity distribution also contributes the capture of the particles.
Subjects
CFD | Cyclone | Fluid-particle drag model | Force analysis | Temperature
SDGs
Publisher
ELSEVIER
Type
journal article