Cyclone separation efficiency and pressure drop - dependence on cyclone geometry

摘要

Cyclones are widely used in aerosol sampling as pre-separators,and in industry to recover produced material or to separate particulate pollution from the air before its release.Usually sampling cyclones are small(with diameters in cm)and industrial cyclones large(with diameters in m).How to scale the conditions from a cyclone of one size to another size is still an unresolved question.For sampling cyclones the pressure drop is usually unimportant as a filter is often used to collect the particles penetrating the cyclone.Industrial cyclones are generally used without filters with the cyclone collecting virtually all the aerosol,and therefore more stringent requirements on separation efficiency and pressure drop.An experiment was carried out in order to explore the relationship between cyclone separation efficiency and the pressure drop over the cyclone,and how these two measures of the operation of the cyclone depend on cyclone geometry.