If the cyclone diameter is designed according to the following expression, the cyclone separator is operated close to MEIV whatever KA is:
During experiments on cyclones in series, it is necessary to calculate the MEIV of each cyclone stage based on cyclone dimensions to ensure its operation close to MEIV.
It should be noted that the MEIV of the cyclone increases when the gas viscosity is increased or the gas density decreased due to the rise in temperature.
The results showed that the MEIV of the cyclone for oil shale ash was 15 m/s, and for FCC fine catalyst, 23 m/s.
The balance between these opposite effects results in the phenomenon of MEIV.
Moreover, a significant difference between the predicted and experimental MEIV values was observed.