Detection of local fluidization characteristics using the V statistic

Abstract Defluidized zones degrade the performance of fluidized beds. Triboelectric currents at the distributor were measured in a variety of gas–solid fluidized beds. A V statistic below 1.5 ms −0.5 indicated a defluidized zone. This criterion allowed detection of defluidized zones in an industrial bed within 100 ms and is thus suitable for process control.