The local gas phase flow characteristics of the gas-liquid two phase selfaspirated reversed flow jet loop reactor such as the radial profiles of gas holdup

bubble mean velocity and bubble size

using a miniature dual-sensor resistivity probe

were studied experimentally.A new digital processing method

based on threshold combinations of level and slope

was proposed for phase identification by the resistivity probe.In particular

the effects of the liquid jet flowrates on the local gas phase flow parameter profiles in the jet region and the tubular flow region inside the draft tube were discussed.