| Summary: | 碩士 === 國立成功大學 === 化學工程研究所 === 83 === From the experimental results,dynamic hold-up increased
gradually with increasing dispersed phase flowrates and rotor
speeds.Besides,when the organic phase was the dispersed phase
and under the same dispersed phase flowrates,it was found that
the dynamic hold-up would be higher with a larger flowrate of
the continuous phase.However this behavior was not significant
when water was the dispersed phase.A maximum hold-up was found
near the center of the column.In addition,the droplet
characteristic velocity model can be successfully applied to
describe the relationship between the dynamic hold-up and the
two phase flowrates.With organic solvent as the dispersed phase
n equals to one,while n equals to zero when water was the
dispersed phase.With organic solvent as the dispersed phase,it
was found that the happening of phase inversion starts from the
second stage,and was a cycling process.As the rotor speed
increases,the cycle time of phase inversion becomes longer and
the points of phase inversion and flooding becomes closer.The
lower the flowrate of the continuous phase,the shorter the
cycle time of phase inversion.Flooding occurs before the
happening of phase inversion when water was the dispersed
phase.(omit)
|
|---|
