Power dissipation and holdup in a gassed reciprocating baffle-plate column

The time-averaged power dissipation rates and gas holdups have been measured in a 15 cm diameter glass column provided with reciprocating doughnut baffle plates (internal diameter 7 and 9 cm). Most of the data were obtained at a reciprocation frequency of 5 Hz with amplitude in the range 1 to 10 mm. The continuous phase was water and the dispersed phase was air, supplied at superficial velocities mainly in the range 0.32 to 1.14 mm s^-1 The …