Abstract
The effect of temperature on the hydrodynamics of trickle-bed liquid cyclic operation was studied. The t rickling-to- p ulsing t ransition in c yclic o peration ( tpT co ) was compared to s pontaneous transition ( tpT s ) in constant-throughput flow, as well as the corresponding pulsing flow regimes. The effect of temperature on tpT co and tpT s , and on liquid holdup and shock wave plateau time, was assessed for (non-)Newtonian liquids. The effects of temperature and superficial gas velocity on pulse velocity and pulse frequency were evaluated for pulsing flow in cyclic and constant-throughput flows. With increased temperature, tpT co shifted to higher gas and liquid velocities; however, the modified Charpentier–Favier diagram still adequately captured both tpT co and tpT s evolutions with temperature.
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