Transport Phenomena at the Wall of a Shaking Vessel with Horizontally Circulating Motion.

Abstract

The mass transfer coefficient at the wall of a horizontally shaking vessel was measured with the constant potential method using 1N-KOH+0.2N-K4 Fe (CN) 6 +0.01N-K3Fe (CN) 6 aqueous solution.The average mass transfer coefficient depended strongly on a circulating frequency above the critical circulating frequency for mixing, compared to that below the critical frequency. In the higher circulating frequency range, the shaking vessel had almost the same performance as that for impeller mixing. In the lower circulating frequency range, the former had inferior performance to the latter.The local mass transfer coefficient showed a higher value at higher positions of the vessel wall from the bottom. The maximum local mass transfer coefficient was observed at the trough of the free surface wave.