Water model experiments on bubble motion and bubbly flows in a gas-liquid-liquid multiphase reactor

Abstract

A water model of a bottom-blown system has been established for investigating the bubble rising characteristic from one liquid phase to another, and also to probe the liquid-liquid interfacial movement with bubble crossing. Bubble shape and its influence on the interface are studied using wetting and non-wetting nozzles, respectively. Larger-size bubbles are formed from wetting nozzles which enhanced the liquid-liquid interface fluctuation. With the use of a double-nozzle injection gas, a too-small inter-hole distance will promote the bubble coalescence and form larger-size bubbles, and appropriately controlling the inter-hole distance can improve the slag-metal mixing and transfer.