Study Of Interfacial Area Between Gas And Liquid In Gas-Liquid- Solid Three Phases Cocurrent Upflow Systems

摘要

In this paper the study of interfacial area a is carried out in gas-liquid-solid three phases cocurrent upflow reactor, which is a φ25 mm, 2500mm height tube. The interfacial area of Bubble Flow, Slug Flow and Frothy Flow in tube is measured by the chemical reaction method(CO_2-NaOH) respectively. Through experimental study, It isrnshown that with increase of superficial gas velocity u_g, the flow regime changes fromrnBubble Flow to Slug Flow, then to Frothy Flow and the interfacial area is increased in each flow regimes; the effect of solid concentration on interfacial area is complex and different in each flow regimes.