Gas hold-up and volumetric liquid-phase mass transfer coefficient in solid-suspended bubble columns with draught tube

Abstract EN

The solid suspended-bubble columns with draught tube are widely used as a threephase slurry reactor in industrial chemical process such as absorption, biochemical reactions, coal liquefaction.

etc.

To design such a column the average gas holdup ( g e) and the volumetric liquid-phase mass transfer coefficient (KLa) should be known.

This study includes the effect of gas velocity, liquid-phase properties, solid-particles concentration and the static liquid height on both ( g e ) and (KLa).

It was found that both ( g e ) and (KLa) increase with increasing gas velocity and decrease with increasing solid particles concentration, static liquid height, viscosity and surface tension of liquid-phase.