Investigation of Liquid Dispersion in the Packed-Bed by Electrical Resistance Tomography

Abstract

Revealing gas-liquid permeable flow phenomena in the porous media is helpful for the environmental impact assessment of geological disposal of radioactive waste and purification of radioactive contamination water. This paper aims to investigate the liquid phase dispersion inside co-current downward gas-liquid flow in the bed packed with spherical particle as basic model. Water and air are injected from the top center of column, and water is spreading to the entire cross-section flowing down along the column. Radial dispersion of water is captured by electrical resistance tomography on several axial positions. The results indicated that liquid flow rate have impact on radial dispersion of water.

The Liquid Maldistribution Analysis of the Trickle Bed Reactor with the CFD Method

“…Relative error between ERT and CFD is used to evaluate the uniformity. Since a true value cannot be obtained here, the denominator of relative error is replaced by a larger value between x ERT and x CFD as equation (15). erefore, the relative error is still in a range from 0% to 100% and negative values will not appear.…”

“…Mcmanus et al [14] have investigated the distribution of only a single liquid phase under different flow rates in TBR by ERT. en, Eda et al [15] have investigated the gas-liquid flow distribution of spherical particles in the packed bed by ERT and found that the liquid flow rate has an influence on the radial diffusion of liquid phase.…”