Effect of hydrophilic properties of packings on mass transfer
performance of water distillation
Abstract
Water distillation is an effective method for detritiation and deuterium
enrichment. This study focuses on the effect of the wettability of the
packings surface on the separation performance of the H2O-HDO system.
Hydrophilic coatings with different structures are prepared on the
surface of copper packings by the method of alkaline erosion and
oxidation, and it is found that the hydrophilic coatings with different
structures showed different hydrophilic effects. The differences in mass
transfer performance of packings with different contact angles are
investigated. It is found that with the increase of hydrophilicity, the
mass transfer performance of the packing is relatively improved. By
combining empirical models of mass transfer and experimental data, a
mathematical model for predicting the height of equal plate (HETP) is
established to quantify the effect of wetting properties on the mass
transfer process.