Modeling of supercritical desorbers with an equation‐of‐state‐based isotherm

Publisher Website
Google Scholar
Abstract
An equation‐of‐state‐based sorption isotherm is developed and used in modeling isothermal supercritical fluid desorption in fixed beds. The conventional fixed‐bed desorber model when coupled with density‐dependent sorption isotherm predicts the temperature, pressure, and density effects on desorber dynamics and regeneration efficiencies that are experimentally observed in supercritical fluid regeneration of fixed beds.Experimentally observed phenomena such as the presence of pressure‐dependent optimal regeneration temperature, high‐pressure‐favored regeneration, and the reversal of temperature dependence of sorption isotherm—which formerly were attributed to supercritical fluid density and viscosity, and to the endothermicity of sorption isotherm—were fully predicted and explained in terms of a density‐dependent sorption isotherm.The proposed method also promises prediction of regeneration efficiencies in cosolvent‐aided supercritical fluid desorption.

This publication has 13 references indexed in Scilit: