Research progress of industrial application based on two-phase flow system of supercritical carbon dioxide and particles

Recently, scCO₂ (supercritical-carbon-dioxide) used as the green medium in industrial production has attracted much attention of researchers because of its unique physical properties. Aiming at the direct or indirect interaction between scCO₂ and particles, this paper introduces in detail the research status about the combination of scCO₂ and particles to guide industrial production from three aspects. For the performance of transporting particles by scCO₂ in the two-phase flow system of scCO₂ and particles, the effect of scCO₂ flow rate, physical properties of scCO₂ and particles as well as the transporting type are reviewed. As to the heat transfer performance from particles to scCO₂, the influence of scCO₂ and particles flow rate, physical properties of scCO₂ and particles as well as the contact style between scCO₂ and particles are presented and discussed. For the mass transfer kinetics model between scCO₂ and particles of the supercritical extraction, the governing equations and application occasions of different models are presented. Furthermore, the combination or comparison of various mass transfer kinetics models for the accuracy of predicting extraction performance comparisons among above models are conducted.