Prediction of Volumetric Data in Supercritical Reactors

Abstract

Pressure-intensified processes are characterized by handling mixtures whose density is highly dependent on the operating conditions. In addition, fluid behavior in this type of equipment is clearly nonideal. Therefore, the frequent assumption of ideal mixing for calculating the mixture density is inaccurate. Prediction of volumetric information on mixtures is important for the design of continuous supercritical reactors and other process equipment such as heat exchangers, high-pressure pumps, compressors, etc. The isochoric method is a simple and reliable procedure to measure mixture densities and find conditions of homogeneous operation of supercritical chemical reactors at high temperature and pressure. Moreover, it also provides PvT properties simultaneously. It is well-known that the two-parameter equations of state (2P-EoS), like Soave–Redlich–Kwong or Peng–Robinson, have limitations to describe accurately the PvT properties of different fluids together with the phase transitions. The three-parameter...