Thermodynamic modelling of dissociation temperatures of Carbon dioxide hydrates in the presence of Acetone
Volume Title: 1
Department of Chemical, Petroleum and Gas Engineering, Shiraz University of Technology, Shiraz, Iran
In this work, dissociation temperatures of carbon dioxide hydrates in the presence of acetone which is a water-soluble organic promoter are studied. A simple model is proposed based on the enthalpy of hydrate dissociation for CO2+Acetone using Genetic Programming (GP) and Teaching-Learning-Based Optimization (TLBO) algorithm. Moreover, water activity is calculated using the van Laar activity coefficient model. Ten sets of acetone and water mixture concentrations for the pressure range of 0.89-4 MPa are achieved from a previous experimental study by Tatsuo Maekawa. The AAD for CO2 hydrate dissociation temperatures was found to be 0.33 K, which indicates the accuracy of the model.