(204f) Experimental Determination of Phase Equilibria of Clathrate Hydrates of Mixture Water + Hexane + Decane + Carbon Dioxide and Semi-Clathrates Hydrates of Mixture Water + Ithermodynamic Promoter + Hexane + Decane + Carbon Dioxide

In México, the principal problem in the oil industry is a high produced water during the oil extraction e.g. Cantarell produce more than 50% volume of water causing several problems like pitting. In recently years, hydrates formation is considered as a novel alternative for separation applications, such as gas storage, water desalination, CO₂ capture, separation gases, gas supply, oil and gas separation, and principally, dehydration oil process. Gas hydrate are crystalline solid ice-like that are formed by water molecules in contact with small gas molecules such as CO₂, N₂, H₂, light hydrocarbons, etc. at low temperatures (above freezing point water) and high pressures.

Since oil is a multi-component mixture of hydrocarbons, a systematic study on the phase equilibrium conditions of mixtures containing liquid hydrocarbons is required. In this work, the experimental dissociation conditions for the systems H₂O + C₆H₁₄ + C₁₀H22 + CO₂ and H₂O + thermodynamic promoter + C₆H₁₄ + C₁₀H₂₂ + CO₂ were determinate at pressures up to 3.5 MPa and temperature range of 273 K to 290 K using an apparatus based synthetic-static method with a isochoric technique. The goal of this study is determine the effect of two liquid hydrocarbons and the thermodynamic promoter in the dissociation conditions. The combined expanded uncertainties of the dissociation conditions were estimated to be less than 0.012 MPa, 0.200 K and 0.002 for pressure, temperature and mass fraction, respectively.