水+天然ガス系における界面張力測定

Abstract

Interfacial tension is an important property to closely analyze multiphase-flow dynamics. In this study, interfacial tension between methane + ethane + propane and water was measured. The molar composition methane + ethane + propane gas mixture was 90:7:3. These experiments were performed at temperatures between 283.15 K and 298.15 K and pressures between 1.00 MPa and 9.00 MPa. These conditions were close to hydrate/liquid/gas equilibrium. In these experiments, pendant drop method was used the way. In comparison with the literature data of interfacial tension in water-methane system, we clarified influences of ethane and propane on the interfacial tension.