Measurement of the critical point for multi-component fluids by visible-type autoclave

摘要：

The critical points ofCO2-H2O, NaCl-H2O and CO2-NaCl-H2O fluid mixtures were measured by observing the disappearance and reappearance of the meniscus by using the visible-type autoclave. The critical points of CO2-H2O and NaCl-H2O fluids shift linearly with the variation in ion concentrations.The general tendency of the critical point shifting of H2O-NaCl-CO2 multi-component fluid was similar to the H2O-CO2 fluid. However at higher NaCl concentrations, the variation in the critical point was higher for higher CO2 concentrations. This phenomenon is believed to be due to the interaction of ion or ions with water molecules in the fluid.

作者: N.Hirano Y.Ota N.Tsuchiya

作者单位: Graduate school of Environmental Studies, Tohoku University, Sendai.Japan

会议类型: 国际会议

会议名称: 第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)

会议地点: 昆明

会议语种:英文

页码: 207-211

在线出版日期: 2007-07-31（万方平台首次上网日期，不代表论文的发表时间）