摘要
分别研究了PR NRTL、RK UNIQAC和PR BM模型组合对CO2 DME,CO2 H2O和DME H2O体系的适用性,结果表明PR NRTL模型组合可以较好的预测三体系的VLE。提出了满足热力学一致性检验的四个二元体系的文献数据,并拟合了NRTL模型的交互作用参数。进而以此模型组合计算了323 15K,压力0 1MPa和1 5MPa下的DME H2O CO2体系的VLE数据,同时绘制了该三元体系的相图。
The PR-NRTL, RK-UNIQAC and PR-BM models are proposed to study the systems that comprise CO_2, DME and H_2O. It shows that PR-NRTL model combination can predict the CO_2-DME, CO_2-H_2O and DME-H_2O systems preferably. The NRTL binary interaction-parameters of the systems are regressed from the vapor-liquid equilibrium data passing through the thermodynamic consistency test. In addition, the ternary vapor-liquid equilibrium data of DME-H_2O-CO_2 system are obtained with this model at 323.15K and phase diagrams of the ternary system are drawn.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2004年第5期74-78,共5页
Natural Gas Chemical Industry
