Abstract In this investigation, the equilibrium conditions of liquid propane hydrate formation in the presence of light hydrocarbons (C2-C5) are presented. The central composite design (CCD) as a method of the response surface methodology (RSM) was applied to minimize the number of experiments (47 runs) and to determine the optimum operating conditions for the highest equilibrium pressure. The effect of five independent variables involving temperature and gas mixture component concentration on the pressure of propane hydrate formation was studied. The thermodynamic model is based on the van der Waals-Platteeuw (vdW-P) combined with the Peng-Robinson (PR) and Soave-Redlich-Kwong (SRK) Equations of State (EoS) and Parrish and Prausnitz approach. For the first time, simultaneously statistical and thermodynamic models were studied, and it indicates that the statistical model (Design Expert) has a perfect correlation (R2 = 0.9999) with the experiment and the thermodynamic modeling by PVTsim (E = 0.56%) had a better predictor than MATLAB (E = 2.79%).

中文翻译：

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在轻烃 (C2-C5) 存在下预测液态丙烷水合物的形成条件：实验研究和热力学建模

摘要 在这项研究中，介绍了在轻烃 (C2-C5) 存在下形成液态丙烷水合物的平衡条件。中心复合设计 (CCD) 作为响应面法 (RSM) 的一种方法，用于最大限度地减少实验次数（47 次运行）并确定最高平衡压力的最佳操作条件。研究了涉及温度和气体混合物组分浓度的五个自变量对丙烷水合物形成压力的影响。热力学模型基于 van der Waals-Platteeuw (vdW-P) 结合 Peng-Robinson (PR) 和 Soave-Redlich-Kwong (SRK) 状态方程 (EoS) 以及 Parrish 和 Prausnitz 方法。首次同时研究统计和热力学模型，