High-Pressure Solubility of Methane (CH4) and Ethane (C2H6) in Mixed Polyethylene Glycol Dimethyl Ethers (Genosorb 1753) and Its Selectivity in Natural Gas Sweetening Operations
High-Pressure Solubility of Methane (CH4) and Ethane (C2H6) in Mixed Polyethylene Glycol Dimethyl Ethers (Genosorb 1753) and Its Selectivity in Natural Gas Sweetening Operations
复制标题
甲烷 (CH4) 和乙烷 (C2H6) 在混合聚乙二醇二甲醚 (Genosorb 1753) 中的高压溶解度及其在天然气脱硫操作中的选择性
DOI：
10.1021/je200905z
复制
发表时间：
2012
影响因子：
--
通讯作者：
P. Tontiwachwuthikul
中科院分区：
文献类型：
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作者：
Aravind V. Rayer;A. Henni;P. Tontiwachwuthikul
在(298.15,313.15和333.15)K和7700kPaJerguson平衡池中测量了甲烷(CH4)和乙烷(C2H6)在聚乙二醇二甲醚(Genosorb1753)混合物中的溶解度。比较了二氧化碳和轻烃(CH4和C2H6)在Genosorb 1753中的溶解度数据，并与其他物理溶剂中的溶解度进行了比较。结果与Peng-Robinson状态方程(PR-EOS)进行了关联，并给出了相互作用参数。在活度系数模型中，非随机两液理论(NRTL)模型对数据的拟合效果较好，绝对平均偏差为6%。用NRTL活度系数模型预测了各温度下液体混合物的亨利定律常数(HCH4和HC2H6)和超额性质(超额吉布斯自由能(GE)、超额熵(SE)和超额焓(HE))。测定了各气体的溶解热焓和混合偏摩尔热。
The solubility of methane (CH4) and ethane (C2H6) in a mixture of polyethylene glycol dimethyl ethers (Genosorb 1753) was measured at (298.15, 313.15, and 333.15) K and at pressures up to 7700 kPa using a Jerguson equilibrium cell. The solubility data of CO2 and light hydrocarbons (CH4 and C2H6) in Genosorb 1753 were compared with the solubility in other physical solvents. The results were correlated with the Peng–Robinson equation of state (PR-EOS), and the interaction parameters are reported. Among the activity coefficient models, the Non-Random Two Liquid Theory (NRTL) model fitted the data well with an absolute average deviation of 6 %. Henry’s Law constants (HCH4 and HC2H6) and the excess properties (excess Gibbs free energy (GE), excess entropy (SE), and excess enthalpy (HE)) of the liquid mixture were predicted at each temperature using the NRTL activity coefficient model over the full range of composition. The enthalpy of solution and the partial molar enthalpy of mixing for all gases were determi...