A continuous flow apparatus was applied to measure the phase equilibrium at 523 K and 573 K. The performance of the apparatus was analysed with the determination of vapor pressures of water at the temperatures (T = 453 K and 473 K). The measured water vapor pressures deviated from the literature values less than 1 %. Vapor pressures of n-dodecane, n-hexadecane and phenol were measured at the temperatures (T = 523–623 K) and, the bubble point pressures of n-dodecane + phenol and n-hexadecane + phenol were measured at the temperatures (T = 523 K and 573 K). The measured vapor pressures of the pure components were compared with the literature values. Relative vapor pressure deviated from the literature value less than 2 % for all the measured vapor pressures. The measured vapor pressures value in this work agreed well with the literature, which indicates that the measurement apparatus and the method can produce good-quality data. The measured bubble point pressures for the n-dodecane + phenol and n-hexadecane + phenol systems were modeled with Peng-Robinson and Perturbed-Chain Statistical Associating Fluid Theory (PC-SAFT) equations of state and Non-random Two-liquid (NRTL) activity coefficient model. The measured systems were at first modeled with Peng-Robinson and Perturbed-Chain Statistical Associating Fluid Theory (PC-SAFT) equations of state without binary interaction parameters. Additionally, the parameters were regressed to optimize the performance of the models. The NRTL activity coefficient model described the behaviour of the measured and the literature data better than the equations of state. Furthermore, the Peng-Robinson equation of state resulted in better predictions than PC-SAFT equation of state even without binary interaction parameters regression. Both equations of state modeled the phase equilibrium behaviour of the system well. The n-dodecane + phenol system showed azeotropic behaviour.

使用连续流动装置测量在523 K和573 K时的相平衡。通过确定温度（T  = 453 K和473 K）下的水蒸气压来分析设备的性能。测得的水蒸气压力偏离文献值小于1％。在温度（T  = 523–623 K）下测量正十二烷，正十六烷和苯酚的蒸气压，并在温度下测量正十二烷+苯酚和正十六烷+苯酚的沸点压力（T = 523 K和573 K）。将纯组分的测得蒸气压与文献值进行比较。对于所有测得的蒸气压，相对蒸气压均偏离文献值小于2％。这项工作中测得的蒸气压值与文献非常吻合，这表明该测量装置和方法可以产生高质量的数据。正十二烷+苯酚和n的实测气泡点压力用Peng-Robinson和扰动链统计缔合流体理论（PC-SAFT）状态方程和非随机二液（NRTL）活性系数模型对十六烷+苯酚系统进行建模。首先用Peng-Robinson和扰动链统计缔合流体理论（PC-SAFT）的状态方程对测量的系统进行建模，而没有二元相互作用参数。另外，对参数进行回归以优化模型的性能。NRTL活度系数模型比状态方程更好地描述了被测物和文献数据的行为。此外，即使没有二元相互作用参数回归，Peng-Robinson状态方程也比PC-SAFT状态方程产生更好的预测。两个状态方程都很好地模拟了系统的相平衡行为。这正十二烷+苯酚体系表现出共沸行为。