CIESC Journal ›› 2013, Vol. 64 ›› Issue (10): 3514-3519.DOI: 10.3969/j.issn.0438-1157.2013.10.004

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Vapor-liquid equilibrium for tetrafluoromethane + propane system

LIU Yanni1, GUO Kaihua2, LU Laiyun2   

  1. 1. School of Civil Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China;
    2. School of Engineering, Sun Yat-Sen University, Guangzhou 510275, Guangdong, China
  • Received:2013-03-17 Revised:2013-05-30 Online:2013-10-05 Published:2013-10-05
  • Supported by:

    supported by the National Natural Science Foundation of China(51076169)and 2013 Guangzhou University Xinmiao Plan(2013-07).

CF4+C3H8体系汽液相平衡

刘燕妮1, 郭开华2, 鹿来运2   

  1. 1. 广州大学土木工程学院, 广东 广州 510006;
    2. 中山大学工学院, 广东 广州 510275
  • 通讯作者: 刘燕妮(1984-),女,博士,讲师
  • 作者简介:刘燕妮(1984-),女,博士,讲师。
  • 基金资助:

    国家自然科学基金项目(51076169);广州大学2013年新苗计划项目(2013-07)

Abstract: The isothermal vapor-liquid equilibrium(VLE)for tetrafluoromethane(CF4)+ propane(C3H8)system was measured and P,T,y data were collected at temperatures of 142.96,163.07,183.10,203.26,223.17,243.12,263.15,283.01 and 293.23 K.A vapor recirculation method was used to achieve quick equilibrium.The temperatures were measured with Pt100 platinum resistance thermometers and the uncertainty was less than ±0.005 K.The pressure was surveyed by two absolute pressure transducers,one by Keller PA33 pressure transducer with a full scale of 2 MPa and uncertainty of ±200 Pa,and the other by Mensor 6100 with a full scale of 10 MPa and uncertainty of ±1 kPa.The mixture composition measurement was performed by using a gas chromatograph(Agilent HP 6890N).After careful calibration,uncertainty was within ±0.002 in mole fraction over the whole range of concentrations.The experimental results were correlated with the Peng-Robinson equation of state and the van der Waals two-parameters mixing rule.The mean deviations between the correlated and measured vapor compositions were found satisfactory as 0.011 and the data showed good accuracy and consistency.

Key words: tetrafluoromethane, propane, vapor-liquid equilibrium

关键词: 四氟甲烷, 丙烷, 汽液相平衡

CLC Number: