化工学报2016，Vol.67Issue(z2)：14-19,6.DOI:10.11949/j.issn.0438-1157.20161408
R1234yf+CO2和 R1234ze（E）+CO2二元混合物的比容平移 Soave-Redlich-Kwong 方程
Volume translation Soave-Redlich-Kwong equation of state for binary mixtures of R1234yf+CO2 and R1234ze (E)+CO2
摘要
Abstract
In this work,volume translation Soave-Redlich-Kwong (VTSRK)equation of state was applied to 2,3,3,3-tetrafluoroprop-1-ene (R1234yf),trans-1,3,3,3-tetrafluoro-1-prpene (R1234ze (E)),and their binary mixtures with CO 2.A temperature-dependent volume translation term was utilized to improve high density region representation.van der Waals mixing rules was applied for mixture representation.The binary interaction coefficient was regressed from literature experiment pressure-volume-temperature-component (pvTx )data.For the pure substances,single phase densities,vapor pressure,and saturated vapor and liquid densities were compared with reference equations of state (EOS).For R1234yf,vapor phase density relative root mean square deviation (RMSD)of the calculations from reference EOS was 0.74%,liquid phase density relative RMSD was 2.86%,saturation pressure relative RMSD was 1.20%, saturation vapor density relative RMSD was 2.51%,and saturation liquid density relative RMSD was 1.05%;while for R1234ze (E),vapor phase density relative RMSD was 0.59%,liquid phase density relative RMSD was 2.48%,vapor pressure relative RMSD was 1.14%,saturation vapor density relative RMSD was 2.37%,and saturation liquid density relative RMSD was 0.63%.Compared with the original Soave-Redlich-Kwong (SRK)equation of state,the VTSRK equation of state significantly improved the density representation in the liquid region and the saturation liquid line.For mixture density calculation,the equation was compared with literature experimental pvTx data in the vapor phase.For the binary mixture of R1234yf+CO 2 ,the relative RMS was 1.17%;for the binary mixture of R1234ze (E) + CO 2 ,the relative RMS was 0.82%.The result was much better than the original SRK EOS.The result showed that the VTSRK equation of state with the temperature-dependent volume translation term was accurate within 3% for the density representation of pure substances R1234yf and R1234ze (E),as well as of the binary mixture of R1234yf+CO 2 and R1234ze (E)+CO 2.关键词
热力学性质/二元混合物/二氧化碳/状态方程/相平衡Key words
thermodynamic properties/binary mixture/carbon dioxide/equation of state/phase equilibria分类
能源科技引用本文复制引用
杨富方,段远源,杨震..R1234yf+CO2和 R1234ze（E）+CO2二元混合物的比容平移 Soave-Redlich-Kwong 方程[J].化工学报,2016,67(z2):14-19,6.基金项目
国家自然科学基金项目(51236004,51321002)。@@@@supported by the National Natural Science Foundation of China (51236004,51321002) （51236004,51321002）
