清华大学学报(英文版)
清華大學學報(英文版)
청화대학학보(영문판)
TSINGHUA SCIENCE AND TECHNOLOGY
2002年
1期
69-72
,共4页
张志禹%胡中桥%杨基础%李以圭
張誌禹%鬍中橋%楊基礎%李以圭
장지우%호중교%양기출%리이규
mixing rules%Boublík-Alder-Chen-Kreglewshi (BACK)%statistical associating fluid theory (SAFT)%equation of state%CO2-C2H5OH
Three calculational models, statistical associating fluid theory (SAFT), modified SAFT, and Boublík-Alder-Chen-Kreglewshi (BACK) are compared for supercritical CO2-C2H5OH using a set of van der Waals type mixing rules for both the BACK equation of state (EOS) and the SAFT EOS. Equations are presented for the residual Helmholtz free energy, residual chemical potentials, and compressibilty factor for mixtures. A comparison with experimental vapor-liquid equilibrium (VLE) data reveals that the BACK EOS together with the suggested mixing rules provides more accurate prediction of the binary system than the SAFT or the modified SAFT model with no adjustable binary parameters. The correlation results are improved with an adjustable parameter.
