Critical temperature and pressure of 24 wide and narrow fractions from Talimu crude were determined with the semi-sealed tube apparatus. Based on these experimental data, the applicability of six empirical correlation...Critical temperature and pressure of 24 wide and narrow fractions from Talimu crude were determined with the semi-sealed tube apparatus. Based on these experimental data, the applicability of six empirical correlations for calculating critical properties of Talimu oil fractions were investigated. The average relative error is 1.35%～2.09% for critical temperature and 7.06%～9.96% for critical pressure. Among these correlations, Sim-Daubert and Lee-Kesler correlations are better for critical temperature calculation and better result for critical pressure calculation was obtained by Sim-Daubert correlation, while others are not satisfactory.展开更多
文摘Critical temperature and pressure of 24 wide and narrow fractions from Talimu crude were determined with the semi-sealed tube apparatus. Based on these experimental data, the applicability of six empirical correlations for calculating critical properties of Talimu oil fractions were investigated. The average relative error is 1.35%～2.09% for critical temperature and 7.06%～9.96% for critical pressure. Among these correlations, Sim-Daubert and Lee-Kesler correlations are better for critical temperature calculation and better result for critical pressure calculation was obtained by Sim-Daubert correlation, while others are not satisfactory.
