化工学报2019，Vol.70Issue(z2)：1-7,7.DOI:10.11949/0438-1157.20190443
混合工质临界性质的推算研究
Theoretical study on critical properties of 4 kinds of binary systems
摘要
Abstract
Five different methods were used to calculate the critical temperatures and critical pressures of four kinds of binary mixtures, and the accuracy of different methods in estimating critical properties of binary mixtures were studied. It is found that the critical properties calculated by the Peng-Robinson (PR) equation and the Soave-Redlich-Kwong (SRK) equation combined with critical judgement, which was proposed by Heidemann and Khalil, showed a good agreement with experimental data. And results calculated by the modified Chueh-Prausnitz (MCP) method, the Redlich-Kister method and the Radial Basis Function Neural Networks (RBFNN) were also in good agreement with experimental data. The maximum absolute deviations of the critical temperatures calculated by the PR equation, the SRK equation, the MCP method, the Redlich-Kister method, and the RBFNN are 1.82%, 1.73%, 0.95%, 0.17% and 0.20%, respectively. The maximum absolute deviations of the critical pressures calculated by the PR equation, the SRK equation, the MCP method, the Redlich-Kister method, and the RBFNN are 6.07%, 5.04%, 3.49%, 1.90% and 0.67%, respectively.关键词
临界性质/二元混合物/状态方程/神经网络/热力学性质Key words
critical properties/ binary mixtures/ equation of state/ neural network/ thermodynamic properties分类
能源科技引用本文复制引用
张楠,陈龙祥,胡芃..混合工质临界性质的推算研究[J].化工学报,2019,70(z2):1-7,7.基金项目
国家自然科学基金项目(51576187,51706221) （51576187,51706221）
