Model modification of single-component gas spontaneous nucleation rate

作者：Yang Wen; Cao Xuewen^*; Chen Peng; Jin Xuetang; Xu Kun

来源：Acta Petrolei Sinica, 2016, 37(11): 1443-1450.

DOI：10.7623/syxb201611013

• Calculation results
• Classical nucleation theory
• Nucleation rate
• Real gas effects
• Single components
• Spontaneous condensation
• Spontaneous nucleation
• Surface tension modeling

Among the prediction models of single-component gas spontaneous nucleation rate, internal consistent classical nucleation theory (ICCT) has attracted more attentions because of its higher accuracy. However, the defect also exists in this model, i. e., the real gas effect and the influence of droplet curvature radius on the surface tension have not been considered. Accordingly, the ICCT model was modified from these two aspects and compared with the experimental data of nucleation rate including water, heavy water, alcohols (n-propanol and n-butanol), alkanes (n-heptane and n-octane) and etc., so as to verify the accuracy of modified model. The research results show that when considering both real gas effect and the influence of droplet curvature radius on surface tension, the calculation results of water and heavy water are better than those of ICCT model, while the calculation results of alcohols, alkanes and other gases are worse than those of ICCT model, indicating poor prediction effects. This phenomenon is caused by the inaccuracy of Benson &Shuttleworth (BS) surface tension model. Compared with ICCT model, the modified model only considering real gas effect can provide better calculation results for various media, so that this model is recommended for nucleation rate calculation.

• 出版日期2016
• 单位中国石油大学（华东）