文献类型：期刊文献

英文题名：Molecular dynamics simulation of micro-explosion of water-in-heavy oil emulsion droplets

作者：Lan, Sen[1];Lu, Hong -Jun[1];Huang, Zi-Bin[1];Yuan, Pei-Qing[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：208

起止页码：550

外文期刊名：CHEMICAL ENGINEERING RESEARCH & DESIGN

收录：;EI(收录号：20242916711141);WOS:【SCI-EXPANDED(收录号:WOS:001272480500001)】；

基金：The authors acknowledge the supports from NSFC (Grant No. 22178113) and SINOPEC (Grant No. 33600000-22-ZC0607-0017) .

语种：英文

外文关键词：Water -in -oil emulsion; Heavy oil; Micro -explosion; Evaporation; Molecular dynamics simulation

摘要：Evaporation and micro-explosion of water-in-oil emulsion droplets composed of water and polycyclic aromatic hydrocarbons (PAHs) were characterized by molecular dynamics simulation at 300-600 degrees C and 0.2-1.5 MPa. The driving force for micro-explosion of emulsion droplets comes from the difference between environment temperature and boiling point of water. Also, the evaporation potential of oil phase has a significant influence on the intensity of micro-explosion. An increase in water droplet diameter within a certain range, an increase in environment temperature and a decrease in environment pressure are beneficial to increasing the probability and intensity of micro-explosion. After an intense micro-explosion, the number of oil molecules in the resulting child clusters can be less than 20 % of the initial number of oil molecules in the emulsion droplets. The time required for complete evaporation of emulsion droplets depends on the evaporation of the largest child cluster produced by micro-explosion.