文献类型：期刊文献

英文题名：Spray of water-in-oil emulsified heavy oil with high water content

作者：Shi, Ruo-Fan[1];Xi, Yu-Feng[1];Wang, Li-Tao[2];Lu, Hong-Jun[1];Zhang, Xiao[2];Zhang, Xin-Yue[2];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;[2]Petrochina Petrochem Res Inst, Beijing 102249, Peoples R China

年份：2024

卷号：496

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20242816671145);WOS:【SCI-EXPANDED(收录号:WOS:001266940300001)】；

基金：The authors acknowledge the supports from NSFC (Grant No. 22178113) and CNPC (Grant No. 2023ZZ33-1)

语种：英文

外文关键词：Spray; Water-in-oil emulsion; Heavy oil; Flash boiling; Visbreaking; High-pressure steam environment

摘要：The spray of water-in-oil emulsified heavy oils with water content up to 30 % was studied at temperatures of 125 to 200 degrees C and pressures of 4 to 10 MPa. The spray based on four series of model emulsified heavy oil shows that the effects of spray temperature and pressure on the Sauter mean diameter (SMD) of oil droplets and spray cone angle (theta s) follow the traditional breakup model. The emulsification increases the viscosity and surface tension of heavy oils, hindering disintegration of liquid jet into fine droplets during spray. The combination of appropriate water content and superheated degree allows flash boiling of water to overcome the above adverse effects, resulting in a decrease in SMD and an increase in theta s. In the spray of the upgraded emulsified heavy oil obtained by visbreaking in high-pressure steam environments, the SMD of oil droplets could be lowered to 39 mu m, which is only half of the corresponding value of the raw heavy oil.