Abstract: A combined emulsification technique was introduced to intensify emulsification by means of ultrasonic and mechanical stirring. Effects of ultrasonic power，ultrasonic frequency，emulsification temperature and time on the dispersity of water in heavy-oil by the combined technique or ultrasonic stirring alone were investigated on the basis of Sauter mean diameter（SMD）calculation. Results showed that the combined technique could achieve a higher dispersity of water with a 4—8 μm decrease in SMD of the disperse phase. The dispersity of water increases with the increase in ultrasonic power and emulsification temperature，while the emulsification temperature should not be higher than 90 ℃. Lower ultrasonic frequencies are favorable to the micronization of water in heavy oil. With the increase in emulsification time，the dispersity of water first increase and then decrease. As a result，the optimal experimental conditions can be considered as is 500—600 W of ultrasonic power，25—40 kHz of ultrasonic frequency，70—80 ℃ of emulsification temperature，and about 30min of emulsification time.

摘要： 采用超声波-机械搅拌联合乳化（联合法）重油技术，根据索太尔平均直径（SMD）计算法，研究了超声功率、超声频率、乳化温度、乳化时间对乳化重油中分散相（水）分散度的影响，并比较了以上因素对超声波法与联合法乳化重油分散度影响的差别。结果表明：联合法乳化重油的分散度高于超声波法，分散相（水）的SMD降低4～8 mm；超声功率、乳化温度的增加有利于分散度的提高，但乳化温度不宜超过90 ℃；较低的超声频率有利于水在重油中的微细化；随着乳化时间的增加，乳化重油分散度先提高后降低。本实验得出联合法乳化重油的理想工艺条件为：超声功率为500～600 W，超声频率为25～40 kHz，乳化温度为70～80 ℃，乳化时间为30 min左右。