was still a lab scale. It was hard

was still a lab scale. It was hard to improve the temperature
to more than 90°C during the experiments,
because the power of heater was not enough. Furthermore,
the desalting device contained only
one-stage of desalting tank. Thus, the desalting results
(3.97 mg·L－1) could not meet the requirement of plant.
If temperature would be increased to 140°C and
two-stage of process were carried out, the desalting
results should be improved and the salt content should
be decreased to below 3.0 mg·L－1. Anyway, ultrasonic
technology improved the desalting results considerably.
Pilot-scale experiments with the ultrasonic-electric
united devices were planed to carry out. To the high
salt-contenting crude oil, the novel ultrasonic-electric
united technology could be considered. With the development
of the ultrasonic technology, it would be a
useful technology in the scaled process in future.