A theoretical analysis on the electrostation separation of stirred W/O emulsion is given.The reason for acceleraton of the coalescence between two water drops by electrostatic field is quantitatively explained.On the basis of two drop collision and coalescence

a kinetic model is proposed.Continuous demulsification experiment is reported with a new kind of separation apparatus of combined electrostatic and centrifugal field.The effects of residence time

water─phase holdup

voltage applied

oil─phase viscosity on demulsification rate are investigated.The experiment results can be explained successfully by the model proposed.The new equipment is better than the traditional apparatus in demulsification.