ULTRASONIC METHODS AND DEVICES FOR DEMULSIFYING WATER-OIL EMULSIONS

摘要

A method for demulsifying water-oil emulsions through ultrasonic action,comprises a step of making the water-oil emulsions flow through at least oneultrasonic acting region in a flow direction, wherein: within the ultrasonicacting region, a concurrent ultrasonic wave whose traveling direction is thesame as the flow direction of the water-oil emulsions is generated by at leastaone first ultrasonic transducer provided at the upstream end of the ultrasonicacting region, and at same time, a countercurrent ultrasonic wave whosetraveling direction is opposite to the flow direction of the water-oilemulsionsis generated by at least a one second ultrasonic transducer provided at thedownstream end of the ultrasonic acting region; and the concurrent ultrasonicwave and the countercurrent ultrasonic wave act simultaneously on thewater-oil emulsions which flow through the ultrasonic acting region, so as todemulsify the water-oil emulsions. After being demulsified, the water-oilemulsions gravity settle and separate, or settle and separate under anelectricfield, so as to be dewatered. The present invention can apply to variouswater-oil separating technologies in the procedures from mining to processingof crude oil.