A METHOD AND APPARATUS FOR DEMULSIFYING AN OIL-WATER EMULSION VIA ULTRASONIC EFFECT

摘要

A method for demulsifying an oil-water emulsion via ultrasonic effect, which comprises the step of making the oil-water emulsion flowing through at least one ultrasonic effect zone along a flow direction. In which, in the ultrasonic effect zone, a concurrent ultrasonic that has the same direction as the flow's is generated by at least one first ultrasonic generator that is set at the upstream of the ultrasonic effect zone, and at the same time, a countercurrent ultrasonic that has the opposite direction as the flow's is generated by at least one second ultrasonic generator that is set at the downstream of the ultrasonic effect zone, the said concurrent ultrasonic and countercurrent ultrasonic simultaneously act on the emulsion that passes through the ultrasonic effect zone to demulsify it. The demulsified emulsion is dewatered through settlement separation or settlement separation under the effect of electric field. This invention can be used in all kinds of oil and water separation technologies of crude oil from exploitation to process.