Oil-water de-emulsification using ultrasonic technology

Area of Science:

• Chemical Engineering
• Process Engineering
• Acoustics

Background:

• Oil-water emulsions pose separation challenges in industrial settings.
• Energy-efficient de-emulsification is crucial for hazardous area operations.
• Existing methods may lack efficiency or require high power input.

Purpose of the Study:

• To investigate ultrasonic de-emulsification of oil-water mixtures in large tanks.
• To determine optimal oil-water concentrations for rapid separation and low power consumption.
• To propose a novel ultrasonic de-emulsifying device design.

Main Methods:

• Experimental investigation of oil-water emulsions (10-90% water-cut) using a 20kHz ultrasonic sensor.
• Finite element-based simulations to validate experimental findings for various emulsion ratios.
• Analysis of separation speed and power consumption across different concentrations.

Main Results:

• Emulsions with lower water content (10-40% water-cut) exhibited significantly faster separation.
• Repeatable experimental results confirmed the influence of water-cut on separation efficiency.
• Simulations validated the experimental observations for diverse oil-water ratios.

Conclusions:

• Ultrasonic technology is effective for oil-water de-emulsification, particularly at lower water-cuts.
• A new de-emulsifying device utilizing a vertically distributed array of ultrasonic sensors is proposed.
• The proposed device offers a feasible and energy-efficient solution for industrial applications.