Cavitation process for water-in-fuel emulsions

A cavitation process for preparing a water-in-oil emulsion, comprising:

• a) adding water to fuel in a range of 5% to 35% of the total volume;
• b) feeding both water and fuel into an enclosed space, wherein the mixture is accelerated through a pressure rise induced by a pumping system;
• c) forcing the mixture through an acceleration tunnel wherein it hits a first cavitation barrier with adjustable bolts;
• d) feeding the mixture through a first decompression chamber causing a pressure decrease and subsequent vaporization of the mixture to form a vaporized mixture, forming water droplets whose diameter ranges from 1 μm to 3 μm;
• e) feeding the vaporized mixture on the second cavitation barrier with adjustable bolts, to a second decompression and adjusting the number and arrangement of adjustable bolts in order to control the formation of water droplets with a diameter between 0.1 μm and 1 μm.