Emulsion fuel is a mixture of water and surfactant (additive) in a fuel oil (heavy oil, light oil, kerosene, etc.). Although water and oil are usually non-mixable, they can be mixed by using a strong surfactant and a special agitation method.
In addition, emulsion oil can be used just like conventional fuel to run boilers and engines (cars, heavy machinery, etc.) only when the mixed state of water and oil is indefinitely stable.
Since emulsion fuel can reduce the amount of currently used fuel, cost is reduced. Furthermore, it reduces greenhouse gases such as carbon dioxide (CO2), nitrogen oxide (NOx) and sulfur oxide (SOx) so it attracts attention as a highly environmentally-friendly fuel.
Although research and development of emulsion fuel has been on-going in various countries around the world for more than 100 years, besides the expected advantages, there are still disadvantages such as the ones described above such as the deterioration of basic performance as a fuel, high manufacturing cost, etc., thus it has not become popular.
However, as the development of bioethanol progresses, emulsion fuel has been re-evaluated. Surfactant-free emulsion fuels have been developing and high-quality emulsion fuels that do not separate water and oil even after a long storage time also have been developing.
Eneco has succeeded in developing a new eco fuel (a novel emulsion fuel refined with Eneco PLASMA FUSION), which achieved a complete fusion of 50% water and 50% oil by improving all the disadvantages of conventional emulsion fuels.