The invention relates to the technical field of fuels, and discloses a modified water-based clean fuel and a preparation method thereof, and the modified water-based clean fuel comprises 65-90% of
methanol, 5-30% of 180 # heavy oil, 0.8-1.0% of
sorbitan monooleate, 1.2-2.0% of polyoxyethylene
sorbitan monooleate, 0.9-1.5% of a composite stabilizer and 0.1-0.2% of a
combustion improver. Wherein the compound stabilizer is prepared by reacting
oleic acid with
diethylenetriamine and is used for forming a stable steric hindrance layer on an oil-
alcohol interface; the
combustion improver is a
ferrocene derivative and is used for catalyzing complete
combustion of heavy oil components. The preparation method comprises the following steps: mixing the components to form an
alcohol phase solution, and carrying out high-speed shearing emulsification and high-pressure homogenization treatment on the
alcohol phase solution and preheated heavy oil. Through the synergistic effect of the specific stabilizer and the combustion improver, the problems that a high-proportion
methanol and heavy oil
mixed fuel is prone to layering and insufficient in combustion are solved, and the prepared fuel has the advantages of being excellent in storage stability, high in combustion efficiency and clean in emission.