The invention discloses emulsified
biomass fuel oil, which comprises the following components in percentage by weight: 1 to 15 percent of
biomass crude oil, 75 to 95 percent of diesel oil, 0.45 to 9 percent of emulsifying agent, 0.05 to 0.2 percent of co-surfactant, 0.01 to 0.06 percent of oxidation and
corrosion inhibitor and 0.01 to 1 percent of isooctyl
nitrate. A preparation method for the
emulsified oil comprises the following steps of: filtering the
biomass crude oil to remove coarse impurities, and removing heavy components from the biomass
crude oil by using a centrifugal
machine; and then, adding ester emulsifying agent and
ether emulsifying agent into the diesel oil and the biomass crude oil respectively, adding the two kinds of
mixed solution into a high-shear homogenizing emulsifier, stirring the
mixed solution for 20 to 60 minutes with shearing at the temperature of between 30 and 50 DEG C under 1,500 and 3,000rpm, finally adding the co-surfactant, the oxidation and
corrosion inhibitor and an inflame improver into the
mixed solution, and uniformly emulsifying the mixed solution to obtain the emulsified biomass crude oil. The emulsified biomass crude oil has long stabilization time which can reach over 6 months; the emulsified biomass crude oil has the advantages of high
utilization rate of biomass oil, good anti-
oxidation stability, low
corrosion, low ash content and high
combustion heat value; and the preparation method is simple and feasible, and has low environmental
pollution.