▎ 摘　　要

NOVELTY - An environmentally-friendly diesel oil comprises 5-85 wt.% oil recycled from waste engine oil, 1-30 wt.% dimethyl carbonate, 1-35 wt.% fatty acid methyl ester, 3-25 wt.% methylal, 5-85 wt.% methanol, 0.05-5 wt.% castor oil polyoxyethylene ether, 0.05-5 wt.% Span 80 (RTM: Sorbitan monooleate), 1-35 wt.% methyl acetate, 1-30 wt.% polymethoxymethane, 0.1-5 wt.% isooctyl nitrate, 1-10 wt.% dipentene, 0.01-5 wt.% tea polyphenol, 0.01-5 wt.% fluorocarbon surfactant, 0.1-5 wt.% petroleum barium sulfonate, 0.1-5 wt.% ferrocene, 0.1-5 wt.% zinc peroxide, and oxidized graphene. USE - Environmentally-friendly diesel oil for vehicle. ADVANTAGE - The environmentally-friendly diesel oil has low sulfur content, high calorific value, high oxygen component, low viscosity, excellent liquidity, easy atomization, reduced pollutant emissions, excellent energy-saving effect, and improved energy structure. DETAILED DESCRIPTION - An environmentally-friendly diesel oil comprises 5-85 wt.% oil recycled from waste engine oil, 1-30 wt.% dimethyl carbonate, 1-35 wt.% fatty acid methyl ester, 3-25 wt.% methylal, 5-85 wt.% methanol, 0.05-5 wt.% castor oil polyoxyethylene ether, 0.05-5 wt.% Span 80 (RTM: Sorbitan monooleate), 1-35 wt.% methyl acetate, 1-30 wt.% polymethoxymethane, 0.1-5 wt.% isooctyl nitrate, 1-10 wt.% dipentene, 0.01-5 wt.% tea polyphenol, 0.01-5 wt.% fluorocarbon surfactant, 0.1-5 wt.% petroleum barium sulfonate, 0.1-5 wt.% ferrocene, 0.1-5 wt.% zinc peroxide, and 0.0001-1 wt.% oxidized graphene. An INDEPENDENT CLAIM is included for preparation method of environmental-friendly diesel oil, which involves (1) weighing raw materials, (2) preheating the oil recycled from waste engine oil at 50-90 degrees C, and pumping into a normal temperature and pressure stirring tank, (3) turning on an agitator, stirring the ingredients, adding dimethyl carbonate, fatty acid methyl ester, methylal, and methanol, and continuously stirring for 10 minutes, (4) continuously stirring, adding castor oil polyoxyethylene ether, Span 80 (RTM: Sorbitan monooleate), and methyl acetate, continuously stirring for 10 minutes, (5) continuously stirring, adding polymethoxymethane and isooctyl nitrate, continuously stirring for 10 minutes, (6) continuously stirring, adding dipentene, tea polyphenol, fluorocarbon surfactant, and petroleum barium sulfonate, continuously stirring for 10 minutes, (7) continuously stirring, adding ferrocene, zinc peroxide and oxidized graphene, and continuously stirring for 10 minutes, and (8) mixing with a static mixer for 30 minutes, stirring, mixing, leaving stand for 30 minutes, and filtering.