NOVELTY - Spraying biodiesel oil without premixing involves keeping methyl alcohol and lipid into methyl alcohol-acid catalyst storage room and then adding 98% concentrated sulfuric acid to methyl alcohol-acid catalyst storage room. The obtained material is mixed to obtain methyl alcohol-concentrated sulfuric acid mixed liquid. The obtained liquid is kept in lipid storage room at 60-70 degrees C and then the obtained material is atomized. The atomized material is kept directly into the spray reaction room at 120-140 degrees C without pre-mixing to obtain lipid-methyl alcohol-concentrated sulfuric acid.    USE - Method for spraying biodiesel oil without premixing (claimed).    ADVANTAGE - The method enables to spray biodiesel oil in simple and cost-effective manner, and with high production efficiency and acid value.    DETAILED DESCRIPTION - Spraying biodiesel oil without premixing involves keeping methyl alcohol and lipid into methyl alcohol-acid catalyst storage room and then adding 98% concentrated sulfuric acid to methyl alcohol-acid catalyst storage room. The obtained material is mixed to obtain methyl alcohol-concentrated sulfuric acid mixed liquid. The obtained liquid is kept in lipid storage room at 60-70 degrees C and then the obtained material is atomized. The atomized material is kept directly into the spray reaction room at 120-140 degrees C without pre-mixing to obtain lipid-methyl alcohol-concentrated sulfuric acid mixed granules. The outlet valve is opened to obtain liquid discharge. The liquid discharge material is kept in standing room to obtain fatty acid, glycerol, methyl alcohol, concentrated sulfuric acid and mixed liquid of water. The obtained material is kept to obtain product layers in standing room. The upper layer is methanol-concentrated sulfuric acid mixed liquid layer, middle layer is crude biological diesel oil layer, and the lower layer is mixed liquid of lipid-glycerol-water. The upper layer of methanol and concentrated sulfuric acid mixed liquid is kept in floating liquid absorbing machine to carry out circulation reaction. The unreacted lipid in lower layer is kept in a lipid storage tank for performing recirculation reaction, where the circulation reaction time is 3-5 hours, and the conversion rate of biological diesel oil by circulation reaction is more than 90%. The mixture of lipid, methyl alcohol and concentrated sulfuric acid is kept for 30-60 minutes in a product standing room. The lower layer of product is discharged through outlet from mixed liquid of glycerine and water layer to obtain biodiesel oil. An INDEPENDENT CLAIM is included for a device for spraying biodiesel without premixing oil, which comprises:    (A) spray reaction room;    (B) lipid storage room;    (C) product standing room;    (D) methyl alcohol-concentrated sulfuric acid mixed liquid storing room;    (E) liquid absorbing machine;    (F) atomizing nozzle;    (G) lipid methyl alcohol and concentrated sulfuric acid atomizing nozzle; and    (H) methanol-concentrated sulfuric acid mixed liquid storing room and spray reaction room, where the spray reaction room is connected with methyl alcohol concentrated sulfuric acid feeding channel, lipid storage room and spray reaction room.