Preparation method of biodiesel composite additive

Abstract

The invention belongs to the field of fuel oil additives and in particular relates to a preparation method of a biodiesel composite additive. The preparation method of the biodiesel composite additive comprises the following steps: adding dodecyl methacrylate, steary methacrylate, isooctyl nitrate and dicthyl ortho-phthalate into a raw material mixing tank and stirring evenly; adding maleic anhydride and isooctanol and stirring evenly; and then adding tert-butylamine and double hexadecyl dimethyl ammonium chloride and stirring for 30-35 minutes; adding polyoxyethylene hexadecy phenolic ether and phenyl propargyl ether into a solution, heating to 45-50 DEG C, stirring for 20-30 minutes at 0.5-1.0MP, standing for 24 hours and filtering to remove sediment. The biodiesel composite additive prepared by the preparation method is good in cold filtering point reducing effect; and meanwhile, the problem of reversion of the cold filtering point can be avoided; the effects of other diesel additives are not influenced; and the biodiesel composite additive is efficient and stable in dispersion capability and good in oil solubility.

Description

technical field [0001] The invention belongs to the field of fuel additives, and in particular relates to a preparation method of a biodiesel composite additive. Background technique [0002] Biodiesel, also known as biodiesel, is an environmentally friendly biofuel prepared from unprocessed or used vegetable oils and animal fats through different chemical reactions. This biofuel can be used like diesel. The most common method of producing biodiesel is transesterification. Fatty acid esters are produced by the reaction of triglycerides, which are the main components in vegetable oils and fats, with alcohols (usually methanol) in the presence of catalysts. The physical and chemical properties of fatty acid esters are very similar to diesel or even better. [0003] The most common method of producing biodiesel is transesterification. Fatty acid esters are produced by the reaction of triglycerides, which are the main components in vegetable oils and fats, with alcohols (us...

AI Technical Summary

Problems solved by technology

Due to the composition and structural characteristics of biodiesel, the cold filter point of biodiesel is around 0°C, and crystallization and gelation at low temperatures limit the application of biodiesel under low temperature flow conditions

[0006] The method of using diesel additives in the prior art can improve the low-temperature fluidity of diesel to a certain extent, promote the combustion of diesel or improve the explosion-proof performance of diesel, but the function is single and can only To improve a certain performance of diesel oil, some additives will reduce other performances and indicators while improving one performance of diesel oil, lacking the synergy between components

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