Acetate solvent based diesel oil pour point depressant, preparation method and application thereof

Abstract

The invention discloses an acetate solvent based diesel oil pour point depressant composition, a preparation method and an application of the acetate solvent based diesel oil pour point depressant. The acetate solvent based diesel oil pour point depressant composition comprises the components by mass percent: 0-10% of ethyl acetate, 0-20% of propyl acetate, 20-40% of butyl acetate, 0-20% of amyl acetate and 10-30% of diesel oil pour point depressant. The preparation method comprises the steps of: mixing all the raw materials and stirring in thermostatic water bath; and controlling the rotating speed to be 120r/min to obtain the acetate solvent based diesel oil pour point depressant 30minutes later. The acetate solvent based diesel oil pour point depressant composition improves the dispersive action of the diesel oil pour point depressant for wax crystals at the low temperature, and improves the low-temperature fluidity of oil products; and the acetate solvent based diesel oil pour point depressant composition can be added into commercially available 0-model diesel oil, so that the cold filter plugging point is reduced by 5-11 DEG C, and the condensation point is reduced by 6-10 DEG C.

Description

technical field [0001] The invention relates to a pour point depressant and a preparation method thereof, in particular to an acetate-based solvent-based diesel pour point depressant for diesel pour point depressant, a preparation method and application thereof. Background technique [0002] Diesel pour point depressant is an additive that can significantly reduce the freezing point and cold filter point of diesel and improve the low temperature flow performance of diesel when added in a small amount. It mainly improves the low temperature flow properties of diesel through eutectic, adsorption, solubilization or nucleation. The research on diesel oil pour point depressant is of great significance to increase the output of diesel oil, save kerosene, increase the ratio of diesel to gasoline and improve the economic benefits of refineries. At present, in order to obtain a better cooling filter point reduction effect, domestic and foreign mainly focus on the research on the co...

AI Technical Summary

Problems solved by technology

From the perspective of practical application effect, the main problem faced by diesel pour point depressants is that the developed varieties have strong dependence on diesel components and poor susceptibility to different components of diesel, especially for high waxy diesel, which has almost no improvement effect. Its application is very limited

From the experiments and the structural analysis of the pour point depressant, it is believed that the poor dispersibility of the pour point depressant to the wax crystal clusters that appear at low temperature of diesel oil is the main reason for its poor sensitivity