Diesel oil pour point depressant composition as well as preparation method and application thereof

Abstract

The invention discloses a diesel oil pour point depressant composition as well as a preparation method and application thereof. The diesel oil pour point depressant composition is prepared from the following components by mass percent: 40-60% of benzyl methacrylate-tetradecyl methacrylate, 5-25% of benzyl methacrylate-hexadecyl methacrylate, 5-20% of benzyl methacrylate-octadecyl methacrylate, 5-25% of span 80 and 10-30% of xylene. The diesel oil pour point depressant composition provided by the invention not only can effectively enhance the solubility of a pour point depressant in diesel oil,but also can effectively improve the low temperature flow performance of the diesel oil. After the obtained diesel pour point depressant composition is added into the commercially available diesel oil with model 0, the condensation point and cold filter point of the diesel oil with model 0 are respectively lowered by 22-26 DEG C and 8-11 DEG C, and the other properties of the diesel oil with model 0 can reach the national standards; the diesel oil pour point depressant composition can meet the requirement that various diesel-powered motor vehicles work normally at the low temperature.

Description

technical field [0001] The invention relates to a diesel pour point depressant composition, a preparation method and an application thereof, and belongs to the technical field of oil performance improvement. Background technique [0002] Diesel is a light petroleum product, generally composed of two or more components, including n-alkanes, olefins and aromatics, etc. It is widely used in diesel engines of vehicles and ships. The low temperature fluidity of diesel oil is an important factor limiting its use at low temperature. The low temperature fluidity of diesel can be improved by adjusting the process route, adding secondary processed diesel and adding pour point depressant. The pour point depressant has the advantages of economy, convenience, greenness and effectiveness, so it has become the first choice to improve the low temperature fluidity of diesel oil. [0003] Diesel pour point depressant is an additive that can significantly reduce the freezing point and cold f...

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide a diesel oil pour point depressant composition, which is used to solve the technical problems such as the above-mentioned common pour point depressant having poor susceptibility to diesel oil and insignificant pour point depressant effect. It has the advantages of strong sensitivity to diesel oil, simple preparation method, and remarkable pour point depressing effect.

Images