Additive for reducing diesel engine PM2.5 emission and application thereof

Abstract

The present invention relates to an additive for reducing diesel engine PM2.5 emission and an application thereof. The additive is a mixture of a peroxide and an azo compound, wherein the peroxide is a peroxide with a carbon number of 8-24, and is one or a plurality of materials selected from a tert-butyl peroxide, a peroxide organic ester, or a peroxide dicarbonate, and the azo compound is azobisisobutylnitrile, 2,2'-azobis(2,4-dimethyl)valeronitrile or isopropyl azodiformate. The application comprises: adding the additive to a diesel fuel, wherein the additive content is 300-3000 ppm relative to the diesel fuel content. With the present invention, diesel engine PM2.5 emission is significantly reduced; the additive-containing diesel fuel does not produce ash during burning so as not to provide wear for the diesel engine; a good match performance of the peroxide composition and the diesel fuel is provided; the peroxide has a mild reaction temperature; the process is simple; and the product and the diesel fuel are easily mixed so as to provide high practicality.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to an additive for reducing PM2.5 emission of a diesel engine. Background technique [0002] With the acceleration of dieselization of vehicles worldwide, the demand for diesel will increase. PM2.5 in air pollution mainly comes from motor vehicles, and the vast majority of PM2.5 emitted by motor vehicle exhaust comes from diesel vehicles. It is formed by oxidation and cracking under anoxic conditions. Therefore, countries all over the world are restricting diesel engine particulate emissions more and more strictly. In order to meet the requirements of increasingly stringent emission regulations, countries all over the world are actively developing technical measures to reduce diesel engine particulate emissions. [0003] In the face of large-scale and long-term smog weather, the problem of air pollution control, especially the control of vehicle exhaust emission...

AI Technical Summary

Problems solved by technology

[0013] The above-mentioned additives can reduce particulate matter emissions from diesel engines in use. Because they contain metal elements, such as ferrocene, nano-lanthanum oxide, nano-cerium oxide, potassium