Why do trucks need urea? What is urea?

For diesel vehicles such as heavy trucks and buses, in order to meet the national emission standards, an appropriate SCR system must be selected for tail gas treatment, and the system must use urea solution to treat nitrogen oxides in the tail gas. Therefore, vehicle urea solution has become an essential product for heavy trucks and buses to meet national emission standards.

Urea for vehicles is an essential product for heavy-duty diesel vehicles to meet the national emission standards. Vehicle urea refers to urea aqueous solution with urea concentration of 32.5% and ultrapure water as solvent. Raw materials are urea for vehicles and special raw materials for ultrapure water.

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When adding diesel oil, it is also necessary to supplement the urea solution for vehicles. It can ensure that the emission of pollutants is reduced by more than half, reaching the requirements of national emission standard IV. According to reports, the main function of adding urea solution to diesel vehicles is to solve harmful nitrogen oxides (NOX) in exhaust gas and convert them into harmless nitrogen and water emissions, which has solved the air pollution caused by diesel vehicles well.

Starting from 20 19, 65438+ 10 and 1 day, the whole country will fully supply automobile gasoline and diesel that meet the national standard, stop selling gasoline and diesel that are lower than the national standard, cancel the standard of ordinary diesel, and realize the "three-oil combination" of automobile diesel, ordinary diesel and some marine oils. Improve the management system of fuel oil, cleaning synergist and vehicle urea, severely crack down on the production, sale, storage and use of unqualified oil products and vehicle urea, and resolutely ban black gas stations.

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