What is the raw material of automotive urea?
1 Answers
Automotive urea raw material is a catalyst. The following is relevant information about automotive urea: 1. Reduce exhaust emissions: The main reason for adding urea to diesel vehicles is to reduce exhaust emissions, as the exhaust from diesel engines mainly consists of nitrogen oxides and carbon particles. The nitrogen oxides in diesel engines are primarily nitric oxide. If the concentration of nitric oxide is too high, it can affect human pulmonary function and cause central nervous system disorders. At the same time, when released into the air, it gradually converts into nitrogen dioxide, which has a strong irritating odor and can cause respiratory diseases in humans. 2. China IV standard regulations: Since nitrogen oxides can be catalytically reduced by ammonia from high-temperature hydrolysis of urea into nitrogen and water, which are harmless to humans and the atmosphere, the China IV standard implemented in 2008 stipulates that automotive urea must be used in the emission reduction systems of diesel vehicles.