What are the anti-crystallization formulations for automotive urea?

[SanElliana]

Automotive urea is formulated by purifying industrial urea and mixing it with high-purity water to achieve a urea content of 32.5%. Below is an introduction to automotive urea: 1. Development Status: The SCR system includes a urea tank (loaded with diesel exhaust fluid) and an SCR catalytic reaction tank. The operation process of the SCR system is as follows: when nitrogen oxides are detected in the exhaust pipe, the urea tank automatically sprays diesel exhaust fluid, which then undergoes a redox reaction with nitrogen oxides in the SCR catalytic reaction tank, producing non-polluting nitrogen and water vapor that are discharged. 2. Origin: As environmental protection agencies in various countries proposed further reductions in nitrogen oxide pollutants emitted by diesel engines, domestically referred to as the Euro IV standard, engine manufacturers began using SCR technology (Selective Catalytic Reduction Technology) to meet the requirements of environmental protection agencies.