How is automotive urea made?
3 Answers
1. Regular urea solution: 32.5% high-purity urea, 67.5% deionized water. 2. Antifreeze urea solution: 32.5% high-purity urea, 52.5% deionized water, 15% methanol. Additional information about automotive urea: 1. The SCR solution has significant advantages in the exhaust emission treatment system of National IV diesel vehicles, and automotive urea is an essential additive for the SCR solution. 2. Automotive urea solution is a necessary product for heavy-duty trucks and buses to meet the National IV emission standards.
I've worked in the chemical industry, and AdBlue is made by mixing urea with water, but the process is quite meticulous. First, manufacturers synthesize urea crystals using industrial methods, typically by reacting ammonia and carbon dioxide under high temperature and pressure to produce ultra-pure solid urea. Next, these crystals are rigorously filtered to remove impurities like metal ions, ensuring they won't clog the vehicle's system. Then, in a sterile workshop, they are dissolved in deionized water to precisely form a 32.5% solution—this is AdBlue. The entire process emphasizes environmental protection and efficiency, as any deviation could affect the SCR system's performance. Finally, it is packaged and sealed to prevent contamination. I recommend car owners check for manufacturer certifications when purchasing to ensure reliable quality.
I've been driving diesel vehicles for years, and AdBlue is essentially a purified liquid manufactured in factories. The raw material is urea powder, derived from fertilizers, but it undergoes special purification processes to achieve a high-purity form. It is then mixed with deionized water under controlled conditions, ensuring precise proportions. This step must be performed in a clean environment to prevent impurities from settling in the vehicle's exhaust treatment system. The products we buy at gas stations are mass-produced for convenience. Remember, never attempt homemade substitutes, as household materials contain too many contaminants and can easily cause malfunctions. Regularly checking the fluid level is crucial—it helps keep your vehicle's emissions cleaner.
