Storage requirements for vehicle urea solution

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Automotive urea has special requirements for storage materials, and moreover, the shelf life of automotive urea solutions can change depending on temperature. Automotive urea is alkaline and causes significant corrosion to copper, cast iron, solder, and cast aluminum. Since the crystallization point of water-soluble urea is -11°C, some pumping pipelines need to be insulated, and the temperature should not be too high, as this can lead to the decomposition of urea. Vehicle urea must be stored between -5 degrees and 25 degrees. Moreover, the shelf life varies depending on the storage temperature; when the temperature exceeds 35 degrees, vehicle urea must be tested before use. Regarding vehicle urea solutions, experts in the relevant domestic industries have conducted certain environmental impact tests. Automotive urea solution http://www.bluetechchina.com/ A stability test ； It is stable upon storage and thermally stable; at 50°C, only a small amount of free ammonia is produced. However, after 100 hours at 70°C, the level of free ammonia exceeded the maximum allowable value of 0.2%, and after 350 hours, it reached 1.4%. Therefore, the storage temperature of the urea solution should be at 50°C, as too high a temperature can easily lead to hydrolysis and affect the parameters. B Field Experiment ； Treatment experiments mainly involve canning, cleaning, spillage, etc.; motivational operation experiments (-4°C to -8°C); summer operation experiments (above 32°C); C Compatibility with other substances ； Concrete, metal containers, plastic containers, seals. Automotive urea solution has poor compatibility with concrete. There is no compatibility with plastic products; the compatibility tests conducted with polysulfide seals also indicated no compatibility. D Emulsification experiment ； Separation efficiency of fuel and vehicle urea.