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What Is Urea

- May 07, 2017 -

Urea solution is colorless, transparent, clear liquid, the concentration of 31.8%-33.2%, for the reduction of nitrogen oxides. At present, the urea solution used in automobile is composed of 32.5% high pure urea and deionized water of 67.5%.

To Chinese first through the German automobile industry association (VDA) AdBlue certification of Sichuan Meifeng company production car with urea and blue as an example, we come to understand the related knowledge of the car with urea. Blue is the diesel engine NOx reduction agent (AUS32) of the registered trademark, is a solution containing 32.5% urea, for selective catalytic reduction system (SCR) to minimize NOx from diesel vehicles. AUS32 urea solution made from 32.5% high purity urea and purified water, clear, free of toxins, safe to use. This is a non explosive, non flammable and environmentally friendly solution. AUS32 belongs to the lowest risk class for liquid delivery, neither fuel nor fuel additives, but heavy vehicles require it to be operated in a specially configured storage tank. Filling AUS32 is just as simple as refueling, even if the AUS32 splashed in the hands, just rinse with water can be. The average consumption of AUS32 is generally used in the amount of 3-5% of diesel, the car consumes 100 liters per liter of diesel need to use about 3-5 liters of AUS32, so customers need to use AUS32 much less than diesel. In the case of the right storage, AUS32 has a one year shelf life. The location of the AUS32 must be kept away from direct sunlight, the temperature should not be too hot or too cold, and in a well ventilated storage area. The freezing point of the solution is -11 degrees Celsius, and the original quality will be retained after dissolving. Should be stored in sealed packaging when not in use.

Selective catalytic reduction exhaust aftertreatment (SCR) is a kind of technology, which is produced by the reaction of urea and ammonia, which is certified as a comprehensive emission control system to meet the requirements of the state. It is a technology of controlling NOx in diesel engine exhaust.


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