The currently used urea solution for vehicles generally consists of 32.5% high purity urea and 67.5% deionized water. The concentration of urea directly affects the reduction rate of nitrogen oxides and the crystallization point of the urea solution. Too high or too low a concentration can not only improve the conversion efficiency of nitrogen oxides, but will cause secondary pollution of the remaining ammonia gas. The concentration of 32.5% was chosen because the vehicle urea solution had the lowest crystallization point at this concentration (freezing point -11 ° C). As a trucker, you must know the knowledge about urea for vehicles. There are 3 points below;
1. Vehicle urea is an environmental protection measure adopted by the state for emission reduction and emission reduction for diesel vehicles. The car is fed with urea to convert nitrogen oxides in the tail gas into harmless nitrogen and water. The amount of urea used in the vehicle is relatively large. It takes about 3-5 liters per 100 liters of diesel. When the urea solution in the storage tank is insufficient, the car will not start.
2. The most basic function of the vehicle urea solution is to convert the nitrogen oxides in the automobile exhaust into harmless nitrogen and water. The energy saving and environmental protection enable the vehicle to meet the national exhaust emission standards. Through the intelligent control of the SCR system, when the urea solution in the storage tank is insufficient, the car will not start up. In order to ensure the normal running of the vehicle, sufficient urea solution should be provided.
3. Use different quality urea solutions, different maintenance of the vehicle. When the purity of the selected urea solution is insufficient, and impurities such as particulate matter and heavy metal ions are present, it will cause serious damage to the nozzles, filters and other components of the vehicle SCR system, resulting in unnecessary economic loss. If the low-quality urea solution is not high in chemical composition and there are heavy metals and other chemical components, it will chemically react with the catalyst to reduce the tail gas conversion effect or even lose its effect.
Therefore, when selecting a urea solution, high-quality products should be used as much as possible to control the maintenance cost of the vehicle. Among them , kelansu is the best choice, and Lansu has three major advantages as a “smooth†automotive urea for domestic vehicles:
1. Reduce urea consumption
2, reduce system crystallization
3. Delay carrier scaling
Kecan
Product performance:
The uranium "smooth" car urea solution is produced by membrane filtration technology and nano-catalytic technology, which can effectively remove urea polymer (biuret, triuret, etc.), organic molecules, metal ions, etc. in the urea solution for vehicles. To prevent impurities from clogging the SCR system. At the same time, it effectively improves the quality of the urea solution for vehicles, greatly reduces the polymerization capacity, and maintains the excellent stability of the product.
The product can effectively improve the crystallization and scaling of the vehicle urea solution in the SCR system, reduce the maintenance cost of the SCR system, and reduce the consumption of the urea solution for the vehicle. The experiment proves that the use of “smooth†vehicle urea, SCR system has no crystal continuous driving mileage of more than 10,000 kilometers; vehicle urea consumption can be as low as 3% of fuel consumption, which is more than the consumption of urea for ordinary vehicles. More than 10%, effectively reducing the user's cost of use.
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