Guilin where a car with urea sell | Guilin where to buy a car with urea

 CR technology is added in the hot exhaust gas for automobile use in vehicles with urea solution (known as AdBlue commodity), a solution of urea SCR catalyst in the subsequent reaction with the nitrogen oxides, it is converted to nitrogen and water vapor. Urea content directly affects the freezing point of the urea solution and the catalytic efficiency of NOx. Reduction in the SCR system, the concentration of urea solution is one of the key factors, the concentration is too high or too low, not only can improve the conversion efficiency of NOx, but will result in the loss of ammonia slip (due to high NH3 / NOx ratio caused ammonia leakage), the formation of secondary pollutants ammonia. Catalytic reduction using urea solution is to control diesel exhaust emissions proven techniques. Only urea solution standard specifications and test methods to be strict rules to ensure diesel exhaust purifying effect, to prevent unqualified urea solution brings new pollution adversely affect the urban atmosphere. LA40 is the measurement of the concentration of urea dedicated diesel urea solution (AUS 32) the concentration of the product. Product Name and Model Range smallest scale urea concentration meter LA40 0-40% 0.2 vehicle urea concentration was 32.5% and the solvent for ultrapure urea solution, the production of raw materials for urea crystals and ultra-pure water, the key point is that the raw material purity. From the production process, although the car with urea raw material purity requirements than the general industrial demand, but currently the process already meet the actual application requirements. Car urea production process is not sufficient to build high barriers to entry. Domestic car urea mainly come from the industrial purification of urea, the main principle is: 1) at a temperature of 70-75 ℃, urea hydrolysis in aqueous solution. 2) at a temperature below 30 ℃, urea re-crystallized from the aqueous solution. 3) Every once hydrolyzed crystalline purity will be a substantial increase in the general level of industrial use of urea hydrolysis crystallized once, you can reach the car with urea standards, its output ratio of 1.5: 1. Automotive electronics industry a urea must use ultra-pure water. Car urea SCR catalyst carrier due to metal ion poisoning and thus prone to lose catalytic effect, so the car must be used with urea solution in the electronics industry an ultrapure water (resistivity ≥18MΩ? Cm). The car will start with a urea solution freezes at -11 ℃, the actual use will be completely frozen at -20 ℃ on time. Current technology is reduced by the addition of modifying agent solution freezing point, plus a means of heating devices to prevent solidification of the solution. Car urea solution (AdBIUe) does not contain any other additives with high purity urea and water together with the configuration of the solution, the solution of urea content of 32.5% (mass fraction). Domestic and foreign manufacturers of heavy-duty diesel engines in most cases, SCR (Selective Catalytic Reduction) technology to meet Euro IV, Euro V motor vehicle emission standards. Select SCR technology vehicles must add urea solution as a catalyst reductant, the vehicle emissions standards. Diesel engine exhaust treatment liquid (commonly known as: automotive urea, urea vehicle, automotive environmental urea) in China, Europe called AdBIUe, in the Americas called DEF, in Brazil called ARLA32.AdBIue by 32.5% high purity ingredients high purity urea and 67.5% deionized water was transparent liquid, with a touch of ammonia odor. If spilled, the water evaporates and the formation of crystals. AdBIue used with SCR (selective catalytic car exhaust after reduction treatment) car systems, trucks, buses and heavy-duty off-road diesel engine vehicles must use to get supplies SCR technology, together with the SCR catalyst will harmful nitrogen oxide emissions from diesel engines converted into harmless water vapor and nitrogen. The main components of the SCR system comprises a catalyst, AdBIue injection device, AdBIue injection apparatus, AdBIue container and AdBIue dose controller. Almost all of Europe, the US and Asia, including China's heavy-duty vehicle manufacturers for vehicles equipped with selective catalytic reduction systems and with AdBIue working fluid, in order to meet the new emission standards for nitrogen oxides (such as Euro IV, Euro V) AdBIue and Under the combined effect of SCR technology, to optimize engine performance and fuel consumption, reduce diesel fuel consumption may reach 6%, significantly reducing costs. The average consumption AdBIue was 5% of the general consumption of diesel, about 1.5 liters highway driving consumption per 100 kilometers. AdBIue only be used with the SCR system configuration engine combination, because it is neither fuel nor fuel additive. AdBIue perform in line with ISO22241, DIN70070 standards within CEFIC regulations and to ensure the effective operation of the SCR system. AdBIue no harm to the environment, and is classified as low-risk body fluids run.