Zhenjiang Zhenjiang diesel exhaust treatment liquid vehicle exhaust treatment liquid from the car where there sell enforce full implementation by 柴油国 Ⅳ standard, there are nearly one year. However, given the large amount of motor vehicle emission pollution, haze strong background, many domestic cities "hold back any longer lonely," National IV standards for diesel supply in advance. Recently, the Shenzhen station for at country Ⅳ diesel, the first to promote the use in Guangdong province. With Beijing, Shanghai, Shenzhen and other cities take the lead in practicing Ⅳ emission standards is expected that other cities will follow quickly, directly affect the domestic automotive exhaust gas demand will accelerate the release. In addition to automobile exhaust treatment device and catalyst products, shrouded in haze, PM2.5 is often under the "burst table" of the environment, pollution and nitrogen oxide emissions are closely related to vehicle urea concern. What urea car is? What? How the product quality? How industry status and prospects? Reporters interviewed. Is not a traditional agricultural products Single point of view from the name, the car should be classified as urea fertilizer, agricultural products, a class of pesticides, but it is not. "Refers to the urea concentration of 32.5% ultra-pure water and the solvent is an aqueous solution of urea, raw materials for urea crystals and ultrapure water." In the car industry analyst with urea prospective net Prospect Industrial Research Institute analyst Hai Hung told reporters, heavy trucks, buses and other diesel vehicles to achieve the national IV emission standards on exhaust gas treatment should be used and for the SCR (Selective Catalytic Reduction) system, and this system must use a urea solution to the exhaust of nitrogen oxide processing. Therefore, vehicle urea solution became diesel reached the national IV emission standards essential products. It is reported that the mainstream diesel engine manufacturing enterprises, such as Yuchai, Cummins, Weichai, have basically reached a consensus, SCR will be the main direction of diesel emissions technology upgrades. Operation principle is the exhaust from the turbine into the exhaust pipe out of the exhaust pipe is installed metering urea injection means injecting aqueous urea, urea solution and nitrogen oxides in the exhaust gas redox reaction in the SCR reactor tank, generate nitrogen and water discharge. Promulgated in accordance with the country's fourth and fifth stages of the national vehicle fuel standards from the factory after the October 2013 car diesel heavy-duty vehicles, they are equipped with a urea vehicle exhaust purification device for added vehicle urea. Some users to reduce the cost, will direct the SCR system on the card after removed, until the inspection and then put something to cope with what. In the industry view, although demolition SCR system can save the cost of urea vehicle, if not a long time but the system will be oxidized, nozzles are easily clogged, resulting in a value of several million system scrapped, more harm than good. Budding industry or meet explosive growth "in the country has just started selling, the market fledgling stage, are sprouting." Sichuan a car salesman named Hu urea production, said the vehicle as far as the diesel engine, to be national IV emission standards When fully implemented, we have to use the car with urea, to meet emission standards. According to Hai Hung, since the national IV standard has not been in the country to impose, only Beijing, Shenzhen, Shanghai, Guangzhou, Xi'an, Hangzhou, Nanjing and other pilot cities, the public transportation system requirements must be added to the vehicle urea, leading industry market is not open. Data show that the current annual consumption of urea domestic car is about 10,000 tons, accounting for the world's automotive urea solution consumption of 1%. Development of the industry in its infancy, but the market demand is huge. Beijing, for example, from the end of 2007 and gradually enable the use of SCR catalytic technology buses to March 2012 has been more than 7000 vehicles reached the national IV standard, hundreds of cars to the country V standard buses into use, vehicle urea annual demand of about 6,000 tons. Coupled with the growing concern of motor vehicle pollution, vehicle exhaust tolerant society gradually reached its limits, as particulate matter pollution "big" bear the brunt of emissions reduction for diesel vehicles. The supply side, China's automotive urea solution product development started late, only a few research institutions and enterprises of small batch production. "Entering the country IV stage, the domestic automotive urea 'blue ocean' market will be gradually opened, the estimated annual demand is expected to reach 4 million - 7 million tons." Hai Hung expects this confidence. Need to beware of fake and shoddy products Reporters learned that individual enterprises illegal use of agricultural urea urea production vehicle, vehicle exhaust system easily lead crystal, can not achieve the purpose of reducing emissions. According to industry experts, automotive industrial urea urea by re-purification system, in use since the SCR catalyst carrier prone to metal ion poisoning and lose catalytic effect, and are thus formulated automotive urea solution must be used in the electronics industry one super water, and then need to calculate the ratio, the amount of soft water and urea purified in a container by mixing ingredients dissolved to obtain vehicle urea solution. "Vehicle urea production process is simple, low-tech, and therefore the level of domestic and foreign production process is not much difference." In the Hai Hung opinion, given the low barriers to entry, in order to ensure urea vehicle product quality, you first need to beware of fake and shoddy products. The standards have been blocked by the above vulnerabilities. Domestic vehicle urea was first standard in some places, such as Beijing, Shenzhen, Shanghai and other places have established standards; March 18, 2013, China Society of Automotive Engineers released the industry standard "car with urea solution specification (SAE-ChinaJ2901 -2013) "; the same year on July 1, vehicle urea solution national standards" diesel engine NOx reducing agent aqueous urea solution (AUS32) "(GB 29518-2013) formally implemented, to reflect product quality is good or bad biuret , aldehydes and other impurities, metal ions and other indicators of specific provisions to regulate the production.