The qualified AdBlue® is a high-purity transparent liquid composed of 32.5% high-purity urea and 67.5% deionized water. It has a light ammonia smell and is suitable for all Euro IV and Euro V emission diesel engine with SCR system. The fertilizer urea prilled will cause the catalyst poisoning and damage parts of SCR tail gas processors by its excessive biurea , mechanical impurities ...
AdBlue Aqueous urea solution is alkaline with feature of non-toxic , non-pollutiing and non-flammable. AdBlue® Aqueous urea solution has special requirements for storage materials and storage conditions ,because of its alkaline characteristics. (1) The effect of storage temperature on AdBlue DEF: AdBlue® requires a storage temperature of about -5 to 25 ℃, it should be avoid sunlight and hi...
Misunderstanding 1 ：Using agricultural urea instead of industrial urea for AdBlue® AdBlue® has strict ratio requirements which are basically composed of high-purity urea and deionized water and the ratio is strictly controlled. One of the criteria for quality is the control of impurities. There are many impurities such as particulate matter, metal ions and minerals in agricultural urea and...
1. The urea content directly effect the catalytic efficiency and freezing point of AdBlue®. In SCR system, the urea content in AdBlue® is one of the key factors. Too high or too low urea content can't improve the conversion efficiency of NOx, and it will cause ammonia to escape. At the same time, the urea content directly affects the catalytic efficiency of NOx and the freezing point of Ad...
Refilling the AdBlue tank is not a do-it-yourself task. Although it is possible to purchase the urea solution at the retailer, it is generally available only through a dealership or service shop. The systems are designed with a capacity of several gallons which transforms into several thousands of miles. Under normal vehicle operating conditions, the AdBlue® tank needs to be refilled only duri...
There are three reasons for the blockage of urea crystallization in AdBlue® production machine. Here are three main reasons for the blockage ; I. Atomization effect or failure of the nozzle SCR system can be divided into two types: air-free type and air-assisted type. Generally, the working pressure of air-assisted urea injection is relatively high, so it may occur that the nozzle valve needle...
At present, two technical solutions are adopted to solve the problem of diesel exhaust emissions. One is SCR technology , another is EGR+DPF. Principle of EGR (Exhaust Gas Recirculation): The technology introduces engine exhaust gas into the intake pipe to reduces the oxygen concentration entering the cylinder and controls the combustion speed as well as lowers the combustion t...
The SCR/Urea Solution is aimed to apply the stricter emission regulations for Vehicles or heavy machineries with diesel engines. The particulate matter and nitric oxide are the main sources of pollution coming out from the exhaust system, and there are two main after treatment technics worldwide, the SCR and the EGR+DEF. The SCR is mainly used in Euro and Asia, but also the US since 2010. As...
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Sammi Sun
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