1 results about "Urea decomposition" patented technology

The invention discloses a method and device for evaluating the urea crystallization risk based on a steady-state working condition. According to the method for evaluating the urea crystallization risk based on the steady-state working condition, a urea crystallization risk coefficient eta is evaluated through three coefficients, including a quality coefficient eta m, a temperature coefficient eta t and an efficiency coefficient eta e. The urea crystallization risk coefficient is obtained through comprehensive calculation from the three aspects of quality, temperature and structure, the crystallization risk is quantified through a mathematical method, the urea crystallization threshold value can be obtained through calibration, the urea decomposition detailed mechanism is fused into the model, the chemical reaction path is expressed in the form of a mathematical equation, the influence of an SCR mixer on crystallization is quantified from the angle of SCR conversion efficiency, the urea crystallization risk coefficient is not a fixed formula and can be calibrated according to a bench steady-state test, and the method is deduced based on a urea crystallization basic principle and a mathematical formula and is high in reliability.