Based on the primaryheater model and the assistant model, the universal heater mathematics model of the software was deduced and the universal computing model of the whole software was founded.
The primary factors are filter cake moisture content, impurity content in cake, purge gas flow, residence time, holdup volume, the distance among steam tubes and the temperature of heater plate.
Various causes of corrosion occurred in the primary urea separation heater were analyzed in this article. Based on the analysis, the method to solve the problem was provided.