Modelling of NO_x emissions in tangential coal fired boiler Part 1 - Conventional boiler

In a power generation unit, the dynamic nature of a tangential coal fired boiler integrating with the complex NO_x formation mechanism leads to a major difficulty for the prediction of NO_x emission levels under different operating conditions. This paper suggests a simple method to tackle the problem. A model was developed by considering NO_x formation mechanisms, burner configuration and air flow distribution. With the aid of the data obtained from operation, an empirical equation was developed for the prediction of NO_x emission levels of a conventional tangential coal fired boiler that is not equipped with any de-NO_x facility.