The CFD Modeling of NOx Emission, HiTAC and Heat Transfer in an Industrial Boiler

Abstract

NOx emission, heat transfer, and high temperature air combustion (HiTAC) in a boiler of Mobin Petrochemical Complex, Iran was numerically studied. The comparison between the measured values and the CFD predicted results showed good agreement, which implied that the adopted combustion and NOx formation models are suitable for correctly predicting characteristics of the heat recovery steam generation (HRSG) boiler. The predicted results show that NOx emission within the boiler depends highly on temperature, as well as oxygen concentration. Moreover, the influence of the equivalence ratio at a fixed air mass flow rate on the flame temperature and NOx formation has been investigated.

The authors would like to thank the Iranian Mobin Petrochemical Complex for their assistance in providing operational data. In addition, the authors are very grateful to Soroush Zare and Farzad Razmjoui for their help during this research.