Effect of Inlet Air Preheating of Industrial Burners and Possibility of Pollutant Emission Reduction

The main reason of air pollution in industrial areas such as petrochemical complexes and refineries in Iran is because of improper combustion of fuel in the refinery and petrochemical burners. The most common method for increasing the thermal efficiency of burners is pre-heating of entrance fuel and oxidant of burner. But the main drawback of this method is increasing maximum flame temperature and thus increasing air pollutant emissions. Considering the obvious hazard of nitrous oxides and carbon monoxide in environmental pollution, finding ways to reduce emissions of harmful gases and studying the performance of industrial equipment is important and working on that with proper design and each zone temperature control, redundancy can be harnessed to produce toxic gases. In this study by using computational fluid dynamics of burners the effect of pre-heating the incoming air to a sample burner which is used in refineries has been studied and aims is reaching to answer of this question: Preheating action with regard to environmental pollution is working properly or not. Results by comparing the concentration of species such as CO and NOx are evaluated.