Abstracto

Reduction of NOX in Diesel Engine by Using Zinc Oxide and Barium Chloride as a Catalyst

Mohamed Raffic.A

Diesel engines are widely used in many areas like automobiles, locomotive marine engines power generations etc., due to its high power output and thermal efficiency. Even though the diesel engines give more benefits, the human discomforts caused by the pollutant emission of these engines have to be considered. The major pollutant emissions of the diesel engines are particulate matters, smoke and the oxides of nitrogen (NOx). Out of these pollutant emissions, the oxides of nitrogen are considered as the most harmful pollutants to the human health. Emissions of nitrogen oxides (NOx) contribute seriously to air pollution, which is a major environmental problem. Emissions of NOx react with moisture in the air to form nitric acid, contributing to soil and water acidification in sensitive areas. There are many techniques being tried to control NOx emission from diesel engine. In this project, the emissions controlled by after treatment of exhaust gases. In the after treatment method, urea solution is dipped in steel mesh. Then the zinc oxide is coated in steel mesh. The zinc oxide acts as catalyst and converts the oxides of nitrogen (NO and NO2) into free nitrogen (N2) and water vapour (H2O).