Investigation on Influence of Wet FGD to Reduction of SOx from the Flue Gases due to Combustion of Mazut in Boilers

Resumo

Due to the drop in gas pressure and the reduction of the gas quota, some of boilers are forced to use Mazut. The emission of these pollutants results in environmental degradation and endangering human health. On the other hand, toxic contaminations in the air combine with atmospheric precipitation and cause acid rain, and thus their damaging effects increase and their effects are greenhouse gas and global warming. Reducing of air pollutions which are due to combustion of Mazut fuel is one of the essential requirements of the boilers to prevent the environmental damages. In order to reduce the hazardous SOx pollutant due to combustion of typical liquid fuel-Mazut in boilers, In this paper, the study of influence of wet FGD system on reducing the SOx caused by the combustion of Mazut fuel at Boiler has been carried out. This study performed both technical and economical. The efficiency of laboratory scale wet FGD system is studied in this work. A wet FGD system is designed and fabricated and behavior of flue gas in output duct is simulated. In this work, the experiments are performed without trays to measure the minimum efficiency of wet FGD on Sox reduction in boiler condition. Results indicate that using this system without the trays, SOx pollutants are reduced by 80.34%. Also, economic assessment the establishment of wet FGD show the additional cost of 0.674 cent per kilowatt of power that is appropriate amount in return for its environmental benefits.