NOx Emission Analysis in Flue Gas of Coal Fired Thermal Power Station and it’s Control Measure

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Abstract

The growth and development of any country is measured by the electricity generation which paves way for industrialization and mechanization. To meet the ever increasing demand, the best way to generate consistent power is setting up of large thermal power plants. India is rich with coal reserves and is very cheap when compared with other fuels, hence coal is used as the primary fuel for power generation in India. Thermal generation using coal accounts for 65% of the total power produced. Power plants in India uses different qualities of coal, different combustion technologies and operating conditions. Flue Gases emitted from coal fired thermal stations consists of CO2,(Carbon-di-oxide),SOx (Oxides of Sulphur), NOx (Oxides of Nitrogen), PM (Particulate matter) along with carbonaceous material, soot and Fly ash. These gaseous pollutants are considered as environmental burden which ultimately results in smog formation, formation of acid rain, eutrophication and global warming and has to be controlled and regulated to be within the permissible limits as stipulated by MOEF &CC (Ministry of Environmental Forest and Climate Change). This project describes about the analysis of NOx Emission in Flue Gas of Coal fired thermal stations and the measures to control the NOx emission within the permissible limits for the existing thermal power plants by modifying the combustion technology without affecting the power generation. The primary measure to control NOx emission is achieved by in - combustion control by modifying the conventional burner with the Low Nox Burner combined with Over Fire Air which bring about 45-80% NOx emission reduction, which is cost effective and could be implemented with minimum down time for installation. The application of Low Nox Burner with Over Fire Air Technology in the existing thermal power plant has reduced the emission of NOx to a considerable extent and to meet the norms within minimum period without affecting the power generation.

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APA

NOx Emission Analysis in Flue Gas of Coal Fired Thermal Power Station and it’s Control Measure. (2019). International Journal of Innovative Technology and Exploring Engineering, 8(12S), 1195–1201. https://doi.org/10.35940/ijitee.k1324.10812s19

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