Emission Control Technologies for Thermal Power Plants

[摘要] Coal thermal power plants are one of the primary sources of artificial air emissions, particularly in a country like India. Ministry of Environment and Forests has proposed draft regulation for emission standards in coal-fired power plants. This includes significant reduction in sulphur-dioxide, oxides of nitrogen, particulate matter and mercury emissions. The first step is to evaluate the technologies which represent the best selection for each power plant based on its configuration, fuel properties, performance requirements, and other site-specific factors. This paper will describe various technology options including: Flue Gas Desulfurization System, Spray Dryer Absorber (SDA), Circulating Dry Scrubber (CDS), Limestone-based Wet FGD, Low NOX burners, Selective Non Catalytic Reduction, Electrostatic Precipitator, Bag House Dust Collector, all of which have been evaluated and installed extensively to reduce SO2, NOx, PM and other emissions. Each control technology has its advantages and disadvantages. For each of the technologies considered, major features, potential operating and maintenance cost impacts, as well as key factors that contribute to the selection of one technology over another are discussed here.

[发布机构] Civil Engineering Department, PIET, Parul University, Vadodara; Gujarat, India^1;Mechanical Department LandT-SandL, Vadodara; Gujarat, India^2

[效力级别] 机械制造

[关键词] Coal-fired power plant;Emission control technologies;Flue gas desulfurization systems;Ministry of environments;Performance requirements;Selective non-catalytic reduction;Spray dryer absorbers;Various technologies