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http://dx.doi.org/10.4491/KSEE.2014.36.2.103

Characteristics of Acidic Gas Emissions from Combustion with Preblending of Coal and Sludge  

Shim, Sung-Hoon (Environmental and Energy Research Division, Korea Institute of Machinery & Materials)
Jeong, Sang-Hyun (Environmental and Energy Research Division, Korea Institute of Machinery & Materials)
Min, Hyo-Ki (Department of Environmental Engineering, Chungbuk National University)
Lee, Sang-Sup (Department of Environmental Engineering, Chungbuk National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.36, no.2, 2014 , pp. 103-108 More about this Journal
Abstract
Using dried sludge as a secondary fuel of a coal-fired power plant is proposed as an alternative option for sludge disposal. Because elemental contents of sludge are different from those of coal, different levels of acidic gas emissions are expected from the co-combustion of sludge with coal. In this study, sludge samples were obtained from 7 sewage treatment plants in Korea. Each sludge sample was combusted together with coal in a lab-scale combustor, and the concentrations of nitrogen oxides ($NO_x$), sulfur dioxide ($SO_2$), hydrogen chloride (HCl), chlorine ($Cl_2$) in the flue gas were analyzed. Compared to the combustion of coal only, $NO_x$ concentration was slightly higher in the flue gas from the co-combustion of coal and sludge. $SO_2$ emission increased with the combustion of sludge due to the higher content of sulfur in sludge than in coal. For most of the tested samples, the concentrations of HCl and $Cl_2$ were varied depending on the chlorine content in the sludge sample.
Keywords
Coal; Sludge; Renewable Fuel; Combustion; Acidic Gas;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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