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http://dx.doi.org/10.14478/ace.2011.22.4.429

Characteristics of RDF Char Combustion in a Bubbling Fluidized Bed  

Kang, Seong-Wan (School of Environmental Engineering, University of Seoul)
Kwak, Yeon-Ho (Environmental Research Team, R&D Institute, Kolon E&C)
Cheon, Kyoung-Ho (Environmental Research Team, R&D Institute, Kolon E&C)
Park, Sung Hoon (Department of Environmental Engineering, Sunchon National University)
Jeon, Jong-Ki (Department of Chemical Engineering, Kongju National University)
Park, Young-Kwon (School of Environmental Engineering, University of Seoul)
Publication Information
Applied Chemistry for Engineering / v.22, no.4, 2011 , pp. 429-432 More about this Journal
Abstract
The feasibility of applications of the char obtained from a gasification process of municipal-waste refuse derived fuel (RDF) as an auxiliary fuel was evaluated by combustion experiments. The higher heating value of the RDF char was 3000~4000 kcal/kg and its chlorine content was below the standard requirement demonstrating its potential as an auxiliary fuel. In the combustion exhaust gas, the maximum $NO_x$ and $SO_2$ concentrations were 240 ppm and 223 ppm, respectively. If an aftertreatment is applied, it is possible to control their concentrations low enough to meet the air pollutant emission standard. The HCl concentration was relatively high indicating that a care should be taken for HCl emission from the combustion of RDF. Based on the temperature distribution within the reactor, the concentration change of $O_2$ and $CO_2$, and the amount and the loss on ignition of solid residue, it was inferred that the combustion reaction was the most reliable when the excess air ratio of 1.3 was used.
Keywords
refuse derived fuel (RDF); char; auxiliary fuel; combustion characteristics;
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