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http://dx.doi.org/10.5855/ENERGY.2017.26.4.118

Numerical Study on the Characteristics of Combustion and Emission in Pulverized Coal-fired Boiler for Using High Moisture Coal and Dry Coal  

Ahn, Seok-Gi (Department of Mechanical Engineering, Pusan National University)
Kim, Kang-Min (Department of Mechanical Engineering, Pusan National University)
Kim, Gyu-Bo (Pusan Clean Coal Center)
Lee, Si-Hyun (Korea Institute of Energy Research)
Jeon, Chung-Hwan (Department of Mechanical Engineering, Pusan National University)
Publication Information
Journal of Energy Engineering / v.26, no.4, 2017 , pp. 118-126 More about this Journal
Abstract
This study was performed to investigate the characteristics of combustion and emissions in pulverized coal fired boiler for using high moisture coal and dry coal through computational fluid dynamics(CFD). We validated this boiler model with performance data of the boiler. The results of flow characteristics showed that climbing speed of gases was increased as blending ratio of high moisture coal was increased. It can decrease a residence time of fuel in the furnace. And it influence coal combustion. The coal burnout and NOx generation in burner level were decreased as increasing blending ratio of high moisture coal. The gas temperature and NOx formation were increased after OFA level due to coal burnout delay.
Keywords
High Moisture Coal; CFD; Coal Combustion; Pulverized Coal-fired Boiler;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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