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http://dx.doi.org/10.14478/ace.2017.1020

Study of Drying Characteristics of Low Rank Coal in a Pressurized Micro-riser  

Gwak, In Seop (Department of Resources and Energy Engineering, Chonbuk National University)
Gwak, You Ra (Department of Resources and Energy Engineering, Chonbuk National University)
Kim, Ye Bin (Department of Resources and Energy Engineering, Chonbuk National University)
Lee, See Hoon (Department of Resources and Energy Engineering, Chonbuk National University)
Publication Information
Applied Chemistry for Engineering / v.28, no.3, 2017 , pp. 313-317 More about this Journal
Abstract
With the continuous increase of energy demand, low-grade coal is regarded as one of new energy sources. However, due to the high water content, the utilization efficiency of low-grade coal is not good to be used in recent conversion plants. Therefore, it requires a drying process to lower the water content in low-grade coals. Although a variety of drying experiments were conducted, drying characteristics in accordance with the pressure change has not been progressed. In this study, the flash drying characteristics of low grade coal with high moisture content (21.5 wt%) were determined in a pressurized micro-riser. The effect of operation conditions such as pressure (1-40 bar), dryer temperature ($200-600^{\circ}C$), and tube length (2-6 m) on drying ratios were investigated.
Keywords
micro-riser; drying; low grade coal; pressurized flash dryer;
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Times Cited By KSCI : 2  (Citation Analysis)
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