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http://dx.doi.org/10.9713/kcer.2014.52.5.657

Characteristics of Coal Slurry Gasification under Partial Slagging Operating Condition  

Lee, Jin Wook (Plant Engineering Division, Institute for Advanced Engineering)
Chung, Seok Woo (Plant Engineering Division, Institute for Advanced Engineering)
Lee, Seung Jong (Plant Engineering Division, Institute for Advanced Engineering)
Jung, Woohyun (Plant Engineering Division, Institute for Advanced Engineering)
Byun, Yong Soo (Plant Engineering Division, Institute for Advanced Engineering)
Hwang, Sang Yeon (Plant Engineering Division, Institute for Advanced Engineering)
Jeon, Dong Hwan (Plant Engineering Division, Institute for Advanced Engineering)
Ryu, Sang Oh (Plant Engineering Division, Institute for Advanced Engineering)
Lee, Ji Eun (Plant Engineering Division, Institute for Advanced Engineering)
Jeong, Ki Jin (Plant Engineering Division, Institute for Advanced Engineering)
Kim, Jin Ho (Plant Engineering Division, Institute for Advanced Engineering)
Yun, Yongseung (Plant Engineering Division, Institute for Advanced Engineering)
Publication Information
Korean Chemical Engineering Research / v.52, no.5, 2014 , pp. 657-666 More about this Journal
Abstract
Coal gasification technology is considered as next generation clean coal technology even though it uses coal as fuel which releases huge amount of greenhouse gas because it has many advantages for carbon capture. Coal or pet-coke slurry gasification is very attractive technology at present and in the future because of its low construction cost and flexibility of slurry feeding system in spite of lower efficiency compared to dry feeding technology. In this study, we carried out gasification experiment using bituminous coal slurry sample by integrating coal slurry feeding facility and slurry burner into existing dry feeding compact gasifier. Especially, our experiment was conducted under fairly lower operation temperature than that of existing entrained-bed gasifier, resulting in partial slagging operation mode in which only part of ash was converted to slag and the rest of ash was released as fly ash. Carbon conversion rate was calculated from data analysis of collected slag and ash, and then cold gas efficiency, which is the most important indicator of gasifier performance, was estimated by carbon mass balance method. Fairly high performance considering pilot-scale experiment, 98.5% of carbon conversion and 60.4% of cold gas efficiency, was achieved. In addition, soundness of experimental result was verified from the comparison with chemical equilibrium composition and energy balance calculations.
Keywords
Coal Slurry; Gasification; Partial Slagging; Compact Gasifier; Performance Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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