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| 1 | Investigation of drying characteristics of low rank coal of bubbling fluidization through experiment using lab scale显示文摘Lignite is a low rank coal which is evenly distributed throughout the world and accounts for 45% of the total coal reserves. As it has a higher moisture content, its moisture content must be reduced in order to utilize it in power plant. In the present work, experiments on lignite has been done using a lab scale fluidized-bed reactor. Drying lignite through fluidized-bed reactor has a higher drying rate because there is good contact between particles and gas in the fluidized-bed reactor. Fluidized-bed drying can use air of 1.5 times of the minimum fluidizing velocity performance at bubbling fluidized-bed. Experiments have been performed on coal particle sizes of 0.3–1 mm, 1–1.18 mm and 1.18–2.8 mm, with operating temperatures being 100°C, 125°C and 150°C, respectively. It is found that fluidization has a higher drying rate due to the heat transfer rate through air velocity. Hence, moisture content in lignite can be dried to a desired value with a time interval of 10 min. The experiment through fluidized-bed reactor is expected to be useful for saving money and time. | DoMan JEON TaeJin KANG HyungTaek KIM SiHyun LEE SangDo KIM | 2011 | Science China(Technological Sciences)2011，54，7： | 2 |
| 2 | Ash-free coal as fuel for direct carbon fuel cell显示文摘This work describes the performance of the direct carbon fuel cell(DCFC)fuelled by ash-free coal.Employing coal in the DCFC might be problematic,mainly because of the ash deposition after the cell reactions.In the study,the carbonaceous ash-free component of coal is obtained,which is then evaluated as the DCFC fuel and compared with raw coal,active carbon,carbon black,and graphite.The electrolyte-supported SOFC structure is adapted to build the DCFC.The DCFC based on the ash-free coal fuel exhibits good performance with regard to the maximum power density,day-by-day measurements,and durability at continuous run.When the carbon fuels are internally gasified to H2 and CO,the power density is generally much improved,compared to N2 pyrolysis environment.The power generation is most likely related to the concentration of pyrolyzed gases as well as the electrochemical reactivity of the solid carbon. | LEE Injae JIN Sunmi CHUN Donghyuk CHOI Hokyung LEE Sihyun LEE Kibong YOO Jiho | 2014 | Science China Chemistry2014，57，7： | 1 |
| 3 | Clinical effects of the levonorgestrel-releasing intrauterine device in patients with adenomyosis显示文摘 | SiHyun Cho Anna Nam HyeYeon Kim DooByung Chay KiHyun Park Dong Je Cho YongWon Park ByungSeok Lee | 2008 | American Journal of Obstetrics and Gynecology2008，，4： | 1 |
| 4 | Clinical effects of the levonorgestrel-releasing intrauterine device in patients with adenomyosis显示文摘 | SiHyun Cho Anna Nam HyeYeon Kim | 2008 | Am J Obstet Gynecol2008，198，4： | 1 |
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