naa a22 4500 510821251 CHVBK 20180411083533.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11814-012-0153-6 doi (NATIONALLICENCE)springer-10.1007/s11814-012-0153-6 Synthesis gas and char production from Mongolian coals in the continuous devolatilization process [Elektronische Daten] [Jong-Soo Bae, Dong-Wook Lee, Se-Joon Park, Young-Joo Lee, Jai-Chang Hong, Choon Han, Young-Chan Choi] Devolatilization of Mongolian coal (Baganuur coal (BC), Shievee Ovoo coal (SOC), and Shievee Ovoo dried coal (SOC-D)) was investigated by using bench-sized fixed-bed and rotary kiln-type reactors. Devolatilization was assessed by comparing the coal's type and dry basis, temperature, gaseous flux, tar formation/generation, devolatilization rate, char yield, heating value, and the components of the raw coal and char. In the fixed bed reactor, higher temperatures increased the rate of devolatilization but decreased char production. BC showed higher rates of devolatilization and char yields than SOC or SOC-D. Each coal showed inversely proportional devolatilization and char yields, though the relation was not maintained between the different coal samples because of their different contents of inherent moisture, ash, fixed carbon, and volatile matter. Higher temperatures led to the formation of less tar, though with more diverse components that had higher boiling points. The coal gas produced from all three samples contained more hydrogen and less carbon dioxide at higher temperatures. Cracking by multiple functional groups, steam gasification of char or volatiles, and reforming of light hydrocarbon gas increased with increasing temperature, resulting in more hydrogen. The water gas shift (WGS) reaction decreased with increasing temperature, reducing the concentration of carbon dioxide. BC and SOC, with retained inherent moisture, produced substantially higher amounts of hydrogen at high temperature, indicating that hydrogen production occurred under high-temperature steam. The continuous supply of steam from coal in the rotary kiln reactor allowed further exploration of coal gas production. Coal gas mainly comprising syngas was generated at 700-800 °C under a steam atmosphere, with production greatest at 800 °C. These results suggest that clean char and high value-added syngas can be produced simultaneously through the devolatilization of coal at lower temperature at atmospheric pressure than the entrained-bed type gasification temperature of 1,300-1,600 °C. Korean Institute of Chemical Engineers, Seoul, Korea, 2012 Mongolia Coal nationallicence Devolatilization nationallicence Syngas nationallicence Char nationallicence Rotary Kiln nationallicence Bae Jong-Soo Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut Lee Dong-Wook Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut Park Se-Joon Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut Lee Young-Joo Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut Hong Jai-Chang Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut Han Choon Department of Chemical Engineering, Kwangwoon University, 447-1, Wolgye-dong, Nowon-gu, 139-701, Seoul, Korea aut Choi Young-Chan Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 321-326 0256-1115 30:2<321 2013 30 11814 https://doi.org/10.1007/s11814-012-0153-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0153-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bae Jong-Soo Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut NATIONALLICENCE 700 1- Lee Dong-Wook Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut NATIONALLICENCE 700 1- Park Se-Joon Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut NATIONALLICENCE 700 1- Lee Young-Joo Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut NATIONALLICENCE 700 1- Hong Jai-Chang Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut NATIONALLICENCE 700 1- Han Choon Department of Chemical Engineering, Kwangwoon University, 447-1, Wolgye-dong, Nowon-gu, 139-701, Seoul, Korea aut NATIONALLICENCE 700 1- Choi Young-Chan Clean Fuel Department, High Efficiency and Clean Energy Research Division, Korea Institute of Energy Research (KIER), 71-2, Jang-dong, 305-343, Yuseong, Daejeon, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 321-326 0256-1115 30:2<321 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer