Performance and Optimization of Solid Oxide Fuel Cell Using Low-Concentration Coal Mine Methane
), Abstract
CH4 concentration of underground drainage coal mine methane is rather low, which is of the explosion risk and difficult to be used. Therefore, a safe and high-efficiency power generation method of low concentration coal mine methane (LC-CMM) was proposed based on the solid oxide fuel cell (SOFC). The deoxygenation and methane enrichment experiment based on the pressure swing adsorption (PSA) was conducted to eliminate the explosion risk of LC-CMM, the large-scale SOFC single cell experiment using the LC-CMM was carried out, and the multi-physics coupling model of SOFC was developed. The results show that the CH4 concentration can be increased by 1.36 times, the deoxygenation ratio can reach 84.5% through the PSA experiment, and the produced gas can meet the requirement of safe and efficient power generation of SOFC. The power density of large-scale single cell using LC-CMM can reach 110.2 mW/cm2, but the anodic carbon deposition occurs after the long-term discharging, thus causing the SOFC performance degradation. The results of numerical simulation show that the decrease of discharging voltage, the increase of volume ratio between O2 and CH4 of fuel and the decrease of fuel inlet rate can decrease the carbon deposition, but reducing the power generation performance of SOFC.
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References
LIU Chenglin, ZHU Jie, CHE Changbo, et al. Nat Gas Ind (in Chinese), 2009, 29(11): 130–132.
ZHU Qingzhong, YANG Yanhui, ZUO Yinqing, et al. Nat Gas Ind (in Chinese), 2020, 40(1): 55–60.
QIN Yong, SHEN Jian, SHI Rui. J China Coal Soc (in Chinese), 2022, 47(1): 371–387.
WANG X X, ZHOU F B, LING Y H, et al. Overview and outlook on utilization technologies of low concentration coal mine methane[J]. Energ Fuels, 2021, 35: 15398–15423.
NISBET E G, DLUGOKENCKY E J, BOUSQUET P. Methane on the rise—Again[J]. Science, 2014, 343(31): 493–495.
MILLER S M, MICHALAK A M, DETMERS R G, et al. China’s coal mine methane regulations have not curbed growing emissions[J]. Nat Commun, 2019, 10(1): 1–8.
YANG Ying, QU Donglei, LI Ping, et al. CIESC J (in Chinese), 2018, 69(11): 4518–4529.
NIE B S, PENG C, GONG J, et al. Explosion characteristics and energy utilization of coal mine ultra-lean methane[J]. Combust Theor Model, 2021, 25 (1): 73-95.
ZHOU F B, XIA T Q, WANG X X, et al. Recent developments in coal mine methane extraction and utilization in China: A review[J]. J Nat Gas Sci Eng, 2016, 31: 437–458.
LI Lei. Mining Safety & Environmental Protection (in Chinese), 2014, 41(2): 86–89, 96.
KANG Jiandong, LAN Bo, ZOU Weifeng. Coal Sci Technol (in Chinese), 2015, 43(2): 136–139.
DELGADO J A, ÁGUEDA V I, GARCIA J, et al. Simulation of the recovery of methane from low-concentration methane/nitrogen mixtures by concentration temperature swing adsorption[J]. Sep Purif Technol, 2019, 209: 550–559.
ZHANG Junmei, LIU Qiang, WANG Zhiqiang. Energy and Energy Conservation (in Chinese), 2020, 6: 81–83.
GÜR T M. Comprehensive review of methane conversion in solid oxide fuel cells: Prospects for efficient electricity generation from natural gas[J]. Prog Energ Combust Sci, 2016, 54: 1–64.
DU Zhihong, LI Yuanyuan, ZHAO Hailei, et al. J Chin Ceram Soc, 2021, 49(1): 9–13.
LING Yihan, HAN Xu, YANG Yang, et al. J Chin Ceram Soc, 2022, 50(1): 219–225.
WANG Ziming, TAN Ting, SONG Chen, et al. Materials Research and Application (in Chinese), 2021, 15(2): 94–101.
LI T, YANG Y, WANG X X, et al. Enhance coking tolerance of high-performance direct carbon dioxide-methane solid oxide fuel cells with an additional internal reforming catalyst[J]. J. Power Sources, 2021, 512: 230533.
WANG X X, WEI K W, KANG J H, et al. Experimental and numerical studies of a bifunctional proton conducting anode of ceria-based SOFCs free from internal shorting and carbon deposition[J]. Electrochim Acta, 2018, 264: 109–118.
YUE W X, LI Y F, ZHENG Y. Enhancing coking resistance of Ni/YSZ electrodes: In situ characterization, mechanism research, and surface engineering[J]. Nano Energ, 2019, 62: 64–78.
BAE Y S, LEE C H. Sorption kinetics of eight gases on a carbon molecular sieve at elevated pressure[J]. Carbon, 2005, 43: 95–107.
MATSUZAKI Y, YASUDA I. Electrochemical oxidation of H2 and CO in a H2–H2O–CO–CO2 system at the interface of a Ni–YSZ cermet electrode and YSZ electrolyte[J]. J Electrochem Soc, 2000, 147(5), 1630–1635.
MA R S, XU B, ZHANG X, et al. Catalytic partial oxidation (CPOX) of natural gas and renewable hydrocarbons/oxygenated hydrocarbons—A review[J]. Catal Today, 2019, 338, 18–30.
JANARDHANAN V M, DEUTSCHMANN O. CFD analysis of a solid oxide fuel cell with internal reforming: Coupled interactions of transport, heterogeneous catalysis and electrochemical processes[J]. J Power Sources, 2006, 162: 1192–1202.
AKHTAR N, DECENT S P, KENDALL K. Numerical modelling of methane-powered micro-tubular, single-chamber solid oxide fuel cell[J]. J Power Sources, 2010, 195: 7796–7807.
ABASHAR M E E. Coupling of steam and dry reforming of methane in catalytic fluidized bed membrane reactors[J]. Int J Hydrogen Energ, 2004, 29: 799–808.
GUVELIOGLU G H, STENGER H G. Computational fluid dynamics modeling of polymer electrolyte membrane fuel cells[J]. J Power Sources, 2005, 147: 95–106.
XU H R, CHEN B, TAN P, et al. Modeling of all-porous solid oxide fuel cells with a focus on the electrolyte porosity design[J]. Appl Energ, 2019, 235: 602–611.
SHI Wangying, JIA Chuan, ZHANG Yongliang, et al. Acta Phys Chim Sin (in Chinese), 2019, 35 (5): 509–516.
WANG X X, MA Z K, ZHANG T. Charge-transfer modeling and polarization DRT analysis of proton ceramics fuel cells based on mixed conductive electrolyte with the modified anode-electrolyte interface[J]. ACS Appl Mater Inter, 2018, 10(41): 35047–35059.
WANG Y Z, YOSHIBA F, KAWASE M, et al. Performance and effective kinetic models of methane steam reforming over Ni/YSZ anode of planar SOFC[J]. Int J Hydrogen Energ, 2009, 34: 3885–3893.
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