Methane combustion by moving bed fuel reactor with Fe2O3/Al2O3 oxygen carriers

被引:54
作者
Ku, Young [1 ]
Wu, Hsuan-Chih [1 ]
Chiu, Ping-Chin [1 ]
Tseng, Yao-Hsuan [1 ]
Kuo, Yu-Lin [2 ]
机构
[1] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei, Taiwan
[2] Natl Taiwan Univ Sci & Technol, Dept Mech Engn, Taipei, Taiwan
关键词
Chemical looping combustion; Iron-based oxygen carriers; Methane combustion; Moving bed reactor; CHEMICAL-LOOPING COMBUSTION; IRON-OXIDE; NATURAL-GAS; SYNGAS; REACTIVITY; PARTICLES; SYSTEM;
D O I
10.1016/j.apenergy.2013.06.014
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Fe2O3/Al2O3 composite oxygen carriers were prepared for chemical looping combustion (CLC) with methane in a lab-scale moving bed fuel reactor provided with reasonable crush strength, reactivity and recyclability. Carbon formation was observed during the combustion process in the empty bed at 900 degrees C through methane decomposition reaction, and was enhanced for experiments conducted with increased retention time. Carbon formation was obviously reduced for experiments conducted in the moving bed fuel reactor with oxygen carrier-to-fuel ratio (phi) higher than 1.14. The oxygen carriers that moving out of the moving bed reactor were composed of mainly FeO and FeAl2O4, characterized by X-ray diffraction (XRD) analysis. The formation of FeO and FeAl2O4 indicated that further utilization of oxygen in iron-based oxygen carriers can be achieved by moving bed operation. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1909 / 1915
页数:7
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