Continuous experiment regarding hydrogen production by coal/CaO reaction with steam (I) gas products

被引:72
作者
Lin, SY [1 ]
Harada, M [1 ]
Suzuki, Y [1 ]
Hatano, H [1 ]
机构
[1] Ctr Coal Utilizat, Shinjyuku Ku, Tokyo 1600015, Japan
关键词
hydrogen; energy; coal; carbon dioxide;
D O I
10.1016/j.fuel.2003.10.030
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
Coal/CaO powder mixtures were continuously supplied into a reactor to react with steam at high pressure and high temperature. At 923 K and 5.0 MPa, the gas produced from the reaction of Taiheiyo coal/CaO with steam consisted of mainly H-2, with smaller amounts of CH4, C2H4, C2H6 and CO2. Increasing the pressure enhanced H-2 production and CH4 decomposition. Above 3 MPa, the gas from the reaction contained <3% CO and CO, Under high pressure, CaO reacted with steam to form Ca(OH)(2) which absorbed CO2. The H-2/CH4 ratio in the product gases from three different rank coals Datong coal (bituminous), Taiheiyo coal (sub-bituminous), Wyoming coal (lignite) followed the order Datong > Taiheiyo > Wyoming. The Wyoming and Datong coals produced less H-2 than the Taiheiyo coal. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:869 / 874
页数:6
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