A study on the direct catalytic steam gasification of coal for the bench-scale system

被引:7
作者
Kang, Tae-Jin [1 ]
Park, HyeJung [2 ]
Namkung, Hueon [3 ]
Xu, Li-Hua [2 ]
Park, Jung-Hyun [1 ]
Heo, Iljeong [1 ]
Chang, Tae-Sun [1 ]
Kim, Beom Sik [4 ]
Kim, Hyung-Taek [2 ]
机构
[1] Korea Res Inst Chem Technol, Greenhouse Gas Resources Res Grp, Carbon Resources Inst, 141 Gajeongro, Yuseong 34114, Daejeon, South Korea
[2] Ajou Univ, Grad Sch, Dept Energy Syst Res, Suwon 16499, South Korea
[3] East China Univ Sci Tech, Inst Clean Coal Technol, 130 Meilong Rd, Shanghai 200237, Peoples R China
[4] Korea Res Inst Chem Technol, Carbon Resources Inst, Energy Vector Res Grp CO2, 141 Gajeongro, Yuseong 34114, Daejeon, South Korea
关键词
Low Rank Coal; Fluidized-bed Reactor; Direct Catalytic-steam Gasification; K2CO3; FLUIDIZED-BED REACTOR; YIELD HYDROGEN-PRODUCTION; POTASSIUM CARBONATE; WATER-VAPOR; CO2; GASIFICATION; TRANSITION-METAL; MINERAL MATTER; GAS-PRODUCTION; BROWN-COAL; ALKALI;
D O I
10.1007/s11814-017-0167-1
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Various techniques have been developed to increase the efficiency of coal gasification. The use of a catalyst in the catalytic-steam gasification process lowers the activation energy required for the coal gasification reaction. Catalytic-steam gasification uses steam rather than oxygen as the oxidant and can lead to an increased H-2/CO ratio. The purpose of this study was to evaluate the composition of syngas produced under various reaction conditions and the effects of these conditions on the catalyst performance in the gasification reaction. Simultaneous evaluation of the kinetic parameters was undertaken through a lab-scale experiment using Indonesian low rank coals and a bench-scale catalytic-steam gasifier design. The composition of the syngas and the reaction characteristics obtained in the lab- and bench-scale experiments employing the catalytic gasification reactor were compared. The optimal conditions for syngas production were empirically derived using lab-scale catalytic-steam gasification. Scale-up of a bench-scale catalytic-steam gasifier was based on the lab-scale results based on the similarities between the two systems. The results indicated that when the catalytic-steam gasification reaction was optimized by applying the K2CO3 catalyst to low rank coal, a higher hydrogen yield could be produced compared to the conventional gasification process, even at low temperature.
引用
收藏
页码:2597 / 2609
页数:13
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