Steam re-gasification properties and kinetics of coal char fines derived from fluidized bed gasifier

JING Xu-liang; WANG Zhi-qing; FANG Yi-tian

Volume 41 Issue 04

Apr. 2013

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2013 > 41(04): 400-406

JING Xu-liang, WANG Zhi-qing, FANG Yi-tian. Steam re-gasification properties and kinetics of coal char fines derived from fluidized bed gasifier[J]. Journal of Fuel Chemistry and Technology, 2013, 41(04): 400-406.

Citation:

JING Xu-liang, WANG Zhi-qing, FANG Yi-tian. Steam re-gasification properties and kinetics of coal char fines derived from fluidized bed gasifier[J]. Journal of Fuel Chemistry and Technology, 2013, 41(04): 400-406.

Citation:

PDF( 633 KB)

Steam re-gasification properties and kinetics of coal char fines derived from fluidized bed gasifier

1.
Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2012-08-09
Rev Recd Date: 2012-09-21
Publish Date: 2013-04-30

Abstract

Abstract

The steam gasification behavior and kinetics of coal char fines derived from fluidized bed gasifier were investigated by TGS-2 thermogravimetric analyzer. Their physical and chemical properties were also compared with the corresponding coal chars and demineralized char fines. The results show that the gasification reactivity of char fines increase with increasing temperature. Compared with the coal char from pyrolysis, the char fine has a larger surface area and leads to a higher gasification reactivity. The reactivity of different coal char fines are also affected by their carbon crystalline structure and ash content. Based on this, the gasification reactions are described by the shrinking core model and the kinetic parameters are obtained, so as to provide some theoretical guides for the gasification of coal char fines.
- coal char fines,
- steam gasification,
- pore structure,
- gasification kinetics

FullText(HTML)

References(14)

References

屈利娟. 流化床煤气化技术的研究进展[J]. 煤炭转化, 2007, 30(2): 81-85. (QU Li-juan. Process of research in the fluidized bed coal gasification technology[J]. Coal Conversion, 2007, 30(2): 81-85.)

许世森, 张东亮, 任永强. 大规模煤气化技术[M]. 北京: 化学工业出版社, 2006. (XU Shi-seng, ZHANG Dong-liang, REN Yong-qiang. Large-scale coal gasification technology[M]. Beijing: Chemical Industry Press, 2006.)

KELEBOPILE L, SUN R, LIAO J. Fly ash and coal char reactivity from thermo-gravimetric (TGA) experiments[J]. Fuel Process Technol, 2011, 92(6): 1178-1186.

GU J, WU S, WU Y, LI Y, GAO J . Differences in gasification behaviors and related properties between entrained gasifier fly ash and coal char[J]. Energy Fuels, 2008, 22(6): 4029-4033.

房倚天, 吴晋沪, 张建民, 王洋. 流化床气化炉飞灰气化反应性的研究:Ⅱ飞灰气化动力学的研究[J]. 燃料化学学报, 1996, 24(3): 225-232. (FANG Yi-tian, WU Jin-hu, ZHANG Jian-min, WANG Yang. Study on gasification reactivity of fly ash from a fluidized bed gasifier :Ⅱ study on gasification reaction kinetics of fly ash[J]. Journal of Fuel Chemistry and Technology, 1996, 24(3): 225-232.)

刘武标, 刘德昌, 米铁, 陈汉平, 张世红. 流化床水煤气炉飞灰反应性的实验研究[J]. 中国电机工程学报, 2003, 23(9): 189-192. (LIU Wu-biao, LIU De-chang, MI Tie, CHEN Han-pin, ZHANG Shi-hong. Experimental research on reactivity of fly ash from a fluidized bed water-gas gasifier[J]. Proceedings of the CSEE, 2003, 23(9): 189-192.)

ZHANG L, HUANG J, FANG Y, WANG Y. Gasification reactivity and kinetics of typical Chinese anthracite chars with stream and CO₂[J]. Energy Fuels, 2006, 20(3): 1201-1210.

TAKARADA T, TAMAI Y, TOMITA A. Reactivities of 34 coals under stream gasification[J]. Fuel, 1985, 64(10): 1438-1442.

乌晓江, 张忠孝, 朴桂林, 小林信介, 森滋勝, 板谷義紀. 高灰熔点煤高温下煤焦CO₂/水蒸气气化反应特性的实验研究[J]. 中国电机工程学报, 2007, 27(32): 24-27. (WU Xiao-jiang, ZHANG Zhong-xiao, PIAO Gui-lin, KOBAYASHI N, MORI S, ITATYA Y. Experimental study on gasification reaction characteristics of Chinese high ash fusion temperature coal with CO₂ and steam at elevated temperature[J]. Proceeding of the CSEE, 2007, 27(32): 24-27.)

任海军, 张永奇, 房倚天, 黄戒介, 王洋. 褐煤焦中的矿物质对气化动力学的影响[J]. 化学工程, 2010, 38(10): 132-135. (REN Hai-jun, ZHANG Yong-qi, FANG Yi-tian, HUANG Jie-jie, WANG-Yang. Effect of minerals in lignite char on kinetics of stream gasification [J]. Chemical Engineering (China), 2010, 38(10): 132-135)

OCHOA J, CASSANELLO M C, BONELLI P R, CUKIERMAN A L. CO₂ gasification of Argentinean coal chars: A kinetic characterization[J]. Fuel Process Technol, 2001, 74(3): 161-176.

许慎奇, 周志杰, 杨帆, 于广锁, 于遵宏. 快速热解温度下的淮南煤焦与水蒸气气化反应的研究[J]. 高校化学工程学报, 2008, 22(6): 947-953. (XU Shen-qi, ZHOU Zhi-jie, YANG Fan, YU Guang-suo, YU Zun-hong. Effects of pyrolysis temperature on stream gasification of Huainan char[J]. Journal of Chemical Engineering of Chinese Universities, 2008, 22(6): 947-953.)

李庆峰, 房倚天, 张建民, 王洋, 时铭显, 孙国刚. 气化活性与孔比表面积的关系[J]. 煤炭转化, 2003, 26(3): 45-48. (LI Qing-feng, FANG Yi-tian, ZHANG Jian-min, WANG Yang, SHI Ming-xian, SUN Guo-gang. Relationship of gasification activity and pore structure[J]. Coal Conversion, 2003, 26(3): 45-48.)

ZHUO Y, MESSENBÖCK R, COLLOT A G, MEGARITIS A, PATERSON N, DUGWELL D R, KANDIYOTI R. Conversion of coal particles in pyrolysis and gasification: Comparison of conversions in a pilot-scale gasifier and bench-scale test equipment[J]. Fuel, 2000, 79(7): 793-802.

Relative Articles

Supplements(0)

Cited By

Proportional views