CO2 and H2O gasification kinetics of a coal char in the presence of methane

doi:10.1021/ef8000949

QIBEBT-IR > 热化学转化研究组

	CO2 and H2O gasification kinetics of a coal char in the presence of methane
	Sun, Zhi-qiang 1,2,3; Wu, Jin-hu1,4 ; Zhang, Dongke3
	2008-07-01
发表期刊	ENERGY & FUELS
卷号	22 期号:4 页码:2160-2165
摘要	The kinetics Of CO2 and H2O gasification of a Chinese coal char in the presence of methane has been studied using a thermogravimetric analyzer (TGA) in the temperature range from 1173 to 1273 K. It was observed that the rate of carbon conversion increased with an increasing temperature and decreased with an increasing CH4 concentration. The rate of carbon conversion during the gasification of the char experienced a maximum without the presence of methane but decreased continuously with carbon conversion in the presence of methane. Carbon deposition from CH4 cracking reduced the overall rate of carbon conversion during gasification, but this effect was reduced as the temperature and concentration Of CO2 or H2O were increased. A gas-solid reaction shrinking core model was developed and applied to the char-CH4-CO2/H2O systems. The experimental results were used to determine the kinetic parameters. The model predictions compared favorably to the measured data. The overall carbon conversion rate has been shown to be a combination of carbon gasification, by CO2 or H2O, respectively, and methane cracking.; The kinetics Of CO2 and H2O gasification of a Chinese coal char in the presence of methane has been studied using a thermogravimetric analyzer (TGA) in the temperature range from 1173 to 1273 K. It was observed that the rate of carbon conversion increased with an increasing temperature and decreased with an increasing CH4 concentration. The rate of carbon conversion during the gasification of the char experienced a maximum without the presence of methane but decreased continuously with carbon conversion in the presence of methane. Carbon deposition from CH4 cracking reduced the overall rate of carbon conversion during gasification, but this effect was reduced as the temperature and concentration Of CO2 or H2O were increased. A gas-solid reaction shrinking core model was developed and applied to the char-CH4-CO2/H2O systems. The experimental results were used to determine the kinetic parameters. The model predictions compared favorably to the measured data. The overall carbon conversion rate has been shown to be a combination of carbon gasification, by CO2 or H2O, respectively, and methane cracking.
文章类型	Article
学科领域	热化学转化
WOS标题词	Science & Technology ; Technology
DOI	10.1021/ef8000949
关键词[WOS]	CARBON
收录类别	SCI
语种	英语
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000257793200005
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/404
专题	热化学转化研究组
作者单位	1.Chinese Acad Sci, Inst Coal Chem, Taiyuan 030001, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Univ Western Australia, Ctr Petr Fuels & Energy, Crawley, WA 6009, Australia 4.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Sun, Zhi-qiang,Wu, Jin-hu,Zhang, Dongke. CO2 and H2O gasification kinetics of a coal char in the presence of methane[J]. ENERGY & FUELS,2008,22(4):2160-2165.
APA	Sun, Zhi-qiang,Wu, Jin-hu,&Zhang, Dongke.(2008).CO2 and H2O gasification kinetics of a coal char in the presence of methane.ENERGY & FUELS,22(4),2160-2165.
MLA	Sun, Zhi-qiang,et al."CO2 and H2O gasification kinetics of a coal char in the presence of methane".ENERGY & FUELS 22.4(2008):2160-2165.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
CO2 and H2O Gasifica（343KB）			开放获取	CC BY-NC-SA	浏览下载