CO2 and H2O gasification kinetics of a coal char in the presence of methane
文献类型：期刊论文
| 作者 | Sun, Zhi-qiang1,2,3; Wu, Jin-hu1,4 ; Zhang, Dongke3
|
| 刊名 | ENERGY & FUELS
 |
| 出版日期 | 2008-07-01 |
| 卷号 | 22期号:4页码:2160-2165 |
| 中文摘要 | 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. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Technology |
| 学科主题 | 热化学转化 |
| 类目[WOS] | Energy & Fuels ; Engineering, Chemical |
| 研究领域[WOS] | Energy & Fuels ; Engineering |
| 关键词[WOS] | CARBON |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000257793200005 |
| 公开日期 | 2011-09-09 |
| 源URL | [http://ir.qibebt.ac.cn//handle/337004/404]  |
| 专题 | 青岛生物能源与过程研究所_热化学转化事业部 |
| 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. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
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