Experimental Study on Combustion Characteristics and NOx Emissions of Pulverized Anthracite Preheated by Circulating Fluidized Bed
文献类型：期刊论文
| 作者 | Wang Jun1,2; Zhu Jian-guo1; Lu Qing-gang1 |
| 刊名 | JOURNAL OF THERMAL SCIENCE
 |
| 出版日期 | 2011-07-01 |
| 卷号 | 20期号:4页码:355-361 |
| 关键词 | circulating fluidized bed preheat pulverized anthracite NOx |
| 英文摘要 | A 30 kW bench-scale rig of pulverized anthracite combustion preheated by a circulating fluidized bed (CFB) was developed. The CFB riser has a diameter of 90 mm and a height of 1,500 mm. The down-fired combustion chamber (DFCC) has a diameter of 260 mm and a height of 3,000 mm. Combustion experiments were carried out using pulverized anthracite with 6.74% volatile content. This low volatile coal is difficult to ignite and burn out. Therefore, it requires longer burnout time and higher combustion temperature, which results in larger NOx emissions. In the current study, important factors that influence the combustion characteristics and NOx emissions were investigated such as excess air ratio, air ratio in the reducing zone, and fuel residence time in the reducing zone. Pulverized anthracite can be quickly preheated up to 800 degrees C in CFB when the primary air is 24% of theoretical air for combustion, and the temperature profile is uniform in DFCC. The combustion efficiency is 94.2%, which is competitive with other anthracite combustion technologies. When the excess air ratio ranges from 1.26 to 1.67, the coal-N conversion ratio is less than 32% and the NOx emission concentration is less than 371 mg/m(3) (@6% O-2). When the air ratio in the reducing zone is 0.12, the NOx concentration is 221 mg/m(3) (@6% O-2), and the coal-N conversion ratio is 21%, which is much lower than that of other boilers. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Thermodynamics ; Engineering, Mechanical |
| 研究领域[WOS] | Thermodynamics ; Engineering |
| 关键词[WOS] | COAL COMBUSTION ; AIR ; TEMPERATURE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000292279000010 |
| 公开日期 | 2015-12-22 |
| 源URL | [http://ir.etp.ac.cn/handle/311046/106086]  |
| 专题 | 工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI） |
| 作者单位 | 1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Graduated Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Jun,Zhu Jian-guo,Lu Qing-gang. Experimental Study on Combustion Characteristics and NOx Emissions of Pulverized Anthracite Preheated by Circulating Fluidized Bed[J]. JOURNAL OF THERMAL SCIENCE,2011,20(4):355-361. |
| APA | Wang Jun,Zhu Jian-guo,&Lu Qing-gang.(2011).Experimental Study on Combustion Characteristics and NOx Emissions of Pulverized Anthracite Preheated by Circulating Fluidized Bed.JOURNAL OF THERMAL SCIENCE,20(4),355-361. |
| MLA | Wang Jun,et al."Experimental Study on Combustion Characteristics and NOx Emissions of Pulverized Anthracite Preheated by Circulating Fluidized Bed".JOURNAL OF THERMAL SCIENCE 20.4(2011):355-361. |
入库方式： OAI收割
来源：工程热物理研究所
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