The effectiveness of a novel coal-igniting-fuel technology and application in a direct current burner
文献类型：期刊论文
| 作者 | Shen, Tao2,3; Song, Minhang4; Huang, Yun4; Zhu, Runru4; Li, Zhengqi2; Yu, Qiang3; Lu, Pisi1; Wang, Minghao3 |
| 刊名 | FUEL
 |
| 出版日期 | 2021-12-15 |
| 卷号 | 306页码:10 |
| ISSN号 | 0016-2361 |
| 关键词 | Coal-fired ignitor Ignition Stable combustion Low load operation Coal burnout |
| DOI | 10.1016/j.fuel.2021.121503 |
| 英文摘要 | As alternative energy sources increase the proportion of intermittent energy supplies in power grids, coal-fired power plants have come to play an important role in flexible peak power regulation. The burner is the core of the pulverized-coal boiler, and so its performance greatly affects the ability to achieve stable combustion at low boiler loads and also determines the load adjustment range. A novel coal-igniting-fuel technology using inter-mediate frequency induction heating has been proposed as a means of obtaining better combustion stability at low and variable loads. This method involves the combustion of a small quantity of coal particles in the ignitor to form a central pilot flame that subsequently ignites the surrounding pulverized coal in the main burner to achieve stable combustion. The present work utilized numerical simulations and full-scale experiments to systematically investigate the coal ignition and combustion characteristics associated with this technology. The numerical re-sults show that coal particles inside the ignitor are rapidly heated and ignited, after which the resulting flame is gathered and accelerated by the flame extension tube, thereby forming a pilot flame near the ignitor outlet. When applied to a direct current (DC) burner, this ignitor is able to ignite the primary coal/air flow in a timely manner to form a second high-temperature zone near the burner nozzle. Compared with the absence of an ignitor, the flame center area appears roughly 1.6 m ahead. In an experiment using a single ignitor, it is found that the induction heating coil can quickly heat coal particles, thereby generating a stable high-temperature heat source within 80 s. The application of this ignitor to a DC burner allows the rapid start of the burner at a low initial ambient temperature, and the load can be adjusted over wide ranges of 17.6% - 100% and 13.6% - 100% when burning Shenhua coal and Blended coal, respectively. The degree of coal burnout is found to gradually improve as the thermal load of the burner is increased, reaching a maximum of approximately 93% at full load. |
| WOS关键词 | PULVERIZED-COAL ; FIRED BOILER ; START-UP ; COMBUSTION ; TEMPERATURE ; EMISSIONS ; MODEL |
| 资助项目 | National Natural Science Foundation of China[52006120] ; China Postdoctoral Science Foundation[2019M660633] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000702855900003 |
| 资助机构 | National Natural Science Foundation of China ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/50277]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Zhengqi |
| 作者单位 | 1.RMT Inc, Madison, WI 53717 USA 2.Harbin Inst Technol, Sch Energy Sci & Engn, 92 West Dazhi St, Harbin 150001, Peoples R China 3.Harbin Boiler Co Ltd, Harbin 150046, Peoples R China 4.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen, Tao,Song, Minhang,Huang, Yun,et al. The effectiveness of a novel coal-igniting-fuel technology and application in a direct current burner[J]. FUEL,2021,306:10. |
| APA | Shen, Tao.,Song, Minhang.,Huang, Yun.,Zhu, Runru.,Li, Zhengqi.,...&Wang, Minghao.(2021).The effectiveness of a novel coal-igniting-fuel technology and application in a direct current burner.FUEL,306,10. |
| MLA | Shen, Tao,et al."The effectiveness of a novel coal-igniting-fuel technology and application in a direct current burner".FUEL 306(2021):10. |
入库方式： OAI收割
来源：过程工程研究所
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