Characterizing potassium release under turbulent conditions during biomass stream combustion: A comparative analysis of different pretreatments
文献类型：期刊论文
| 作者 | Sun C(孙岑) ; Wei XL(魏小林)
|
| 刊名 | FUEL PROCESSING TECHNOLOGY
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 250页码:107881 |
| 关键词 | Potassium Biomass Stream combustion Tubular flame burner Ignition Kinetics |
| ISSN号 | 0378-3820 |
| DOI | 10.1016/j.fuproc.2023.107881 |
| 英文摘要 | The release rate of potassium during biomass combustion significantly influences slagging, fouling, and corrosion in industrial equipment. Given that dispersed biomass stream combustion predominantly occurs under turbulent ambient conditions, we investigate the combustion characteristics and potassium release behavior of rice husk and its derived fuels (water-washed, torrefied, and char) under high-turbulent conditions in a tubular flame burner (TFB). Tunable diode laser absorption spectroscopy (TDLAS) technology, combined with high-speed imaging, was employed to online monitor the release of atomic potassium (K(g)) and the ignition characteris-tics of biomass stream combustion. The results showed that the rice husk stream followed a joint hetero-homogeneous ignition mechanism, whereas the biochar stream underwent heterogeneous ignition in the TFB. The K(g) peak, occurring ahead of the maximum spontaneous radiation position, was observed at approximately 25 mm from the injectors, with a concentration of 0.067 ppmv during rice husk stream combustion. In contrast, the peak K(g) concentrations for biochar and torrefied rice husk were delayed, reaching 0.026 ppmv and 0.021 ppmv, respectively, compared to the raw biomass samples combusted in the TFB. Distinct differences in acti-vation energy for K(g) release were identified, with pulverized rice husk exhibiting the lowest activation energy (75.53 kJ/mol) and rice husk-char showing the highest (94.20 kJ/mol). |
| 分类号 | 一类 |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001024735600001 |
| 资助机构 | National Science Foundation of China [51736010] |
| 其他责任者 | Wei, XL (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Kinet, Beijing 100190, Peoples R China. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/92574]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.{Sun, Cen, Wei, Xiaolin} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.{Sun, Cen, Wei, Xiaolin} Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Kinet, Beijing 100190, Peoples R China 3.{Sun, Cen} North China Elect Power Univ, Dept Energy Power & Mech Engn, Baoding 071003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun C,Wei XL. Characterizing potassium release under turbulent conditions during biomass stream combustion: A comparative analysis of different pretreatments[J]. FUEL PROCESSING TECHNOLOGY,2023,250:107881. |
| APA | 孙岑,&魏小林.(2023).Characterizing potassium release under turbulent conditions during biomass stream combustion: A comparative analysis of different pretreatments.FUEL PROCESSING TECHNOLOGY,250,107881. |
| MLA | 孙岑,et al."Characterizing potassium release under turbulent conditions during biomass stream combustion: A comparative analysis of different pretreatments".FUEL PROCESSING TECHNOLOGY 250(2023):107881. |
入库方式： OAI收割
来源：力学研究所
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