Chemisorption and physisorption of fine particulate matters on the floating beads during Zhundong coal combustion
文献类型：期刊论文
| 作者 | Zhao J(赵京)2,3; Zhang YF(张玉峰)2,3; Wei XL(魏小林)2,3; Li T(李腾)3; Qiao Y(乔宇)1; Zhao J(赵京) ; Li T(李腾); Qiao Y(乔宇); Wei XL(魏小林)
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| 刊名 | FUEL PROCESSING TECHNOLOGY
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 200页码:10 |
| ISSN号 | 0378-3820 |
| 关键词 | Floating beads Fine particulate matter Pulverized coal combustion Mineral elements Chemisorption Physisorption |
| DOI | 10.1016/j.fuproc.2019.106310 |
| 通讯作者 | Wei, Xiaolin(xlwei@imech.ac.cn) |
| 英文摘要 | Floating beads rich in silica-aluminum oxide are hollow glass microspheres that can be obtained from fly ash by flotation. Floating beads have the advantages of high yield, low cost and easy access in the power plants or industrial kilns and are used as the sorbent for reducing the fine particulate matter (PM) emissions during pulverized coal combustion in this work. The pulverized coals mixed with floating beads are burned in an electrically heated drop-tube furnace at 1573 K. The size distribution and yield of PM are analyzed by an electrical low pressure impactor (LPI). The results indicate that the internal mineral elements, especially Na/K, Ca, and S, form a large amount of PM during pulverized coal combustion and floating beads can efficiently reduce PM formation via chemisorption and physisorption. With floating beads addition, the yield of ultrafine mode particles (PM0.5), mainly consisted of Na/K and S, decreases by 55.76%, and the yield of central mode particles (PM0.5-7), mainly consisted of Ca, Fe and Si, decreases by 21.7%. The surface reaction (chemisorption) between mineral vapors and sorbent particles reduces the PM0.5 emissions, and PM0.5+ can be reduced by the particles colliding and coalescing (physisorption), resulting in aluminosilicates on the surface of the sorbents. The results gained from characterization tests show that floating beads have more active sites and free silicon dioxides due to the broken Si-O and Al-O bonds after high-temperature calcination, thereby promoting the capture of mineral vapors such as alkali metals. |
| 分类号 | 一类 |
| WOS关键词 | PULVERIZED-COAL ; ASH DEPOSITION ; PARTICLE-SIZE ; FLY-ASH ; KAOLIN ; REDUCTION ; EMISSIONS ; SODIUM ; ALKALI ; PERFORMANCE |
| 资助项目 | National Natural Science Foundation of China[51736010] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000514024600002 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Wei, Xiaolin |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/81547]  |
| 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.Huazhong Univ Sci & Technol, State Key Lab Coal Combust, Wuhan 430074, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhao J,Zhang YF,Wei XL,et al. Chemisorption and physisorption of fine particulate matters on the floating beads during Zhundong coal combustion[J]. FUEL PROCESSING TECHNOLOGY,2020,200:10. |
| APA | 赵京.,张玉峰.,魏小林.,李腾.,乔宇.,...&Wei XL.(2020).Chemisorption and physisorption of fine particulate matters on the floating beads during Zhundong coal combustion.FUEL PROCESSING TECHNOLOGY,200,10. |
| MLA | 赵京,et al."Chemisorption and physisorption of fine particulate matters on the floating beads during Zhundong coal combustion".FUEL PROCESSING TECHNOLOGY 200(2020):10. |
入库方式： OAI收割
来源：力学研究所
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