A new method for ash melthod thermo-analysis based on mineral quantity
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- 作者：YongChun Zhao (1) (2)
JunYing Zhang (1)
XinYu Shao (2)
ChuGuang Zheng (1) - 关键词：mineral quantitative thermo ; analysis ; melting ; ash deposit
- 刊名：Chinese Science Bulletin
- 出版年：2011
- 出版时间：April 2011
- 年：2011
- 卷：56
- 期：10
- 页码：1043-1047
- 全文大小：632KB
- 参考文献：1. Vorres K S. Mineral Matter and Ash in Coal. Washington DC: American Chemical Society, 1986 CrossRef
2. Bryers R W. Fireside slagging, fouling, and high-temperature corrosion of heat-transfer surface due to impurities in steam-raising fuels. Prog Energy Combust Sci, 1996, 22: 29鈥?20 CrossRef
3. Zbogar A, Frandsen F J, Jensen P A, et al. Heat transfer in ash deposits: A modelling tool-box. Prog Energy Combust Sci, 2005, 31: 371鈥?21 CrossRef
4. Hansen L A, Frandsen F J, Dam-Johansen K, et al. Quantification of fusion in ashes from solid fuel combustion. Thermochim Acta, 1999, 326: 105鈥?17 CrossRef
5. Hansen L A, Frandsen F J, Dam-Johansen K, et al. Characterization of ashes and deposits from high-temperature coal-straw co-firing. Energy Fuels, 1999, 13: 803鈥?16 CrossRef
6. Zbogar A, Frandsen F, Jensen P A, et al. Shedding of ash deposits. Prog Energy Combust Sci, 2009, 35: 31鈥?6 CrossRef
7. Kondratiev A, Jak E. Predicting coal ash slag flow characteristics (viscosity model for the Al2O3-CaO-FeO鈥?SiO2 system). Fuel, 2001, 80: 1989鈥?000 CrossRef
8. Fukuda K, Iwata T, Yoshida H. Melt differentiation and crystallization of clinker minerals in a CaO-SiO2-Al2O3-Fe2O3 pseudoquaternary system. Cem Concr Res, 2010, 40: 167鈥?70 CrossRef
9. Gupta S, Gupta R, Bryant G, et al. Characterization of ash deposition and heat transfer behavior of coals during combustion in a pilot-scale facility and full-scale utility. Energy Fuels, 2009, 23: 2570鈥?575 CrossRef
10. Wall T F. Mineral matter transformations and ash deposition in pulverised coal combustion. Symp (Int) Combust, 1992, 24: 1119鈥?126 CrossRef - 作者单位：YongChun Zhao (1) (2)
JunYing Zhang (1)
XinYu Shao (2)
ChuGuang Zheng (1)
1. State Key Laboratory of Coal Combustion, Huazhong University of Science & Technology, Wuhan, 430074, China
2. School of Mechanical Science & Engineering, Huazhong University of Science & Technology, Wuhan, 430074, China - ISSN：1861-9541
文摘
Ash deposition has a major impact on safe and economic operation of coal-fired boiler. A new method for ash melting thermo-analysis based on X-ray diffraction mineral quantitative analysis was developed; the classical thermal analysis theory was used to describe the dynamic behavior of ash melting. The low-temperature ash melting process curve was acquired. Compared with the conventional method of ash fusibility, the new method of ash melting characteristic curve reflects the ash melting dynamic better. The ash melting characteristic curve reveals the multi-stage reaction process of minerals melting, explains the gradual increase of mineral melting process in theory.