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高温弱还原气氛下煤灰中矿物质的定量研究

马志斌 白进 李文 程芳琴

马志斌, 白进, 李文, 程芳琴. 高温弱还原气氛下煤灰中矿物质的定量研究[J]. 燃料化学学报, 2016, 44(6): 641-647.
引用本文: 马志斌, 白进, 李文, 程芳琴. 高温弱还原气氛下煤灰中矿物质的定量研究[J]. 燃料化学学报, 2016, 44(6): 641-647.
MA Zhi-bin, BAI Jin, LI Wen, CHENG Fang-qin. Quantitative analysis of mineral matters in coal ash under reducing atmosphere at high temperature[J]. Journal of Fuel Chemistry and Technology, 2016, 44(6): 641-647.
Citation: MA Zhi-bin, BAI Jin, LI Wen, CHENG Fang-qin. Quantitative analysis of mineral matters in coal ash under reducing atmosphere at high temperature[J]. Journal of Fuel Chemistry and Technology, 2016, 44(6): 641-647.

高温弱还原气氛下煤灰中矿物质的定量研究

基金项目: 

国家自然科学基金 21506121

国家重点基础研究发展规划 973计划, 2010CB227003

和山西省煤基科技攻关计划 MD-2014-03

详细信息
  • 中图分类号: TQ53

Quantitative analysis of mineral matters in coal ash under reducing atmosphere at high temperature

More Information
    Corresponding author: Tel: 0351-7018813, Fax: 0351-7018813, E-mail: cfangqin@163.com
  • 摘要: 利用X射线衍射 (XRD) 研究了1100-1500℃条件下弱还原性气氛下胜利褐煤和高平无烟煤煤灰中矿物质的变化, 利用Siroquant定量软件计算了高温灰样中矿物质和无定形相的含量, 结合化学成分分析, 利用差减法计算了煤灰中无定形相的化学组成。结果表明, 利用XRD、Siroquant软件并结合化学成分分析, 可以对煤灰中的矿物质及无定形相进行定量分析, 并可获得不同温度下无定形相的化学组成变化。不同温度范围内煤灰中无定形相的形态不同, 当温度低于1100℃时, 煤灰中无定形相主要是未结晶或结晶度较差的氧化物, 而随着温度的升高, 矿物质发生熔融并形成了玻璃态物质, 此时的无定形相则是以熔融的硅酸盐和硅铝酸盐为主。煤灰的硅铝比越低, 高温下越容易生成莫来石。
  • 图  1  不同温度下SL煤灰的XRD谱图

    1: quartz (SiO2); 2: anhydrite (CaSO4); 3: hematite (Fe2O3); 4: sapphirine (Al3.80Mg3.15Fe1.05(Si1.75Al4.25O20)); 5: anorthite (CaAl2Si2O8); 6: mullite (Al6Si2O13)

    Figure  1  XRD patterns of SL coal ash at different temperatures

    图  2  SL煤灰中矿物质的含量随温度的变化

    Figure  2  Variation of mineral matters content in SL coal ash with temperature

    图  3  不同温度下GP煤灰的XRD谱图

    1: quartz (SiO2); 2: anhydrite (CaSO4); 3: hematite (Fe2O3); 4: lime (CaO); 5: illite (KAl4Si2O9(OH)3); 6: anorthite (CaAl2Si2O8); 7: mullite (Al6Si2O13)

    Figure  3  XRD patterns of GP coal ash at different temperatures

    图  4  GP煤灰中矿物质的含量随温度的变化

    Figure  4  Variation of mineral matters content in GP coal ash with temperature

    图  5  SL煤灰中主要氧化物在晶相和无定形相中含量随温度的变化

    : crystalline; : amorphous

    Figure  5  Variation of the main oxides content in crystalline and amorphous phases of SL coal ash with temperature

    图  6  GP煤灰中主要氧化物含量在晶相和无定形相中含量随温度的变化

    : crystalline; : amorphous

    Figure  6  Variation of the main oxides content in crystalline and amorphous phases of GP coal ash with temperature

    表  1  实验煤样的工业分析和元素分析

    Table  1  Proximate and ultimate analyses of coal samples

    SampleProximate analysis wad/% Ultimate analysis wad/%
    M A VCHO*NS
    SL12.7328.0931.37 67.297.2523.441.220.80
    GP1.7324.038.92 90.133.554.561.250.46
    *:by difference
    下载: 导出CSV

    表  2  实验煤样的灰成分分析

    Table  2  Ash composition of coal samples

    SampleContentw/%
    SiO2Al2O3Fe2O3CaOMgOTiO2Na2OK2OSO3P2O5
    SL60.8222.893.863.822.551.131.101.821.400.13
    GP51.2233.443.295.040.991.130.571.042.030.23
    下载: 导出CSV

    表  3  实验煤样的灰熔融温度

    Table  3  Ash fusion temperatures of coal samples

    SampleTemperature t/℃
    DTSTHTFT
    SL1306135313571372
    GP14811550 >1550 >1550
    DT: deformation temperature; ST: soften temperature;
    HT: hemisphere temperature; FT: flow temperature
    下载: 导出CSV
  • [1] 吴加奇, 许慎启, 周志杰, 于广锁, 王辅臣.高温下渣熔融对煤焦-CO2气化反应特性的影响[J].燃料化学学报, 2012, 40(1):21-28. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract17856.shtml

    WU Jia-qi, XU Shen-qi, ZHOU Zhi-jie, YU Guang-suo, WANG Fu-chen. Effects of molten slag on coal gasification reaction with CO2 at elevated temperature[J]. J Fuel Chem Technol, 2012, 40(1):21-28. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract17856.shtml
    [2] IRFAN M F, USMAN M R, KUSAKABE K. Coal gasification in CO2 atmosphere and its kinetics since 1948:A brief review[J]. Energy, 2011, 36 (1):12-40. doi: 10.1016/j.energy.2010.10.034
    [3] 唐黎华, 王建中, 吴勇强, 朱学栋, 蒋德军, 朱子彬.低灰熔点煤的高温气化反应性能[J].华东理工大学学报, 2003, 29(4):341-345. http://www.cnki.com.cn/Article/CJFDTOTAL-HLDX200304005.htm

    TANG Li-hua, WANG Jian-zhong, WU Yong-qiang, ZHU Xue-dong, JIANG De-jun, ZHU Zi-bin. Gasification reactivity of coal with lower ash melting point at high temperature[J]. J East China Univ Sci Technol, 2003, 29(4):341-345. http://www.cnki.com.cn/Article/CJFDTOTAL-HLDX200304005.htm
    [4] 白进, 李文, LI Chun-zhu, 白宗庆, 李保庆.高温下煤中矿物质对气化反应的影响[J].燃料化学学报, 2009, 37(2):134-138. doi: 10.1016/S1872-5813(09)60014-1

    BAI Jin, LI Wen, LI Chu-zhu, BAI Zong-qing, LI Bao-qing. Influences of mineral matter on high temperature gasification of coal char[J]. J Fuel Chem Technol, 2009, 37(2):134-138. doi: 10.1016/S1872-5813(09)60014-1
    [5] 吴诗勇, 顾菁, 李莉, 吴幼青, 高晋生.高温下灰熔融对神府煤焦反应活性的影响[J].煤炭转化, 2006, 29(4):41-45. http://www.cnki.com.cn/Article/CJFDTOTAL-MTZH200604010.htm

    WU Shi-yong, GU Jing, LI Li, WU You-qing, GAO Jin-sheng. Effects of ash fusion on reaction activity of ShenFu chars at elevated temperatures[J]. Coal Conv, 2006, 29(4):41-45. http://www.cnki.com.cn/Article/CJFDTOTAL-MTZH200604010.htm
    [6] BANDOPADHYAY A K. Determination of quartz content for Indian coals using an FTIR technique[J]. Int J Coal Geol, 2010, 81(1):73-78. doi: 10.1016/j.coal.2009.10.018
    [7] MADSEN I C, FINNEY R J, FLANN R C, FROST M T, WILSON B W. Quantitative analysis of high-alumina refractories using X-ray powder diffraction data and the Rietveld method[J]. J Am Ceram Soc, 1991, 74(3):619-624. doi: 10.1111/jace.1991.74.issue-3
    [8] ESTEVE V, CARDA J, REVENTOS M M, AMIGO J M. Quantitative X-ray diffraction phase analysis of airborne particulate collected by a cascade impactor sampler using the Rietveld full-pattern fitting method[J]. Powder Diffr, 1997, 12(3):151-154. doi: 10.1017/S0885715600009623
    [9] TAYLOR J C. Computer programs for standardless quantitative analysis of minerals using the full power diffraction profile[J]. Powder Diffr, 1991, 6(1):2-9. doi: 10.1017/S0885715600016778
    [10] WARD C R, TAYLOR J C, MATULIS C E, DALE L S. Quantification of mineral matter in the Argonne Premium coals using interactive Rietveld-based X-ray diffraction[J]. Int J Coal Geol, 2001, 46(s2/4):67-82. https://www.researchgate.net/publication/248517332_Quantification_of_mineral_matter_in_the_Argonne_Premium_Coals_using_interactive_Rietveld-based_X-ray_diffraction
    [11] WARD C R, TAYLOR J C, COHEN D R. Quantitative mineralogy of sandstones by X-ray diffractometry and normative analysis[J]. J Sediment Res, 1999, 69:1050-1062. doi: 10.2110/jsr.69.1050
    [12] WARD C R, FRENCH D. Determination of glass content and estimation of glass composition in fly ash using quantitative X-ray diffractometry[J]. Fuel, 2006, 85:2268-2277. doi: 10.1016/j.fuel.2005.12.026
    [13] 马志斌, 白宗庆, 白进, 李文, 郭振兴.高温弱还原气氛下高硅铝比煤灰变化行为的研究[J].燃料化学学报, 2012, 40(3):279-285. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract17897.shtml

    MA Zhi-bin, BAI Zong-qing, BAI Jin, LI Wen, GUO Zhen-xing. Evolution of coal ash with high Si/Al ratio under reducing atmosphere at high temperature[J]. J Fuel Chem Technol, 2012, 40(3):279-285. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract17897.shtml
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出版历程
  • 收稿日期:  2016-01-25
  • 修回日期:  2016-03-28
  • 网络出版日期:  2021-01-23
  • 刊出日期:  2016-06-10

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