Citation: YU Sheng-hui, ZHANG Cheng, ZHANG Xiao-pei, ZHOU An-li, XU Hao, FANG Qing-yan, CHEN Gang. Effect of combustion heat on release and transformation of the sodium during Zhundong coal ash-forming process[J]. Journal of Fuel Chemistry and Technology, ;2018, 46(4): 391-398. shu

Effect of combustion heat on release and transformation of the sodium during Zhundong coal ash-forming process

State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China

Corresponding author: ZHANG Cheng, chengzhang@mail.hust.edu.cn
Received Date: 26 December 2017
Revised Date: 28 February 2018

Fund Project: The project was supported by National Natural Science Foundation of China (51676076), National Program of International Science and Technology Cooperation (2015DFA60410) and Graduates' Innovation Fund of HUST (5003120003)National Natural Science Foundation of China 51676076National Program of International Science and Technology Cooperation 2015DFA60410Graduates' Innovation Fund of HUST 5003120003

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As a typical Zhundong coal, Wucaiwan coal was chosen as the object of the investigation. The combustion ash with coal sample and the reheated ash with ashing sample at 400℃ were prepared in a muffle furnace. K-type thermocouple was used to measure the temperature, XRF and XRD were used to investigate the composition of ash, and the sequential chemical extraction was used to examine the modes of occurrence of Sodium. The results show that the combustion ash and the reheated ash have marked differences in composition and melting points, sodium content in the reheated ash is higher than that in the combustion ash and the melting temperature of the reheated ash is lower than that in the combustion ash. With the increase of temperature, the total content of sodium decreases obviously, the water-soluble and ammonia-soluble sodium decreases rapidly, while the HCl soluble sodium increases first and then decreases and the insoluble sodium increases. The sodium released is mainly soluble. Heating temperature and time have an influence on the releasing of sodium, and the combustion reaction leads to the temperature on particle surface higher than surrounding temperature by 200℃, which is the main cause of releasing more sodium.
- Zhundong coal,
- sodium release,
- ash composition,
- combustion reaction
1. [1]
  CHEN Chuan, ZHANG Shou-yu, LIU Da-hai, GUO Xi, DONG Ai-xia, XIONG Shao-wu, SHI Da-zhong, LÜ Jun-fu. Existence form of sodium in high sodium coals from Xinjiang and its effect on combustion process[J]. J Fuel Chem Technol, 2013,41(7):832-838.
2. [2]
  GUO Shuai, JIANG Yun-feng, XIONG Qing-an, SONG Shuang-shuang, ZHAO Jian-tao, FANG Yi-tian. Release and transformation behaviors of sodium species with different occurrence modes during pyrolysis of Zhundong coal[J]. J Fuel Chem Technol, 2017,45(3):1-8.
3. [3]
  ZHANG Xiao-pei, ZHANG Cheng, YU Sheng-hui, LI Xin, FENG Xiao-fei, MA Ya-fei, CHEN Gang. Changes of Zhundong coal properties by hydrothermal upgrading and its impacts on CO₂ gasification[J]. J Fuel Chem Technol, 2017,45(10):1185-1190. doi: 10.3969/j.issn.0253-2409.2017.10.005
4. [4]
  SUN Xin, ZHAO Bin, WANG Zi-bing, LIANG Jing-long, LI Hui. Effect of H₂O(g) and SO₂(g) on the volatilization and transformation of sodium during Xinjiang high-sodium coal combustion[J]. J Fuel Chem Technol, 2017,45(10):1178-1184. doi: 10.3969/j.issn.0253-2409.2017.10.004
5. [5]
  QI Xiao-bin, SONG Guo-liang, SONG Wei-jian, LÜ Qing-gang. Mineral transformation behavior of Zhundong coal during circulating fludized bed gasification[J]. J Combust Sci Technol, 2017,23(1):29-35.
6. [6]
  WANG Zhi-hua, LI Qian, LIU Jing, HUANG Zhen-yu, ZHOU Zhi-jun, ZHOU Jun-hu, CEN Ke-fa. Occurrence of alkali metals in Zhundong coal and its migration during pyrolysis process[J]. Proc CSEE, 2014,34(S1):130-135.
7. [7]
  CHAKRAVARTY S, MOHANTY A, BANERJEE A, TRIPATHY R, MANDAL G K, BASARIYA M R, SHARMA M. Composition, mineral matter characteristics and ash fusion behavior of some Indian coals[J]. Fuel, 2015,150:96-101. doi: 10.1016/j.fuel.2015.02.015
8. [8]
  CHEN Guan-yi, WANG Qin, YAN Bei-bei. Mobility and enrichment of trace elements in a coal-fired circulating fluidized bed boiler[J]. J Fuel Chem Technol, 2013,41(9):1050-1055.
9. [9]
  CHEN H, PAN P, JIAO J, WANG Y, ZHAO Q. Low-temperature ash deposition and dewpoint corrosion of a coal-fired travelling grate boiler[J]. Appl Therm Eng, 2017,117:752-761. doi: 10.1016/j.applthermaleng.2017.02.052
10. [10]
  MO Xin, CAI Run-xia, LU Jun-fu. Analysis of non-uniform distribution of gas-solid flow in the 600MW(e) CFB boiler based on the non-uniform distribution of returning ash temperature[J]. Proc CSEE, 2016,36(8):2175-2180.
11. [11]
  MODLINSKI N, HARDY T. Development of high-temperature corrosion risk monitoring system in pulverized coal boilers based on reducing conditions identification and CFD simulations[J]. Appl Energ, 2017,204:1124-1137. doi: 10.1016/j.apenergy.2017.04.084
12. [12]
  ZHANG Chuan-mei, JIN Jing, ZHANG Hao, JIANG Jie, GAO Wen-jing, DONG Zhen. Numerical simulation on flow and temperature field of multi-phase flow in convective waste heat boiler of pressurized coal gasifiers[J]. J Power Eng, 2013,33(6):424-429.
13. [13]
  LIU Jing, WANG Zhi-hua, XIANG Fei-peng, HUANG Zhen-yu, LIU Jian-zhong, ZHOU Jun-hu, CEN Ke-fa. Modes of occurrence and transformation of alkali metals in Zhundong coal during combustion[J]. J Fuel Chem Technol, 2014,42(3):316-322.
14. [14]
  HE Jin-qiao, CHEN Dong-lin, YAN Xiao-zhong. Slagging characteristics of low alkailine-aild ratio coal ash on carborundumbased refractory liner under high temperature calcination[J]. J China Coal Soc, 2011,36(6):1022-1026.
15. [15]
  TIAN Si-da, ZHUO Yu-qun, KANG Zhi-zhong, FANG Yong-xu. Experimental study on distribution of mineral matter relating to slagging in light coal fractions[J]. J Eng Therm, 2016,37(8):1796-1801.
16. [16]
  WANG Dong-xu, QI Chao, WANG Yang, LI Wen-yan, XIAO Hai-ping, KANG Zhi-zhong. Effect of CaO content on the ash fusibility of high sodium coal[J]. J Fuel Chem Technol, 2017,45(9):1025-1034.
17. [17]
  LIN Xiong-chao, YANG Yuan-ping, XU Rong-sheng, LI Shou-yi, YUE Wen-fei, WANG Yong-gang. Occurrence and transformation behavior of AAEMs in the flotation fraction of a typical Xinjiang coal[J]. J Fuel Chem Technol, 2017,45(2):157-164.
18. [18]
  LI G, WANG C, YAN Y, JIN X, LIU Y, CHE D. Release and transformation of sodium during combustion of Zhundong coals[J]. J Energy Inst, 2016,89(1):48-56. doi: 10.1016/j.joei.2015.01.011
19. [19]
  CHEN X, KONG L, BAI J, BAI Z, LI W. Effect of Na₂O on mineral transformation of coal ash under high temperature gasification condition[J]. J Fuel Chem Technol, 2016,44(3):263-272. doi: 10.1016/S1872-5813(16)30015-9
20. [20]
  SHEN J, HU H, XU M, LIU H, XU K, ZHANG X, YAO H, NARUSE I. Interactions between molten salts and ash components during Zhundong coal gasification in eutectic carbonates[J]. Fuel, 2017,207:365-372. doi: 10.1016/j.fuel.2017.06.079
21. [21]
  MISHRA V, BHOWMICK T, CHAKRAVARTY S, VARMA A K, SHARMA M. Influence of coal quality on combustion behaviour and mineral phases transformations[J]. Fuel, 2016,186:443-455. doi: 10.1016/j.fuel.2016.08.092
22. [22]
  JORDAN C A, AKAY G. Speciation and distribution of alkali, alkali earth metals and major ash forming elements during gasification of fuel cane bagasse[J]. Fuel, 2012,91(1):253-263. doi: 10.1016/j.fuel.2011.05.031
23. [23]
  ZHOU C, LIU G, YAN Z, FANG T, WANG R. Transformation behavior of mineral composition and trace elements during coal gangue combustion[J]. Fuel, 2012,97:644-650. doi: 10.1016/j.fuel.2012.02.027
24. [24]
  ZHANG H, GUO X, ZHU Z. Effect of temperature on gasification performance and sodium transformation of Zhundong coal[J]. Fuel, 2017,189:301-311. doi: 10.1016/j.fuel.2016.10.097
25. [25]
  LIU S, QIAO Y, LU Z, GUI B, WEI M, YU Y, XU M. Release and transformation of sodium in kitchen waste during torrefaction[J]. Energy Fuels, 2014,28(3):1911-1917. doi: 10.1021/ef500066b
26. [26]
  KUMARI G, VAIRAKANNU P. Laboratory scale studies on CO₂ oxy-fuel combustion in the context of underground coal gasification[J]. J CO₂ Util, 2017,21:177-190. doi: 10.1016/j.jcou.2017.06.021
27. [27]
  SONG Wei-jian, SONG Guo-liang, QI Xiao-bin, LU Qing-gang. Sodium transformation law of Zhundong coal during gasification[J]. J China Coal Soc, 2016,41(2):490-496.
28. [28]
  ZHANG J, HAN C-L, YAN Z, LIU K, XU Y, SHENG C D, PAN W P. The varying characterization of alkali metals (Na, K) from coal during the initial stage of coal combustion[J]. Energy Fuels, 2001,15(4):786-793. doi: 10.1021/ef000140u
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