Citation: HU Xiao-fei, GUO Qing-hua, LIU Xia, GONG Yan, YU Guang-suo. Ash fusion and viscosity behavior of coal ash with high content of Fe and Ca[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(7): 769-776. shu

Ash fusion and viscosity behavior of coal ash with high content of Fe and Ca

HU Xiao-fei ^1,2 ,
GUO Qing-hua ^1,2 ,
LIU Xia ^1,2 ,
GONG Yan ^1,2 ,
YU Guang-suo ^1,2,*,,

1.
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
2.
Collaborative Innovation Center of Chemical Technology for Coal Based Energy, Shanghai 200237, China

Corresponding author: YU Guang-suo, gsyu@ecust.edu.cn
Received Date: 27 January 2016
Revised Date: 26 April 2016

Fund Project: The project was supported by the National Natural Science Foundation of China 51406056the Fundamental Research Funds for the Central Universities 222201514336the Shanghai Pujiang Program 15PJD011the Fundamental Research Funds for the Central Universities 222201414030

Figures(7)

Jinjitan coal and sand were respectively chosen as raw material and additive. Under the different proportion of additive, ash fusion and viscosity behavior of coal ash with high contents of Fe and Ca were studied. X-ray diffraction (XRD), high-temperature stage microscope (HTSM) and scanning electron microscopy-energy dispersive spectrometry (SEM-EDS) were applied to investigate effect of mineral transformation on ash fusion and viscosity behavior of coal ash. The results show that ash fusion temperature decreases at first and then increases with the rising content of additive, and formation of low temperature eutectic augite is the main reason for the lower ash fusion temperature. The viscosity fluctuation is related to the formation of gehlenite, and the precipitation of iron-bearing minerals causes significant increase of viscosity. The temperature of critical viscosity (t_cv) of coal ash slag drops dramatically and the slag type transforms from crystal slag to glass slag with addition of sand. Distribution of Fe and Ca shows obvious different in raw coal slag, but additive makes it become more uniform, which is in agreement with the viscosity curve. Moreover, the industrial results prove that sand is an effective additive to improve the viscosity behavior of coal ash with high content of Fe and Ca.
- high-calciu-high-iron coal,
- ash fusion temperature,
- viscosity-temperature behavior,
- slag
1. [1]
  YU Guang-suo, NIU Miao-ren, WANG Yi-fei, LIANG Qin-feng, YU Zun-hong. Application status and development tendency of coal entrained-bed gasification[J]. Mod Chem Ind, 2004,24(5):23-26.
2. [2]
  PATTERSON J H, HURST H J. Ash and slag qualities of Australian bituminous coals for use in slagging gasifiers[J]. Fuel, 2000,79(13):1671-1678. doi: 10.1016/S0016-2361(00)00032-6
3. [3]
  VAN DYK J C, BENSON S A, LAUMB M L, WAANDERS B. Coal and coal ash characteristics to understand mineral transformations and slag formation[J]. Fuel, 2009,88(6):1057-1063. doi: 10.1016/j.fuel.2008.11.034
4. [4]
  ZHOU Zhi-jie, LI De-xia, LIU Xia, YU Guang-suo. Characteristic of cohesiveness-temperature of coal molten ash and its adaptability to entrained flow gasifier[J]. CIESC J, 2012,63(10):3243-3254.
5. [5]
  SONG W J, DONG Y H, WU Y Q, ZHU Z B. Prediction of temperature of critical viscosity for coal ash slag[J]. AIChE J, 2011,57(10):2921-2925. doi: 10.1002/aic.v57.10
6. [6]
  SONG W J, SUN Y M, WU Y Q, ZHU Z B. Measurement and simulation of flow properties of coal ash slag in coal gasification[J]. AIChE J, 2011,57(3):801-818. doi: 10.1002/aic.12293
7. [7]
  KONG L X, BAI J, LI W, LI X M, BAI Z Q, GUO Z X, LI H Z. The internal and external factor on coal ash slag viscosity at high temperatures, Part 1: Effect of cooling rate on slag viscosity, measured continuously[J]. Fuel, 2015,158:968-975. doi: 10.1016/j.fuel.2015.02.055
8. [8]
  KONG L X, BAI J, LI W, BAI Z Q, GUO Z X, LI H Z. The internal and external factor on coal ash slag viscosity at high temperatures, Part 2: Effect of residual carbon on slag viscosity[J]. Fuel, 2015,158:976-982. doi: 10.1016/j.fuel.2015.06.055
9. [9]
  KONG L X, BAI J, BAI Z Q, LL W. Effects of CaCO₃ on slag flow properties at high temperatures[J]. Fuel, 2013,109:76-85. doi: 10.1016/j.fuel.2012.11.014
10. [10]
  XUAN W W, WHITTY K J, GUAN Q L, BI D P, ZHAN Z H, ZHANG J S. Influence of Fe₂O₃ and atmosphere on crystallization characteristics of synthetic coal slags[J]. Energy Fuels, 2014,29(1):405-412.
11. [11]
  XUAN W W, WHITTY K J, GUAN Q L, BI D P, ZHAN Z H, ZHANG J S. Influence of isothermal temperature and cooling rates on crystallization characteristics of a synthetic coal slag[J]. Fuel, 2014,137:193-199. doi: 10.1016/j.fuel.2014.07.092
12. [12]
  XUAN W W, WHITTY K J, GUAN Q L, BI D P, ZHAN Z H, ZHANG J S. Influence of SiO₂/Al₂O₃ on crystallization characteristics of synthetic coal slags[J]. Fuel, 2015,144:103-110. doi: 10.1016/j.fuel.2014.11.091
13. [13]
  ZHANG Long, HUANG Zhen-yu, SHEN Ming-ke, WANG Zhi-hua, ZHOU Jun-hu. Effect of different regulative methods on coal ash fusion characteristics[J]. J Fuel Chem Technol, 2015,43(2):145-152.
14. [14]
  LU Hong-quan, LI Han-xu, MA Fei, MENG Ying, JIA Chun-lin. Study on fly ash fusibility affected by calcium base flux and fusion mechanism[J]. Coal Sci Technol, 2011,39(2):111-118.
15. [15]
  ZHAO Feng, GONG Yan, LIU Xia, XU Jie, YU Guang-suo. Fusion characteristics at high temperature of low temperature ash and high temperature ash of Shenfu coal[J]. Proc CSEE, 2015,35(5):1161-1168.
16. [16]
  MA Yan, HUANG Zhen-yu, WANG Zhi-hua, ZHOU Jun-hu, CEN Ke-fa. Mineral conversion of Zhundong coal during ashing process and the effect of mineral additives on its fusion characteristics[J]. J Fuel Chem Technol, 2014,42(1):20-25.
17. [17]
  DAI Bai-qian, WU Xiao-jiang, CHEN Yu-shuang, ZHANG Zhong-xiao. Experimental study and quantum chemistry calculation on coal ash fusion behavior and related mineral evolution mechansium[J]. J Chin Soc Power Eng, 2014,34(1):70-76.
18. [18]
  LI De-xia, ZHOU Zhi-jie, GUO Qing-hua, YU Guang-suo. Ash fusion and viscosity-temperature characteristics of Yulin coal[J]. CIESC J, 2012,63(1):9-16.
19. [19]
  XU Jie, LIU Xia, ZHANG Qing, ZHAO Feng, GUO Qing-hua, YU Guang-suo, WANG Fu-chen. Reseaech on ash fusibility and viscosity-temperature characteristic of high-calcium Shanxin coal ash[J]. Proc CSEE, 2013,33(20):46-51.
20. [20]
  VARGAS S, FRANDSEN F J, DAM-JOHANSEN K. Rheological properties of high-temperature melts of coal ashes and other silicates[J]. Prog Energy Combust Sci, 2001,27(3):237-429. doi: 10.1016/S0360-1285(00)00023-X
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