Citation: Meng WANG, Yi-bin WANG, Hou-zhang TAN, Li-hai HE, Rui SUN, Guang HE, Jian-wei YANG. Effect of industrial ashes with high carbon and calcium-rich on slagging characteristics of blending Zhundong coals[J]. Journal of Fuel Chemistry and Technology, ;2021, 49(1): 1-10. doi: 10.19906/j.cnki.JFCT.2021001 shu

Effect of industrial ashes with high carbon and calcium-rich on slagging characteristics of blending Zhundong coals

Meng WANG ¹ ,
Yi-bin WANG ¹ ,
Hou-zhang TAN ^1,, ,
Li-hai HE ² ,
Rui SUN ² ,
Guang HE ² ,
Jian-wei YANG ²

1.
MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2.
Thermal Power Plant of Xinjiang Zhongtai Mining and Metallurgy Co., Ltd, Urumchi 830001, China

Corresponding author: Hou-zhang TAN, tanhz@mail.xjtu.edu.cn
Received Date: 9 September 2020
Revised Date: 14 October 2020
Available Online: 8 June 2022

Figures(11)

Influence of two kinds of industrial ashes with high carbon and calcium-rich as additives (drying ash and fly ash) on slagging characteristics for blends of high and low sodium coals was studied in detail. Experiments were performed including ash fusion temperature tests, ashing for blending coals with/without additives in a fixed bed furnace and slagging on un-cooled probe in a drop tube furnace. The results show that there is a large amount of amorphous silicon at 1000 ℃ during combustion of raw blending coals, which easily leads to low-temperature eutectic reaction at higher temperature. Adding 5% fly ash can raise soften temperature of the blended coal ashes by 100 ℃, and mass ratio of CaO to SiO₂ in ashes reaches up to 2.5. Dicalcium silicate and grossular are newly generated, which effectively reduce the slagging propensities. The main phase in slag samples collected on the probe is identified as gehlenite after adding two industrial ashes into raw blending coals. The addition of two typical ashes can transform amorphous silicon into its crystalline mineral phase, inhibit formation of low-temperature eutectics. In contrast to the case of adding 5% fly ash, impact of adding 5% drying ash into raw blending coals on slagging tendency of the ash particles on un-cooled probe is insignificant.
- additives,
- ash fusion temperature,
- high-sodium coal,
- blending coal,
- slagging characteristics
1. [1]
  WEI Bo, TAN Hou−zhang, WANG Xue−bin, RUAN Ren−hui, HU Zhong−fa, WANG Yi−bin. Effect of Na/Ca/Fe on slagging behavior of Zhundong coal during combustion process[J]. J Chin Soc Power Eng,2017,37(9):685−690.
2. [2]
  LÜ Jun−fu, SHI Hang, WU Yu−xin, ZHANG Yang. Transformation of AAEM and ash deposition characteristics during combustion of Zhundong coal[J]. J China Coal Soc,2020,45(1):377−385.
3. [3]
  DONG ming−gang. Influence of high−sodium coal upon slagging, contamination and corrosion on the heating surface of boilers[J]. Therm Power Gen,2008,37(9):35−39. doi: 10.3969/j.issn.1002−3364.2008.09.010
4. [4]
  WEI B, TAN H, WANG Y, WANG X, YANG T, RUAN R. Investigation of characteristics and formation mechanisms of deposits on different positions in full−scale boiler burning high alkali coal[J]. Appl Therm Eng,2017,119:449−458. doi: 10.1016/j.applthermaleng.2017.02.091
5. [5]
  WANG X, XU Z, WEI B, ZHANG L, TAN H, YANG T, MIKULCIC H, DUIC N. The ash deposition mechanism in boilers burning Zhundong coal with high contents of sodium and calcium: a study from ash evaporating to condensing[J]. Appl Therm Eng,2015,80:150−159. doi: 10.1016/j.applthermaleng.2015.01.051
6. [6]
  WU X, ZHANG X, YAN K, CHEN N, ZHANG J, XU X, DAI B, ZHANG J, ZHANG L. Ash deposition and slagging behavior of Chinese Xinjiang high-alkali coal in 3 MWth pilot−scale combustion test[J]. Fuel,2016,181:1191−1202. doi: 10.1016/j.fuel.2016.03.069
7. [7]
  YANG S, SONG G, YANG Z, NA Y. Alkali metal transformation and ash deposition performance of high alkali content Zhundong coal and its gasification fly ash under circulating fluidized bed combustion[J]. Appl Therm Eng,2018,141:29−41. doi: 10.1016/j.applthermaleng.2018.05.113
8. [8]
  ZENG Xian−peng, YU Dun−xi, YU Ge, LIU Fang−qi, LIU Hu−ping, XU Ming−hou. Transformation of inorganic elements in different forms into ash particles during Zhundong coal combustion[J]. J China Coal Soc,2019,44(2):588−595.
9. [9]
  WALSH P M, SAROFIM A F, BEER J M. Fouling of convection heat exchangers by lignitic coal ash[J]. Energy Fuels,1992,6(6):709−715. doi: 10.1021/ef00036a004
10. [10]
  ZHANG Li−meng, DONG Xin−guang, LIU Ke, TAN Hou−zhang, WANG Xue−bin, WEI Bo. Effect of kaolin on ash slagging and mineral conversion of Zhundong coal[J]. J Fuel Chem Technol,2015,43(10):1176−1181. doi: 10.3969/j.issn.0253−2409.2015.10.004
11. [11]
  SHEN Min−ke, QIU Kun−zan, HUANG Zheng−yu, WANG Zhi−hua, LIU Jian−zhong. Influence of kaolin on sodium retention and ash fusion characteristic during combustion of Zhundong coal[J]. J Fuel Chem Technol,2015,43(9):1044−1051. doi: 10.3969/j.issn.0253−2409.2015.09.004
12. [12]
  WEI Bo, WANG Xue−bin, ZHANG Li−meng, TAN Hou−zhang, XU Tong−mo. Experimental research on the inpacts of Zhundong Coal blending waste silicon power on sodium transformation and ash fusion[J]. Electr pow,2014,47(10):98−102+116.
13. [13]
  WANG Xue−bin, WEI bo, ZHANG Li−meng, TAN Hou−zhang, XU Tong−mo. Effect of temperature and silicon additives on occurrence and transformation characteristics of alkali metal in Zhundong coal[J]. Therm Power Gen,2014,43(8):84−88. doi: 10.3969/j.issn.1002−3364.2014.08.084
14. [14]
  MA Yan, HUANG Zheng−yu, TANG Hui−ru, 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 ash fusion characteristics[J]. J Fuel Chem Technol,2014,42(1):20−25.
15. [15]
  ZHANG Xue−hui, WEI Bo, MA Rui, RUAN Ren−hui, TAN Hou−zhang. Evaluation of fusion characteristics of modified fly ash when used as slagging inhibitor for high alkali coal in Zhundong area[J]. Therm Power Gen,2019,48(1):43−48.
16. [16]
  LIU Yan−quan, CHENG Le−ming, JI Jie−qiang, FANG Meng−xiang, WANG Qin−hui. Influence of additives on sodium release and ash sintering temperature of a high−alkali coal[J]. J Fuel Chem Technol,2018,46(11):1298−1304. doi: 10.3969/j.issn.0253−2409.2018.11.003
17. [17]
  GAO Man-da. Sodium behavior in Zhundong coal combustion and the effect of phosphorus−rich additives on combustion and ash fusion characteristics[D]. Beijing: North China Electric Power University, 2019.
18. [18]
  GAO Man−da, SUN Bao−min, SU Yi−feng. Influence of NH₄H₂PO₄ on ash composition and ash−forming characteristics during combustion of Zhundong coal[J]. Proc CSEE,2018,38(20):6012−6020.
19. [19]
  WEI Li−hong, LIANG Fa−guang, FANG Fan, MA Ting−ting, YANG Tian−hua. Effect of phosphorus on ash fusion characteristics and mineral transformation during co−combustion of sewage and coal[J]. J Fuel Chem Technol,2019,47(2):129−137. doi: 10.3969/j.issn.0253−2409.2019.02.001
20. [20]
  GAO Shan-shan, JIN jing, LIU Dun-yu, WANG Yong-zhen, YAO Yu-xiang, KOU Xue-sen. Effect of vermiculite composite on the anti−slagging behavior during combustion of Zhundong coal[J]. Chem Ind Eng Prog,2017,36(9):3280−3286.
21. [21]
  YAO Yu−xiang. The study of a new additive on reducing slagging and fouling during rhe combustion of Zhundong coal[D]. Shanghai: University of Shanghai for Science and Technology, 2017.
22. [22]
  ZHOU Shang−kun, WANG Meng, TAN Hou−zhang, XIONG Xiao−he, LÜ Zhao−min, YANG Fu−xin. effect of vermiculite on the slagging characteristics of high sodium and high calcium Zhundong coal[J]. J Fuel Chem Technol,2019,47(4):419−427.
23. [23]
  AKIYAMA K, PAK H, UEKI Y, YOSHⅡE R, NARUSE I. Effect of MgO addition to upgraded brown coal on ash−deposition behavior during combustion[J]. Fuel,2011,90(11):3230−3236. doi: 10.1016/j.fuel.2011.06.041
24. [24]
  YANG Yan−mei, ZHANG Hai, ZHANG Yang, WU Yu−Xin, LIU Qing. Effect of Si/Al/Na/Ca on ash fusion characteristics of Zhundong coal[J]. J Eng Thermophys,2018,39(8):1858−1863.
25. [25]
  HAN Rui−wu, TAN Hou−zhang, WEI Bo, WANG Yi−bin, ZHANG Peng. Characteristics of layered ash deposition in Shell coal gasification syngas cooler[J]. CIESC J,2017,68(5):2148−2154.
26. [26]
  WEI Bo, TAN Hou−zhang, WANG Xue−bin, YANG Tao, HAN Rui−wu, RUAN Ren−hui. Ash fusion characteristics under complex atmosphere in coal combustion process[J]. J Combust Sci Technol,2017,23(4):320−324.
27. [27]
  ZHOU Yong−gang, FAN Jian−yong, LI Pei, WANG Bing−hui, ZHAO Hong. Mineral transmutation of high alkali Zhundong coal in ash melting process[J]. J Zhejiang Univ, Eng Sci,2015,49(8):1559−1564.
28. [28]
  TAO Yu−jie, ZHANG Yan−wei, ZHOU Jun−hu, WANG Bing−hui, ZHAO Hong. Mineral conversion regularity and release behavior of Na, Ca during Zhundong coal’s combustion[J]. Proc CSEE,2015,35(5):1169−1175.
29. [29]
  SHEN Min−ke. Research on sodium retent and ash fusion characteristics of Zhundong coal[D]. Hangzhou: Zhejiang University, 2016.
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