Study on Ash Fusion Properties of the Ningdong Coal by Coal Blending

Abstract:

Coal blending is widely utilized in coal chemical industry and power plants, and ash slagging propensity, a non-additive property of the pure coals, is difficult to predict and related to its AFTs (ash fusion temperatures). A combustion experimental approach was undertaken to investigate the influence of coal blending ratio on the AFTs of three coal samples Sh-coal, Qi-coal, Que-coal from Ningdong mining areas. The results showed that a nonlinear decrease of the AFTs was obtained with the blending ratios (Sh-coal/Qi-coal or Sh-coal/Que-coal) increasing, the AFTs dropped by 30 °C from 0.5 to 0.8 ratio; the content of Al₂O₃ can be obviously lowered AFTs. Therefore, coal blending could lower the AFTs evidently. The obtained results in this research can be used in coal gasification process and further theoretical studies.

• Periodical: Advanced Materials Research (Volume 868)
• Pages: 365-369
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.868.365
• Online since: December 2013
• Authors: Ping Li*, Zhi Xin Wang, Sheng Dan Feng, Li Su
• Keywords: AFTs, Coal Blending, Liquid Slag, Ningdong Coal

References

[1] Song W, Tang L, Zhu X, et al. Fuel, 2009, 88(2): 297-304.

[2] Vamvuka D, Kakaras E. Fuel Processing Technology, 2011, 92(3): 570-581.

[3] Jiao F, Ninomiya Y, Zhang L, et al. Fuel Processing Technology, (2012).

[4] Ctvrtnickova T, Mateo M P, Yanez A, et al. [J]. Applied Surface Science, 2011, 257(12): 5447-5451.

[5] Qiu J R, Li F, Zheng Y, et al. Fuel, 1999, 78(8): 963-969.

[6] Bryant G W, Browning G J, Emanuel H, et al. Energy & fuels, 2000, 14(2): 316-325.

[7] LU D, HUANG Z, XU J, et al. [J]. Proceedings of the CSEE, 2010, 8: 004. ( In Chinese).

[8] Rushdi A, Sharma A, Gupta R. [J]. Fuel, 2004, 83(4): 495-506.