Study on effect of furfural residue addition on fusion characteristics of gasification coal ash

MA Xiao-tong; WANG Zhi-gang; LU Hao; ZHUANG Shu-juan; WANG Yan-xia; LIU Wei; ZHAO Jiang-shan; KONG Ling-xue

doi:10.1016/S1872-5813(23)60355-X

Volume 51 Issue 10

Oct. 2023

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Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(10): 1373-1382

MA Xiao-tong, WANG Zhi-gang, LU Hao, ZHUANG Shu-juan, WANG Yan-xia, LIU Wei, ZHAO Jiang-shan, KONG Ling-xue. Study on effect of furfural residue addition on fusion characteristics of gasification coal ash[J]. Journal of Fuel Chemistry and Technology, 2023, 51(10): 1373-1382. doi: 10.1016/S1872-5813(23)60355-X

Citation:

MA Xiao-tong, WANG Zhi-gang, LU Hao, ZHUANG Shu-juan, WANG Yan-xia, LIU Wei, ZHAO Jiang-shan, KONG Ling-xue. Study on effect of furfural residue addition on fusion characteristics of gasification coal ash[J]. Journal of Fuel Chemistry and Technology, 2023, 51(10): 1373-1382. doi: 10.1016/S1872-5813(23)60355-X

Citation:

MA Xiao-tong, WANG Zhi-gang, LU Hao, ZHUANG Shu-juan, WANG Yan-xia, LIU Wei, ZHAO Jiang-shan, KONG Ling-xue. Study on effect of furfural residue addition on fusion characteristics of gasification coal ash[J]. Journal of Fuel Chemistry and Technology, 2023, 51(10): 1373-1382. doi: 10.1016/S1872-5813(23)60355-X

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Study on effect of furfural residue addition on fusion characteristics of gasification coal ash

doi: 10.1016/S1872-5813(23)60355-X

1.
School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, China
2.
College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China
3.
State Key Lab of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

Funds: The project was supported by the Natural Science Foundation of ShanDong Province (ZR2020KB014，ZR2022QB206)

Received Date: 2023-01-18
Accepted Date: 2023-03-02
Rev Recd Date: 2023-03-02

Available Online: 2023-04-06

Publish Date: 2023-10-10

Abstract

Abstract

The co-gasification of furfural residue with coal is a feasible way to realize its clean and efficient utilization, but there is a high content of alkaline components in the furfural residue ash. Therefore, the effect of furfural residue addition on the fusion temperature of gasification coal ash was investigated, in which a typical furfural residue and two gasification coals with different ratios of silicon to aluminum (Si/Al) were selected. X-ray diffraction instrument (XRD) was used to measure the mineral evolution of co-gasification ash at different temperatures. The phase change in equilibrium state was calculated by the software FactSage. The results show that with the increase in furfural residue addition ratio, the fusion temperatures of both gasification coal ashes first increase and then decrease, while the increase trend of fusion temperatures for the coal with a high Si/Al ratio is more significant. When the furfural residue is added, the resulting high melting point mineral of gasification slag is changed from anorthite (CaAl₂Si₂O₈) to leucite (KAlSi₂O₆) that is still present as a solid phase at 1300 ℃, resulting in an increase of AFTs. The coal ash with more amount of SiO₂ can react with K₂O to produce more leucite (KAlSi₂O₆) with a higher fusion point, thus causing the ash fusion temperatures to rise. However, as the ratio of furfural residue addition continues to increase, the ash fusion temperatures decrease, which is attributed to the formation of kaliophilite (KAlSiO₄) with a low fusion point that is generated in the presence of higher content of K₂O.
- furfural residue,
- coal gasification,
- fusion temperatures,
- minerals

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References(27)

References

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