Effect of pretreatment methods on the determination of alkali metal content in high alkali metal Zhundong coal

SONG Wei-jian; SONG Guo-liang; QI Xiao-bin; LÜ Qing-gang

Volume 44 Issue 2

Feb. 2016

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Article Navigation > Journal of Fuel Chemistry and Technology > 2016 > 44(2): 162-167

SONG Wei-jian, SONG Guo-liang, QI Xiao-bin, LÜ Qing-gang. Effect of pretreatment methods on the determination of alkali metal content in high alkali metal Zhundong coal[J]. Journal of Fuel Chemistry and Technology, 2016, 44(2): 162-167.

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SONG Wei-jian, SONG Guo-liang, QI Xiao-bin, LÜ Qing-gang. Effect of pretreatment methods on the determination of alkali metal content in high alkali metal Zhundong coal[J]. Journal of Fuel Chemistry and Technology, 2016, 44(2): 162-167.

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Effect of pretreatment methods on the determination of alkali metal content in high alkali metal Zhundong coal

1.
Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

More Information

Corresponding author: E-mail: songgl@iet.cn
Received Date: 2015-09-11
Rev Recd Date: 2015-11-05

Available Online: 2022-03-23

Publish Date: 2016-02-01

Abstract

Abstract

High alkali metal coal from four coal mines in Zhundong coalfield and its gasification fly ash were used to investigate the occurrence of alkali metal with five pretreatment methods including low temperature ashing,microwave digestion,national standards,cascade extraction and oxygen bomb combustion.The results show that the sodium in the high alkali metal coal exists mainly in the water soluble form,and the potassium is in the water insoluble form;The method of oxygen bomb combustion is the optimum one to determine the content of Na and K in high alkali coal and gasification fly ash,and the method of cascade extraction is also a better one to determine the content of Na.
- alkali metal determination,
- pretreatment methods,
- low temperature ashing,
- microwave digestion,
- oxygen bomb combustion

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References(19)

References

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