Interaction of potassium with mineral matter in coal during steam gasification

WANG Xing-jun; CHEN Fan-min; LIU Hai-feng; YU Guang-suo; WANG Fu-chen

Volume 41 Issue 01

Jan. 2013

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WANG Xing-jun, CHEN Fan-min, LIU Hai-feng, YU Guang-suo, WANG Fu-chen. Interaction of potassium with mineral matter in coal during steam gasification[J]. Journal of Fuel Chemistry and Technology, 2013, 41(01): 9-13.

Citation:

WANG Xing-jun, CHEN Fan-min, LIU Hai-feng, YU Guang-suo, WANG Fu-chen. Interaction of potassium with mineral matter in coal during steam gasification[J]. Journal of Fuel Chemistry and Technology, 2013, 41(01): 9-13.

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Interaction of potassium with mineral matter in coal during steam gasification

Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science & Technology, Shanghai 200237, China

Received Date: 2012-07-27
Rev Recd Date: 2012-10-10
Publish Date: 2013-01-31

Abstract

Abstract

The catalysis of potassium carbonate on the steam gasification of coals was investigated in a fixed-bed reactor. The interaction of potassium with mineral matter in ten coals was examined. The gasification residue after leaching with water was analysed by X-ray diffraction (XRD) and X-ray fluorescence (XRF). The results show that potassium aluminum silicate is the major crystallite derived from the interaction of potassium with mineral matter. As the ash is in low calcium content, the molar ratio of non-recoverable potassium to aluminum is one. However, as the ash is in high calcium content, the calcium can fix a large number of aluminum in the form of gehlenite (Ca₂Al₂SiO₇), which would inhibit the deactivation of potassium.
- catalytic gasification,
- mineral matter,
- potassium carbonate,
- deactivation

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References(14)

References

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