Formation characteristics of Hg particulates during combustion of different coals

GAO Zheng-yang; YIN Li-bao; ZHOU Li-ming; ZHONG Jun; ZHENG Shuang-qing

Volume 40 Issue 09

Sep. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(09): 1135-1141

GAO Zheng-yang, YIN Li-bao, ZHOU Li-ming, ZHONG Jun, ZHENG Shuang-qing. Formation characteristics of Hg particulates during combustion of different coals[J]. Journal of Fuel Chemistry and Technology, 2012, 40(09): 1135-1141.

Citation:

GAO Zheng-yang, YIN Li-bao, ZHOU Li-ming, ZHONG Jun, ZHENG Shuang-qing. Formation characteristics of Hg particulates during combustion of different coals[J]. Journal of Fuel Chemistry and Technology, 2012, 40(09): 1135-1141.

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Formation characteristics of Hg particulates during combustion of different coals

1.
School of Energy and Power Engineering, North China Electric Power University, Baoding 071003, China;
2.
Electric Power Research Institute of Guangdong Power Grid Corporation, Guangzhuo 510000, China

Received Date: 2011-12-23
Rev Recd Date: 2012-03-23
Publish Date: 2012-09-29

Abstract

Abstract

Combustion experiments (3 coals, 3 coals with addition of 1%, 3%, 5% CaBr₂ and Ca(CH₃COO)₂, and a coal with addition of Fe₂O₃) were conducted on a high temperature electric heating reactor at 1 250℃. The fly ashes were collected and the particulate Hg (Hg_p) contents were analyzed. The specific surface area, EDS, and XRD analysis were performed. It is indicated that the Hg_p formations characteristics of the 3 coals were rather different. The ash of coal 3 has the largest specific surface area, but the lowest Hg content and Hg_p ratio in its ash. CaBr₂ addition leads to significant increment of Hg content in ash and Hg_p ratio. Ca (H₃COO)₂ and Fe₂O₃ addition do not lead to prominent increase of Hg_p.
- CaBr₂,
- Hg_p,
- coal combustion

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References(21)

References

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