Effect of CO<sub>2</sub> atmosphere on sulfur release during coal pyrolysis

GUO Hui-qing; FU Qi; WANG Xin-long; LIU Fen-rong; HU Rui-sheng; ZHANG Hao

Volume 45 Issue 5

May 2017

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GUO Hui-qing, FU Qi, WANG Xin-long, LIU Fen-rong, HU Rui-sheng, ZHANG Hao. Effect of CO2 atmosphere on sulfur release during coal pyrolysis[J]. Journal of Fuel Chemistry and Technology, 2017, 45(5): 523-528.

Citation:

GUO Hui-qing, FU Qi, WANG Xin-long, LIU Fen-rong, HU Rui-sheng, ZHANG Hao. Effect of CO₂ atmosphere on sulfur release during coal pyrolysis[J]. Journal of Fuel Chemistry and Technology, 2017, 45(5): 523-528.

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Effect of CO₂ atmosphere on sulfur release during coal pyrolysis

1.
College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
2.
College of Pharmacy, Inner Mongolia Medical University, Hohhot 010110, China

Funds:

the National Natural Science Foundation of China 21466025

Received Date: 2016-11-11
Rev Recd Date: 2017-03-22

Available Online: 2021-01-23

Publish Date: 2017-05-10

Abstract

Abstract

Yima (YM) coal and Pingshuo (PS) coal as well as their deashed coals and depyrited coals were used to investigate the effects of CO₂ and Ar on the sulfur release behavior during coal pyrolysis by pyrolysis connected with mass spectrometer (Py-MS) and pyrolysis connected with gas chromatogram (Py-GC). It is found that CO₂ atmosphere can promote the release of H₂S, COS and SO₂, especially the remarkable releasing of COS. In addition, CO₂ atmosphere can decrease the maximum release peak temperature of H₂S, COS and SO₂ for raw coals, while there is no obvious effect for their deashed coals. At the same time, CO₂ is beneficial to the decomposition of organic sulfur at higher temperature. That the COS formation is related to CO at higher temperatures and has nothing to do with CO at lower temperatures is validated.
- CO₂ atmosphere,
- coal pyrolysis,
- sulfur release,
- Py-MS,
- Py-GC

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References(16)

References

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