Citation: HAN Feng, ZHANG Yan-guo, MENG Ai-hong, LI Qing-hai. Evolution of gaseous products and analysis of methane generation reaction types during pyrolysis of Shuicheng lignite[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(1): 7-12. shu

Evolution of gaseous products and analysis of methane generation reaction types during pyrolysis of Shuicheng lignite

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Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory for CO₂ Utilization and Reduction Technology, Tsinghua University, Beijing 100084, China

Corresponding author: ZHANG Yan-guo,
Received Date: 10 July 2013
Available Online: 5 September 2013
Fund Project: 国家重点基础研究发展规划(973计划,2011CB201502) (973计划,2011CB201502)云南省科技创新强省计划(2010AD010) (2010AD010)云南省重大科技专项—新能源(2012ZB006)。 (2012ZB006)

The Fourier transform infrared (FT-IR) spectroscopy was applied to investigate the functional groups of Shuicheng lignite, and the simultaneous thermogravimetry-mass spectrometry (TG/MS) at heating rate of 10 ℃/min was used to investigate the pyrolysis behavior of coal. The instantaneous evolution of the gaseous products (H₂, CH₄, H₂O, CO, CO₂) was studied by means of temperature-programmed pyrolysis experiments. The pyrolytic generation characteristics of methane was specially analyzed. Five peaks were fitted and the kinetic parameters were calculated by the fitting of curves. By the kinetic analysis combined with structure analysis, pyrolysis characteristics and the evolution features of other volatiles during pyrolysis, it is found that the lowest temperature peak represents the desorption of adsorbed methane in coal and the other four peaks are the results of methane generation during pyrolysis, which involves four types of reactions.
- functional group,
- pyrolysis,
- mass spectrometry,
- methane,
- Shuicheng lignite
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