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Oxygen-Enriched Combustion Characteristics of Lignite: A Case Study of the Pingzhuang Lignite from Inner Mongolia, China

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Abstract:

Combustion curves of lignite samples from China in four different particle sizes and Oxygen-enriched condition were analyzed using non-isothermal thermogravimetric method. The lignite samples separated into -150+100 μm, -100+75 μm, -75+50 μm, and -50μm sizes. Combustion profiles shift to lower temperature zone as particle size decrease. Combustion profiles have little difference when the particle size below 100 μm in oxygen atmosphere; Oxygen-enriched combustion experiment were carried out in O2/N2 mixture atmospheres with the volume fraction of oxygen was 21%, 30%, 40%, 50%, 60% and 70%, respectively. As oxygen concentration increase profiles shift to lower temperature zone. and gets the proper range of oxygen concentration is about 50%.

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Info:

Periodical:

Advanced Materials Research (Volumes 550-553)

Pages:

2868-2872

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.550-553.2868

Citation:

Cite this paper

Online since:

July 2012

Authors:

Xiang Yun Chen, Yong Feng Zhang, Qian Cheng Zhang, Jie Bai, Fei Wu

Keywords:

Differential Scanning Calorimetry (DSC), Lignite, Oxygen-Enriched Combustion, Particle Size, Thermo-Gravimetry (TG)

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