Comparative Study on Microwave Co-Pyrolysis Products of Low Rank Coal in CO₂ and N₂ Atmosphere

Abstract:

Microwave pyrolysis of coal is a new research method for deeply processing of low rank coal. This paper conducted comparative study on microwave co-pyrolysis products of low rank coal in CO₂ and N₂ atmosphere. The composition and content of tar and bluecoke were analyzed by gas chromatography-mass spectrometry and FTIR spectroscopy. The results showed that the yields of liquid products in CO₂ and N₂ atmosphere were 20.6% and 18.0% respectively, and the yields of bluecoke were 62.0% and 65.8%. Bluecoke obtained from CO₂ pyrolysis atmosphere had the lower content of fixed carbon and oxygenic functional groups, but the higher content of volatile. There was the lower content of aromatic hydrocarbons and the higher content of oxygenic functional groups in the tar produced in CO₂ pyrolysis atmosphere due to CO₂ gasification effect.

• Periodical: Advanced Materials Research (Volumes 1033-1034)
• Pages: 142-145
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1033-1034.142
• Online since: October 2014
• Authors: Jun Zhou*, Zhe Yang, Wen Zhi Shang, Qiu Li Zhang, Yong Hui Song, Xi Cheng Zhao, Xin Zhe Lan
• Keywords: CO₂ Atmosphere, CoAl, Microwave, N₂ Atmosphere, Pyrolysis Products

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