Citation

Xu F, Nie X, Li F, Zhu L. China Saf. Sci. J. 2020; 30(9): 121-127.

Copyright

(Copyright © 2020, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn.1003-3033.2020.09.018

PMID

unavailable

Abstract

In order to improve gas extraction efficiency and promote safe production in coal mines，a low⁃ temperature plasma conversion of CH4 ⁃ O2 ⁃ N2 ⁃ H2O reaction system was studied by DBD experimental system. Effects of water/carbon ratio，oxygen/nitrogen ratio，discharge voltage，discharge frequency and total gas flow rate on methane conversion and main product yields were investigated. The results show that main products of DBD in CH4⁃O2⁃N2⁃H2O reaction system are hydrogen，carbon monoxide，carbon dioxide，acetylene，ethylene，ethane and methanol. Parameters of reactors have obvious impacts on methane conversion and hydrogen，carbon monoxide，carbon dioxide，ethane and methanol yields，but they affect only slightly on yield of acetylene and ethylene. Conversion rate of methane and yields of main products both reach maximum value at discharge frequency of 9.8 kHz. © 2020 China Safety Science Journal. All rights reserved.

Language: zh