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The influence of N 2 /CO 2 blends on the explosion characteristics of stoichiometric methane–air mixture
Author(s) -
Chen Daiguo,
Yao Yong,
Deng Yongjun
Publication year - 2019
Publication title -
process safety progress
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.378
H-Index - 40
eISSN - 1547-5913
pISSN - 1066-8527
DOI - 10.1002/prs.12015
Subject(s) - dilution , diluent , methane , stoichiometry , laminar flow , carbon dioxide , materials science , analytical chemistry (journal) , carbon monoxide , chemistry , thermodynamics , nuclear chemistry , catalysis , chromatography , organic chemistry , physics
In this study, the explosion parameters of stoichiometric methane–air diluted with nitrogen (N 2 )/carbon dioxide (CO 2 ) blends, that is, maximum explosion pressure ( P max ), laminar burning velocity ( S L ), and activation temperature ( T a ), were investigated in a closed cylinder vessel. The concentrations of the dilution blends were 10% and 20%. The explosion pressure history was recorded by a pressure transducer. The results indicated that the dilution effect of CO 2 is more sensitive than that of N 2 . For a given dilution concentration, both the maximum explosion pressure and the laminar burning velocity decrease with the increase of CO 2 . In addition, the activation temperature is higher for increased CO 2 blends, demonstrating again that the diluent influence of CO 2 is more prominent. © 2018 American Institute of Chemical Engineers Process Saf Prog 38: e12015, 2019