TY - JOUR
T1 - Influence of hydrocarbon additions and dilutions on explosion behavior of syngas/air mixtures
AU - Tran, Manh Vu
AU - Scribano, Gianfranco
AU - Chong, Cheng Tung
AU - Ho, Thinh X.
N1 - Funding Information:
Research reported in this publication was supported by Monash University Malaysia under Seed Grant (Ref. no. 5140810-113-MVT ).
Publisher Copyright:
© 2017 Hydrogen Energy Publications LLC
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017/11/2
Y1 - 2017/11/2
N2 - In this study, explosion behaviors of hydrocarbon-added and diluted syngas/air mixtures were investigated experimentally in a constant volume combustion chamber. Hydrocarbons such as methane and propane, and diluents, such as helium and nitrogen, were added to a syngas/air mixture to evaluate the effects of hydrocarbon and dilution on the explosion characteristics of flames. The results showed that for hydrocarbon additions, both the maximum explosion pressure and the explosion time increased linearly with the hydrocarbon concentration, while the maximum rate of pressure rise decreased nonlinearly, which can be correlated to an exponential equation. It was observed that propane had a stronger effect on reducing the pressure rise rate than methane did. With dilutions, the maximum explosion pressure decreased linearly and the explosion time increased linearly, so the pressure rise rate was significantly reduced. An exponential correlation of pressure rise rate and dilution ratio was observed. Of the two diluents tested, nitrogen showed a stronger effect in reducing the pressure rise rate compared to helium. This indicated that the explosion hazard can be reduced by adding hydrocarbon or dilution to lower the pressure rise rate of syngas/air flame.
AB - In this study, explosion behaviors of hydrocarbon-added and diluted syngas/air mixtures were investigated experimentally in a constant volume combustion chamber. Hydrocarbons such as methane and propane, and diluents, such as helium and nitrogen, were added to a syngas/air mixture to evaluate the effects of hydrocarbon and dilution on the explosion characteristics of flames. The results showed that for hydrocarbon additions, both the maximum explosion pressure and the explosion time increased linearly with the hydrocarbon concentration, while the maximum rate of pressure rise decreased nonlinearly, which can be correlated to an exponential equation. It was observed that propane had a stronger effect on reducing the pressure rise rate than methane did. With dilutions, the maximum explosion pressure decreased linearly and the explosion time increased linearly, so the pressure rise rate was significantly reduced. An exponential correlation of pressure rise rate and dilution ratio was observed. Of the two diluents tested, nitrogen showed a stronger effect in reducing the pressure rise rate compared to helium. This indicated that the explosion hazard can be reduced by adding hydrocarbon or dilution to lower the pressure rise rate of syngas/air flame.
KW - Deflagration index
KW - Explosion
KW - Rate of pressure rise
KW - Syngas
UR - http://www.scopus.com/inward/record.url?scp=85030645823&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2017.09.046
DO - 10.1016/j.ijhydene.2017.09.046
M3 - Article
AN - SCOPUS:85030645823
SN - 0360-3199
VL - 42
SP - 27416
EP - 27427
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 44
ER -