TY - JOUR
T1 - Coupling effects of venting and inerting on explosions in interconnected vessels
AU - Zhang, Qingwu
AU - Yu, Yuan
AU - Li, Yunhao
AU - Chen, Zhiquan
AU - Jiang, Juncheng
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/5
Y1 - 2020/5
N2 - The coupling effects of venting and CO2 inerting on stoichiometric methane-air mixture explosions were investigated in an isolated vessel and interconnected vessels. The results indicate that venting mitigates the explosion intensity, especially for small vessels. For vessels connected by pipes, a venting design following EN 14994 (2007) and NFPA 68 (2013) could not meet the venting requirements. For an isolated big vessel and interconnected vessels, increasing the CO2 volume fraction (Φ) from 0 to 15.0 vol% decreased the maximum explosion overpressure (Pmax) and maximum rate of overpressure rise ((dP/dt)max) and delayed tmax. For closed interconnected vessels, Pmax varied approximately linearly with Φ. For both isolated vessel and interconnected vessels, the coupling effects of venting and CO2 inerting on methane-air explosion were more efficient than those of individual mitigative method (that is, venting alone or CO2 inerting alone).
AB - The coupling effects of venting and CO2 inerting on stoichiometric methane-air mixture explosions were investigated in an isolated vessel and interconnected vessels. The results indicate that venting mitigates the explosion intensity, especially for small vessels. For vessels connected by pipes, a venting design following EN 14994 (2007) and NFPA 68 (2013) could not meet the venting requirements. For an isolated big vessel and interconnected vessels, increasing the CO2 volume fraction (Φ) from 0 to 15.0 vol% decreased the maximum explosion overpressure (Pmax) and maximum rate of overpressure rise ((dP/dt)max) and delayed tmax. For closed interconnected vessels, Pmax varied approximately linearly with Φ. For both isolated vessel and interconnected vessels, the coupling effects of venting and CO2 inerting on methane-air explosion were more efficient than those of individual mitigative method (that is, venting alone or CO2 inerting alone).
KW - CO inerting
KW - Interconnected vessels
KW - Maximum explosion overpressure
KW - Maximum rate of overpressure rise
KW - Methane-air explosions
KW - Venting
UR - http://www.scopus.com/inward/record.url?scp=85083308607&partnerID=8YFLogxK
U2 - 10.1016/j.jlp.2020.104132
DO - 10.1016/j.jlp.2020.104132
M3 - 文章
AN - SCOPUS:85083308607
SN - 0950-4230
VL - 65
JO - Journal of Loss Prevention in the Process Industries
JF - Journal of Loss Prevention in the Process Industries
M1 - 104132
ER -