Open AccessThe Influence of Ethylene Gas Concentration on LDPE/C2H4 Hybrid Explosion Process and its Severity
Author(s) -
H. Badli,
Siti Zubaidah Sulaiman,
Md. Noor Arifin,
N.H. Semawi,
Izirwan Izhab,
S. Shaarni,
Rohaida Che Man,
Siti Kholijah Abdul Mudalip,
Zatul Iffah Mohd Arshad
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/991/1/012119
Subject(s) - overpressure , low density polyethylene , deflagration , analytical chemistry (journal) , ignition system , bar (unit) , materials science , flammability limit , ethylene , adiabatic flame temperature , ignitor , thermodynamics , chemistry , combustion , composite material , detonation , explosive material , polyethylene , chromatography , combustor , organic chemistry , physics , catalysis , meteorology
The influence of ethylene (C 2 H 4 ) gas concentration on the LDPE dust hybrid explosion in a 20-L spherical vessel, equipped with a chemical ignitor was analysed for the determination of maximum explosion overpressure, P max and deflagration index, K G . The LDPEC 2 H 4 dust hybrid explosibility was evaluated based on the P max development, measured by the Kistler piezoelectric pressure transducer. The adiabatic flame temperature was calculated based on ideal gas law. It is speculated that the LDPE/C 2 H 4 explosion undergoes three-phase process, starting with the ignition, followed by flame growth and flame regression. The highest P max (17.9 bar) and flame temperature (5200 K) was obtained at flame growth phase, recorded at C 2 H 4 concentration of 3 vol/vol%. It was found that the P max and flame temperature is dependent on C 2 H 4 concentration. The calculated K G values in a range of 14 – 60 bar.m/ms obtained in this study, suggesting that the LDPE/C 2 H 4 dust hybrid explosion might subject to an extreme explosion characteristic.