National Yunlin University of Science and Technology (NYUST) Process Safety and Disaster Prevention Laboratory, Department of Safety, Health, and Environmental Engineering Touliu, Yunlin Taiwan 64002 123, University Rd., Sec. 3, Touliu, Yunlin Taiwan 64002 123, University Rd., Sec. 3,
Nursing and Management Jen-Teh Junior College of Medicine Houlong, Miaoli Taiwan 35664 1, Jin-Ten Rd. Houlong, Miaoli Taiwan 35664 1, Jin-Ten Rd.
research investigated the influence of binary solutions of benzene and methanol
for their vapor flammability characteristics. The different mixing ratios
(100/0, 75/25, 50/50, 25/75 and 0/100 vol%) samples were injected into a 20-liter
spherical explosion vessel under various initial temperatures (100, 150 and
200C) to study their flammability behaviors. According to the experimental
results, the flammability diagram of mixtures can be completely illustrated
and combined with specific safety-related properties such as lower explosion
limit (LEL), upper explosion limit (UEL), minimum oxygen concentration (MOC),
maximum explosion overpressure (Pmax),
and gas or vapor deflagration index (Kg).
The experimental results showed that the UEL, Pmax
and Kg all increased
with the temperature, pressure and oxygen concentration, whereas there was
no significant variation on the part of LEL. The results can provide specific
information on fire and explosion hazards for related industries.