Explosion parameters of methanol–air mixtures

Explosion Characteristics of Propanol Isomer–Air Mixtures

“…The maximum value of the explosion pressure was found at Φ = 1.06 for both volumes and all temperatures. The increase in the initial temperature lowers the explosion pressure, as discussed in [12]. At equivalence ratios close to the LEL and UEL, the values of pex/p0 decrease to the value close to initial pressure.…”

“…The values of p max 1-C 4 H 9 OH and 1-C 5 H 11 OH differ from other published data. In Table 6, for example, the values of p max for methanol adopted from [12] (7.1 bar and 8.2 bar) clearly appear to be quite different based on initial conditions (temperature, pressure, equivalence ratios). At the initial temperature, the value published by [14] was 5.6 bar, which is similar to value of 5.5 bar obtained by [13].…”

“…Explosion of vapors in closed vessel is a complex process involving fuel atomisation, vaporisation, mixing, ignition and combustion. To characterize this effect and to develop the effective explosion protection systems against overpressure the key closed-vessel deflagration characteristics are used: maximum explosion pressure, p max , maximum rate of pressure rise, (dp/dt) max and the deflagration index, K G [11][12][13][14][15][16].…”

“…Zhang et al presented a study on the explosion characteristics of methanol-air premixed mixtures in a 5.5 L cylindrical vessel for Φ = 0.7-1.8, with initial pressures of 0.1 MPa, 0.25 MPa, 0.5 MPa and three initial temperatures (373, 423, 473 K) [11]. Mitu and Brandes investigated the explosion parameters of methanol-air mixtures measured for initial temperatures of 50 • C and 150 • C and initial pressures of 75 kPa and 100 kPa and supplemented the measurements with a calculation for temperatures of 25 and 110 • C in a 5 L spherical stainless steel vessel [12]. Li et al conducted a series of experimental studies on the explosion characteristics of ethanol, 1-butanol, 1-pentanol, 2-pentanol and 3-pentanol with air mixtures at an initial temperature up to 200 • C and an initial pressure up to 0.75 MPa [13].…”

Measurement and Calculation of Explosion Pressure for Hydroxyl Substituted Hydrocarbons Mixture

“…It has been well established that studies concentrated on the low alcohols (ethanol, 1butanol, 1-pentanol, 2-pentanol and 3-pentanol) in small stainless cylinder vessel with a diameter of 180 mm and length of 210 mm [3]. An experimental study of the explosive combustion of methanol-air mixtures at various initial conditions (temperatures, pressures and fuel/air ratios within the explosion limits) was performed in a small 0.005 m 3 spherical stainless steel with central ignition [4]. The most recent study determined the maximum explosion pressures, the maximum rates of pressure rise, the severity factors and the maximum explosion delay time in two spherical vessels (volume: 0.005 m 3 and 0.020 m 3 ) for various ethanol/air mixtures (3.5-20.0 vol%) at various initial pressures (10.1 -101 kPa) and temperatures (298 -373 K) [5].…”