Inerting effect of the combustion products on the confined deflagration of liquefied petroleum gas–air mixtures

Razus, Domnina; Brinzea, Venera; Mitu, Maria; Movileanu, Codina; Oancea, Dumitru

doi:10.1016/j.jlp.2009.03.002

Cited by 39 publications

(14 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… 34 In addition, in the aspect of LPG, Razus et al. 35 , 36 studied the deflagration characteristics of LPG. However, most studies focus on the effect of inert gas on the explosion characteristics of a single combustible gas, such as methane, but there are few studies on the deflagration of multicomponent combustible gas.…”

Section: Introductionmentioning

confidence: 99%

Effect of Inert Gas CO₂ on Deflagration Pressure of CH₄/CO

Luo

Yang

et al. 2020

ACS Omega

View full text Add to dashboard Cite

To study the effect of CO 2 on the explosion characteristics of CH 4 /CO, the explosion experiments of the effect of different volume fractions of CO 2 on CH 4 /CO deflagration were carried out by using the self-developed pipeline gas explosion experimental platform. The explosion characteristics of premixed gas are studied from the aspects of explosion peak pressure and time of reaching the peak pressure. The results show that the effect of CO on the deflagration of methane with a different volume fraction is the result of the interaction of the elementary reaction and the oxygen content in the reaction system. Two percent of the CO promoted the methane explosion in the oxygen-rich state, while it showed a damping effect in the oxygen-poor state. CO 2 has different inhibitory effects on different volume fractions of methane. Experiments show that the addition of 20% CO 2 can effectively inhibit the deflagration of methane. The addition of CO 2 has a stronger inhibitory effect on the mixed gas of CH 4 /CO under the condition of poor oxygen but less on the mixed gas under the condition of rich oxygen.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Inert Gas CO₂ on Deflagration Pressure of CH₄/CO

Luo

Yang

et al. 2020

ACS Omega

View full text Add to dashboard Cite

show abstract

“…MIE is the minimum energy to successfully ignite a combustible mixture, and is the key parameter which can be used to evaluate the explosion risk. MIE is the basic parameter to study the explosion of combustible gases. , In the past decades, the MIEs of combustible materials have been measured and studied using an experimental or numerical simulation method. − Unfortunately, there are no relevant studies on the MIE of combustible gases at lower temperatures and higher pressures which exist in the liquefied process of the oxygen-bearing CBM. As a consequence, the existing data of MIE cannot provide significant guidance for the safety operations of the CBM liquefied process.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Minimum Ignition Energy of Methane–Air Mixtures at Low Temperatures and Elevated Pressures

Chen

Yang

et al. 2016

Energy Fuels

View full text Add to dashboard Cite

Previous research results show that, at the top of the distillation column of the liquefied process of oxygen-bearing coal-bed methane (CBM), an explosion hazard may happen. The minimum ignition energy (MIE) of combustible gas reflects the sensitivity of the explosion. Although MIE has been experimentally and theoretically studied at normal or elevated temperatures, there are no relevant data aimed at the environment (low temperature and high pressure) which exists at the top of the distillation column. Therefore, in this study, the MIE of a methane−air mixture was tested using a low temperature experimental vessel in the low temperature (123−273 K) and pressure (0.1−0.9 MPa) ranges. Our research results show that MIE increases with the decrease in initial pressure P 0 or temperature T 0 . When the initial pressure is relatively low, both the initial pressure and temperature significantly affect the MIE. However, at higher initial pressure, the initial temperature and pressure have relatively smaller impact on MIE. The MIE linearly correlates to 1/P 0 2 , whereas it linearly correlates to 1/T 0 . With the decrease in initial temperature, the degree of the impact of initial pressure on MIE gets larger. Additionally, with the increase in initial pressure, the degree of the impact of initial temperature on MIE gets smaller. The changing rule of our experimental MIE with initial temperature and pressure shows good accordance with published results. The energy generated by the human body, collision between the metals, lightning, and external fire is higher than the MIE of methane at the top of the distillation column, which indicates that an explosion hazard may happen. Thus, corresponding safety measures should be taken.

show abstract

“…4 To prevent losses from the explosions of methaneair mixtures in underground coal mines, experimental, theoretical, and computational methods were extensively adopted by scholars to study the propagation characteristics of gas explosion. [5][6][7][8][9][10][11][12][13] Zipf et al 14 used a long tube (length, 73 m; diameter, 1.05 m) to study the deflagration-to-detonation transition of methaneair mixtures under the blockage ratios of 0.13, 0.25, and 0.50. They found that run-up length to DDT increased with the increasing of blockage ratios.…”

Section: Introductionmentioning

confidence: 99%

Effect of filling ratio on premixed methane/air explosion in an open-end pipe

Guo

Lin

Zhu

et al. 2016

International Journal of Spray and Combustion Dynamics

View full text Add to dashboard Cite

The propagation characteristics of premixed methane/air explosion under different filling ratios (20%, 30%, 40%, 50%, 60%, and 100%) were studied using an experimental system. The results indicate that the peak overpressure showed a decreasing trend at the initial stage but then showed an increasing trend until reaching its maximum value under different filling ratios. As the explosion propagated to the open end, the overpressure showed a downtrend. At this point, the flame speed initially increased along the pipe but then dropped dramatically. In addition, the explosion overpressure and flame speed increased with the increase of filling ratio. However, when the filling ratio reached 50%, the explosion overpressure and flame speed tended to be stable and the increase was not obvious. These results will be of great importance in evaluating the explosive damage to equipment and human personnel working in coal mines or other chemical industries.

show abstract

Inerting effect of the combustion products on the confined deflagration of liquefied petroleum gas–air mixtures

Cited by 39 publications

References 14 publications

Effect of Inert Gas CO₂ on Deflagration Pressure of CH₄/CO

Effect of Inert Gas CO₂ on Deflagration Pressure of CH₄/CO

Experimental Study of Minimum Ignition Energy of Methane–Air Mixtures at Low Temperatures and Elevated Pressures

Effect of filling ratio on premixed methane/air explosion in an open-end pipe

Contact Info

Product

Resources

About

Inerting effect of the combustion products on the confined deflagration of liquefied petroleum gas–air mixtures

Cited by 39 publications

References 14 publications

Effect of Inert Gas CO2 on Deflagration Pressure of CH4/CO

Effect of Inert Gas CO2 on Deflagration Pressure of CH4/CO

Experimental Study of Minimum Ignition Energy of Methane–Air Mixtures at Low Temperatures and Elevated Pressures

Effect of filling ratio on premixed methane/air explosion in an open-end pipe

Contact Info

Product

Resources

About

Effect of Inert Gas CO₂ on Deflagration Pressure of CH₄/CO

Effect of Inert Gas CO₂ on Deflagration Pressure of CH₄/CO