On explosion-limit regime diagram of H2 and C1 to C3 alkanes with unified pivot state

Liu, Jie; Yu, Ruiguang; Liang, Wenkai; Law, Chung K.

doi:10.1016/j.combustflame.2023.112705

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…The mechanism of the inert medium-aided explosion inerting is based on reducing the oxygen content, thereby minimizing the heat release rate of the chemical reaction, which greatly reduces the reaction heat. The inerting effect of each inert gas is dependent on the consumption of different free radicals . Nitrogen, as the primary component of air, can be easily obtained through air separation units using cryogenic distillation in industries, such as metallurgy, energy, and chemical industries .…”

Section: Introductionmentioning

confidence: 99%

“…The inerting effect of each inert gas is dependent on the consumption of different free radicals. 18 Nitrogen, as the primary component of air, can be easily obtained through air separation units using cryogenic distillation in industries, such as metallurgy, energy, and chemical industries. 19 Therefore, in the disposal of flammability gas leaks and inerting protection applications, nitrogen is commonly used as a dilution inert additive, which can be responded to in many engineering applications, including nitrogen generators in the aircraft fuel tank inert system, nitrogen inerting protection for a clear process of storage tanks.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Flammability Limits Behavior of Methane, Ethane, and Propane with Dilution of Nitrogen

et al. 2023

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The dilution inerting process of multi-component flammable gaseous mixtures is an important emergency disposal technology that has been widely applied in the explosion-proof field of flammability gases (vapors). In this study, we examined the flammability limits (LFLs and UFLs) of mono and binary alkane mixtures of methane, ethane, and propane when nitrogen is used for dilution inerting. The HY12474B explosion limit test device was used to determine the flammability limits, and the obtained data were compared with the literature data and Chatelier's law. Additionally, the sensitivity coefficient of the chemical reaction chain for LFLs and UFLs of the binary alkane mixtures was analyzed. The minimum inerting concentration (MIC) of methane was found to be sequentially higher than that of ethane and propane when using nitrogen for dilution inerting, and the MIC of the binary alkane mixtures follows the rule of methane/ethane > methane/propane > ethane/propane. Chemical kinetics calculation revealed that the maximum positive sensitivity coefficient of methane/ethane, methane/propane, and ethane/propane are both R5 H + O 2 ↔ O + OH, and the reaction with the maximum negative sensitivity coefficients are both R34 H + O 2 (+M) ↔ HO 2 (+M) and R43 CH 3 + H(+M) ↔ CH 4 (+M), respectively. The limiting oxygen concentration (LOC) for both mono alkane and binary alkane mixtures ranged between 10 and 13%. The region of the triangular flammability diagram for methane and ethane was greater than the regions for methane/ethane and methane/propane. In contrast, propane had a smaller region compared to other mono alkane or binary alkane mixtures.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%