The influence of dust originating from carbon black nanopowders on the explosion characteristics of lean methane/air mixtures within a turbulent environment

Kylafis, Georgios F.; Tomlin, Alison S.; Sleigh, Andrew; Lawes, M.; Vignes, Alexis

doi:10.1016/j.jlp.2018.06.003

Cited by 4 publications

(1 citation statement)

References 33 publications

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“…This study concluded that the explosion severity of polyethylene/ethylene hybrid mixture steeply increases as the gas concentration and particle size increase to 15 g/m 3 and 125 μm, beyond which P max and (d p /d t ) ex steadily decrease. Kylafis et al 21 and Torrado et al 22 studied the influence of dust originating from carbon black nanopowders on the explosion characteristics of lean methane/air mixtures within a turbulent environment and the influence on the front flame velocity of methane/air explosions. Ji et al 23 investigated the vented hybrid mixture explosions of lycopodium dust and methane and found that adding methane to lycopodium dust led to increase maximum explosion pressure and the maximum rate of pressure rise, and a decrease in the optimum dust concentration.…”

Section: Introductionmentioning

confidence: 99%

Influences of methane and propane on the explosion characteristics of polymethyl methacrylate and acrylonitrile butadiene styrene dusts

Cheng

Zhang

et al. 2021

Process Safety Progress

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Polymethyl methacrylate (PMMA) and acrylonitrile butadiene styrene copolymers (ABS) are widely applied to industrial production, with the risk of explosion mixed with combustible gas increasing gradually. A 20 L spherical explosive device was used to study the variation pattern of the explosion characteristics of four gas-dust mixtures: methane/PMMA, methane/ABS, propane/PMMA, and propane/ABS mixtures.The results showed that despite adding methane and propane, PMMA and ABS dusts within the range of minimum explosion concentration are still likely to explode. The comparative analysis shows that propane is more chemically reactive than methane and PMMA and ABS dusts mixed with propane are more dangerous than those mixed with methane. Meanwhile, it was found that as the concentration of methane and propane increases, the maximum explosion pressure P max , maximum explosion pressure rise rate (dP/dt) max , and explosive index K of the dusts rise as well, but the increasing trend remains steady. The single-phase methane and propane have higher maximum explosion pressure and explosive index than the gas-dust mixture, with the lowest maximum explosion pressure and explosive index found in the singlephase PMMA and ABS dusts. With methane and propane mixed, the explosion hazard of PMMA and ABS dusts is intensified from St1 to St3. This study reveals the explosion characteristics of PMMA and ABS dusts, providing a basis for ensuring a safe working environment, preventing and controlling explosion accidents, and reducing the destructiveness of accidents.

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Section: Introductionmentioning

confidence: 99%