Research on effect of NH4H2PO4 on minimum ignition temperature of sucrose dust cloud

doi:10.16265/j.cnki.issn1003-3033.2019.12.011

Abstract

Abstract: In order to explore the suppression effect of NH₄H₂PO₄ on the ignition and combustion of sucrose dust cloud, MIT and combustion process of NH₄H₂PO₄-sucrose mixed dust cloud were studied by Godbert-Greenwald furnace apparatus. The experimental results show that the MIT of sucrose dust cloud, which mass concentration of1 363.6, 1 818.2, 2 272.7 and 2 727.3 g/m³ respectively, is 787, 805, 880 and 745 ℃ when the mass fraction of NH₄H₂PO₄ reaches 50%, 55%, 60%, 40% respectively, that the sucrose dust cloud is completely inert with further increasing the mass fraction of NH₄H₂PO_4,that NH₄H₂PO₄ can effectively inhibit the ignition and combustion of sucrose dust cloud, and that the smaller the particle size of NH₄H₂PO₄ is, the more obvious the inhibition effect on the combustion flame of sucrose dust cloud will be.

Key words: sucrose dust cloud, minimum ignition temperature (MIT), NH₄H₂PO₄, suppression effect, inert dust

CLC Number:

X932

QIN Xiaoling, LI Xiaoquan. Research on effect of NH₄H₂PO₄ on minimum ignition temperature of sucrose dust cloud[J]. China Safety Science Journal, 2019, 29(12): 66-71.

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Research on effect of NH₄H₂PO₄ on minimum ignition temperature of sucrose dust cloud

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