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Consequence modelling of a dust explosion

机译：尘埃爆炸的后果模型

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A dust explosion is a serious hazard in process industries where combustible dust is handled. Dust explosion commonly occurs in a confined space such as a silo, a vessel or a warehouse. Based on industrial accidents involving a dust explosion, it may cause death, injuries and property damage. Therefore, a practical approach for integrated risk management of dust explosion hazards is required. This research focuses on the development of a spreadsheet tool for predicting the severity of dust explosion. The consequence modelling is required to enable the assessment of risk associated with dust explosion. Various published models were studied for initial work of consequence modelling. Parameters considered were the dust deflagration index (K_(st)), the maximum explosion pressure (P_(max)), the maximum rate of pressure rise (dP/dt)_(max) and the laminar burning velocity (S_(1bv)). Reliable value for these dust explosion parameters have been tabulated based on closed vessel laboratory tests. A case study of dust explosion involving maize starch in closed vessel was used to test and validate the developed consequence modelling tool. The modelling result was discussed by comparing the predicted value against experimental value. The spreadsheet tool that was developed in this work can be used for the purpose of risk management of a facility associated with dust explosion hazards. It can be used to assist the application to combustion suppressant agent and design of explosion venting to prevent and mitigate the consequence of dust explosion.
机译：在处理可燃粉尘的过程工业中，粉尘爆炸是严重的危害。粉尘爆炸通常发生在狭窄的空间内，例如筒仓，船只或仓库。基于涉及粉尘爆炸的工业事故，可能会导致死亡，受伤和财产损失。因此，需要一种实用的方法来对粉尘爆炸危险进行综合风险管理。这项研究的重点是用于预测粉尘爆炸严重程度的电子表格工具的开发。需要进行后果建模以评估与粉尘爆炸有关的风险。研究了各种已发布的模型，用于结果建模的初始工作。考虑的参数为粉尘爆燃指数（K_（st）），最大爆炸压力（P_（max）），最大升压速率（dP / dt）_（max）和层流燃烧速度（S_（1bv） ）。这些粉尘爆炸参数的可靠值已根据密闭容器实验室测试制成表格。以玉米淀粉在密闭容器中爆炸为例，对所开发的后果建模工具进行了测试和验证。通过将预测值与实验值进行比较，讨论了建模结果。这项工作中开发的电子表格工具可用于与粉尘爆炸危险相关的设施的风险管理。它可用于辅助应用在燃烧抑制剂和防爆设计上，以防止和减轻粉尘爆炸的后果。

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