Monte Carlo simulation-based dust secondary explosion risk prediction method

Abstract

The invention discloses a Monte Carlo simulation-based dust secondary explosion risk prediction method, which specifically comprises the following steps of: testing and analyzing physicochemical characteristic parameters and dust explosion parameters of dust through an experiment, and then setting a FUEL file required by simulation; A dust explosion module of simulation software FLACS is used forsimulating the dynamic change of a flow field structure of dust explosion in a limited space, and the distribution condition of the temperature and the dust concentration of the dust explosion is analyzed in combination with dust ignition characteristic parameters, so that risk factor data is provided for risk characterization; Monte Carlo simulation is applied to carry out probability distribution fitting on risk factor data of dust explosion, uncertainty and sensitivity analysis is carried out on a risk result by constructing a prediction variable function, and the uncertainty risk of secondary explosion of dust and probability distribution of the uncertainty risk are predicted. And the establishment of the dust secondary explosion risk prediction model is of great significance to the control of dust explosion and explosion safety production.

Description

technical field [0001] The invention relates to the technical field of dust explosion risk prediction, and in particular proposes a method for predicting dust secondary explosion risk based on Monte Carlo simulation, which can be applied to the prevention and control of dust explosion in industrial production. Background technique [0002] In powder industrial production, the dust removal system and the production device are basically connected through the dust removal pipe network. After the dust collector explodes, the shock wave will propagate along the dust removal pipe network, affecting adjacent units and forming a domino accident. One or even multiple consecutive dust explosions lead to the expansion of the severity of the accident consequences and the formation of environmental and safety risks. [0003] For enterprise safety managers, understanding the dust explosion risk profile of the enterprise, what risk factors affect the dust explosion risk level, and how to r...

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Problems solved by technology

[0004]The existing research on the characteristics of dust explosions is relatively mature, and there are also some related to the damage caused by the explosion energy to the surrounding mechanical equipment, buildings, etc., and the casualties However, there are few risk probability evaluation models for dust secondary explosion research of the domino effect, and the establishment of risk probability evaluation models for these disastrous accidents has important theoretical and practical significance for scientific prevention of accidents and disasters

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