Ignition temperature of magnesium powder clouds: A theoretical model
Ignition temperature of magnesium powder clouds: A theoretical model
复制标题
镁粉云的着火温度：理论模型
DOI：
10.1016/j.jhazmat.2012.08.081
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发表时间：
2012-11-15
影响因子：
13.6
通讯作者：
Zhang Peihong
中科院分区：
文献类型：
--
作者：
Yuan Chunmiao;Li Chang;Zhang Peihong
在采取防爆措施时，粉尘云的最低着火温度（MIT-DC）是一个重要的考虑因素。本文提出了一种在模拟Godbert-Greenwald（GG）炉的条件下确定镁粉云最低着火温度的模型。该模型基于金属颗粒的非均相氧化和牛顿运动定律，同时将颗粒尺寸、粉尘浓度和粉尘分散压力与MIT-DC相关联。该模型预测值与实验数据非常吻合，特别是在预测颗粒通过炉管时的温度和速度变化时非常有用。(C)2012爱思唯尔有限公司版权所有。
Minimum ignition temperature of dust clouds (MIT-DC) is an important consideration when adopting explosion prevention measures. This paper presents a model for determining minimum ignition temperature for a magnesium powder cloud under conditions simulating a Godbert-Greenwald (GG) furnace. The model is based on heterogeneous oxidation of metal particles and Newton's law of motion, while correlating particle size, dust concentration, and dust dispersion pressure with MIT-DC. The model predicted values in close agreement with experimental data and is especially useful in predicting temperature and velocity change as particles pass through the furnace tube. (C) 2012 Elsevier B.V. All rights reserved.