【作者】 赵江平； 东淑；

【Author】 ZHAO Jiangping;DONG Shu;College of resources engineering, Xi’an University Of Architecture And Technology;

【机构】 西安建筑科技大学资源工程学院；

【摘要】 为了减少木材加工企业粉尘爆炸事故的发生,采用标准Goldberg-Greenwald恒温炉和热板测试装置研究粉尘粒径、粉尘云浓度、喷粉压力、堆积厚度对三种木粉尘最低着火温度的影响。结果表明:相同测试条件下,三种粉尘云的最低着火温度均随粉尘粒径的减小而降低,随粉尘云质量浓度和喷粉压力的增加先降低后增高;同时,三种粉尘层的最低着火温度随着粉尘粒径的减小以及堆积厚度的增加均呈现下降趋势。此外,三种粉尘云的最低着火温度都比粉尘层高,其中柏木粉最高、松木粉次之、桑木粉最低。本文用这三种木材作对比实验,为木材加工企业选择防爆电器提供了一定的数据支撑。更多还原

【Abstract】 In order to reduce the occurrence of dust explosion accidents in wood processing enterprises, the standard Godbert-Greenwald constant temperature furnace and hot plate test device were used to study the effects of dust particle size,dust cloud concentration, dusting pressure and stacking thickness on the minimum ignition temperature of several wood dusts.The results show that under the same test conditions, the minimum ignition temperature of the three dust clouds decreases with the decrease of dust particle size, and then decreases with the increase of dust cloud mass concentration and dusting pressure. At the same time, the three dust layers The minimum ignition temperature showed a downward trend with the decrease of dust particle size and the increase of bulk thickness. In addition, the minimum ignition temperature of the three dust clouds is higher than that of the dust layer, with the highest cedar powder, the second pine powder and the lowest mulberry powder. This paper uses these three kinds of wood as contrast experiments, which provides some data support for wood processing enterprises to choose explosion-proof electrical appliances.更多还原