QIN Wenjing1，XIAO Qiuping1,2,3，LI Liangjun1，CHEN Wanghua2
(1.Shanghai Research Institute of Chemical Industry Co.，Ltd, Shanghai 200062，China; 2. Shanghai Engineering Research Center of Chemicals Public Safety, Shanghai 200062, China; 3. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094，China)
Abstract: The explosion sensitivity and severity parameters of epoxy powder coatings with different particle sizes under different mass concentration and spray pressure were studied using 20 L sphere, Hartmann tube and Godbert-Greenwald (G-G) furnace. The results show that the lower explosion limit (LEL)is nonmonotone with the increasing of particle size, and LEL is 30～40 g/m3. The explosion pressure increases first and then decreases with the increase of concentration. The particle size has no significant effect on the maximum explosion pressure, but the maximum pressure rise rate decreases with the increasing of the particle size. The minimum ignition temperature (MIT) of dust cloud and minimum ignition energy (MIE) of dust cloud increase monotonously with the increasing of particle size, while the MIT decreases with the increasing of powder injection pressure.
Keywords: epoxide powder coating; explosion severity; explosion sensitivity; hazard assessment; semi-quantitative
中图分类号：X932
文献标志码：A
文章编号：1008-5548(2019)01-0081-06
DOI:10.13732/j.issn.1008-5548.2019.01.014
收稿日期： 2018-10-10，修回日期：2018-11-08，在线出版时间：2018-12-26 16:45。
基金项目：上海市国资委企业技术创新和能级提升项目，编号：2016003; 上海市科学技术委员会资助项目，编号：17DZ2200600。
第一作者简介：秦文静(1994—)，女，硕士研究生，研究方向为安全工程。E-mail：qwjsrici@163.com。
通信作者简介：肖秋平(1984—)，男，博士，高级工程师，研究方向为安全工程。E-mail：xqp@ghs.cn。
