Assessment at dust explosion hazard of epoxy powder coatings
QIN Wenjing
XIAO Qiuping
LI Liangjun
CHEN Wanghua
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 coatingexplosion severityexplosion sensitivityhazard assessmentsemi-quantitative
Publication Date：2019-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 81-86 )