Study of Minimum Ignition Temperature of Beech Wood Dust Clouds Using Different Types of Dispersers

Combustible dust in the form of a layer or dust cloud occurs very often in industry, and under certain conditions this dust can ignite from a hot surface. This combustible dust is also often found in the woodworking industry. The minimum ignition temperature (MIT) of a dust cloud from a hot surface is determined in accordance with EN ISO/IEC 80079-20-2:2016 Explosive atmospheres Material characteristics. Combustible dust test methods. According to this standard, the device for determining the MIT of dust cloud does not have precisely defined design parameters. This paper deals with the measurement of the MIT of a dust cloud from a hot surface on a device with two design solutions - an older disperser type and a new cone type. The minimum ignition temperatures of wood dust samples using both dispersers are compared.