Experimental Study on Explosion Characteristics of Micro-nano Tapioca Starch Mixture

Ruichong Zhang ； Chengyu Xie ； Lei Liu

《International Core Journal of Engineering》 8卷9期 (2022/09) Pp. 145-155

https://doi.org/10.6919/ICJE.202209_8(9).0021

摘要

In order to study the basic explosion characteristics of the mixture of micro-nano tapioca starch, the minimum ignition energy, the minimum ignition temperature of dust cloud, the minimum ignition temperature of dust cloud, the minimum ignition temperature of dust cloud, the dust cloud ignition temperature measurement equipment and the 20L spherical explosion test equipment were used for the dust samples respectively. Experiment with the explosiveness of . The results show that when the fixed ignition delay is 100ms and the injection pressure is 100Kp, with the increase of mass concentration, injection pressure and ignition delay time, the minimum ignition energy first decreases and then increases. With the same mass and different injection pressures, from 0.2 grams to 0.6 grams, the ignition temperature decreases first and then increases with the increase of injection pressure. The explosion pressure increases first and then decreases under different ignition delay time, dusting pressure and dust concentration. At the same time, compared with pure micron dust, the explosion intensity of micro-nano tapioca starch mixture is higher than that of micron dust at low concentration, and it is not obvious at high concentration, but the explosion index of micro-nano mixed dust is slightly higher than that of micron dust.

關鍵字

Micro-nano ； Mixed Tapioca Starch ； Explosive Properties

參考文獻

C.Proust. Flame Propagation and Combustion in some Dust-Air Mixtures[J].Journal of Loss Prevention in the Process Industries,2006,19(1):89-100.

C.Proust.A Few Fundamental Aspects About Ignition and Flame Propagation in dust clouds[J].Journal of Loss Prevention in the Process Industries,2006,19(2-3):104-120.

F.D.Tang, S.Goroshin, A.J.Higgins.Modes of Particle Combustion in Iron Dust Flames[J].Proceedings of the Combustion Institute,2011,33(2)1975-1982.

O.S.Han,M.Yashima,T.Matsuda, etal. A Study of Flame Propagation Mechanisms in Lycopodium dust Clouds Based on Dust particles Behavior[J].Journal of Loss Prevention in the Process Industries,2001, 14(3):153-160.

O.S.Han,M.Yashima,T.Matsuda, etal.Behavior of Flames Propagating through Lycopodium dust Clouds in a Vertical duct [J]. Journal of Loss Prevention in the Process Industries,2000,13(6):449-457.