Study on Ignition and Flame Spread Characteristics of Micron and Nano Titanium Dust Layers

doi:10.12068/j.issn.1005-3026.2020.01.024

Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (1): 137-142.DOI: 10.12068/j.issn.1005-3026.2020.01.024

• Resources & Civil Engineering • Previous Articles Next Articles

Study on Ignition and Flame Spread Characteristics of Micron and Nano Titanium Dust Layers

CAI Jing-zhi¹， YUAN Chun-miao¹， MENG Fan-yi¹， LI Chang²

1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China; 2. School of Civil Engineering， Shenyang Jianzhu University， Shenyang 110168， China.

Received:2019-03-25 Revised:2019-03-25 Online:2020-01-15 Published:2020-02-01
Contact: YUAN Chun-miao
About author:-
Supported by:
-

Abstract

Abstract: In order to understand the layer fire hazard of fine titanium powders， the minimum ignition temperature(MIT) and flame spread velocity(FSV) of micron and nano titanium dust layers were studied by using standard hot plate test device and self-made dust layer flame spread experimental device. The applicability of thermal explosion theory model and FSV model was verified. The results showed that the minimum ignition temperature of titanium dust layer decreases with the decrease of particle size， and the MIT of 33μm titanium powder and 60~80nm titanium powder dust layer are >400℃ and 230℃， respectively， which are basically in consistent with calculation results of Thomas model. The fire hazard of titanium powder layer is greatly affected by particle size. The experimental results showed that the FSV of the dust layer of micron and nano titanium powder are 13.60 and 500.57mm/s， respectively， which are larger than those calculated by the theoretical model. The results can be used as reference for fire safety evaluation and industrial fire protection design of fine titanium powder.

Key words: micron scale, nano scale, titanium powder, layer fire, dust explosion

CLC Number:

X932

CAI Jing-zhi， YUAN Chun-miao， MENG Fan-yi， LI Chang. Study on Ignition and Flame Spread Characteristics of Micron and Nano Titanium Dust Layers[J]. Journal of Northeastern University Natural Science, 2020, 41(1): 137-142.

References

[1]Qian M，Froes F H.Titanium powder metallurgy:science，technology and applications［M］.Oxford:Butterworth-Heinemann，2015.
[2]徐志超，王迪，史庆南，等.国内钛粉应用现状［J］.材料导报，2017，31(29):70-77.(Xu Zhi-chao，Wang Di，Shi Qing-nan，et al.Titanium powder application situation in China［J］.Materials Reports，2017，31(29):70-77.)
[3]Eckhoff R K.Dust explosions in the process industries［M］.3rd ed.Boston:Gulf Professional Publishing，2003.
[4]Boilard S P，Amyotte P R，Khan F I，et al.Explosibility of micron- and nano-size titanium powders［J］.Journal of Loss Prevention in the Process Industries，2013，26(6):1646-1754.
[5]Li G，Yang H X，Yuan C M，et al.A catastrophic aluminium-alloy dust explosion in China［J］.Journal of Loss Prevention in the Process Industries，2016，39:121-130.
[6]Wu D J，Norman F，Verplaetsen F，et al.Experimental analysis of minimum ignition temperature of coal dust layers in oxy-fuel combustion atmospheres［J］.Procedia Engineering，2014，84:330-339.
[7]钟英鹏，刘庆明，李蓓，等.镁粉尘层最低着火温度实验研究［J］.消防科学与技术，2018，37(1):18-21.(Zhong Ying-peng，Liu Qing-ming，Li Bei，et al.Experimental study on minimum ignition temperature of magnesium dust layer［J］.Fire Science and Technology，2018，37(1):18-21.)
[8]Jaskolkowski W，Ptak S，Laskowski A，et al.Effects of particle size on minimum ignition temperature of dust layers and dust clouds of selected wood dusts［J］.Forestry and Wood Technology，2014，86:138-143.
[9]Wu D J，Schmidt M，Huang X Y，et al.Self-ignition and smoldering characteristics of coal dust accumulations in O₂/N₂ and O₂/CO₂ atmospheres［J］.Proceedings of the Combustion Institute，2017，36(2):3195-3202.
[10]Gummer J，Lunn G A.Ignitions of explosive dust clouds by smouldering and flaming agglomerates［J］.Journal of Loss Prevention in the Process Industries，2003，16(1):27-32.
[11]杨红霞，李刚，苑春苗，等.油页岩粉尘层着火的理论模型与实验研究［J］.东北大学学报(自然科学版)，2016，37(12):1768-1771.(Yang Hong-xia，Li Gang，Yuan Chun-miao，et al.Theoretical model and experimental study on the ignition of oil shale dust layer［J］.Journal of Northeastern University(Natural Science)，2016，37(12):1768-1771.)
[12]Kudo Y，Kudo Y，Torikai H，et al.Effects of particle size on flame spread over magnesium powder layer［J］.Fire Safety Journal，2010，45(2):122-128.
[13]Yuan C M，Amyotte P R，Hossain M N，et al.Minimum ignition temperature of nano and micro Ti powder clouds in the presence of inert nano TiO₂ powder［J］.Journal of Hazardous Materials，2014，275:1-9.
[14]Polka M，Salamonowicz Z，Wolinski M，et al.Experimental analysis of minimal ignition temperatures of a dust layer and clouds on a heated surface of selected flammable dusts［J］.Procedia Engineering，2012，45(3):414-423.
[15]Yuan C M，Huang D Z，Li C，et al.Ignition behavior of magnesium powder layers on a plate heated at constant temperature［J］.Journal of Hazardous Materials，2013，246:283-290.
[16]Yuan C M，Cai J Z，Amyotte P R，et al.Fire hazard of titanium powder layers mixed with inert nano TiO₂ powder［J］.Journal of Hazardous Materials，2018，346:19-26.
[17]Gao W，Zhang X Y，Zhang D W，et al.Flame propagation behaviours in nano-metal dust explosions［J］.Powder Technology，2017，321:154-162.
[18]Winter M.Web elements periodic table［EB/OL］.(1993-09-01)［2019-02-17］.http://www.webelements.com/.
[19]U.S.Department of Commerce.NIST chemistry webbook［EB/OL］.(2018-10-01)［2019-02-17］.http://webbook.nist.gov/chemistry/.
[15]关守平，房少纯.一种新型的区间-粒子群优化算法［J］.东北大学学报(自然科学版)，2012，33(10):1381-1384.(Guan Shou-ping，Fang Shao-chun.A new particle swarm optimization algorithm［J］.Journal of Northeastern University(Natural Science)，2012，33(10):1381-1384.)

Study on Ignition and Flame Spread Characteristics of Micron and Nano Titanium Dust Layers

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 8

Recommended Articles

Metrics

Comments

[1]	LI Gang， LIU Zong-yang， CHANG Wei-da， ZHANG Xiao-yu. Experimental Study on Ignition and Explosion of Carbon Material Dust [J]. Journal of Northeastern University(Natural Science), 2023, 44(2): 298-304.
[2]	LI Gang， KANG Jin， CUI Zhen， HU Peng. Functional Experiment and Simulation Study of Explosion Isolation Flap Valves [J]. Journal of Northeastern University(Natural Science), 2021, 42(8): 1166-1173.
[3]	LI Gang， CUI Zhen， HU Peng， NI Lei. Propagation Law of Dust Explosion in Double-Sided Branch Structure Pipes [J]. Journal of Northeastern University(Natural Science), 2021, 42(5): 734-740.
[4]	LI Gang， ZHANG Xiao-yu， HUANG Ting-chuan， ZHANG Yang-yang. Experiment and Simulation of Dust Explosion Propagation in Tapered Pipelines [J]. Journal of Northeastern University(Natural Science), 2021, 42(11): 1634-1640.
[5]	LI Gang， HU Peng， ZHANG Yang-yang， NI Lei. Propagation Law of Dust Explosion in Complex Bend Pipes [J]. Journal of Northeastern University Natural Science, 2020, 41(9): 1316-1320.
[6]	BU Ya-jie， YUAN Chun-miao， HAO Jian-tao， LI Chang. Electric Spark Ignition Delay Time of Dust Clouds [J]. Journal of Northeastern University Natural Science, 2018, 39(11): 1658-1662.
[7]	YU Li-fu， LI Gang， PAN Chao， YUAN Chun-miao. Experimental Research on China’s Oil Shale Dust Explosibility [J]. Journal of Northeastern University Natural Science, 2016, 37(8): 1203-1206.
[8]	YU Jian-liang， YAN Xing-qing. Reliability of Dust Explosion Venting Standards Under Elevated Static Activation Overpressures [J]. Journal of Northeastern University:Natural Science, 2015, 36(9): 1316-1320.