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高温颗粒引燃转炉煤气的实验研究

DOI: 10.3969/j.issn.1005-3026.2015.09.027, PP. 1342-1346

Keywords: 高温颗粒,转炉煤气,激光加热,粒径,引燃温度

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Abstract:

为分析转炉煤气显热回收过程中被高温颗粒引燃危险性,自行设计了激光辐射加热氧化铁颗粒引燃转炉煤气实验平台.以转炉煤气/空气混合物压力及温度变化为引燃判据,研究不同初始温度及粒径颗粒引燃混合物的规律.结果表明,转炉煤气/空气混合物存在引燃敏感浓度,当受辐射颗粒粒径相同、初始温度为100℃时混合物敏感浓度比35℃时上升了5%;初始温度为35,100,200℃时,粒径1.5mm的颗粒引燃温度比0.5mm的分别下降137.6,145及134.5℃;颗粒粒径为0.5,1.0及1.5mm时,初始温度为200℃时的引燃温度比35℃时分别下降了19.8,11.6及16.7℃.研究结果对高温转炉煤气进入换热器前设置除尘粒径限制具有参考意义.

References

[1]  岑可法,姚强,骆仲泱,等.高等燃烧学[M].浙江:浙江大学出版社,2002:32-68.(Cen Ke-fa,Yao Qiang,Luo Zhong-yang,et al.Advanced combustion theory[M].Zhejiang:Zhejiang University Press,2002:32-68.)
[2]  Li G,Shang R X,Yu Y J,et al.Influence of coal dust on the ignition of methane/air mixtures by friction sparks from rubbing of titanium against steel[J].Fuel,2013,113:448-453.
[3]  Bennett J M.Ignition of combustible fluids by heated surface[J].Process Safety Progress,2001,20(1):29-36.
[4]  Thomas H,Dubaniewicz J,Kenneth L, et al.Ignition of methane-air mixtures by laser heated small particles[J].Journal of Loss Prevention,2000,13(3/4/5):349-359.
[5]  Beyrau F,Hadjipanayis M A,Lindstedt R P.Ignition of fuel/air mixtures by radiatively heated particles[J].Proceedings of the Combustion Institute,2013,34(2):2065-2072.
[6]  Kuznetsov G V,Strizhak P A.Transient heat and mass transfer at the ignition of vapor and gas mixture by a moving hot particle[J].International Journal of Heat and Mass Transfer,2010,53(5/6):923-930.
[7]  Kuznetsov G V,Strizhak P A.Numerical solution of the problem of a combustible liquid by a single hot particle[J].Combustion Explosion and Shock Waves,2009,45(5):543-550.
[8]  海彦合.矿井下连续波激光点燃瓦斯的研究[J].光子学报,1998,27(4):352-355.(Hai Yan-he.Research on ignition of gases by continuous wave laser under the mine[J].Acta Photonica Sinica,1998,27(4):352-355.)
[9]  Wierzba I,Kilchyk V.Flammability limits of hydrogen-carbon monoxide mixtures at moderately elevated temperature[J].Hydrogen Energy,2001,26(6):639-643.
[10]  Cammarota F,Benedetto A D,Russo P,et al.Experimental analysis of gas explosions at non-atmospheric initial conditions in cylindrical vessel[J].Process Safety and Environmental Protection,2010,88(5):341-349.
[11]  Ciccarelli G,Jackson D,Verreault J.Flammability limits of NH3-H2-N2-air mixtures at elevated initial temperatures[J].Combustion and Flame,2006,144(1/2):53-63.
[12]  European Committee for Standardization.BS EN 1839:2003.determination of explosion limits of gases and vapors[S].British:Standards Policy and Strategy Committee,2004.
[13]  金朝.高温冶金炉煤气爆炸特性研究[D].沈阳:东北大学,2013.(Jin Chao.Experimental research on explosion characters of metallurgical gases in high temperatures[D].Shenyang:Northeastern University,2013.)

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