摘要
利用强磁场对物质中电子运动的作用，从而影响到化学反应中原子之间键的结合的原理，对煤粒在着火和燃烧过程中受到磁场的作用进行了试验研究和分析。试验结果表明，磁场对煤的着火有明显的影响，在强度为０．８特斯拉的磁场作用下，煤粒温升加速，升温过程出现明显地阶跃现象。而在煤中加入５％的铁粉，在磁场作用下，升温过程仍出现阶跃现象，但煤粒着火过程的时间缩短。分析认为，由于参与化学反应的反应物和产物所显出的磁性不同，顺磁性物质、抗磁性物质或铁磁性物质之间的化学反应在磁场的作用下也会受到明显不同的影响。
お? The ignition process of coal affected by magnetic field are experimented and analysed.The results show that,magnetic field at 0.8 T impedes moisture in the coal particles to vapor before ignition,comparing with no magnetic field,because of H2O diamagnetic properties.After moisture vapor up,the oxidation rate of coal particle increases much more than no magnetic field,to its ignition and combustion.The process of rising temperature has obviously steps figure difference to smooth rising of no magnetic one.Add a 5% element Fe in the coal,with magnetic interacted,the time of moisture vapor process in coal is shortened.The results show that magnetic field prompts the coal ignition procedure.
出处
《燃烧科学与技术》
EI
CAS
CSCD
1998年第2期182-185,共4页
Journal of Combustion Science and Technology
关键词
磁场
煤
燃烧
着火
Magnetic field,Coal combustion,Ignition
