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早在激光技术发展的初期,煤的激光裂解研究已引起人们的兴趣.直到目前为止,在这一激光裂解研究中,主要是利用红宝石、钕玻璃等脉冲固体激光器作为裂解光源.一般结论是:在激光脉冲作用下,煤可以有效地发生裂解,其产物分布则由于激光加热的快速性以及等离子体生成,而和一般加热裂解产物分布有明显差异.但是,由于煤的组成甚为复杂,而且类似品位的煤样也会因取样不同、产地不同而有明显的差别.因而在类似的实验中不同的作者往往得到不同,甚至相互矛盾的结果.例如:N.E.Vanderborgh等的实验结果表明,在惰性气氛(He)和还原性气氛中激光裂解煤的气相低分子量产物分布并无明显不同.然而A.G.Sharkey等在用红
Early in the development of laser technology, the research on laser pyrolysis of coal has aroused people’s interest.Up to now, in this laser pyrolysis research, mainly using pulsed solid-state lasers such as ruby and neodymium glass as the pyrolysis light source.The general conclusion is: Under the action of laser pulse, coal can be cracked effectively, and its product distribution is obviously different from that of general pyrolysis products due to the rapid laser heating and plasma generation.But due to the complexity of coal composition and Similar grades of coal samples will also vary significantly from sample to sample and from place of production, so different authors often find different and even conflicting results in similar experiments.Examples of NE Vanderborgh et al. There was no significant difference in gas phase low molecular weight product distribution between the atmosphere (He) and the laser pyrolyzed coal in a reducing atmosphere, however AGSharkey et al.