摘要
根据表观活化能的突跃性变化，煤直接液化过程可以划分为3个动力学阶段：初始高反应活性、慢速加氢和缩聚反应阶段．其根源是煤分子结构中桥键和芳键键能之间的突跃性变化．煤的高温快速液化就是让反应仪持续完初始高反应活性阶段（～5min）即终止的一种煤直接液化方法，液化温度由TG曲线所反映的活泼热分解温度上限（～500℃）来确定，要求煤粉与优秀供氢溶剂充分接触，并由此引出了“理想液化”的理论假设．最后探讨了煤高温快速液化在工业上和学术上可能的应用．
According to jumping changes in apparent activation energy, coal direct liquefaction process could be divided into three kinetic stages： namely initial high reactivity, slow hydrogenation and condensation stage. Its root is the jumping change in bond energy between bridge bonds and aromatic bonds in coal molecular structure. Quick liquefaction at high temperature （CQLHT） is a kind of coal direct liquefaction process in which reaction is terminated only processing through the initial high reactivity stage （ -5 min）. Reaction temperature is determined by the upper limit of active pyrolysis temperature reflected by TG curve （ - 500℃ ） , and the powdered coal is required to contact intimately with excellent hydrogen donor solvent. And the theoretical hypothesis of ideal liquefaction of coal is deduced hereby. At last, the possible application of CQLHT in industry and academy was discussed.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2007年第9期975-979,共5页
Journal of China Coal Society
关键词
煤
快速液化
高温
动力学阶段
理想液化
coal
quick liquefaction
high temperature
kinetic stages
ideal liquefaction
