煤炭转化2011，Vol.34Issue(4)：20-24,5.
氢气在无催化煤液化中的反应机理
REACTION MECHANISM OF HYDROGEN FOR DIRECT COAL LIQUEFACTION WITHOUT CATALYSTS
摘要
Abstract
In this paper,the solubility of hydrogen in naphthalene was measured by using vapor-liquid phase equilibrium sampling method. The reaction mechanism of hydrogen for direct coal liquefaction was investigated by liquefaction of Yanzhou coal using a 17 mL tubular resonance agitation microautoclave reactor. The results show:l) that hydrogen solubility in naphthalene increases with the increase of temperature and hydrogen partial pressure, and the solution rate o-verall appears first quick back slow trend. Hydrogen solubility within 5 min has reached 76. 21% of the maximum under certain temperature and hydrogen partial pressure, then it continues to increase slowly and achieves the maximum for 30 min; 2) that the control step of coal liquefaction without catalyst in naphthalene is not the solution rate of hydrogen but the reaction rate of dissolved hydrogen participating in liquefaction; 3) that hydrogen pre-solution in naphthalene increases the total conversion of shorter coal liquefaction without catalyst, which is because partial dissolved hydrogen was activated in pre-solution process, resulting in the increase of active hydrogen in the initial stage of liquefaction reaction;4) that hydrogen pre-solution in naphthalene has a little contribution for the total conversion of longer coal liquefaction without catalyst, but it promotes the further hydrocracking and upgrading of liquefaction products.关键词
氢气/煤液化/溶解规律/预溶氢/反应机理Key words
hydrogen/ coal liquefaction/ hydrogen pre-solution/coal liquefaction/ reaction mechanism分类
化学化工引用本文复制引用
罗化峰,凌开成,张卫帅,王顺华,冯伟,申峻..氢气在无催化煤液化中的反应机理[J].煤炭转化,2011,34(4):20-24,5.基金项目
国家自然科学基金资助项目(20776094,21076137)和山西省自然科学基金资助项目(2009011010-2). （20776094,21076137）
