煤炭转化2012，Vol.35Issue(2)：1-5,5.
中低阶煤热解过程中自由基的研究
STUDY ON FREE RADICALS IN LOW RANK COAL PYROLYSIS PROCESS
摘要
Abstract
In order to study the rule of free radical changes, free radicals in coal at different temperatures (350 'C-600 ℃), different holding times(0 min-30 min) were measured by u-sing EPR. The results show that the EPR method is rapid and direct; the determination of free radical concentration in coal based on standard curve method is more accurate; the radical change rule of coals that from different places is consistency, but its absolute value of initial free radicals concentration is difference, the initial free radical concentration of Shengli coal is 3. 034 6× 1018/g, and reached the maximum value 26. 686 0× 1018/g at 550 ℃, 10 min, Xinjiang coal initial free radical concentration is 15. 283×101B/g, and reached the maximum value of 57. 537×1018/g at 600 ℃, 10 min; this method can provide theoretical basis for the further study of coal pyrolysis mechanism and improvement of the light tar yield.关键词
顺磁共振/自由基/中低阶煤/热解/标准曲线法Key words
EPR/free radical/low rank coal/coal pyrolysis/standard curve method分类
化学化工引用本文复制引用
吴爱坪,潘铁英,史新梅,周丽芳,刘瑞民,张德祥,高晋生..中低阶煤热解过程中自由基的研究[J].煤炭转化,2012,35(2):1-5,5.基金项目
国家重点基础研究发展规划(973)项目(2011CB201304)、国家高技术研究发展计划(863)项目(2006AA05Z314)和国家自然科学基金资助项目(20576039). （973）
