溶剂处理对沥青球氧化稳定化的影响研究  

INFLUENCE OF SOLVENT IMMERSION ON THE OXIDATIVE STABILIZATION OF PITCH SPHERES

作　　者：吕春祥[1] 刘春林[1] 乔文明[1] 李开喜[1] 吴东[1] 刘朗[1] 凌立成[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室

出　　处：《新型炭材料》2001年第1期15-18,共4页New Carbon Materials

基　　金：国家高技术研究和发展项目!( 863 715 0 0 2 0 192 ) ;国家自然科学基金!( 5 0 0 72 0 3 6)&&

摘　　要：研究了溶剂处理时间、温度等条件对石油沥青球和煤沥青球的收率、氧化破损率及氧化稳定化效果的影响。结果表明 :在室温下用烷烃类浸泡沥青球 ,可以有效地除去沥青球中的萘和轻组份 ,打通氧气向内扩散的通道 ,缩小沥青球表面和内部氧化反应程度差别 ,促进沥青球的快速均匀不熔化 ;提高溶剂处理温度 ,容易刻蚀球表面 ,影响球的外观和强度 ;较低软化点的石油沥青球比煤沥青球表面更易于刻蚀更难于氧化稳定化。The coal tar pitch spheres and petroleum spheres were immersed by alkyl hydrocarbon solvent. The infulence of immersion time and temperature on the yield, breakage and stabilization result of pitch sphere were studied. The results showed that small molecules were effectively removed by immersing pitch spheres with alkyl hydrocarbon solvent at room temperature. The path of oxygen diffusion was obtained and the oxidation difference between surface and center of pitch spheres was minimized, so the stabilization speed was accelerated. If pitch spheres were immersed at higher temperature, their surface would be eroded. The coal tar pitch spheres was easy to be stabilized compared with the petroleum pitch spheres when they had similar softening point and naphthalene content.

关 键 词：沥青球 氧化稳定化 溶剂处理 收率 

分 类 号：TQ522[化学工程—煤化学工程]