沥青－重油共炭化反应机理的研究Ⅰ．原料沥青和共炭化沥青的结构

STUDY ON THE MECHANISM OF CO-CARBONIZATION OF PITCH-HEAVY OIL BLEND Ⅰ.STRUCTURE ANALYSIS OF REW PITCH AND CO-CARBONIZED PITCH

使用一种工业重质油和中温煤焦油沥青进行共炭化反应，改善了煤沥青的炭化性质。利用核磁共振（ＮＭＲ）手段详细研究了共炭化反应前后沥青ＴＳ（甲苯可溶）组分的结构变化，发现共炭化反应使沥青中的环烷及链烷烃含量增加，烷烃结构尤其是环烷结构的丰富是导致沥青改性的主要原因。

The structure change of medium coal tar pitch(MCTP) during co-carbonization was investigated by using NMR. It was found that co-carbonized pitch contains morenaphthenic group and alkyl substituents in comparison with parent MCTP. The carboniza-tion property of MCTP was improved by co-carbonization of pitch-heavy oil blend,Therather rich aliphatic groups formed through co-carbonization should be the main reason ofMCTP modification.