【摘要】 对大庆、胜利、孤岛三种减压渣油,进行四组份分离后,测定了各组份的~1H核磁共振波谱、红外光谱、分子量和元素组成。将Brown-Ladner法与Haley法结合起来并加以适当的补充,对试验原始数据进行处理。所得参数能近似地反映各组份在化学结构上的差别。试验结果表明,胶质和沥青质组份的结构单元重均在800～1000左右,与分子量无关。三种渣油中,孤岛渣油的f_A和f_N最高,f_P最低。更多还原

【Abstract】 Each of the vacuum residua from Daqing, Shengli, and Gudao crudes was first separated into four fractions by the fourcomponent method. All fractions thus obtained were examined by ~1H-NMR and IR spectroscopy and subject to the mean molecular weight and element composition determination. The resulting data were processed by a simplified Haley’s method in combination with a modified Brown-Ladner’s method. The parameters obtained might approximately reflect the difference in chemical structure of each fraction. The unit structure weights of resins and asphaltenes were found to be in the range of 800-1000 and basically independent of molecular weights. Among the three residua, that from Gudao crude had the highest values of f_A and f_N and the lowest of f_P.更多还原