兖州煤与渣油共处理制高等级道路沥青的研究

Coprocessing Yanzhou Coal with Petroleum Resid for Preparing Paving Asphalt

研究了兖州煤与 5种渣油共处理所得沥青的性质及其影响因素 .结果表明 ,实验条件下 ,渣油的种类对于共处理所得沥青性质有决定性的影响 .在所考察的 5种渣油中 ,石家庄催化裂化渣油由于具有较多的芳烃结构 ,且与兖州煤单独加氢制得的沥青在化学组成上的相似性 ,在与兖州煤共液化时 ,制得的沥青符合高等级道路沥青的基本指标 (软化点、针入度和延度 ) .在所考察的反应条件中 ,提高氢气压力可以提高高等级道路沥青的收率 ,而煤与渣油的配比 ,由于影响到沥青产物的化学组成分布 。

Coprocessing Yanzhou coal with five types of petroleum resid (slurry) for preparing high grade paving asphalt (HGPA) was investigated in an autoclave. The asphalt obtained was evaluated by 3 indexes (penetration, softening point and ductility). The thin layer chromatography (TLC) and NMR were used to characterize the asphalt. The result shows that the properties of resid are crucial for the quality of asphalt derived. Under experimental conditions, only coprocessing of coal with SLH slurry, which has lower H/C ratio, higher aromatics content and shorter aliphatic side-chain than that of the other four resids, can produce qualified asphalt, and meet the specification of high grade paving asphalt of China in three main properties. Under experimental conditions, a higher H 2 pressure can increase asphalt yield, but higher ratio of coal to resid (slurry) can lower the quality of asphalt.