采用斑点试验及不稳定性参数试验方法对蒽油与沥青混合物加氢改质后的稳定性进行了考察,试验发现:两种比例得到的混合物相容性均较差;其中2号油[蒽油∶沥青=7∶3(质量比,下同)]不稳定性参数为45.51,1号油(蒽油∶沥青=1∶1)不稳定性参数为68.83,2号油相容性要优于1号油.经沸腾床加氢改质后,两种生成油的稳定性都得到改善,2号油不稳定性参数降低至23.71,1号油不稳定性参数降低至45.41.2号油生成油稳定性要优于1号油生成油稳定性,可以满足装置连续生产要求,而1号油生成油稳定性则仍相对较差,难以满足装置运转要求.混合体系相容性高低与不同原料的分子大小及极性差别有关;适度加氢有可能缩小不同原料的分子差异,继而增加相互之间的胶溶能力.%The stability of the mixture of anthracene oil and asphalt before and after hydrocracking was studied by Spot Test and Separability Number Test.The test results showed that the compatibility of two mixtures of two ratios is poor.The instability of 2# oil (anthracene oil∶ asphaltene =7∶ 3 (V/V)) is 45.51,and that of 1# oil (anthracene oil∶ asphaltene =1∶1 (V/V)) is 68.83.The stability of 2# oil is better than that of 1 # oil.After hydrocracking by ebulated-bed process,the stabilities of two oils have been improved.The instability of 2# oil is reduced to 23.71 while that of 1# oil is lowered to 45.41.The stability of 2# oil is better than that of 1 # oil,which can meet the requirement for continuous operation.Whereas the stability of 1 # oil is low,which is difficult to meet the requirement of operation.The compatibility of the mixed system is related to,the molecular weight and polarity of different feedstocks.The proper hydrotreatment can narrow the difference in the molecular weight of different feedstocks and improve their mutual peptizing power.
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