减压瓦斯掺入超临界溶剂脱沥青油的催化裂化性能

CATALYTIC CRACKING PERFORMANCE OF VGO BLENDED DAO

利用实验室固定式流化床反应装置，考察了将孤岛渣油的超临界溶剂脱沥青油（ＤＡＯ）掺入到孤岛减压瓦斯油（ＶＧＯ）中对其催化裂化反应结果的影响．同时考察了两种裂化催化剂偏Ｙ－１５和ＲＨＺ－２００的不同性能，实验结果表明，掺入量为１０％时，其裂化性能较ＶＧＯ明显地变差；掺入量由１０％增大到２０％，其产品分布的差异表现不很明显，但焦炭产率明显增加，焦炭产率与ＤＡＯ的掺入量近似成直线关系．偏Ｙ－１５和ＲＨＺ－２００裂化性能的差异不很明显，但后者的焦炭选择性好，适用于重质原料．

The catalytic cracking behaviors of the VGO of Gudao and the mixture of VGO and DAO by supercritical fluid extraction from Gudao residue were studied in a confined fluidized bed reactor. Meta Y-15 and RHZ-200 Were used as the equilibrium catalysts. The experimental data show that addition of DAO to VGO by 10:100 deteriorates the yield structure distinctly. When the blending ratio of DAO:VGO increased from 10:100 to 20:100, the influence on the product distribution was not prominent as that of the blending ratio from 0 to 10 : 100. However, coke yield increased apparently, closely propotional to the amount of DAO. The results show that the coke selectivity of RHZ-200 is better than that of meta Y-15. RHZ-200 is more suitable for heavy oils. The experimental data can provide useful information for process design.