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[摘要]：The catalytic cracking performances of vacuum gas oil (VGO), vacuum residue (VR), and their mixtures with different blend ratios of VR (R-0) were investigated in a fixed fluidized bed reactor. The results indicate that a competitive adsorption effect developed between VGO and VR and further retarded VGO cracking. In accordance with the results and analysis of their reaction characteristics, a conceptual catalytic cracking process was proposed, and simulation experiments were carried out in a technical pilot scale riser (TPSR) apparatus. The results show that, compared with routine residue fluid catalytic cracking (RFCC), the competitive adsorption effect could be alleviated to some extent, and higher conversion and more desirable products could be obtained. Moreover, the balance of hydrogen for the products indicates that the decrease in coke and heavy cycle oil (HCO) at the optimal reaction conditions of the conceptual catalytic cracking process led to more hydrogen in the feed being distributed into the desired products. |
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