The effect of the MIP process on aromatics in catalytic LCO
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Hello, everyone! Will the MIP process affect the aromatic content in catalytic LCO? And how does it have an impact? Thank you!
It seems there will be an impact; LCO has a higher aromatic content and greater density.
Could you explain some of it in principle? Thank you
The riser of the MIП process is divided into 2 reaction zones. In this regard, the reaction conditions in the first reaction zone are high temperature, a high oil-to-catalyst ratio, and a short contact time – conditions that are more stringent than those used in conventional catalytic cracking. In this reaction zone, heavy feedstock oils are rapidly cracked to produce olefins, thereby reducing the formation of normal alkanes and cycloalkanes with low octane values ； The lift pipe diameter and height in the second reaction zone are both larger than those in the first reaction zone. The light hydrocarbons produced in the first reaction zone react in this zone, while a portion of the thermally regenerated catalyst that is circulated from the reaction settler to the second reaction zone lowers the reaction temperature there due to mixing with the cooling medium entering the second reaction zone, thereby prolonging the reaction time and enhancing hydrogen transfer and aromatization reactions. Based on the actual calibration data from the device, MIP light diesel has a high content of aromatics, low levels of saturated hydrocarbons and olefins, and an even lower cetane number, as some of the saturated hydrocarbons and olefins undergo hydrogen transfer and aromatization reactions in the second reaction zone. ??