Does anyone know what the octane rating of gasoline produced by the MIP process is?
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We have adopted the newly modified MIP process; it was said during the design phase that the octane rating of gasoline would increase slightly, but in reality the octane rating dropped by two percentage points. There is no solution to this issue at the moment. If anyone has any advice, I’d appreciate it. I’m wondering if other MIP plants also experience such a problem
The MIP process reduces olefins by adding a second reaction zone, while increasing isomerization and condensation reactions. The reduction in olefins leads to a decrease in the octane rating of gasoline. By taking into account the octane ratings of all the components used in gasoline blending, efforts should be made to minimize the reduction in olefins; as long as the olefin content in the final gasoline product does not exceed the specified limits. Octane-boosting additives can be added to gasoline, and a higher octane rating can thereby be achieved.
MIP technology can be understood as a platform, and its overall performance depends on the interaction between operating conditions and catalysts. It is inherently sensitive to the raw materials; as long as the properties of the raw materials under design conditions are similar to those in actual operation, it is relatively easy to make adjustments. 1. The catalyst activity should be controlled appropriately, around 63 ； 2. The operating conditions should be brought close to the operating point recommended by the design ； The two mentioned above complement each other; it is not possible to rely on just one of them. You can talk about your first inversion temperature, second inversion temperature, second inversion retention volume, feed rate, and atomization steam volume (total steam volume), as well as catalyst activity (while also specifying whether it is a specialized catalyst and its manufacturer). That way we can discuss further.
This post was last edited and replied to by Heijin gold on 2012-1-18 at 09:57. Reply to 3# zhouqxhpc: We currently keep the reaction temperature at 500 degrees, while the temperature in the second reaction stage is 490 degrees. The amount of material used in the second reaction stage is 3 tons. The steam used for gas lift and dry gas is 6.5 t/h, and the steam used for atomization is 11 t/h. The residue content is around 30%, with a feed rate of 210 t/h. The catalyst used is a specialized MIP catalyst; previously, an olefin-reduction catalyst was used for a while, with an activity level of 63
It is recommended to increase the reaction temperature. After the modifications, the MON value increased slightly, while the RON value dropped by 2 points, which affected the blending and delivery of gasoline; however, after adjustments, the RON value rose back above 93.
It seems that the RON of MIP may not necessarily increase; MON should see an improvement, while the RON of another process, MIP-CGP, will experience a significant rise.