Catalyst makeup strategies

A model which is consistent with the chemistry described previously has been developed to predict the performance of ZSM-5 in an FGG unit. Application of this model allows the user to take full advantage of ZSM-5 s flexibility for specific applications. The model has been used in many commercial applications to determine the catalyst makeup rate required to achieve a given octane boost. It has also been used to tailor the catalyst makeup strategy to obtain a desired octane boost in a given period of time. 

One of the main applications of the ZSM-5 performance model is to determine the optimal catalyst makeup strategy to achieve a desired octane boost in a required period of time. Since ZSM-5 is used primarily as an additive, the catalyst makeup policy can be tailored to fit the refiner s needs. 

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