Catalytic cracking: Prediction of fresh catalyst product distribution.
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In a catalytic cracking unit, the catalyst activity index is primarily used to predict the product distribution of the newly added catalyst (fresh catalyst), under the assumption that all other factors remain constant – including the catalyst addition rate, displacement rate, reaction conditions, the properties of the feedstock, and other operational parameters – thereby allowing for an early assessment of the operation and yield of the unit Of course, the manufacturer and batch remain unchanged, and there generally isn’t much variation in the product distribution. But as a technical specialist, I think it’s important to be prepared in advance, so as to avoid situations where significant fluctuations in device operation occur without an identifiable cause, especially before receiving new batches of catalysts.
Generally, catalysts of the same model do not differ much from each other; as long as the properties of the raw materials remain stable, the activity of the balancing agents is maintained, the heavy metal content is low, and there are no strict requirements regarding the addition rate； The product yield will not experience significant changes either.