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Seeking a quick calculation formula for catalyst replacement in catalytic cracking units.

2007-12-06View Original

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Seeking a quick calculation formula for catalyst replacement in catalytic cracking units.
Reply #22007-12-06
Let the total storage amount be W (t), the daily replacement rate be S(d-1), the time be t(d), the initial proportion of the new agent be X0 (%), and the proportion after t days be Xt; then: ln((100-X0)/(100-Xt)) = st

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