The absorption rate issue in the absorber tower in delayed coking

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I’m currently working on a presentation. The client (who doesn’t seem very familiar with actual production processes) has requested that I determine the absorption rate of the absorption tower and the desorption rate of the desorption tower. I searched on Baidu as well as checked the DCS systems in two actual factories, but found no indication of such absorption or desorption rates. I would like to ask everyone: do absorption rates and desorption rates really exist in delayed coking processes? As I understand it currently, the absorption rate is equal to ((Total moles per hour of components with C3 and higher in the rich gas) – (Total moles per hour of components with C3 and higher in the lean gas)) / (Total moles per hour of components with C3 and higher in the rich gas); in other words, absorption rate = (M – N) / M. The desorption rate, on the other hand, is equal to (Total moles per hour of components with C3 and lower at the top of the desorption tower) / (Total moles per hour of components with C3 and lower in the equilibrium gasoline). I hope the experts will kindly provide their guidance