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This is the data you take from the plant actual operation. If tower is aleady sized in design mode, pressure drop can be calculated based upon feed rate and compositions of bottom and overhead streams. From your question, I see it only as two equilibrium flash calculations.

It does not look as valid process measurement - steam fow rate or refrigerant flow (at least they look like most suspicious ones).

From the first start-up of olefin alkylation plant, we are faced with very frequent plugging and bursting of fresh H2SO4 dozing lines, which causes severe process upsets. In such circumstances, fresh acid is routed to the contactor vessel through "fresh acid fill" piping (which normally serves...