Confusion regarding dew point (condensation) and partial pressure
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Mixed components are in one tank; for example, a mixture of propane and ethane, or methane. At a pressure of 10 kilograms, at what temperature does propane begin to condense? How is this calculated? Is it the dew point temperature of propane at its partial pressure? Is it still the propane dew point temperature at 10 kilograms? Thank you, many thanks for the advice!
This involves looking at the saturated vapor pressure of each individual component at different temperatures, and comparing it to its partial pressure in the mixture at the same temperature; if the partial pressure is equal to or greater than its saturated vapor pressure, then that component will condense.
It should be the dew point temperature of propane at its partial pressure
It should be possible to calculate it using the dew point equation in distillation
First, determine the volume fractions of various gases, calculate their respective partial pressures, and the gas that condenses first is the one at its partial pressure’s dew point temperature