Understand that a single equilibrium flash splits a feed into a vapor enriched in the more volatile component and a liquid depleted in it, and that vaporizing more of the feed (higher vapor fraction) progressively strips the light component out of the remaining liquid.
Liquid, x
0.414Vapor, y
0.586Equilibrium: y = α·x / (1 + (α−1)·x)Mass balance: zF = f·y + (1−f)·xf = vapor fraction (V/F), α = relative volatilityWith the default values, confirm the vapor composition y is greater than the feed zF, and the liquid composition x is less than zF.
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