Mole Fraction Formula:
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Definition: This calculator determines the mole fraction of the more volatile component (MVC) in the residue stream of a distillation column using an overall component material balance.
Purpose: It helps chemical engineers and process designers analyze and optimize distillation column performance.
The calculator uses the formula:
Where:
Explanation: The formula represents an overall material balance for the more volatile component around the distillation column.
Details: Accurate determination of residue composition is crucial for product quality control, energy efficiency, and column design.
Tips: Enter all flowrates in mol/s and mole fractions as dimensionless numbers between 0 and 1. The sum of distillate and residue flowrates should equal feed flowrate.
Q1: What is MVC in distillation?
A: MVC stands for More Volatile Component - the component with lower boiling point that concentrates in the distillate.
Q2: What if my xW result is negative?
A: Negative values indicate impossible conditions - check that your inputs satisfy material balance (F×xF ≥ D×xD).
Q3: Can this be used for multi-component systems?
A: No, this applies only to binary systems. For multi-component systems, use more advanced methods.
Q4: What assumptions does this calculation make?
A: It assumes steady-state operation and no chemical reactions in the column.
Q5: How accurate is this calculation?
A: It's exact for the given inputs, but actual column performance may vary due to non-ideal behavior.