Maximum Gas Flowrate Formula:
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Definition: This calculator determines the maximum gas flowrate that can be treated in an absorption column based on liquid flowrate and mole fractions.
Purpose: It helps chemical engineers design absorption columns by calculating the maximum gas flowrate that can be effectively processed.
The calculator uses the formula:
Where:
Explanation: The formula calculates the maximum gas flowrate that can be processed while maintaining the desired separation efficiency.
Details: Proper calculation ensures the absorption column operates within its capacity limits while achieving the required separation of components.
Tips: Enter the liquid flowrate, mole fractions, and equilibrium constant. All values must be ≥ 0, with YN+1 and α > 0.
Q1: What is solute free basis?
A: It means the mole fractions are calculated excluding the solvent (carrier gas or liquid).
Q2: How do I determine the equilibrium constant (α)?
A: α is typically determined experimentally or from vapor-liquid equilibrium data for the specific system.
Q3: What if I get a negative result?
A: Check your input values - the denominator (YN+1/α - X0) should be positive.
Q4: What are typical values for YN+1 and Y1?
A: YN+1 depends on feed concentration (often 0.1-0.9), while Y1 is the target purity (often 0.01-0.1).
Q5: How does liquid flowrate affect the maximum gas rate?
A: Higher liquid flowrates generally allow for higher maximum gas rates, as more solvent is available for absorption.