Fresh Molar Feed Rate Formula:
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Definition: Fresh Molar Feed Rate gives the number of moles of fresh reactant being fed to the reactor per unit time.
Purpose: It helps chemical engineers determine the amount of fresh reactant needed in a reactor system with recycle streams.
The calculator uses the formula:
Where:
Explanation: The total feed rate is divided by (recycle ratio + 1) to determine the fresh feed component.
Details: Accurate calculation ensures proper reactant stoichiometry, optimal reactor operation, and efficient use of resources in chemical processes.
Tips: Enter the total molar feed rate in mol/s and the recycle ratio (dimensionless). Total feed rate must be > 0 and recycle ratio ≥ 0.
Q1: What is the recycle ratio?
A: The recycle ratio is defined as the volume of feed returned to the reactor entrance divided by the volume of the leaving streams.
Q2: Why do we need to calculate fresh feed separately?
A: In systems with recycle streams, the fresh feed must be calculated separately to maintain proper material balance and reaction stoichiometry.
Q3: What units should be used for the inputs?
A: Total molar feed rate should be in moles per second (mol/s), while recycle ratio is dimensionless.
Q4: Can the recycle ratio be zero?
A: Yes, a recycle ratio of zero means there's no recycle stream, making fresh feed equal to total feed.
Q5: How does this relate to overall reactor design?
A: Fresh feed calculation is crucial for determining reactor size, residence time, and overall process efficiency.