Reaction Rate Formula:
From: | To: |
Definition: This equation calculates the reaction rate of reactant A in a gas-liquid-solid catalytic system where reactant B is in excess (extreme B conditions).
Purpose: It helps chemical engineers determine the reaction rate in multiphase catalytic systems, accounting for mass transfer resistances in all phases.
The calculator uses the formula:
Where:
Explanation: The formula accounts for resistances in gas film, liquid film, catalyst film, and reaction kinetics.
Details: Accurate reaction rate calculation is crucial for reactor design, process optimization, and scaling up chemical processes.
Tips: Enter all required parameters with appropriate units. Default values are provided for reference but should be adjusted based on your specific system.
Q1: What does "extreme B" mean in this context?
A: It means reactant B is present in such excess that its concentration remains essentially constant during the reaction.
Q2: How do I determine the Henry's Law constant for my system?
A: The Henry's Law constant can be found in chemical engineering handbooks or determined experimentally for your specific gas-liquid system.
Q3: What's the difference between inner and external area of particle?
A: Inner area refers to the surface within pores, while external area is the outer surface of the catalyst particle.
Q4: How does solid loading affect the reaction rate?
A: Higher solid loading (more catalyst) typically increases reaction rate, but too much can cause mass transfer limitations.
Q5: What if my system doesn't have all these resistances?
A: For simpler systems, set the corresponding terms to very large numbers (effectively eliminating their resistance).