1. What is Reactant Conversion for Zero Order Reaction?

Definition: Reactant conversion in mixed flow gives the percentage of reactants converted into products in a zero-order reaction system.

Purpose: This calculator helps chemical engineers determine the efficiency of a mixed flow reactor for zero-order reactions.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( X_{mfr} \) — Reactant conversion (decimal between 0 and 1)
• \( k_{mixed\ flow} \) — Rate constant for zero order reaction (mol/m³·s)
• \( \tau_{mixed} \) — Space time in mixed flow reactor (seconds)
• \( C_0 \) — Initial reactant concentration (mol/m³)

Explanation: The product of rate constant and space time divided by initial concentration gives the fractional conversion of reactants.

3. Importance of Reactant Conversion Calculation

Details: Accurate conversion calculations are crucial for reactor design, process optimization, and cost estimation in chemical manufacturing.

4. Using the Calculator

Tips: Enter the rate constant, space time, and initial concentration. All values must be positive numbers. The result will be a decimal between 0 (0%) and 1 (100%).

5. Frequently Asked Questions (FAQ)

Q1: What is a zero-order reaction?
A: A reaction where the rate is independent of the reactant concentration.

Q2: What is space time in reactor design?
A: The time required to process one reactor volume of feed at entrance conditions.

Q3: Can conversion exceed 1.0 in this calculation?
A: Mathematically yes, but physically conversion is capped at 1.0 (100%).

Q4: How does mixed flow differ from plug flow?
A: Mixed flow reactors have complete backmixing, resulting in uniform composition throughout.

Q5: What typical values for rate constants?
A: These vary widely depending on the reaction, from very small to large values.