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Definition: This calculator determines the adjusted retention time (space time) for component 2 in vessel i of a series of mixed flow reactors of different sizes.
Purpose: It helps chemical engineers design and analyze reactor systems where multiple mixed flow reactors are connected in series.
The calculator uses the formula:
Where:
Explanation: The difference in concentrations between consecutive vessels divided by the reaction rate gives the space time needed for the reaction to occur.
Details: Accurate space time calculation ensures proper reactor sizing, optimal reaction conditions, and efficient production rates in chemical processes.
Tips: Enter the reactant concentrations in consecutive vessels and the reaction rate for vessel i. All values must be positive, with reaction rate > 0.
Q1: What is space time in chemical reactors?
A: Space time is the time required to process one reactor volume of feed at specified conditions.
Q2: Why use multiple reactors in series?
A: Series configuration allows for different conditions in each reactor, potentially improving conversion and selectivity.
Q3: How does this differ from plug flow reactors?
A: Mixed flow reactors have uniform composition throughout, while plug flow reactors have concentration gradients along the length.
Q4: What if my reaction rate is negative?
A: Reaction rates are typically positive for reactant consumption. Negative values might indicate product formation rate.
Q5: How do I determine the reaction rate?
A: Reaction rates are determined experimentally or from kinetic studies of the specific reaction.