Lecture 21. Chemical Reaction Engineering (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place. Today’s lecture. CSTR With Heat Effects Multiple Steady States Ignition and Extinction Temperatures.
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Chemical Reaction Engineering (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place.
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We obtain after some manipulation:
Collecting terms with and high coolant flow rates, and
If G(T) > R(T) TemperatureIncreases
If R(T) > G(T) TemperatureDecreases
At Steady State
Solving for X.
Solving for X
Solving for T
Variation of heat removal line with inlettemperature.
Variation of heat removal line with κ (κ=UA/CP0FA0)
2) Rate Law:
Variation of heat generation curve with space-time.
Temperature ignition-extinction curve
Stability of multiple state temperatures
Need to solve for X after combining mole balance rate law and stoichiometry.
For a first order irreversible reaction
Thenplot G and R as a function of T.