Chapter 5: Isothermal Reactor Design: Conversion
Example 5.2: Home Problem
The hydrolysis of acetic anhydride is to be carried out at 25°C.
The water and acetic anhydride are mixed immediately before entering the reactor where the entering steam is 7.8 wt % acetic anhydride (1M) and 92.2 wt % water (51.2M). The volumetric feed rate of liquid in 0.0033 dm3/s. A one minute video clip of this experiment is given on the CDROM.
Additional Information
(a) What conversion can be achieved in a 1 dm3 CSTR at 25°C?
(b) What conversion can be achieved in a0.311 dm3 PFR?
(c) What time is required to achieve 80% conversion in a batch reactor?
The 460 Experiment Hydrolysis of Acetic Anhydride (AH)
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(a) CSTR
1. Mole Balance
Rearranging
2. Rate Law
3. Stoichiometry liquid v = v0
4. Combine
5. Evaluate
The maximum available flow rate in the experiment is 
V = 1 dm3
(b) PFR
1. Mole Balance/Design Equation
2. Rate Law
3. Stoichiometry
4. Combine
V = 0 X = 0
5. Evaluate
(c) Batch Reactor
1. Mole Balance/Design Equation
2. Rate Law
3. Stoichiometry
Liquid
4. Combine
5. Evaluate
