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)

	A
	B
	C	0

 

(a) CSTR

1. Mole Balance/Design Equation

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

 

PFR

5. Evaluate

If v₀ = 10 m³/s

V = 2944 dm³

 

(b), (c), (d) No answer will be given.