
Type 8 Home Problem
Problems that challenge assumptions.
In Homogeneous Example 7, we calculated the conversion of a membrane reactor, assuming that there was no pressure drop. In this problem, we will investigate pressure drop in our system, and determine it's effect (if any) on conversion.
The following gas phase reaction takes place in a membrane reactor:
Once again, our membrane will allow product B to exit, but it will retain reactant A and product C.
Given:
F_{Ao} = 10 mol/min y_{Ao} = 1 At T = 400 K At P = 10 atm 
V = 100 dm^{3} D = 3 in k_{B} = 0.5/min K_{C} = 10^{5} mol/dm^{3} k = 0.7/min 
X = ? F_{A} = ? F_{B} = ? F_{C} = ? 
Additional Information: m_{A} = m_{B} = m_{C} = 1.8 Pa*s
r_{A} = 0.0015 kg/dm^{3} r_{B} = 0.001 kg/dm^{3} r_{C} = 0.00125 kg/dm^{3} 
Rate Law: 
The membrane dimensions are similar to those of 16 BWG tubing.
Setup the Polymath solution to this problem. What is the exiting pressure of our reactor? What is the conversion of this reactor? Is it safe to assume that the effects of pressure drop are negligible?
Solution to Homogeneous Problem #8
Other Homogeneous Problems
1  2
 3  4
 5  6
 7  8
 9  10
CRE Thoughts Ten Types Homogeneous Example 8