SCALING OF STACKED MICROCHANNEL REACTORS
R.W.K. Allen, S. Hu and J.M. MacInnes
Chemical and Process Engineering
University of Sheffield
16 November 1999
The stacked channel reactor
For surface reaction within the microchannels
or 
Model Approach
Reactant channels:
Equation for bulk concentration
n 'th order reaction
Balance at channel wall
Control channels:
Balance between heat release and control fluid temperature rise
Scaling of reactor parameters
|
Parameter |
Small |
Large |
|
I |
|
|
|
L or W |
|
|
|
A |
|
|
|
N |
|
|
|
V |
|
|
An Application
Ethylene oxide production
Reactor dimensions for channel diameter of
10 mm to 100 mm channel (3.4 bar, 369°C)
|
|
LWH (m3) |
L (m) |
W(m) |
H(m) |
|
100 mm |
557000 |
11.9 |
3.17 |
1.47x 10-3 |
|
10 mm |
7650 |
0.139 |
0.0372 |
1.47x 105 |
|
1 mm |
28.40 |
0.00269 |
0.000719 |
1.47x 107 |
|
100 mm |
2.360 |
7.77x10-5 |
2.07x10-5 |
1.47x 109 |
|
10 mm |
0.2310 |
2.43x10-6 |
6.49x10-7 |
1.47x 1011 |
