M8.4. Effect of Reactor Scale
In this section we study the effect of reactor size on the steady-state and dynamic behavior of the reactor. Each reactor is designed with a residence time of 15 minutes, with a desired conversion of 50% (CA = 0.066 lbmol/ft3), resulting in a reactor temperature of 101.1°F.
Reactor Scale
Consider now the following reactors, operated at 85% of the design volume.
| Reactor Volume (nominal) | 100 ft3 | 5000 gallon (668 ft3) |
| Heat transfer area | 88 ft2 | 309 ft2 |
| Diameter | 4 ft | 7.5 ft |
| Operating Volume, V | 85 ft3 | 500 ft3 |
| Operating Flowrate, F | 340 ft3/hr | 2000 ft3/hr |
| UA | 6600 Btu/hr °F | 23200 Btu/hr °F |
Problem M8.2 Steady-State Jacket Temperatures
Find the steady-state jacket temperatures for the 100 ft3 and 5000 gallon reactors.
Solution: Substituting ...
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