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.
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 ...