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6.0 Include the control element that you need to install in operating the reactor and specify your justification
a. What is the transfer function for the reactor?
In the pyrolysis reaction we have chosen, the fluidized bed reactor consists of an electrical heater which is used to maintain the desired temperature in the reactor.
Thus, the transfer function for the temperature control is as follows:
Thus, the transfer function for the temperature control is as follows:
B. What is the order of the transfer function?
The order of the transfer function is first order.
c. Identify the control variable(s), manipulated variable(s), and possible disturbance variable(s) for the reactor.
Controlled Variables (CV) : Compositions of Bio-Oil, BioChar and Permanent Gas
: Mass Flow Rate of Bio-Oil, BioChar and Permanent Gas (kg/hr)
Manipulated Variables (MV) : Rate of Biomass Feed Flow (kg/hr)
Disturbance Variables (DV) : Process Operating Temperature
: Process Operating Pressure
:The presence of catalysts
: Mass Flow Rate of Bio-Oil, BioChar and Permanent Gas (kg/hr)
Manipulated Variables (MV) : Rate of Biomass Feed Flow (kg/hr)
Disturbance Variables (DV) : Process Operating Temperature
: Process Operating Pressure
:The presence of catalysts
D. What type of control algorithm (P, PI, or PID controllers) would you use? Why?
In our pyrolysis technology, we recommend PID controller to be use. For PID controller, oscillation is reduced and hence there will not be steady state which is also known as offset. PID controller also reduces response time, which then corrects the error signal once it is detected. Here, the response can be improved by increasing the derivative time. It will reduce the maximum deviation, response time and also the oscillatory.