Figure E16.26 shows cascade temperature control of a polymerization reactor, which uses feed heat exchange to adjust the reactor temperature. Using the instrumentation diagram, explain how this cascade control system (both master and slave components) handles the following disturbances and describe what happens to the reactor temperature. Assume normal temperatures of coolant (70^ˆ˜F), polymerization feed (200^ˆ˜F), exchanger effluent (100^ˆ˜F), and reactor outlet (800^ˆ˜F).
(a) Feed temperature becomes too high.
(b) Feed flow rate becomes too high.

Transcribed Image Text:

Master TC Slave ( TC Polymerizer Coolant TT TT Polymerizer feed Feed heat exchanger Figure E16.26