TEXTBOOK USED

1. Smith, C.A. and Corripio, A.B. (2006). Principles and Practice of AutomaticProcessControl (3rded.). John Wiley &Sons.

CHAPTER COVER

1.0 Introduction to chemical process control

Objective of process control automation

Merits and demerits of process automation

Industrial applications

2.0 Process and Instrumentation Diagram

2.1 Standard P&ID Drawing

2.2 Construction P&ID of chemical processes

3.0 Control Elements

3.1 Sensors and transmitters

3.2 Controller

3.3 Signal

1. A first order exothermic irreversible reaction from A Bis taken place in Continuous Stirred Tank Reactor (CSTR) is shown in Figure 1. The quality of the reactor product will meet the product specification when the temperature inside CSTR is maintained at 110C. a. Illustrate the piping and instrumentation diagram (P&ID) for an automatic control system of CSTR to control the temperature in achieving the quality of reactor product. The standard ISA instrumentation symbols must be implemented. Reactor feed Coolant outlet Coolant inlet CSTR Pump Reactor product Figure 1. CSTR Diagram b. Describe and label the controlled variable (CV), manipulated variable (MV), set point (SP) and disturbance (D) in your control system shown in 1(a) c. The range of calibrated temperature sensor of CSTR is 50C to 200C. 100% signal is transmitted to controller for control system in 1 (b). Unexpectedly, the heat supply by the coolant is cut off and the product quality is decreased. After checking, the signal transmitter reads at 6mA. As a control engineer, you are required to estimate the equivalent signal received by the controller in % and current temperature inside CSTR