ERT 422/4 Piping and instrumentation diagram ( P&id )

1. ERT 422/4 Piping and instrumentation diagram (P&id) MISS. RAHIMAH BINTI OTHMAN (Email: rahimah@unimap.edu.my)

2. QUIZ1 QUESTION 1: • Which of the following statements are true? • Feedback and feedforward control both require measured variable. • The process variable to be controlled is measured in feedback control. • Feedforward control can be perfect in the theoretical sense that the controller can take action via the manipulated even while the controlled variable remains equal to its desired value. • Feedforward control can provide perfect control; that is, the output can be kept at its desired value, even with an imperfect process model. • Feedback control will always take action regardless of the accuracy of any process model that was used to design it and the source of a disturbance. False/True False/True False/True False/True False/True

3. QUIZ1 QUESTION 2: Ethanol-water mixture is feed to a batch distillation column. This distillation process will produce ethanol vapour at the top product which then condensate to produce liquid ethanol which will be collected into a distillate product tank. The liquid ethanol and an acetic acid liquid from the acid feed tank are then feed to a reactor. An exothermic reaction process will be occurred to produce ethyl acetate (a type of ester). Draw BFD for this process.

4. BOILER PIPING AND INSTRUMENTATION DIAGRAM (P&ID) QUESTION 3: • Figure below shows the boiler system that used to supply hot steam to a turbine. This system need to supply 100 psi hot steam to the turbine where the PCV-100 will be opened when the pressure reached that desired pressure. With using pressure control through temperature measurement in the boiler, draw a feedforward loop control system. Hot steam Water PCV-100 Process variable need to be controlled = Pressure

5. QUIZ1 QUESTION 1: • Which of the following statements are true? • Feedback and feedforward control both require measured variable. • The process variable to be controlled is measured in feedback control. • Feedforward control can be perfect in the theoretical sense that the controller can take action via the manipulated even while the controlled variable remains equal to its desired value. • Feedforward control can provide perfect control; that is, the output can be kept at its desired value, even with an imperfect process model. • Feedback control will always take action regardless of the accuracy of any process model that was used to design it and the source of a disturbance. False/True False/True False/True False/True False/True

6. The Block Flow Diagram (BFD) Answer 1: Hot water out Condenser Ethanol liq. Reactor Ethyl acetate Batch distillation Distillate product tank Cold water in Ethanol-water mixture Acid feed tank

7. BOILER TIC TT PI PIPING AND INSTRUMENTATION DIAGRAM (P&ID) Answer 1 • Figure below shows the boiler system that used to supply hot steam to a turbine. This system need to supply 100 psi hot steam to the turbine where the PCV-100 will be opened when the pressure reached that desired pressure. With using pressure control through temperature measurement in the boiler, draw a feedforward loop control system. Y Hot steam Water Process variable need to be controlled = Pressure