CTEC 1391 Test Prep

CTEC 1391 Test Prep Explain the function of an I/p in a control loop. What usually connected to - Flow transducer converts to (4-20mA) signal from the controller to (3-15psig) pneumatic signal which sends the valve to open or close What would the pump system control valve would do if HV-201 were to close - Open the bypass which is HV-202 If the flow transmitter (FT-102) in the tank system would have faulty reading of 0 the tank level on LIC-101 would change by - Everything would increase If the flow transmitter (FT-102) in the tank system would have faulty reading of 0 the flow through FIC-101 would change by - Would not change If the flow transmitter (FT-102) in the tank system would have faulty reading of 0 the output signal on LIC-101 and the setpoint of FIC-103 would change by - FIC-102 would close If HV-101 were to fail in the tank system the output signal on LIC-101 and flow of FIC-102 would change by - It would decrease. Explain the purpose of the reboiler and how it works - Shell of tube of the reboiler and heats the thermoil Explain the purpose of reflux - Vapor comes up to the top cools down the temperature turns it to liquid. If feed were to increased to the tower what would happen to the thermoil flow - It would go down If the preheater temperature were to increase in SPM 700 how would the reflux flow valve (FV- 801) and (AI-801) change - It would go up, and get hotter, would vapor more, TIC-308 increase temperature, FV-801 should open up Lost of cooling water in SPM 700 to the condenser how would (FV-802) change - Decrease flow, cooling water to the drum, Combination reaction - A+B--C Decomposition reaction - C-A+B Single Replacement reaction - AB+C-AC+B Double Replacement reaction - AB + CD -- AD + CB If a reaction is exothermic and we want to keep the temperature constant, what must we do - Cool the reactor