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With the presence of modern analytical sensors, the quality of the top product in Question 3 a) can be controlled by proposing cascade control to control the quality of the product. Propose a cascade control strategy to maintain the composition of the top product in the distillation process and draw a complete P&ID with the setpoint of each loop.

With the presence of modern analytical sensors, the quality of the top product in Question 3 a) can be controlled by proposing cascade control to control the quality of the product. Propose a cascade control strategy to maintain the composition of the top product in the distillation process and draw a complete P&ID with the setpoint of each loop.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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b) With the presence of modern analytical sensors, the quality of the top product in Question 3 a) can be controlled by proposing cascade control to control the quality of the product. Propose a cascade control strategy to maintain the composition of the top product in the distillation process and draw a complete P&ID with the setpoint of each loop.
Transcribed Image Text:b) With the presence of modern analytical sensors, the quality of the top product in Question 3 a) can be controlled by proposing cascade control to control the quality of the product. Propose a cascade control strategy to maintain the composition of the top product in the distillation process and draw a complete P&ID with the setpoint of each loop.
Figure 5 shows a top section of a continuous distillation column which is used to separate a mixture based on the difference in the boiling point. i. Feed ii. iii. Cooling water in Reflux CW out Reflux Drum Distillate a) Conventionally, the quality of the top product is controlled by feedback control that controls the top temperature in the column. Figure 5 Schematic diagram of distillation column Select a suitable manipulated variable for the feedback control system and justify your answer. Design a P&ID of the feedback control system. Draw a block diagram of the feedback control if the transfer function that relates the manipulated variable to the control variable is represented by a second-order system, the control valve is assumed a zeroth-order system, and a PI controller is used to control the process.
Transcribed Image Text:Figure 5 shows a top section of a continuous distillation column which is used to separate a mixture based on the difference in the boiling point. i. Feed ii. iii. Cooling water in Reflux CW out Reflux Drum Distillate a) Conventionally, the quality of the top product is controlled by feedback control that controls the top temperature in the column. Figure 5 Schematic diagram of distillation column Select a suitable manipulated variable for the feedback control system and justify your answer. Design a P&ID of the feedback control system. Draw a block diagram of the feedback control if the transfer function that relates the manipulated variable to the control variable is represented by a second-order system, the control valve is assumed a zeroth-order system, and a PI controller is used to control the process.
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