Pressure Control - Split Range SIM 2209

The TSC Sim 2209 – Split Range Pressure Control Simulation shows a vertical closed pressure vessel being fed with a supply of nitrogen. The nitrogen exits the vessel through two lines with valves controlling the flow.

The flow from the vessel through the 2 lines is controlled by a single pressure controller.

0-50 of the controllers signal controls the product flow, if the controller output increases beyond 50% a second valve is opened flowing to over pressure relief. The controller allows the point at which each valve begins to open or is fully opened to be altered and allows a dead band to be added.

The feed to the vessel can be varied by introducing a second flow of gas to test the effect on the pressure control system.

Disturbances can be added to the upstream and downstream pressures of the system to allow realistic learning on how the control method responds to the type of disturbances found on a real plant.

The P&ID settings of the controller can be altered to improve the tuning of the controller for the various conditions that can be created.

The simulation includes exercise’s based around the tuning of the pressure control system.

Learning Areas

  • Introduction to mass balance.
  • Introduction to process control.
  • Introduction to compressibility.
  • Introduction to split range control.
  • Introduction to dead band.
  • Introduction to safety systems.

 

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