Course IIA1117 Control Engineering Fall 2017 Plant-wide control

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Presentation transcript:

By Finn Aakre Haugen (finn.haugen@usn.no) Course IIA1117 Control Engineering Fall 2017 Plant-wide control By Finn Aakre Haugen (finn.haugen@usn.no) USN. IIA1117 Control Engineering. Haugen. 2017.

General specifications for plantwide control: 2 General specifications for plantwide control: Product flow is controlled (to follow a setpoint) . Note: Implement only one (1) flow control loop in the line! Product quality is controlled (automatic control not always possible). Mass balance of liquid and/or gas of each process vessel (tank, reactor, etc.) is maintained. Temperatures in certain process flows and vessels are controlled. USN. IIA1117 Control Engineering. Haugen. 2017.

Principal plant with control structure 3 USN. IIA1117 Control Engineering. Haugen. 2017.

USN. IIA1117 Control Engineering. Haugen. 2017. Example: Nitric acid plant (simplified) 4 USN. IIA1117 Control Engineering. Haugen. 2017.

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