Tag Archive: reactor control

Aug
18

Effect of Mechanical Design – Equipment

There are numerous examples where equipment design by not taking into consideration dynamics caused poor control. A good equipment design should reflect an understanding of how dynamics affect control loops and the efficiency and capacity of the production unit. Most advanced control opportunities arise from equipment deficiencies that become particularly evident as plants are pushed …

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Aug
11

Effect of Mechanical Design – UA

The product of the overall heat transfer coefficient and area (UA) determines the controllability of temperature processes. The deterioration of the UA is a particular concern for crystallization and polymerization processes. Frosting and fouling can decrease process efficiency and production rate even if the controllers are retuned. For exothermic reactors, a decrease in the UA …

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Jul
28

Effect of Mechanical Design – Mixing

Mixing changes the game. Mixing has a broad impact on disturbances, interactions, and noise. Mixing breaks paradigms on tuning, control, and performance. Mixing is at play in key unit operations offering incredible tightness of control and forgiveness of mistakes enabling exceptional product quality. I became sensitized to the role of mixing early in my career …

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Mar
29

PID Unleashed

The full power of the PID is rarely utilized. The section Industrial-Applications-of-PID-Control in the soon to be book published by Springer titled PID Control in the third Millennium: Lessons Learned and New Approaches explores key PID features and provides examples for addressing challenging applications and control objectives for common unit operation applications in the process industry.