Process Modeling, Simulation, and Control for Chemical Engineers
The purpose of this book is to convey to undergraduate students an understanding of those areas of process control that all chemical engineers need to know. The presentation is concise, readable and restricted to only essential elements. The methods presented have been successfully applied in industry to solve real problems. Analysis of closedloop dynamics in the time, Laplace, frequency and sample-data domains are covered. Designing simple regulatory control systems for multivariable processes is discussed. The practical aspects of process control are presented sizing control valves, tuning controllers, developing control structures and considering interaction between plant design and control. Practical simple identification methods are covered.
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angle assumed becomes Calculate called characteristic equation chemical closedloop column complex component composition Consider constant continuous control valve controller cooling curve damping coefficient deadtime derivative describing differential discussed distillation disturbance domain drop dynamic effect elements engineering equal Example feed feedback controller FIGURE first-order flow rate frequency gain given gives GM(s heat impulse increases initial input integration K₁ Laplace linear liquid load loop manipulated variable matrix methods minutes openloop origin output phase plane plot poles positive pressure problem proportional pulse reaction reactor reflux response roots sampled-data sampling period setpoint shows signal sketched solution solve specific stability steadystate steam step TABLE tank temperature tion transfer function transformation tray unit unstable valve vapor variables zero