PROCESS DYNAMICS AND CONTROL

Second cycle degree in CHEMICAL AND PROCESS ENGINEERING

Campus: PADOVA

Language: English

Teaching period: First Semester

Lecturer: MASSIMILIANO BAROLO

Number of ECTS credits allocated: 9


Syllabus
Prerequisites: Steady state and dynamic material and energy balances; equipment for transport of fluids, for heat exchange, for fluid separation; chemical reactors.
Examination methods: The exam includes three mandatory sequential activities: in-course homeworks, final written exam, and final oral exam. The homeworks contribute about 12% of the final grade, the written exam about 44%, while the remaining 44% is contributed by the oral exam. The written exam requires solving one or two exercises in about 2 hours; the use of lecture notes and/or textbooks is permitted. A typical oral exam includes three questions on the entire course syllabus, and lasts about 45 minutes. The oral exam may be done either in Italian or in English, according to the student’s preference.
Course unit contents: FIRST-PRINCIPLES DYNAMIC MODELING OF CHEMICAL PROCESSES.
PROCESS DYNAMICS. Laplace transform; transfer functions; dynamic response of first-order and second-order systems; dynamic response of more complicated systems; effects of poles and zeroes; processes with dead times. Linearization of nonlinear models. Identification of dynamic models from process data.
PROCESS CONTROL. Feedback control for SISO systems: on-off controllers; PID controllers; issues in the practical implementation of PID controllers: reset windup, derivative filters, derivative kick, digital implementation; measurement and control instrumentation; sizing of control valves; dynamic behavior and stability of controlled systems; tuning of PID controllers. Feedforward and ratio control. Enhanced feedback control techniques: cascade control, inferential control, selective control, override control, split-range control, valve position control. Control of MIMO systems: coupling and interaction; relative gains and control loop pairing. Control of distillation columns.