Gli studenti dovranno acquisire le seguenti conoscenze : equilibrio tra fasi in condizioni non ideali; principali tecniche impiantistiche di separazione (conoscenze di base) e loro integrazione in uno schema di processo; criteri di dimensionamento di colonne di assorbimento, rettifica ed estrattori (conoscenze più approfondite); cenni sulla valutazione economica di alternative processistiche e sull'intensificazione di processo. Le competenze finali saranno la capacità di procedere al dimensionamento di singole apparecchiatura e di valutarne la sostenibilità economica e l'integrazione in un dato processo.
Goals The student are required to learn the following knowledge: Phase equilibria under non-ideal conditions; Main separation techniques (fundamentals) and their integration in a process scheme; Sizing and rating criteria for absorption/stripping columns, distillation columns and extraction (deepen); Criteria for economical evaluation of process alternatives and for process intensification.
Final competences will be the ability to size single unit operations, to evaluate their economic sustainability and integration in a given process.
Course content Finding thermodynamic data and mention to group contribution methods. Applied thermodynamics: models for activity and fugacity coefficients. Vapor-liquid equilibrium (VLE) in ideal and non ideal cases; thermodynamic consistency of VLE. VLE diagrams. Liquid-liquid Equilibrium (LLE): diagrams for binary and ternary mixtures. Absorption: unit operations for absorption and stripping. Columns and packings, sizing and rating of columns, pressure drop assessment. Absorption with stage columns, sizing. Distillation, sizing and rating: flash, stage and packed columns, binary and multi-component mixtures. Discontinuous operations. Theoretical stages and efficiency models. Liquid-liquid extraction: sizing and rating, partition and selectivity coefficients, choice of the solvent. Criteria for the quantification of fixed and variable costs for separation processes. Process intensification: examples. Process simulation software: potential and limits, practical exercises.
Lectures and exercises will be mixed, to fix the main concepts. Exercises will be planned on licenced software for process simulation. This module is strictly correlated to the lab.
Reference material - B.E.Poling, J.M.Prausnitz, J.P. O'Connell, " The Properties of Gases and Liquids" McGraw-Hill, 2001. - W.L. Mc Cabe, J.C. Smith, P. Harriot, "Unit operations of chemical engineering", Mc Graw Hill, 2001. - J.M. Douglas, "Conceptual design of chemical processes", Mc Graw Hill, 1988.
Didactic material provided by the teacher through the Ariel platform.
Assessment method: Written + oral examination: The written test includes the solution of exercises similar to those presented during the course. The oral examination includes the discussion of a flow sheet with sizing examples of a unit operation.