Ester Manufacturing Processes - Process Design Practice - Lecture Slides, Slides of Process Engineering

Download Ester Manufacturing Processes - Process Design Practice - Lecture Slides and more Slides Process Engineering in PDF only on Docsity! Background of Ester Manufacturing Processes docsity.com Overview ¢ Chemistry ¢ Thermodynamics ¢ Flowsheet Development ® docsity.com Thermodynamics  • Nonideal liquids  – This is a chemical system rather than a  hydrocarbon or petrochemical one  • Significant liquid phase noidealities can exist  – Azeotropes  – Liquid‐Liquid Behavior  Sat iiiii PxPy  docsity.com Thermodynamics  • Binary data from Horsely’s Azeotropic data,  reprinted in Reactive Distillation Design and  Control by Luyben and Yu  Azeotrope Temperature (C ) Mole Fraction Type BuOH/BuOAc/H2O 89.4 0.11/0.13/0.754 Heterogenous BuOAc/H2O 90.2 0.278/0.722 Heterogenous BuOH/H2O 92.7 0.248/0.752 Heterogenous BuOH/BuOAc 116.2 0.73/0.27 Homogenous docsity.com Thermodynamics  • Vapor Phase Association  H R C O O H O C R O   H O C R O     H R C O O H O C R O      docsity.com Flowsheet Development ¢ Chemistry Issues — Equlibrium limited — Solid or homogenous catalyst ¢ Thermodynamic Issues — Azeotropes — Liquid-Liquid Equilibria docsity.com Flowsheet Development  Reaction Section   CSTR(s)   PFR   Feed ratios (which RM is easier to  recover?)   Catalyst introduction & recovery        Reaction  Separation  Raw Materials Recycles Products Wastes Separation Section   How can raw materials be recovered?   Can LLE be exploited?  (extractors/decanters/reflux  decanters)   What sequence should the separation  be done?    docsity.com Flowsheet Development  Rxn & Separation Section   Multistage reactor + separator   Reactor in a reboiler   Reactive distillation   Catalyst introduction & recovery      Reaction  & Separation  Separation  Raw Materials Recycles Products Wastes Separation Section   How can raw materials be recovered?   Can LLE be exploited?  (extractors/decanters/reflux  decanters)   What sequence should the separation  be done?    docsity.com