CHBE8 - Various upcoming AICHE events Guest speaker P&G...

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Various upcoming AICHE events • Soup Kitchen April 26 and May 2: Contact Dan: dmorgan2@illinois.edu • Two more Buddy events: – Luncheon with Prof. Harley: April 8, noon-1, 350 Noyes – Minigolf, April 26 (last event) Contact Lara: lniersb2@illinois.edu 1 Today (aka. the naughty list): 2 of you still need to declare project 3 of you owe me a research project abstract 3 of you still owe me HW4
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Example Lecture: Reactor Engineering (ChBE 424) Paul J.A. Kenis, Ph.D. University of Illinois at Urbana-Champaign Many thanks to: Dr. Mary Kraft, Dr. Marina Miletic , Dr. Dan Pack who provided some of these slides 2
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At the heart of almost every chemical processing operation • Design of the reactor no routine matter • Many alternatives possible for any given process • Use information, knowledge and experience from: thermodynamics, chemical kinetics, fluid mechanics, heat and mass transfer, and economics . CRE: the synthesis of all these factors with the aim of properly designing and understanding the chemical reactor. What is Chemical Reaction Engineering (CRE) ? Chemical process Raw material Separation Process Separation Process Products and Byproducts
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How do we design a chemical reactor? What size? What type? Maximize the space-time yield of the desired product (=productivity lb/hr/ft 3 ) Stoichiometry Kinetics (from lab scale) Basic molar balances Fluid dynamics Reactor volume
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What size reactor(s) to use? Answer based on the desired conversion, selectivity and kinetics Reactor type size Conversion selectivity Kinetics balances
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A. Reaction Stoichiometry A + 2B C A + B C Kinetics r c =kC a C b 2 vs. r c =kC a C b Single vs. multiple reactions A = 2B C C D Exothermic vs. endothermic C. Process Specifications Productivity – how much needed? (kg/h) Selectivity – A + 2B C and C D but you want C Conversion – how much desired product yield? B. Reactor
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CHBE8 - Various upcoming AICHE events Guest speaker P&G...

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