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lecture-3 - CHE 309 Chemical Reaction Engineering CHE...

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CHE 309: Chemical Reaction Engineering CHE 309: Chemical Reaction Engineering Lecture-3 Lecture-3 Module 1: Mole Balances, Conversion & Reactor Sizing (Chapters 1 and 2, Fogler)
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Topics to be covered in today’s lecture GMBE for a Continuously Stirred Tank Reactor (CSTR) [Fogler Section 1.4.1] GMBE for a Plug Flow Reactor (PFR) [Fogler Section 1.4.2] GMBE for a Packed Bed Reactor (PBR) [Fogler Section 1.4.3] Summary of Design Equations for Various Reactors Class Problem #1 (Reaction Rate in a CSTR)
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General Mole Balance Equation General Mole Balance Equation INPUT Rate - OUTPUT Rate + Rate of GENERATION = Rate of ACCUMULATION Control Volume = V F AO F A G A = (rate of formation of A) · V = (r A )·V dt dN A F AO = G A + F A - In case of perfect mixing In a general case V d r ΔV r lim ΔG lim G V A i M 1 i ji M M 1 i ji M A = = = = =
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General Mole Balance for a Batch Reactor General Mole Balance for a Batch Reactor Reaction : A Products General Mole Balance Equation (GMBE) for Batch Reactor may be written in differential form as written in integral form as F A0 = F A = 0 and G A = (r A )·V (as a result of perfect mixing) 1 Key information: Time to reduce N A from N A0 to N A1 .
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C 1 (CH 3 ) 2 O CH 4 + H 2 +CO e 0 » , c * ¬Ç 9 c Õ Ç d 9 .
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