CBP-TUCLecture7

CBP-TUCLecture7 - Chemical Reaction Engineering Variable...

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Unformatted text preview: Chemical Reaction Engineering Variable Volume Batch Reactor Variable Volume Batch Reactor. These are in a sense similar to plug flow reactors because the volume changes to maintain constant pressure. This example will be used to review some terminology which you should be familiar with and their definitions. n A A V N k r =- ) ( Consider the general rate expression for a nth order reaction Where N A = number of moles of A V = volume of system n = reaction order k = rate constant Remember that : (I) X A (fractional conversion of A) = mols initial mols final- mols initial =- A A A N N N N A = N A0 (1-X A ) (II) (III) V = V (1+ ε X A ) V = volume of system at time t V = initial volume of system at time 0 ε = expansion factor where the volume of a system is a linear function of the number of moles and hence the conversion. mols initial mols inital- mols final = ε Thus ) ( ) ( ) 1 ( = =- = = A A A X N X N X N For example: 1. For A = 2B + C Final mols (X A = 1) = 3...
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This note was uploaded on 06/06/2011 for the course CHEM 3040 taught by Professor Reddy during the Spring '10 term at Taylor's.

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CBP-TUCLecture7 - Chemical Reaction Engineering Variable...

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