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Chemical Reaction Engineering

Learn about reaction stoichiometry in batch systems to size CSTR and PFR systems, find rate laws, and analyze species changes.

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Chemical Reaction Engineering

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  1. Chemical Reaction Engineering Chapter 3, Part 2: Reaction Stoichiometry: Batch

  2. Why Stoichiometry? • If we have • Then we can size a number of CSTR and PFR reaction systems • To find -rA= f(X) • Need the rate law, -rA=f(CA, CB) • Need the reaction stoichiometry, CA=CA0(1-X) [Liquid Phase] X !!

  3. Batch Stoichiometric Table Species Symbol Initial Change Remaining A A ____________ ________

  4. Batch Stoichiometric Table Species Symbol Initial Change Remaining A A B B ____________ ________

  5. Batch Stoichiometric Table Species Symbol Initial Change Remaining A A B B C C ____________ ________

  6. Batch Stoichiometric Table Species Symbol Initial Change Remaining A A B B C C D D ____________ ________

  7. Batch Stoichiometric Table Species Symbol Initial Change Remaining A A B B C C D D Inert I ------- ____________ ________

  8. Batch Stoichiometric Table Species Symbol Initial Change Remaining A A B B C C D D Inert I ------- ____________ ________

  9. Batch Stoichiometric Table Species Symbol Initial Change Remaining A A B B C C D D Inert I ------- ____________ ________ and where

  10. Concentration: Batch Systems Constant Volume Batch:

  11. Concentration: Batch Systems Constant Volume Batch: Note:              if the reaction occurs in the liquid phase                                                or       if a gas phase reaction occurs in a rigid (e.g., steel) batch reactor Then

  12. Concentration: Batch Systems Constant Volume Batch: Note:              if the reaction occurs in the liquid phase                                                or       if a gas phase reaction occurs in a rigid (e.g., steel) batch reactor Then etc.

  13. Concentration: Batch Systems Constant Volume Batch: Note:              if the reaction occurs in the liquid phase                                                or       if a gas phase reaction occurs in a rigid (e.g., steel) batch reactor Then etc. If then And we have –rA=f(X)

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