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Reactor Design 6

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Transcript

  • 1. Polymer/Chemical Reactor Design Muhammad Zafar Iqbal
  • 2. Today
    • Design for single reactions ( Chapter 6 Levenspiel)
    • 1- size comparison of batch and plug flow reactors
    • 2- Mixed Vs Plug Flow Reactor
    • 3- Plug Flow Reactors in Series and in parallel
  • 3. Design for Single Reactions
    • The requirements of a good design:
    • 1- Experience
    • 2- Engineering Judgment
    • 3- Characteristics of different Reactor System
    • Two main requirements in the reactor design are:
    • 1- Reactor Size
    • 2- Product Distribution in the reactor
    • All the factors are judged on Economic Scale
  • 4.
    • 1- Batch Vs Plug Flow Reactor
    • - Both have specific advantages and disadvantages
    • - For a give conversion, both have same volume
    • 2- Mixed Vs Plug Flow Reactor
    • Consider the reaction:
    • For Mixed flow reactor:
    • For Plug Flow Reactor:
    • Comparison.. Or
  • 5.  
  • 6. Graphical Comparison
  • 7. Plug Flow Reactors in Series/Parallel
    • Consider “N” plug flow reactors connected in series, then for any reactor,
    • Or for N reactors, we may write as,
    • Parallel Combinations:
    • Parallel systems are adopted for constant space time through out.
    • The feed is equally distributed in all the parallel reactors.
  • 8. Solve Yourself