Autocatalytic reactions proceed most efficiently inside a_________________?
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Answer: D. Recycle reactor
Explanation
Autocatalytic reactions, where products catalyze the reaction, benefit greatly from recycle reactors. Recycling a portion of the product stream provides immediate catalyst for incoming reactants. Maintaining high product concentration at the reactor inlet maximizes autocatalytic rates. Autocatalytic reactions start slowly because initial product concentrations are very low. Recycle reactors blend product-rich exit streams with fresh feed entering the system. Reactor optimization techniques match vessel configurations to unique kinetic requirements.
Fermentation processes and certain chemical oxidations exhibit autocatalytic behavior. Using recycle loops reduces the required reactor volume for achieving high target conversions. Chemical process economics improve significantly when reactor sizes are minimized effectively. Option A standard CSTR lacks the direct product recycle needed for optimal autocatalysis. Option B CSTRs in series improve performance but do not match optimized recycle systems. Option C plug flow reactors lack internal product feedback unless an external recycle is added.
- Subject
- Engineering
- Category
- Chemical Engineering
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- —
- Difficulty
- medium
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