Elements of Chemical Reaction ering 4th Ed - H. Scott Fogler 56

Elements of Chemical Reaction ering 4th Ed - H. Scott Fogler 56

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24 Mole Balances Chap. 1 gas flow occurs. resulting in ineffective use of piins of the reactor bed. The ad%antage of the packed-bed reactor is that for most reactionr it give^ the high- e5t conversion per weight of catalyst of any catalytic reactor. Another type of catalytic reactor in common use is the Ruidized-bed (Fig- ure I - 15[b]) reactor, which is analogous to the CSTR in that its contents. though heterogeneous, are well mixed. resulting in an even temperature distri- bution throughout the bed. The fluidized-bed reactor can only be approximately modeled as a CSTR (Example 10.3): for higher precision it requires a model of its own (Section PRS12.3). The temperature is relatively uniform throughout, thus avoiding hot spots. This type of reactor can handle large amounts of feed and solids and has good temperature control; consequently. it is used in a large number of applications. The advantages of the ease of catalyst replacement or regeneration are sometimes offset by the high cost
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This note was uploaded on 07/05/2010 for the course CHEM 204 taught by Professor Vanderwal,c during the Spring '08 term at UC Irvine.

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