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Unformatted text preview: Mole Balances Chae. 1 0 ti t 0 1 ' Figure 16 M oletime rrajectories. We might ask what time. t , , is necessary to reduce t he initial number of moles f rom N Ao to a final desired number N A I .Applying Equation ( 15) to t he isomerization rearranging. and integrating with limits that at r = 0. then N , = N,, NA = we obtain and at t = I , , then This equation is the integral form of the mole balance on a batch reactor. I t gives the time, r ,. necessary to reduce the number o f moles from /VAoto N ,, and also to form rYB1moles of B . 1.4 ContinuousFlow Reactors
Continuous flow reactors are almost always operated at steady state. We wiil consider three types: the continuous stirred tank reactor (CSTR), the plug flow reactor (PFR), and the packed bed reactor (PBR). Detailed descriptions of these reactors can be found i n both the Professional Reference Shelf IPRS) for Chapter 1 and in the Visrral Encyciopeclin of Equiprnenr on the CDROM,
1.41 ContinuousStirred Tank Reactor What i s a CSTR uxd A type of reactor used commonly in industrial processing is the stirred tank operated c ontinuously (Figure 17). It is referred to as the continuo~ustirred tnrlk renrtor (CSTR) r vat, or backmix reactor; and i s used primarily for liquid o ...
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 Spring '08
 Vanderwal,C
 Mole, Reaction, Kinetics

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