Elements of Chemical Reaction ering 4th Ed - H. Scott Fogler 45

Elements of Chemical Reaction ering 4th Ed - H. Scott Fogler 45

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What reac~ion systems use a CSTR? The idtal CSTR iv assumed trr ht. perrec~ly mixed. phase reactions. It is normafly operared at steady state and I\ a\surned to be perfectly mixed: conrequenily, t hers is no ti me dependence or pokition depen- dence of the temperature. [he concentration, or the reaction rnte inside rile CSTR. That is, every variable i> the wme at every point inside the reactor. Becat~se the temperature md concenrration are identical everywhere u itliin the reaction vessel, they are the same at the exit point as they are elsewhere in the tank. Thus the temperature and concentralion in the
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Unformatted text preview: modeled a5 being the same as those jnside the reactor. In systems where mixing is highly nonideill, the weII-mixed model i* inadequate and we must resort to other modeling techniques, such ns rebidence-time distributions, to obtain meaning- ful results. This topic o f nonideal mixing is discussed in Chapters 13 and 14. Figure 1-7(a) CSTRharch Figure I-71bk CSTR mixing patterns. reactor. [Courtesy of Pfnudlcr. Inc.1 Alw see the Vir~rnl Enr~cluped~n oJ Eqwp~nent on the CD-ROM. When the general mole balance equation is applied to a CSTR operated at steady state (i.e., conditions do not change with time),...
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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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