Global Rate Equations Shrinking-core Model

SECTION 14-3 GLOBAL. RATE EQUATIONS (SHRINKING-CORE MODEL)... 

In the next section various reaction models are considered. Then global rate equations are developed in Sec. 14-3 for one model (shrinking core). In Sec. 14-4 integrated conversion-vs-time relationships (for single particles) are presented. Such relationships are suitable for use in design of reactors in which the fluid phase is completely mixed. In Secs. 14-5 and 14-6 all these results will be applied to reactor design. 

With the progress of the reaction, the central unreacted core will shrink in size and hence this model is known as SCM. is the concentration of A on the surface of the solid particle and Cj, is the concentration of A on the surface of the imreacted core. The global rate expression is derived by taking into account three rate equations, namely,... 

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