Transcription of CHAPTER 8: Mixing in Chemical Reactors
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CHAPTER 8: Mixing in Chemical Reactors
CHAPTER 8: Mixing in Chemical ReactorsCopyright 2022 by Nob Hill Publishing, LLCThe three main reactor types developed thus far batch, continuous-stirred-tank,and plug-flow Reactors are useful for modeling many complex Chemical to this point we have neglected a careful treatment of the fluid flow patternwithin the this CHAPTER we explore some of the limits of this approach and develop methodsto address and overcome some of the more obvious / 130 Scope of problemThe general topic of Mixing , even in the restricted context of Chemical Reactors , isan impossibly wide one to treat this CHAPTER , we will restrict ourselves to fluid-phase natural approach to describing Mixing is to solve the equations of motion of fluid systems, the type of fluid flow is obviously important, and we shouldconsider both laminar and turbulent flow, and various mechanisms of diffusion(molecular diffusion, eddy diffusion).
dye in the reactor follows from Equation 4.38 dc dt = Q f V R (c f c ); c (0) = 0 (8.8) in which c is the concentration of the dye in the reactor and e uent stream. In Chapter 4, we named the parameter = V R = Q f the \mean residence time". We show subsequently that is indeed the mean of the RTD for a CSTR. 16/130
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