Given -r A as a function of conversion, one can size any type of reactor. The volume of a PFR can be represented as the shaded area in the Levenspiel Plot shown below. The integral to calculate the PFR volume can be evaluated using a method such as Simpson's One-Third Rule (pg 925):

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平推流反应器（Plug Flow Reactor）简称PFR，是指通过反应器的物料沿同一方向以相同速度向前流动，像活塞一样的反应器中向前平推，故又称活塞流反应器。

Plot (by hand) the response in the overall effluent concentration to a step up in the influent concentration at t-0 from Og/m3 to 100g/m3, from a system involving a PFR followed by (in series) an equally sized CSTR. Assume a conservative chemical.

Having the PFRs in parallel keeps the inlet concentrations the same. Another factor is that if your total flowrate is unchanged and your single PFR size is the same, you've effectively doubled the retention time in each PFR by splitting the flow in parallel reactors, increasing total conversion.

To account for heat effects in multiple reactions, we simply replace the term (-delta H RX) (-r A) in equations (12-35) PFR/PBR and (12-40) CSTR by: These equations are coupled with the mole balances and rate law equations discussed in Chapter 6. Example: Consider the following gas phase reactions.

ow reactor (abbreviated PFR), reactants are fed to the reactor at the inlet and the products are removed from the reactor at the outlet. The reaction takes place within the reactor as the reacting mixture moves through the pipe.

PFRs are basically tubes through which reacting fluid flows and within which chemical reactions take place. Figure 13.1: Simple schematic representation of a PFR. The distincitve characteristics of PFRs were summarized in Chapter 6, and they are presented in more detail in Appendix G.

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A plug flow reactor (PFR) is a tubular reactor used in chemical reactions. Reactants enter one end of the PFR, while products exit from the other end of the tube.