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In this first model, we will be assuming constant temperature, pressure and molar flow rate throughout the channel. Typically, a reactor would never be modeled under these nearly unfeasible conditions. However, for this example we want to start with the simplest model possible and then build on it to fully examine the effects of the variables.
We will examine two cases for this first model: a reaction with a temperature set to 673K and a reaction with an increased temperature of 873K. For both cases we will compare the graphs of the species flowrate versus distance along the microreactor.
Graph 1.1: we set the temperature to equal 673 K
We can see from this first example that we produce very little of the desired product, NO. Furthermore, we produce a significant amount of the undesired product, N2! Therefore, we need to find a model in which the outlet flowrate of NO is increased.
Graph 1.2: Let’s see the effect from raising the temperature to 873K.
For the second case, we produce a much
higher flow rate of NO. In fact, for the first 2 mm, we have a
higher flow rate of NO than for N2. We can conclude
from this example that as the temperature in the microreactor is
increased, the amount of NO produced also increases.
Want to find out more? Click
on the Expert Model 1
page.