Mixed parallel-series

Derive the rate expression for this mixed-parallel series-reaction network and the expression for the percent selectivity to the epoxide. 

In Example 1.5.6, the expression for the maximum concentration in a series reaction network was illustrated. Example 1.5.8 showed how to determine the selectivity in a mixed-parallel series-reaction network. Calculate the maximum epoxide selectivity attained from the reaction network illustrated in Example 1.5.8 assuming an excess of dioxygen. 

Mixed parallel and series reactions producing byproducts. In more complex reaction systems, both parallel and series reactions can occur together. Mixed parallel and series reactions are of the type... 

An example of mixed parallel and series reactions is the production of ethanolamines by reaction between ethylene oxide and ammonia ... 

Mixed parallel and series reactions producing byproducts. Consider the mixed parallel and series reaction system from Eq. (2.10) with the corresponding kinetic equations ... 

The series byproduct reaction requires a plug-flow reactor. Thus, for the mixed parallel and series system above, if... 

Figure 2.3 Choice of reactor type for mixed parallel and series reactions when the parallel reaction has a higher order than the primary reaction.

Mixed parallel and series reactions producing byproducts. As with parallel and series reactions, use of an excess of one of the feeds can be effective in improving selectivity with mixed reactions. As an... 

Li, K.T. and Toor, H.L. (1986), Turbulent reactive mixing with series parallel reaction, effect of mixing on yield,A/C/i 7.,32, 1312. 

There are many variations of the simple form of stirred-tank reactor just considered multiple units in parallel, series, split streams, more than one reaction, etc. Some of these will be discussed in Chap. 4. Deviations from the assumption of complete mixing are mentioned in Sec. 3-5 and discussed in more detail in Chap. 6. 

The multiple reactions involve parallel, series, and mixed reactions. They consist of complex reactions in which the specific rates of each reaction should be determined. They often occur in industrial processes. These reactions can be simple, elementary, irreversible and reversible, or even nonelementary. Some cases are ... 

Initially, let us define yield and selectivity for multiple reactions occurring simnl-taneously, for reactions in parallel, series, or mixed. When there is only one reaction step, the yield is confused with the conversion. 

When talking about mixed reactions (series-parallel reactions, consecutive-competitive reactions), we refer to interrelated reactions that contain subprocesses that can be regarded... 

But what is the correct choice a byproduct reaction calls for a continuous well-mixed reactor. On the other hand, the byproduct series reaction calls for a plug-flow reactor. It would seem that, given this situation, some level of mixing between a plug-flow and a continuous well-mixed reactor will give the best... 

---