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chemical reaction engineering / December 18, 2021

Types of Multiple Reactions

Use molar flow rates and concentrations; DO NOT use conversion!There are 4 classes of Multiple Reactions.1. Parallel Reactions2. Series Reactions3. Complex Reactions: Series and Parallel aspects combined4. Independent ReactionsIndependent reactions typically occur in the catalytic cracking of crude oil to form gasoline. What type of reaction is taking place? Selectivity and Yield There are two […]

By · December 18, 2021 · 1 min read

Use molar flow rates and concentrations; DO NOT use conversion!
There are 4 classes of Multiple Reactions.
1. Parallel Reactions

2. Series Reactions

3. Complex Reactions: Series and Parallel aspects combined

4. Independent Reactions

Independent reactions typically occur in the catalytic cracking of crude oil to form gasoline.

What type of reaction is taking place?

Selectivity and Yield

There are two types of selectivity and yield: Instantaneous and Overall.

InstantaneousOverall
Selectivity
Yield
Example:                   desired product , rD=k1CA2CB
                    undesired product , rU=k2CACB
                        To maximize the selectivity of D with respect to U run at high concentration of A and use PFR