Qualitative analysis for the influences of pressure fluctuation and micromixing

1 QUALITATIVE ANALYSIS FOR THE INFLUENCES OF PRESSURE FLUCTUATION AND MICROMIXING 

As explained in Chapters 10 and 11, the existence of pressure fluctuation and the promotion of micromixing are the major features of liquid-continuous impinging streams. For processes occurring on the molecular scale in liquid or multiphase systems with a liquid as the continuous phase, these features have important implications. One of their valuable applications is the promotion of process kinetics. 

According to the molecular collision theory of kinetics, only collisions between molecules with high enough energy can result in reaction(s). In other words, a chemical reaction occurs only when the two conditions are met (1) the molecules to take part in the reaction collide with each other and (2) the colliding molecules have a sufficiently high energy level. 

Secondly, it was described in the previous chapter that is pressure fluctuation in the operation of a liquid-continuous impinging stream device. The existence of pressure fluctuation implies the following  

The reasonable inference is that strong micromixing and pressure fluctuation promote process kinetics by the mechanisms of increasing both the probability of collision and the effective collisions. Or, more generally, process kinetics not only depends on the nature of the substance system involved and the operating conditions but also relates to the flow configuration in the processing device employed. 

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