Which Kind of Contactor to Use

Here the flow pattern of gas is of no concern. All we need to worry about is the flow pattern of liquid. 

Plug Flow LI Any Flow G (tower and packed bed operations) 

Mixed Flow L/Any Flow G (tank operations of all types) 

Noting that = constant throughout time (because it is in excess), the performance equation for B becomes 

The overall economics which accounts for these three factors will determine which set up and reactor type is best. Let us briefly look at these factors in turn. 

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