Above figure shows 1.For any particular duty and for all positive reaction orders the mixed reactor is always larger than the plug flow reactor.The ratio of volumes increases with reaction order. 2.When conversion is small,the reactor performance is only slightly affected by flow type.The performance ratio increases very rapidly at high conver- sion;consequently,a proper representation of the flow becomes very impor- tant in this range of conversion. 3.Density variation during reaction affects design;however,it is normally of secondary importance compared to the difference in flow type. Remember that the essential factor for reactor size is reaction rate, which is controlled only by concentration of reactant A,besides temperature. The order of reaction,conversion,expansion factor are all related to concentration. 8 8 Above figure shows Remember that the essential factor for reactor size is reaction rate, which is controlled only by concentration of reactant A, besides temperature. The order of reaction, conversion, expansion factor are all related to concentration