an isomerization reaction A to B was carried out in a packed bed rector with a solid catalyst, This reaction is very fast and the overall ratecontrolling step is the external mass transfer between catalyst surface and the bulk fluid It is desired to double the capacity of the existing plant by doubling the feed flow rate , while maintaining the same conversion of A to B in the reactor What major modification has to be done to redesign the reactor, while keeping the same diameter and if all ot