A fixed-bed reactor is to be designed for a hydrocracking process. The reactor will treat320,000 lb/hr of vacuum gas oil (specific gravity 0.85) in the presence hydrogen at 650 ºF,2000 psig, 1.0 weight hourly space velocity (WHSV). The catalyst has bulk density of 50 lb/ft3and void fraction 0.4. The catalyst is to be divided into four beds, to allow a hydrogen quench tobe brought in between the beds for temperature control. Make a preliminary mechanical designof the reactor(s). Your design should include