6131 kg/h of a solution that is one-third K2CrO4 by mass is joined by a recycle stream containing 36.4% K2CrO4, and the combined stream is fed into an evaporator. The concentrated stream leaving the evaporator contains 49.4% K2CrO4; this stream is fed into a crystallizer in which it is cooled (causing crystals of K2CrO4 to come out of solution) and then filtered. The filter cake consists of K2CrO4 crystals and a solution of 36.4% K2CrO4 by mass. The crystals account for 95% of the total mass of the filter cake. The solution that passes through the filter, also 36.4% K2CrO4 is the recycle stream.
Find the rate of evaporation, the rate of production of crystalline K2CrO4 , the feed rates that the evaporator and the crystallizer must be designed to handle and the recycle ratio