Answer to Question #241490 in Chemical Engineering for Innocent

Question

At 400 tons per annum capacity, 99 % w/w urea is to be produced from ammonia and CO2 using a simplified three step processinvolvingsynthesis,decompositionandconcentration, (i).Sketchtheblockdiagramforthisprocess. (ii). Given that 80 % conversion of CO2 is achieved with 50 % excess ammonia during urea synthesis, evaluate the actual quantitiesofthefeeds? 

Answer 1

Provided that:

Given that 80 % conversion of CO2 is achieved with 50 % excess ammonia during urea synthesis:

Actual quantity of feed is shown:

It implies we will require37.08 c to obtain 39.72bc