Question

QUESTION 1 Acrylonitrile (CaH&N) is produced by the reaction of propylene (C Ho), ammonia (NH:) and oxygen (02): 2 The feed contains 10 mole % propylene, 12 moles % NH, and 78% air. I. ll. Which reactant is limiting? By what percentage is each of the others in excess? Calculate the kg mole of CHN produced per kgmole of NH3 feed for a 30% conversion of the limiting reactant QUESTION 2 A distillation column separates 10 000 kg/hr of a 50% benzene (B) and 50% toluene (T) mixture. The product recovered from the condenser at the top of the column contains 95% benzene, and the bottom of the column contains 96% toluene The vapour stream entering the condenser from the top of the column is 8000 kg/hr. A portion of the product is returned to the column as reflux, and the rest is withdrawn for use elsewhere. Assume that the composition of the stream at the top of the column (V), the product withdrawn (D) and the reflux (R) are identical. I. Draw a flowsheet to represent this process. Identify the unknowns and the equations for each control volume. Use this information to identify if the mass balance calculations in each control volume are solvable. III. Find the ratio of the amount refluxed to the product withdrawn (R/D).

Answer 1