2. Acetic anhydride can be produced by the reaction system; Acetone Ketene + CH Ketene CO+CH 700 C and 1 atm Ketene + Acetic Acid Acetic Anhydride 80 C and 1 atm The selectivity (moles of ketene leaving the pyrolysis reactor per mole pf acetone converted) is given by S = 1-4x/3 at low conversions. The desired production rate of anhydride is 16.58 mol/h at a purity of 99%. The cost data are; acetone $15.66/mol, acid = $15.00/mol, anhydride = $44.41/mol, and fuel at$4.00/10 Btu. Draw the flowsheet and plot the economic potential. Process engineering (Please do economic potential calculation )