Question

R1 - LIQUID PHASE CHEMICAL REACTOR The elementary liquid phase reaction given below is carried out in a CSTR by isothermal operation. k > NaOAC + EtOH k = 3.59 L/mol.min NaOH + EtOAC (A) (B) (C) (D) The volume of the CSTR is 2 L and the flowrates of the feeds in the individual streams are 50 ml/min for both reactants. The concentrations of NaOH and EtoAc are 0.05 mol/L and 0.1 mol/L, respectively. [6] a) Calculate the conversion achieved in this reaction and annual production rate (Consider 300 days operation in a year). [7] c) Calculate the final conversion when a second CSTR with a volume of 1 L is connected to the CSTR used. Discuss whether increasing reactor volume for same conversion is feasible or not. [7] d) Calculate the annual production rate of NaoAc by increasing the volumetric flowrates of both reactant streams to 80 ml/min and keeping the reactor volume same as 2 L. Select the more feasible case and justify your selection.

Answer 1

2.5 Dol A + B - Products have for CSTR FAO FOX CAO ХА T soml roosi FAO CAO min (M-YA) ma - KCACB CACCI-XA). CBO 2 DI M = CBD CAO SA 3.59x0.05x0.1 "ХА 2 a) 3 3 59 x Sx 20 (1 - x2 (2-x4) 2.5x10 We get XA = 0.9384. b) for a reactor connected : T, X-X, CAD 3 min (-6)) - (-2) = 1.176. XIO 1 L 10 min. V2 Q o.lt

10 min 72-X, 1.176X103 min 0.05 mol Lt X2 0.023+0.938 - > 0. 96/ By providing a second reactor, the conversion increases. For conversion of 93.84% For 100kg of feed, product of 93.8419 gets formed for a time of homin residence time 93.87kg homin product forms. For Year: 1013472 kg of