An aqueous feed contains 45% acetone and no TCE by weight. 1000kg/hr of this feed is to be treated with 350kg/hr of pure TCE solvent to recover acetone. We would like to explore the following LLE operations (single-stage equilibrium operation, 4-stage crosscurrent operation and Countercurrent multistage operation equivalent 4-stage crosscurrent operation) at 25C and 1 atm pressure: (a) The liquid-liquid extraction operation is carried out in a single equilibrium stage. Provide complete material balances and acetone recovery. What is the minimum solvent required for this single-stage operation? Show this single-stage LLE operation on the ternary diagram and label appropriately. (b) 350kg/hr TCE solvent is divided into four equal parts and used in crossflow operation to treat 1000 kg/hr of aqueous feed ( 45% acetone and no TCE) using four equilibrium stages. Provide complete material balances and acetone recovery. Show this 4 -stage cross-current LLE operation on the ternary diagram a S01=S02=S01=S04=S/4=75.0kg/hr (c) Use counter-current extraction to extract acetone. Your goal would be to have the same raffinate composition of stream R4 as in part (a) of four crossflow LLE operations. Provide complete material balances and acetone recovery. Show this countercurrent LLE operation on the ternary diagram and label appropriately. is to be matched by RN(N=?). Use the attached termary diagrams of Acetone (A)-Water (C)-TCE (S) system at 25C and 1 atm pressure for this three-part LLE problem. An aqueous feed contains 45% acetone and no TCE by weight. 1000kg/hr of this feed is to be treated with 350kg/hr of pure TCE solvent to recover acetone. We would like to explore the following LLE operations (single-stage equilibrium operation, 4-stage crosscurrent operation and Countercurrent multistage operation equivalent 4-stage crosscurrent operation) at 25C and 1 atm pressure: (a) The liquid-liquid extraction operation is carried out in a single equilibrium stage. Provide complete material balances and acetone recovery. What is the minimum solvent required for this single-stage operation? Show this single-stage LLE operation on the ternary diagram and label appropriately. (b) 350kg/hr TCE solvent is divided into four equal parts and used in crossflow operation to treat 1000 kg/hr of aqueous feed ( 45% acetone and no TCE) using four equilibrium stages. Provide complete material balances and acetone recovery. Show this 4 -stage cross-current LLE operation on the ternary diagram a S01=S02=S01=S04=S/4=75.0kg/hr (c) Use counter-current extraction to extract acetone. Your goal would be to have the same raffinate composition of stream R4 as in part (a) of four crossflow LLE operations. Provide complete material balances and acetone recovery. Show this countercurrent LLE operation on the ternary diagram and label appropriately. is to be matched by RN(N=?). Use the attached termary diagrams of Acetone (A)-Water (C)-TCE (S) system at 25C and 1 atm pressure for this three-part LLE
