Study on Separation of Acetonitrile and Ethyl Acetate Mixture by Batch Zeotropic Distillation |
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Author | DiJianDong |
Tutor | BaiPeng |
School | Tianjin University |
Course | Chemical Engineering |
Keywords | Azeotropic distillation Batch Distillation Acetonitrile Ethyl acetate |
CLC | TQ202 |
Type | Master's thesis |
Year | 2007 |
Downloads | 225 |
Quotes | 1 |
Acetonitrile and ethyl acetate is a wide range of industrial applications in the chemical and pharmaceutical raw materials and fine chemical organic solvent . Forming an azeotropic mixture of both , using ordinary distillation methods can not be separated , its recycling is difficult . Acetonitrile - ethyl acetate azeotrope the distillation separation methods and technology research has not been reported in the literature . This paper studies azeotropic distillation separation heterogeneous intermittent acetonitrile - ethyl acetate azeotropic mixture . First azeotropic entrainer choice, the final selection of n-hexane to azeotropic entrainer and acetonitrile - ethyl acetate - n-hexane ternary system the vapor-liquid equilibrium experiments , verify that the n-hexane as azeotropic entrainer feasibility. And liquid-liquid equilibrium experimental determination of n-hexane - acetonitrile system to determine the parameters of heterogeneous hierarchical reflux conditions . Finally, the n-hexane as azeotropic entrainer acetonitrile - ethyl acetate intermittent azeotropic distillation separation experiments . The results showed that , using n-hexane as entrainer heterogeneous intermittent azeotropic distillation, enables the acetonitrile - ethyl acetate azeotropic mixture separation . The azeotropic distillation device is divided into the reboiler , 4 tower body , stratification , and condenser part , to establish the mathematical model of a heterogeneous batch azeotropic distillation process . Balance model of vapor-liquid equilibrium and liquid-liquid UNIFAC model is solved using the Newton-Raphson method and two-point implicit combined . Simulation run of the model and solving method for faster convergence acetonitrile - ethyl acetate - n-hexane ternary system simulation . The simulation results are in good agreement with the experimental data .