Thermodynamic Theories of Physical Chemistry Applied in Acetone Recovery Process
To enhance undergraduates'proficiency in mastering theoretical knowledge of physical chemistry and solving practical problems,the tedious、abstract and intricate concepts of physical chemistry were integrated into the project case for classroom instruction.Taking the recovery of acetone in diacetate fiber production as an example,the acetone recovery process involved adsorption and rectification operations.Through activated carbon adsorption,undergraduate students can acquire proficiency in calculating Langmuir theory,saturated adsorption capacity of single molecules qm and Langmuir adsorption equilibrium constant KL.Additionally,for distillation operations,undergraduates can become adept at determining gas and liquid phase compositions using lever rules.They can also calculate the activity and activity factor of acetone using Clausius-Clapeyron equations and activity factor formulas.Furthermore,they can estimate the theoretical number of tower plates required for acetone recovery tower and the bottom and top concentration between by the tower using Fenske equation.According to the binary gas-liquid phase diagram of isopropyl for acetone(MEO)and water,the solution for removing MEO in the acetone recovery process was proposed.The project cases of absorption,phase equilibrium and other thermodynamic theories are integrated into physical chemistry courses,which significantly improves the ability of undergraduate students to combine theory with practice and solve problems.
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