Research, Process Simulation And Optimization Of Separation Of Amyl Alcohol From Fusel Oil

Separation of 2-methyl-1-butanol and 3-methyl-1-butanol from fusel oil can not only change wastes into valuables but have important economic, social and technology innovative benefits. The industrial separation of the fusel oil, which was the byproduct of alcohol made through zymotechnique, was studied in this thesis.Firstly, A precise batch-distilling tower, which would be adaptable to operate in industry or middle scale experiment, has been designed and set up. The optimized operation conditions of reflux (80?1), vaporing quantity ( 9~10 mL?min-1), and raw material concentration (60% mass of 2-methyl-1-butanol) were found. Under this condition, the yield of 2-methyl-1-butanol (≥99%, mass) was increased by about 2% to 84.41% compared with that of laboratory, and the specific productivity of 12 mL?min-1 was 3 times as that of laboratory. In addition, the separative efficiency of s(-)-2-methyl-1-butanol by this distilling tower was also good, the maximum optical purity of 98% was as same as that of laboratory, and the yield ratio of s(-)-2-methyl-1-butanol (optical purity over 90%, mass) was increased about 10 % to 40.68%.Secondly, the optimum operating conditions of the batch distilling tower for separating amyl alcohol from the fusel oil were found by applying CC-BATCH, a batch distillation model of the chemical engineering simulative system named ChemCAD5.0, to simulate and calculate the special technological process of salt outing-special batch distillation. The simulating results were consistent with the experimental results. It would be greatly beneficial to industrialized production or middle scale experiments.The results of simulation and experiments indicated that the separative efficiency of producing 2-methyl-1-butanol (≥99%, mass) and s(-)-2-methyl-1-butanol with high optical purity by using this magnified distilling tower were superior to that of laboratory. The separative efficiency was up to industrialized par and this distilling tower can be used in industry.At last, isobaric VLE data for the ternary system of 2-methyl-1-butanol, 3-methyl-1-butanol and ethylene glycol were measured at 101.3 kPa. The experimental data were satisfactorily correlated with Wilson equation, and obtained the binary interaction parameters of Wilson equation. They were also compared with the predictions by Weidlich's modified UNIFAC group contribution method, and the deviations were also small. The both models are satisfied with the accuracy demanded of process development, design and simulation.