Open AccessComparative study of Heat Pump Assisted Distillation Column and Its Application for Pressure Swing Distillation Process
Author(s) -
Dyah Sawitri,
Arief Budiman
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/778/1/012159
Subject(s) - flashing , azeotropic distillation , distillation , azeotrope , fractionating column , process engineering , swing , boiling , batch distillation , extractive distillation , process (computing) , boiling point , fractional distillation , chemistry , thermodynamics , computer science , chromatography , engineering , mechanical engineering , organic chemistry , physics , operating system
Two of the well-known heat pumps assisted distillation column scheme are direct vapor recompression and bottom flashing. The comparison between the two schemes was systematically studied for binary mixture of non-azeotropic benzene-toluene system. Simulation was carried out using Aspen Plus software. The best scheme was selected based on economic evaluation (utility cost and TAC reduction). The application of both schemes was also studied for pressure swing distillation process. Pressure swing distillation is one of the most common methods for separating pressure-sensitive azeotropic system. Direct vapor recompression scheme and bottom flashing scheme can be applied to enhance the energy savings. The minimum-boiling homogeneous azeotropic mixture of methyl acetate-methanol was chosen as representative in process simulation.