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Kazem Motahari

Academic rank: Assistant Professor
ORCID:
Education: PhD.
ScopusId:
HIndex:
Faculty: Engineering
Address: Arak University
Phone:

Research

Title
Numerical study of n-heptane/benzene separation by thermal diffusion column
Type
JournalPaper
Keywords
Thermal diffusion column (TDC); Computational fluid dynamic; Separative work unit; n-heptane/benzene separation.
Year
2018
Journal CHINESE JOURNAL OF CHEMICAL ENGINEERING
DOI
Researchers Neda Hashemipour ، javad karimi sabe ، Kazem Motahari

Abstract

In this article, numerical simulations are performed to investigate the performance of the thermal diffusion column for the separation of n-heptane/benzene mixture. The present work tried to optimize column by analyzing significant parameters such as feed flow rate, temperature and cut. In order to obtain the hydrodynamic and temperature and mass distribution inside thermal diffusion column, computational fluid dynamic (CFD) method is applied to solve the Navier-Stocks equations. Numerical simulations are conducted to study the main parameters in both stationary and time-dependent conditions. By using the separation work unit as a function of cut, the optimal cut for maximum SWU occurs within a limited range of 0.47-0.5 for feed rate between 0.5 to 4 g/min. Our findings reveal that the optimum feed rate in the range of optimum cut is about 1 g/min. In transient study, results show that the best cut for reaching to steady-state condition is Ѳ=0.5.