Energy efficiency improvement of dimethyl ether purification process by utilizing dividing wall columns

Title
Energy efficiency improvement of dimethyl ether purification process by utilizing dividing wall columns
Author(s)
이문용레민쿠앙구웬롱
Keywords
COUPLED DISTILLATION-COLUMNS; VAPOR-LIQUID-EQUILIBRIUM; DESIGN; OPTIMIZATION; SYSTEMS; DME; CONVERSION; CATALYSTS; METHANOL; SYNGAS
Issue Date
201211
Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
Citation
KOREAN JOURNAL OF CHEMICAL ENGINEERING, v.29, no.11, pp.1500 - 1507
Abstract
The alternative fuel, dimethyl ether (DME), which can be synthesized from natural gas, coal or biomass syngas, has been traditionally used as a diesel substitute or additive. DME purification processes with a conventional distillation sequence consume a large amount of energy. We used dividing wall columns (DWCs) to improve the energy efficiency and reduce the capital cost of the DME purification process. Various possible DWC arrangements were explored to find the potential benefits derived from thermally coupled distillations. The results show that utilizing DWCs can significantly reduce both the energy consumption and investment cost of the DME purification process. The lower energy consumption also results in the reduction of the CO2 emission.
URI
http://hdl.handle.net/YU.REPOSITORY/26975http://dx.doi.org/10.1007/s11814-012-0048-6
ISSN
0256-1115
Appears in Collections:
공과대학 > 화학공학부 > Articles
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