Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/20422
Title: Energy and exergy optimization of oxidative steam reforming of acetone-butanol-ethanol-water mixture as a renewable source for H2production via thermodynamic modeling
Authors: Kumar B.
Sinha, Shishir N.
Kumar S.
Kumar S.
Published in: Chemical Product and Process Modeling
Abstract: Acetone-butanol-ethanol-water mixture is obtained by fermentation of biomass namely, corncob, wheat straw, sugarbeets, sugarcane, etc. For using the individual components, one alternative is to separate the mixture by distillation, which is costly and energy intensive operation. This paper proposes its other use in available conditions to produce hydrogen fuel by oxidative steam reforming process. For the proposed process, thermodynamic equilibrium modeling has been performed by using non-stoichiometric approach of Gibbs free energy minimization. The compositions of acetone, butanol and ethanol in mixture are 0.33:0.52:0.15 on molar basis. The influence of pressure (1-10 atm), temperature (573-1473 K), steam to ABE mixture molar feed ratio (FABE = 5.5-8.5), and oxygen to ABE mixture molar feed ratio (FOABE = 0.25-1) have been tested by simulations on the yield of products (at equilibrium) namely, H2, CH4, CO2, CO, and carbon as solid. The optimum conditions for maximum production of desired H2, minimization of undesired CH4, and elimination of carbon (solid) formation are T = 973 K, P = 1 atm, FABE = 8.5, and FOABE = 0.25. Under same operating conditions, the maximum generation of H2 is 7.51 on molar basis with negligible carbon formation. The total energy requirement for the process (295.73 kJ/mol), the energy required/mol of hydrogen (39.37 kJ), and thermal efficiency (68.09%) of the reformer have been obtained at same operating conditions. The exergy analysis has also been investigated to measure the work potential of the energy implied in the reforming process. © 2021 Walter de Gruyter GmbH, Berlin/Boston 2021.
Citation: Chemical Product and Process Modeling
URI: https://doi.org/10.1515/cppm-2020-0116
http://repository.iitr.ac.in/handle/123456789/20422
Issue Date: 2021
Publisher: De Gruyter Open Ltd
Keywords: acetone-butanol-ethanol-water mixture
energy
exergy
hydrogen
oxidative steam reforming
ISSN: 21946159
Author Scopus IDs: 35174529700
7403739121
57209548014
55367255600
Author Affiliations: Kumar, B., Department of Chemical Engineering, National Institute of Technology Srinagar, Hazratbal, Jammu and Kashmir, Srinagar, 190006, India
Sinha, S., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Kumar, S., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Kumar, S., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Corresponding Author: Kumar, S.; Department of Chemical Engineering, India; email: skumar.iitroorkee@gmail.com
Appears in Collections:Journal Publications [CH]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.