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A combined thermodynamic and experimental study on chemical‐looping ethanol reforming with carbon dioxide capture for hydrogen generation
Author(s) -
Wang Wenju,
Cao Yingyu
Publication year - 2013
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.2976
Subject(s) - chemical looping combustion , carbon dioxide , chemistry , hydrogen production , hydrogen , non blocking i/o , oxygen , carbon fibers , chemical engineering , gibbs free energy , syngas , sorbent , steam reforming , thermodynamics , materials science , catalysis , organic chemistry , adsorption , physics , engineering , composite number , composite material
SUMMARY Chemical‐looping ethanol reforming with carbon dioxide capture is proposed. It combines chemical‐looping reforming and carbon dioxide capture for pure hydrogen generation from ethanol with inherent separation of carbon dioxide. A thermal analysis of the process using NiO oxygen carrier is performed by simulating reactions using the Gibbs energy minimization method. The promising systems are investigated further with respect to temperature, NiO/C 2 H 5 OH molar ratio, CaO/C 2 H 5 OH molar ratio and pressure changes as well as possible carbon formation in the reformer. Favorable operation conditions in the presence of CaO are: pressures around 3 atm, reactor temperatures around 850 K, NiO/C 2 H 5 OH molar ratio = 3 and CaO/C 2 H 5 OH = 3. The H 2 yield and thermal efficiency with CaO addition are higher than that without CaO addition, showing that the addition of a CO 2 sorbent in the process increases the H 2 production. Copyright © 2012 John Wiley & Sons, Ltd.