TY - JOUR
T1 - Modeling of syngas composition obtained from fluidized bed gasifiers using Kuhn–Tucker multipliers
AU - Amaro, Jordan
AU - Mendiburu, Andrés Z.
AU - Ávila, Ivonete
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/6/1
Y1 - 2018/6/1
N2 - This work aims to develop a modified chemical equilibrium model to accurately determine the syngas (synthesis gas) composition obtained from fluidized bed gasifiers. In order to do so, an optimization method was applied to determine the correction factors which modify the chemical equilibrium constants, the carbon conversion efficiency and the enthalpy of reaction. The gasification agents considered for this study were: air, steam, air–steam, and air–steam–oxygen. The optimization method used the Kuhn–Tucker multipliers to obtain small RMS errors. A total of 76 experimental compositions of syngas were selected. Among these data 60 were used to obtain correlations for the correction factor, the carbon conversion efficiency and the enthalpy of reaction. Then, a modified chemical equilibrium model was formulated by a taking advantage of these correlations. The modified chemical equilibrium model was validated showing very good accuracy for the determination of the syngas composition, the RMS error were found to be between 0.94 and 4.84.
AB - This work aims to develop a modified chemical equilibrium model to accurately determine the syngas (synthesis gas) composition obtained from fluidized bed gasifiers. In order to do so, an optimization method was applied to determine the correction factors which modify the chemical equilibrium constants, the carbon conversion efficiency and the enthalpy of reaction. The gasification agents considered for this study were: air, steam, air–steam, and air–steam–oxygen. The optimization method used the Kuhn–Tucker multipliers to obtain small RMS errors. A total of 76 experimental compositions of syngas were selected. Among these data 60 were used to obtain correlations for the correction factor, the carbon conversion efficiency and the enthalpy of reaction. Then, a modified chemical equilibrium model was formulated by a taking advantage of these correlations. The modified chemical equilibrium model was validated showing very good accuracy for the determination of the syngas composition, the RMS error were found to be between 0.94 and 4.84.
KW - Fluidized bed
KW - Gasification
KW - Modified chemical equilibrium model
UR - http://www.scopus.com/inward/record.url?scp=85047453284&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2018.03.141
DO - 10.1016/j.energy.2018.03.141
M3 - Article
AN - SCOPUS:85047453284
SN - 0360-5442
VL - 152
SP - 371
EP - 382
JO - Energy
JF - Energy
ER -