Optimization of bio-ethanol autothermal reforming and carbon monoxide removal processes

Experimental investigation of bio-ethanol autothermal reforming (ATR) and water-gas shift (WGS) processes for hydrogen production and regression analysis of the data is performed in the study. The main goal was to obtain regression relations between the most critical dependent variables such as hydr...

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Bibliographic Details
Published in:	Journal of power sources Vol. 193; no. 1; pp. 9 - 16
Main Authors:	Markova, D., Bazbauers, G., Valters, K., Alhucema Arias, R., Weuffen, C., Rochlitz, L.
Format:	Journal Article Conference Proceeding
Language:	English
Published:	Amsterdam Elsevier B.V 01-08-2009 Elsevier
Subjects:	Alternative fuels. Production and utilization Applied sciences Autothermal reforming Energy Energy. Thermal use of fuels Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Ethanol Exact sciences and technology Fuel cell Fuel cells Fuels Hydrogen Ethanol Hydrogen Fuel cell Autothermal reforming Methane Data analysis Reforming Regression analysis Experimental study Optimization Carbon monoxide Autothermal reformer processes Hydrogen production Production process
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Summary:	Experimental investigation of bio-ethanol autothermal reforming (ATR) and water-gas shift (WGS) processes for hydrogen production and regression analysis of the data is performed in the study. The main goal was to obtain regression relations between the most critical dependent variables such as hydrogen, carbon monoxide and methane content in the reformate gas and independent factors such as air-to-fuel ratio ( λ), steam-to-carbon ratio (S/C), inlet temperature of reactants into reforming process ( T ATRin), pressure ( p) and temperature ( T ATR) in the ATR reactor from the experimental data. Purpose of the regression models is to provide optimum values of the process factors that give the maximum amount of hydrogen. The experimental ATR system consisted of an evaporator, an ATR reactor and a one-stage WGS reactor. Empirical relations between hydrogen, carbon monoxide, methane content and the controlling parameters downstream of the ATR reactor are shown in the work. The optimization results show that within the considered range of the process factors the maximum hydrogen concentration of 42 dry vol. % and yield of 3.8 mol mol −1 of ethanol downstream of the ATR reactor can be achieved at S/C = 2.5, λ = 0.20–0.23, p = 0.4 bar, T ATRin = 230 °C, T ATR = 640 °C.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	0378-7753 1873-2755
DOI:	10.1016/j.jpowsour.2009.01.095