The ReSER-COG process for hydrogen production on a Ni-CaO/Al₂O₃ complex catalyst

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• 作者：Rong Wu ; Su Fang Wu
• 关键词：Hydrogen ; Coke oven gas ; Reforming ; Catalyst ; Calcium oxide
• 刊名：International Journal of Hydrogen Energy
• 出版年：2013
• 出版时间：10 September, 2013
• 年：2013
• 卷：38
• 期：27
• 页码：11818-11825
• 全文大小：742 K

文摘

The reactive sorption-enhanced reforming process of simulated coke oven gas (ReSER-COG) was investigated in a laboratory-scale fixed-bed reactor with Ni-CaO/Al₂O₃ complex catalyst. Simulated coke oven gases that are free of or contain C2+ hydrocarbons (C₂H₄, C₂H₆, C₃H₆, C₃H₈) have been studied as feed materials of the ReSER process for hydrogen production. The effects of temperature, steam to methane molar ratio (S/CH₄) and carbon space velocity on the characteristics of ReSER-COG were studied. The results showed that the hydrogen concentration reaches up to 95.8 % at a reaction temperature of 600?¡ãC and a S/CH₄ of 5.8 under normal atmospheric pressure conditions. This reaction temperature was approximately 200?¡ãC lower than that of the coke oven gas steam reforming (COGSR) processes used for the hydrogen production. The amount of H₂ generated by ReSER-COG was approximately 4.4 times more than that produced by the pressure-swing adsorption (PSA) method per unit volume of COG. The reaction temperature was 50?¡ãC lower when simulated COG with C2+ was used, as opposed to when COG without C2+ was used. The complex catalyst has a better resistance of coking during the ReSER-COG process when C2+ gas is present.