Hydrogen Production from Simulated Hot Coke Oven Gas by Using Oxygen-Permeable Ceramics

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• 作者：Hongwei Cheng ; Yuwen Zhang ; Xionggang Lu ; Weizhong Ding ; Qian Li
• 刊名：Energy & Fuels
• 出版年：2009
• 出版时间：January 22, 2009
• 年：2009
• 卷：23
• 期：1
• 页码：414-421
• 全文大小：360K
• 年卷期：v.23,no.1(January 22, 2009)
• ISSN：1520-5029

文摘

Hydrogen production from simulated hot coke oven gas (HCOG) was investigated in a BaCo_0.7Fe_0.2Nb_0.1O_3−δ (BCFNO) membrane reactor combined with a Ni/Mg(Al)O catalyst by the partial oxidation with toluene as a model tar compound under atmospheric pressure. The reaction results indicated that toluene was completely converted to H₂ and CO in the catalytic reforming of the simulated HCOG in the temperature range from 825 to 875 °C. Both thermodynamically predicated values and experimental data showed that the selective oxidation of toluene took precedence over that of CH₄ in the reforming reaction. At optimized reaction conditions, the dense oxygen-permeable membrane has an oxygen permeation flux around 12.3 mL cm⁻² min⁻¹, and a CH₄ conversion of 86%, a CO₂ conversion of 99%, a H₂ yield of 88%, and a CO yield of 87% have been achieved. When the toluene and methane were reformed, the amount of H₂ in the reaction effluent gas was about 2 times more than that of original H₂ in simulated HCOG. The results reveal that it is feasible for hydrogen production from HCOG by reforming hydrocarbon compounds in a ceramic oxygen-permeable membrane reactor.