A New Technology for Producing Hydrogen and Adjustable Ratio Syngas from Coke Oven Gas

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• 作者：Jun Shen ; Zhi-zhong Wang ; Huai-wang Yang ; Run-sheng Yao
• 刊名：Energy & Fuels
• 出版年：2007
• 出版时间：November 2007
• 年：2007
• 卷：21
• 期：6
• 页码：3588 - 3592
• 全文大小：884K
• 年卷期：v.21,no.6(November 2007)
• ISSN：1520-5029

文摘

About 15 billion N m³ coke oven gas (COG) is emitted into the air in Shanxi Province in China as air pollutants. It is also a waste of precious chemical resources. In this study, COG was purified respectively by four methods including refrigeration, fiberglass, silica gel, and molecular sieve. Purified COG was separated by a prism membrane into two gas products. One consists mainly of H₂ (>90 vol %) and the other is rich in CH₄ (>60 vol %) with their exact compositions to vary with the membrane separation pressure and outlet gas flow ratio. The gas rich in CH₄ was partially oxidized with oxygen in a high-temperature fixed-bed quartz reactor charged with coke particles of 10 mm size. At 1200–1300 °C, a CH₄ conversion of >99% could be obtained. The H₂/CO ratio in the synthesis product gas can be adjusted in the range 0.3–1.4, very favorable for further C1 synthesis.