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等离子体催化耦合重整生物质燃气研究
  • 期刊名称:《工程热物理学报》 EI 2008,10(29):1791-1794
  • 时间:0
  • 分类:TK16[动力工程及工程热物理—热能工程]
  • 作者机构:[1]中国科学院广州能源研究所,广东广州510640, [2]中国科学院可再生能源与天然气水合物重点实验室,广东广州510640, [3]中国科学院研究生院,北京100039
  • 相关基金:基金项目:国家自然科学基金(No.50506030);广东省自然科学基金资助项目(No.06020449)
  • 相关项目:脉冲电晕-催化耦合重整净化生物质燃气的机理研究
中文摘要:

采用分步浸渍法制备了Ni-Mg整体式催化剂,加入萘作为焦油模型化合物考察了低温等离子体耦合催化重整生物质粗燃气的性能,研究了放电条件及反应温度对催化重整制备合成气的调变作用。结果表明:高压高频放电产生等离子体耦合催化重整,对重整净化生物质粗燃气有明显效果。在重整温度为750℃,放电频率为22kHz时CH4的转化率可由催化重整时的86%提高到94%左右,放电条件下可以将合成气的H2/CO比由1.06提高至1.15。温度对耦合重整影响较为显著,CH4、CO2的转化率均随温度的升高而升高,最高可分别达到94%和89%。加入脉冲电晕后生物质粗燃气中的焦油等复杂有机化合物的转化率达到99%以上。

英文摘要:

The Ni-Mg monolithic catalyst was prepared by impregnation. With naphthalene as tar model compound added in the experiments, the performance of plasma coupled with monolithic catalyst reforming of biomass fuel gas was investigated. The effect of discharge frequency and reforming temperature were investigated. The results show that plasma coupled with monolithic catalyst has an obvious effect on biomass fuel gas reforming. The conversion ratio of CH4 rose from 86% in dry reforming to 94% with discharge frequency at 22 kHz, the H2/CO ratio also raised from 1.06 to 1.15. Temperature is the key factor of coupled reforming, the conversion ratios of CH4 and CO2 raised with the temperature raised, the highest ratios reach to 94% and 89%. Over 99% tar in feed gas was converted to lighter hydrocarbons in both two reforming methods, but the tar species in outlet gas are different from each other, more n-alkahe were formed in coupled reforming.

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