| 超临界水中半纤维素气化制氢的影响因素分析 |
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| 引用本文： | 关宇,裴爱霞,郭烈锦. 超临界水中半纤维素气化制氢的影响因素分析[J]. 西安交通大学学报, 2007, 41(1): 9-13 |
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| 作者姓名： | 关宇 裴爱霞 郭烈锦 |
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| 作者单位： | 西安交通大学动力工程多相流国家重点实验室,710049,西安 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金会优秀重点实验室基金;国家自然科学基金 |
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| 摘 要： | 以碱性化合物KaCO3、Ca（OH）2以及Ru／C为催化剂，在间歇式高压反应釜中，对半纤维素在超临界水中的气化制氢特性进行了实验研究．结果表明：3种催化剂都有较好的催化作用，其中Ru／C的效果最佳，当加入0．8g时，每千克半纤维素可生成14．365m01 H2，约为不加入催化剂时的3．8倍，为单独加入K2CO3、Ca（OH）2时的1．6和1．9倍，气化率和氢转化率也有很大提高，分别达到77％和126％．同时，催化剂混合使用要比单独一种催化剂的效果好．温度的提高可明显提高H2产量，同时降低CH4产量．此外，停留时间对气化效果也有一定的影响，20min时气化效果最佳．
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| 关 键 词： | 生物质 超临界水 气化 氢气 |
| 文章编号： | 0253-987X（2007）01-0009-05 |
| 修稿时间： | 2006-06-16 |
Influence of Main Parameters on Gasification of Hemicellulose in Supercritical Water |
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| Guan Yu,Pei Aixia,Guo Liejin. Influence of Main Parameters on Gasification of Hemicellulose in Supercritical Water[J]. Journal of Xi'an Jiaotong University, 2007, 41(1): 9-13 |
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| Authors: | Guan Yu Pei Aixia Guo Liejin |
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| Abstract: | The gasification of hemicellulose in supercritical water to produce hydrogen-rich gas was performed,and K_2CO_3,Ca(OH)_2 and Ru/C were used as catalysts during the gasification processes.The experimental results show that all the catalysts have good catalytic effect on the gasification of hemicellulose and for hydrogen production,in which Ru/C is the best one.Hydrogen production reaches 14.365 mol when added 0.8 g Ru/C to 1 kg hemicellulose,which is 1.6 and 1.9 times that when K_2CO_3 and Ca(OH)_2 were added respectively.The hydrogen productivity with the mixture of several catalysts mentioned above is greater than that with a single catalyst.Temperature increasing could obviously improve the productivity of hydrogen,and reduce methane production.In addition,different residence times affect the gasification,and 20 minutes is optimal. |
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| Keywords: | biomass supercritical water gasification hydrogen |
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