Steam gasification of rapeseed, wood, sewage sludge and miscanthus biochars for the production of a hydrogen-rich syngas
Steam gasification of rapeseed, wood, sewage sludge and miscanthus biochars for the production of a hydrogen-rich syngas
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DOI：
10.1016/j.biombioe.2014.07.025
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发表时间：
2014-10
影响因子：
6
通讯作者：
A. Sattar;G. Leeke;A. Hornung;J. Wood
中科院分区：
文献类型：
--
作者：
A. Sattar;G. Leeke;A. Hornung;J. Wood
生物炭的水蒸气气化已成为一种很有前途的富含氢气的合成气生产方法。本研究在石英管反应器中用水蒸气气化了木质颗粒、污泥、油菜籽和芒果等四种中间热解生成的生物炭。研究了该过程的动力学行为以及温度、水蒸气流量和粒度等因素对过程的影响。结果表明，水蒸气流量和温度的升高显著提高了干气产率和碳转化率，但氢气体积分数随温度升高而降低，而颗粒大小对气体组成影响不大。在750℃时，菜籽生物炭的氢气体积分数最高，为58.7%。
Steam gasification of biochars has emerged as a promising method for generating syngas that is rich in hydrogen. In this study four biochars formed via intermediate pyrolysis (wood pellet, sewage sludge, rapeseed and miscanthus) were gasified in a quartz tubular reactor using steam. The dynamic behaviour of the process and effects of temperature, steam flow and particle size were studied. The results show that increases in both steam flow and temperature significantly increase the dry gas yield and carbon conversion, but hydrogen volume fraction decreases at higher temperatures whilst particle size has little effect on gaseous composition. The highest volume fraction of hydrogen, 58.7%, was obtained at 750 °C from the rapeseed biochar.